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BFD to bring up OSPF immediately XR

Hello Folks,

Trying to know if the BFD running over OSPF can detect the physical and line protocol up and bring up the OSPF immediately instead of using OSPF hello for link availability detection.

Ran a test in lab with ASR 9006 and ASR 9001 connected back to back and configured with BFD (async w/o echo, 100msX3) over OSPF (default timers). Finding the interface comes up initiates OSPF to come up and then the BFD session is created. 

The aim of the exercise to be make the OSPF up immediately without any delay once the physical link comes up. Since the OSPF fast hello is not supported, trying to site BFD's hello if it can help.

Below is the log captured while the link comes up.

RP/0/RSP0/CPU0:Oct 10 00:15:33.102 : ospf[1021]: intf TenGigE0/0/2/1 going Up in area 0, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:33.102 : ospf[1021]: Trap of type 0 is not enabled
RP/0/RSP0/CPU0:Oct 10 00:15:33.102 : ospf[1021]: Send hello to 224.0.0.5 area 0 on TenGigE0/0/2/1 from 10.4.4.2 (nbr/if state 3/4)
RP/0/RSP0/CPU0:Oct 10 00:15:33.102 : ospf[1021]: Send hello pkt pri 1 options 0x12 DR 0.0.0.0 BDR 0.0.0.0 hello 10 dead 40 netmask 255.255.255.252, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:33.104 : ospf[1021]: Rcv hello from 1.1.1.1 area 0 from TenGigE0/0/2/1 10.4.4.1 (nbr/if state 3/4) vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:33.104 : ospf[1021]: ospf_router Rcv hello from new nbr 1.1.1.1 area 0 from TenGigE0/0/2/1 10.4.4.1
RP/0/RSP0/CPU0:Oct 10 00:15:33.104 : ospf[1021]: Rcv hello pkt pri 1 options 0x12 DR 0.0.0.0 BDR 0.0.0.0 hello 10 dead 40 netmask 255.255.255.252 (nbr_dr 0.0.0.0 nbr_bdr 0.0.0.0)
RP/0/RSP0/CPU0:Oct 10 00:15:33.104 : ospf[1021]: End of router thread hello processing
RP/0/RSP0/CPU0:Oct 10 00:15:33.156 : ospf[1021]: Trap of type 12 is not enabled
RP/0/RSP0/CPU0:Oct 10 00:15:42.158 : ospf[1021]: Send hello to 224.0.0.5 area 0 on TenGigE0/0/2/1 from 10.4.4.2 (nbr/if state 3/4)
RP/0/RSP0/CPU0:Oct 10 00:15:42.158 : ospf[1021]: Send hello pkt pri 1 options 0x12 DR 0.0.0.0 BDR 0.0.0.0 hello 10 dead 40 netmask 255.255.255.252, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.159 : ospf[1021]: Rcv DBD from 1.1.1.1(10.4.4.1) on TenGigE0/0/2/1 seq 0x3b opt 0x52 flag 0x7 len 32 mtu 1500 state INIT vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.159 : ospf[1021]: 2 Way Communication to 1.1.1.1 on TenGigE0/0/2/1, state 2WAY
RP/0/RSP0/CPU0:Oct 10 00:15:42.159 : ospf[1021]: Send DBD to 1.1.1.1(10.4.4.1) on TenGigE0/0/2/1 seq 0xe29 opt 0x52 flag 0x7 len 32, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.159 : ospf[1021]: First DBD and we are not SLAVE
RP/0/RSP0/CPU0:Oct 10 00:15:42.160 : ospf[1021]: Rcv DBD from 1.1.1.1(10.4.4.1) on TenGigE0/0/2/1 seq 0xe29 opt 0x52 flag 0x2 len 72 mtu 1500 state EXSTART vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.160 : ospf[1021]: NBR Negotiation Done. We are the MASTER for nbr 1.1.1.1 on TenGigE0/0/2/1, area 0
RP/0/RSP0/CPU0:Oct 10 00:15:42.161 : ospf[1021]: build dbd: took 1 ms for nbr 1.1.1.1, count=2, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.161 : ospf[1021]: Send DBD to 1.1.1.1(10.4.4.1) on TenGigE0/0/2/1 seq 0xe2a opt 0x52 flag 0x1 len 72, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.162 : ospf[1021]: Received LS REQ packet from 1.1.1.1/10.4.4.1, length 12, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.162 : ospf[1021]: Rcv DBD from 1.1.1.1(10.4.4.1) on TenGigE0/0/2/1 seq 0xe2a opt 0x52 flag 0 len 32 mtu 1500 state EXCHANGE vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.162 : ospf[1021]: Exchange Done with 1.1.1.1 on TenGigE0/0/2/1
RP/0/RSP0/CPU0:Oct 10 00:15:42.162 : ospf[1021]: sent LS REQ packet to 10.4.4.1, length 12, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.163 : ospf[1021]: Synchronized with 1.1.1.1 on TenGigE0/0/2/1, state FULL, vrf default vrfid 0x60000000
RP/0/RSP0/CPU0:Oct 10 00:15:42.163 : ospf[1021]: Flooding Stats for nbr 1.1.1.1, LSA-Req Sent: 1 packets, 1 LSAs; LSA Upd rec'ed: 1 packets, 1 LSAs, DBD-rec'ed: 2 packets, 1 LSAs
RP/0/RSP0/CPU0:Oct 10 00:15:42.163 : ospf[1021]: BFD session created with neighbor 10.4.4.1 on interface TenGigE0/0/2/1

LC/0/0/CPU0:Oct 10 00:15:42.171 : bfd_agent[125]: Tx IP: src 10.4.4.2, dst 10.4.4.1, plen 24. BFD: diag 0, state 1, P/F/C/A/D/M (0/0/1/0/0/0), mult 3, len 24, loc/rem discr 2148073477 0, tx 2000000, rx 2000000, rx echo 0

Regards,

Thiyagarajan B

Everyone's tags (1)
1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

This is how BFD is designed.

This is how BFD is designed. In this case BFD is a client of OSPF, not the other way around.

Fast reaction is typically required when links go down. When links come up you would typically want to ensure that the forwarding path is fully established before making use of it. Even if BFD would kick-start OSPF sooner, it would still take time for the OSPF to establish.

If you want to avoid OSPF going down on short link flaps, you could use the carrier delay down (and adjust the BFD timers accordingly)

4 REPLIES 4
Cisco Employee

This is how BFD is designed.

This is how BFD is designed. In this case BFD is a client of OSPF, not the other way around.

Fast reaction is typically required when links go down. When links come up you would typically want to ensure that the forwarding path is fully established before making use of it. Even if BFD would kick-start OSPF sooner, it would still take time for the OSPF to establish.

If you want to avoid OSPF going down on short link flaps, you could use the carrier delay down (and adjust the BFD timers accordingly)

Hi I am getting messages on

Hi I am getting messages on ASR connected with Nexus

008147: May 12 2017 00:33:42.367 CDT: %OSPF-5-ADJCHG: Process 4, Nbr 10.16.8.9 on TenGigabitEthernet0/1/0.801 from FULL to DOWN, Neighbor Down: BFD node down
008148: May 12 2017 00:33:42.396 CDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.16.0.2 on TenGigabitEthernet2/0/2.800 from FULL to DOWN, Neighbor Down: BFD node down
008149: May 12 2017 00:33:42.476 CDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.16.0.2 on TenGigabitEthernet0/1/0.800 from FULL to DOWN, Neighbor Down: BFD node down
008150: May 12 2017 00:33:42.498 CDT: %OSPF-5-ADJCHG: Process 8, Nbr 10.16.16.9 on TenGigabitEthernet0/1/0.802 from FULL to DOWN, Neighbor Down: BFD node down
008151: May 12 2017 00:33:42.928 CDT: %OSPF-5-ADJCHG: Process 8, Nbr 10.16.16.9 on TenGigabitEthernet0/1/0.802 from LOADING to FULL, Loading Done
008152: May 12 2017 00:33:42.938 CDT: %OSPF-5-ADJCHG: Process 4, Nbr 10.16.8.9 on TenGigabitEthernet0/1/0.801 from LOADING to FULL, Loading Done
008153: May 12 2017 00:33:43.031 CDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.16.0.2 on TenGigabitEthernet0/1/0.800 from LOADING to FULL, Loading Done
008154: May 12 2017 00:33:49.818 CDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.16.0.2 on TenGigabitEthernet2/0/2.800 from LOADING to FULL, Loading Done
008155: May 12 2017 00:34:18.461 CDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.16.0.2 on TenGigabitEthernet2/0/2.800 from FULL to DOWN, Neighbor Down: BFD node down
008156: May 12 2017 00:34:18.556 CDT: %OSPF-5-ADJCHG: Process 8, Nbr 10.16.16.9 on TenGigabitEthernet0/1/0.802 from FULL to DOWN, Neighbor Down: BFD node down
008157: May 12 2017 00:34:18.591 CDT: %OSPF-5-ADJCHG: Process 4, Nbr 10.16.8.9 on TenGigabitEthernet0/1/0.801 from FULL to DOWN, Neighbor Down: BFD node down
008158: May 12 2017 00:34:18.660 CDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.16.0.2 on TenGigabitEthernet0/1/0.800 from FULL to DOWN, Neighbor Down: BFD node down

sho bfd neighbors details

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.1.182 4306/1107317085 Up Up Te0/0/0.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.1.177
Handle: 12
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(1), Hello (hits): 2000(5498187)
Rx Count: 11500741, Rx Interval (ms) min/max/avg: 1/8210/848 last: 197 ms ago
Tx Count: 5498458, Tx Interval (ms) min/max/avg: 1/2008/1753 last: 280 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 18:35:00
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
--More--   My Discr.: 1107317085 - Your Discr.: 4306
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.1.190 4568/1107324499 Up Up Te0/1/0.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.1.185
Handle: 9
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376597)
Rx Count: 760925, Rx Interval (ms) min/max/avg: 1/1683/822 last: 200 ms ago
Tx Count: 376611, Tx Interval (ms) min/max/avg: 1/2005/1758 last: 1343 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
--More--   Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107324499 - Your Discr.: 4568
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.10 4412/0 Down Down Gi1/1/5.800
Session Host: Software
OurAddr: 10.16.3.9
Handle: 3
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 5
Received MinRxInt: 0, Received Multiplier: 0
Holddown (hits): 0(0), Hello (hits): 1000(6346007)
Rx Count: 0, Rx Interval (ms) min/max/avg: 0/0/0 last: 4294967295 ms ago
Tx Count: 6346007, Tx Interval (ms) min/max/avg: 754/1010/877 last: 155 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: OSPF CEF
Last packet: Version: 1 - Diagnostic: 0
--More--   State bit: AdminDown - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 0 - Length: 0
My Discr.: 0 - Your Discr.: 0
Min tx interval: 0 - Min rx interval: 0
Min Echo interval: 0

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.46 4564/0 Down Down Te2/0/0.800
Session Host: Software
OurAddr: 10.16.3.41
Handle: 2
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 5
Received MinRxInt: 0, Received Multiplier: 0
Holddown (hits): 0(0), Hello (hits): 1000(752572)
Rx Count: 0, Rx Interval (ms) min/max/avg: 0/0/0 last: 4294967295 ms ago
Tx Count: 752572, Tx Interval (ms) min/max/avg: 754/1005/878 last: 568 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: OSPF CEF
--More--  Last packet: Version: 1 - Diagnostic: 0
State bit: AdminDown - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 0 - Length: 0
My Discr.: 0 - Your Discr.: 0
Min tx interval: 0 - Min rx interval: 0
Min Echo interval: 0

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.66 4565/1107317104 Up Up Te2/0/1.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.3.65
Handle: 6
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376684)
Rx Count: 758158, Rx Interval (ms) min/max/avg: 1/1942/848 last: 0 ms ago
Tx Count: 376710, Tx Interval (ms) min/max/avg: 1/2005/1758 last: 358 ms ago
--More--  Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 18:35:01
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107317104 - Your Discr.: 4565
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.74 4498/1107324501 Up Up Te2/0/2.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.3.73
Handle: 15
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
--More--  Holddown (hits): 0(1), Hello (hits): 2000(1939070)
Rx Count: 3900157, Rx Interval (ms) min/max/avg: 1/6720/822 last: 467 ms ago
Tx Count: 1939661, Tx Interval (ms) min/max/avg: 1/2007/1757 last: 1123 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107324501 - Your Discr.: 4498
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.9.182 4128/1107317107 Up Up Te0/0/0.801
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.9.177
Handle: 5
--More--  Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(1), Hello (hits): 2000(30962360)
Rx Count: 64019066, Rx Interval (ms) min/max/avg: 1/645328/848 last: 585 ms ago
Tx Count: 30962966, Tx Interval (ms) min/max/avg: 1/2012/1756 last: 153 ms ago
Elapsed time watermarks: 2 2 (last: 2)
Registered protocols: CEF OSPF
Uptime: 18:34:58
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107317107 - Your Discr.: 4128
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.9.190 4566/1107324487 Up Up Te0/1/0.801
Session state is UP and using echo function with 250 ms interval.
--More--  Session Host: Software
OurAddr: 10.16.9.185
Handle: 7
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376620)
Rx Count: 760929, Rx Interval (ms) min/max/avg: 1/1683/822 last: 18 ms ago
Tx Count: 376634, Tx Interval (ms) min/max/avg: 1/2005/1756 last: 1011 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107324487 - Your Discr.: 4566
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
--More--  10.16.17.182 4567/1107317109 Up Up Te0/0/0.802
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.17.177
Handle: 8
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376727)
Rx Count: 758136, Rx Interval (ms) min/max/avg: 1/4778/848 last: 132 ms ago
Tx Count: 376753, Tx Interval (ms) min/max/avg: 1/2005/1750 last: 213 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 18:34:57
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107317109 - Your Discr.: 4567
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000
--More--  
IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.17.190 4560/1107324502 Up Up Te0/1/0.802
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.17.185
Handle: 4
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(770996)
Rx Count: 1510680, Rx Interval (ms) min/max/avg: 1/7855/822 last: 437 ms ago
Tx Count: 771252, Tx Interval (ms) min/max/avg: 1/2005/1756 last: 766 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
--More--   My Discr.: 1107324502 - Your Discr.: 4560
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.19.46 4411/4100 Up Up Gi1/1/5.802
Session state is UP and using echo function with 400 ms interval.
Session Host: Software
OurAddr: 10.16.19.41
Handle: 1
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 5
Received MinRxInt: 1000000, Received Multiplier: 5
Holddown (hits): 0(0), Hello (hits): 1000(6345690)
Rx Count: 6350593, Rx Interval (ms) min/max/avg: 1/1036/876 last: 876 ms ago
Tx Count: 6345692, Tx Interval (ms) min/max/avg: 17/1012/879 last: 465 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: OSPF CEF
Uptime: 9w1d
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
--More--   Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 5 - Length: 24
My Discr.: 4100 - Your Discr.: 4411
Min tx interval: 1000000 - Min rx interval: 1000000
Min Echo interval: 400000
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#sho ip ospf
Routing Process "ospf 3" with ID 10.16.0.45
Start time: 00:01:43.621, Time elapsed: 1y46w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Event-log enabled, Maximum number of events: 1000, Mode: cyclic
It is an autonomous system boundary router
Redistributing External Routes from,
ospf 1 with metric mapped to 1001, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 515. Checksum Sum 0xFCC60E
Number of opaque AS LSA 0. Checksum Sum 0x000000
--More--   Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 2
Area has no authentication
SPF algorithm last executed 40w0d ago
SPF algorithm executed 8 times
Area ranges are
Number of LSA 3. Checksum Sum 0x025A78
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 100" with ID 172.19.23.26
--More--   Domain ID type 0x0005, value 0.0.0.100
Start time: 2w0d, Time elapsed: 1y44w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF epci
Event-log disabled
It is an area border router
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 0. Checksum Sum 0x000000
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 3
Area has message digest authentication
SPF algorithm last executed 1w0d ago
SPF algorithm executed 1590 times
Area ranges are
Number of LSA 16. Checksum Sum 0x094B77
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 6" with ID 10.16.8.45
Domain ID type 0x0005, value 0.0.0.6
Start time: 00:01:43.622, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF mrk
Event-log disabled
It is an area border and autonomous system boundary router
Redistributing External Routes from,
ospf 4 with metric mapped to 1000, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2630. Checksum Sum 0x523E645
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0) (Inactive)
Number of interfaces in this area is 1
Area has no authentication
SPF algorithm last executed 1y31w ago
SPF algorithm executed 3 times
Area ranges are
Number of LSA 1. Checksum Sum 0x00C367
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 2" with ID 10.16.0.44
Start time: 00:01:43.621, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Event-log enabled, Maximum number of events: 1000, Mode: cyclic
It is an autonomous system boundary router
Redistributing External Routes from,
ospf 1 with metric mapped to 1000, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 461. Checksum Sum 0xED1989
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
--More--   Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 2
Area has no authentication
SPF algorithm last executed 1y31w ago
SPF algorithm executed 4 times
Area ranges are
Number of LSA 2. Checksum Sum 0x00C3E8
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 5" with ID 10.16.8.44
Domain ID type 0x0005, value 0.0.0.5
Start time: 00:01:43.624, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF mrk
Event-log disabled
It is an area border and autonomous system boundary router
Redistributing External Routes from,
ospf 4 with metric mapped to 1001, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2630. Checksum Sum 0x5268FEA
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0) (Inactive)
Number of interfaces in this area is 1
Area has no authentication
SPF algorithm last executed 1y31w ago
SPF algorithm executed 3 times
Area ranges are
Number of LSA 1. Checksum Sum 0x00D757
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 1" with ID 10.16.0.4
Start time: 00:01:43.620, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Event-log enabled, Maximum number of events: 1000, Mode: cyclic
It is an autonomous system boundary router
Redistributing External Routes from,
connected, includes subnets in redistribution
ospf 2 with metric mapped to 1000, includes subnets in redistribution
ospf 3 with metric mapped to 1000, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2059. Checksum Sum 0x4157189
Number of opaque AS LSA 0. Checksum Sum 0x000000
--More--   Number of DCbitless external and opaque AS LSA 329
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 8
Area has no authentication
SPF algorithm last executed 07:25:30.965 ago
SPF algorithm executed 892077 times
Area ranges are
Number of LSA 1122. Checksum Sum 0x23BDF78
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 162
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 8" with ID 10.16.16.10
--More--   Domain ID type 0x0005, value 0.0.0.8
Start time: 00:01:43.619, Time elapsed: 1y46w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF fgl
Event-log disabled
It is an area border router
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 3. Checksum Sum 0x0111DF
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 3
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 5
Area has no authentication
SPF algorithm last executed 18:35:05.715 ago
SPF algorithm executed 1471 times
Area ranges are
Number of LSA 10. Checksum Sum 0x04A97C
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 5
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 4" with ID 10.16.8.10
Domain ID type 0x0005, value 0.0.0.4
--More--   Start time: 00:01:43.617, Time elapsed: 1y46w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF mrk
Event-log disabled
It is an area border and autonomous system boundary router
Redistributing External Routes from,
connected, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2960. Checksum Sum 0x5A98C02
Number of opaque AS LSA 0. Checksum Sum 0x000000
--More--   Number of DCbitless external and opaque AS LSA 2470
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 5
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 5
Area has no authentication
SPF algorithm last executed 18:35:05.873 ago
SPF algorithm executed 3860 times
Area ranges are
Number of LSA 45. Checksum Sum 0x169ECD
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 23
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list lengt

sho bfd neighbors details

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.1.182 4306/1107317085 Up Up Te0/0/0.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.1.177
Handle: 12
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(1), Hello (hits): 2000(5498187)
Rx Count: 11500741, Rx Interval (ms) min/max/avg: 1/8210/848 last: 197 ms ago
Tx Count: 5498458, Tx Interval (ms) min/max/avg: 1/2008/1753 last: 280 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 18:35:00
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
--More--   My Discr.: 1107317085 - Your Discr.: 4306
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.1.190 4568/1107324499 Up Up Te0/1/0.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.1.185
Handle: 9
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376597)
Rx Count: 760925, Rx Interval (ms) min/max/avg: 1/1683/822 last: 200 ms ago
Tx Count: 376611, Tx Interval (ms) min/max/avg: 1/2005/1758 last: 1343 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
--More--   Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107324499 - Your Discr.: 4568
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.10 4412/0 Down Down Gi1/1/5.800
Session Host: Software
OurAddr: 10.16.3.9
Handle: 3
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 5
Received MinRxInt: 0, Received Multiplier: 0
Holddown (hits): 0(0), Hello (hits): 1000(6346007)
Rx Count: 0, Rx Interval (ms) min/max/avg: 0/0/0 last: 4294967295 ms ago
Tx Count: 6346007, Tx Interval (ms) min/max/avg: 754/1010/877 last: 155 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: OSPF CEF
Last packet: Version: 1 - Diagnostic: 0
--More--   State bit: AdminDown - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 0 - Length: 0
My Discr.: 0 - Your Discr.: 0
Min tx interval: 0 - Min rx interval: 0
Min Echo interval: 0

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.46 4564/0 Down Down Te2/0/0.800
Session Host: Software
OurAddr: 10.16.3.41
Handle: 2
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 5
Received MinRxInt: 0, Received Multiplier: 0
Holddown (hits): 0(0), Hello (hits): 1000(752572)
Rx Count: 0, Rx Interval (ms) min/max/avg: 0/0/0 last: 4294967295 ms ago
Tx Count: 752572, Tx Interval (ms) min/max/avg: 754/1005/878 last: 568 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: OSPF CEF
--More--  Last packet: Version: 1 - Diagnostic: 0
State bit: AdminDown - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 0 - Length: 0
My Discr.: 0 - Your Discr.: 0
Min tx interval: 0 - Min rx interval: 0
Min Echo interval: 0

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.66 4565/1107317104 Up Up Te2/0/1.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.3.65
Handle: 6
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376684)
Rx Count: 758158, Rx Interval (ms) min/max/avg: 1/1942/848 last: 0 ms ago
Tx Count: 376710, Tx Interval (ms) min/max/avg: 1/2005/1758 last: 358 ms ago
--More--  Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 18:35:01
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107317104 - Your Discr.: 4565
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.3.74 4498/1107324501 Up Up Te2/0/2.800
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.3.73
Handle: 15
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
--More--  Holddown (hits): 0(1), Hello (hits): 2000(1939070)
Rx Count: 3900157, Rx Interval (ms) min/max/avg: 1/6720/822 last: 467 ms ago
Tx Count: 1939661, Tx Interval (ms) min/max/avg: 1/2007/1757 last: 1123 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107324501 - Your Discr.: 4498
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.9.182 4128/1107317107 Up Up Te0/0/0.801
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.9.177
Handle: 5
--More--  Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(1), Hello (hits): 2000(30962360)
Rx Count: 64019066, Rx Interval (ms) min/max/avg: 1/645328/848 last: 585 ms ago
Tx Count: 30962966, Tx Interval (ms) min/max/avg: 1/2012/1756 last: 153 ms ago
Elapsed time watermarks: 2 2 (last: 2)
Registered protocols: CEF OSPF
Uptime: 18:34:58
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107317107 - Your Discr.: 4128
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.9.190 4566/1107324487 Up Up Te0/1/0.801
Session state is UP and using echo function with 250 ms interval.
--More--  Session Host: Software
OurAddr: 10.16.9.185
Handle: 7
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376620)
Rx Count: 760929, Rx Interval (ms) min/max/avg: 1/1683/822 last: 18 ms ago
Tx Count: 376634, Tx Interval (ms) min/max/avg: 1/2005/1756 last: 1011 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107324487 - Your Discr.: 4566
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
--More--  10.16.17.182 4567/1107317109 Up Up Te0/0/0.802
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.17.177
Handle: 8
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(376727)
Rx Count: 758136, Rx Interval (ms) min/max/avg: 1/4778/848 last: 132 ms ago
Tx Count: 376753, Tx Interval (ms) min/max/avg: 1/2005/1750 last: 213 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 18:34:57
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
My Discr.: 1107317109 - Your Discr.: 4567
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000
--More--  
IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.17.190 4560/1107324502 Up Up Te0/1/0.802
Session state is UP and using echo function with 250 ms interval.
Session Host: Software
OurAddr: 10.16.17.185
Handle: 4
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 3
Received MinRxInt: 2000000, Received Multiplier: 3
Holddown (hits): 0(0), Hello (hits): 2000(770996)
Rx Count: 1510680, Rx Interval (ms) min/max/avg: 1/7855/822 last: 437 ms ago
Tx Count: 771252, Tx Interval (ms) min/max/avg: 1/2005/1756 last: 766 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: CEF OSPF
Uptime: 2d05h
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 3 - Length: 24
--More--   My Discr.: 1107324502 - Your Discr.: 4560
Min tx interval: 250000 - Min rx interval: 2000000
Min Echo interval: 50000

IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
10.16.19.46 4411/4100 Up Up Gi1/1/5.802
Session state is UP and using echo function with 400 ms interval.
Session Host: Software
OurAddr: 10.16.19.41
Handle: 1
Local Diag: 0, Demand mode: 0, Poll bit: 0
MinTxInt: 1000000, MinRxInt: 1000000, Multiplier: 5
Received MinRxInt: 1000000, Received Multiplier: 5
Holddown (hits): 0(0), Hello (hits): 1000(6345690)
Rx Count: 6350593, Rx Interval (ms) min/max/avg: 1/1036/876 last: 876 ms ago
Tx Count: 6345692, Tx Interval (ms) min/max/avg: 17/1012/879 last: 465 ms ago
Elapsed time watermarks: 0 0 (last: 0)
Registered protocols: OSPF CEF
Uptime: 9w1d
Last packet: Version: 1 - Diagnostic: 0
State bit: Up - Demand bit: 0
--More--   Poll bit: 0 - Final bit: 0
C bit: 0
Multiplier: 5 - Length: 24
My Discr.: 4100 - Your Discr.: 4411
Min tx interval: 1000000 - Min rx interval: 1000000
Min Echo interval: 400000
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#
WDC-WAN-CTC-ASR1006-2#sho ip ospf
Routing Process "ospf 3" with ID 10.16.0.45
Start time: 00:01:43.621, Time elapsed: 1y46w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Event-log enabled, Maximum number of events: 1000, Mode: cyclic
It is an autonomous system boundary router
Redistributing External Routes from,
ospf 1 with metric mapped to 1001, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 515. Checksum Sum 0xFCC60E
Number of opaque AS LSA 0. Checksum Sum 0x000000
--More--   Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 2
Area has no authentication
SPF algorithm last executed 40w0d ago
SPF algorithm executed 8 times
Area ranges are
Number of LSA 3. Checksum Sum 0x025A78
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 100" with ID 172.19.23.26
--More--   Domain ID type 0x0005, value 0.0.0.100
Start time: 2w0d, Time elapsed: 1y44w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF epci
Event-log disabled
It is an area border router
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 0. Checksum Sum 0x000000
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 3
Area has message digest authentication
SPF algorithm last executed 1w0d ago
SPF algorithm executed 1590 times
Area ranges are
Number of LSA 16. Checksum Sum 0x094B77
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 6" with ID 10.16.8.45
Domain ID type 0x0005, value 0.0.0.6
Start time: 00:01:43.622, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF mrk
Event-log disabled
It is an area border and autonomous system boundary router
Redistributing External Routes from,
ospf 4 with metric mapped to 1000, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2630. Checksum Sum 0x523E645
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0) (Inactive)
Number of interfaces in this area is 1
Area has no authentication
SPF algorithm last executed 1y31w ago
SPF algorithm executed 3 times
Area ranges are
Number of LSA 1. Checksum Sum 0x00C367
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 2" with ID 10.16.0.44
Start time: 00:01:43.621, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Event-log enabled, Maximum number of events: 1000, Mode: cyclic
It is an autonomous system boundary router
Redistributing External Routes from,
ospf 1 with metric mapped to 1000, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 461. Checksum Sum 0xED1989
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
Number of DoNotAge external and opaque AS LSA 0
--More--   Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 2
Area has no authentication
SPF algorithm last executed 1y31w ago
SPF algorithm executed 4 times
Area ranges are
Number of LSA 2. Checksum Sum 0x00C3E8
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 5" with ID 10.16.8.44
Domain ID type 0x0005, value 0.0.0.5
Start time: 00:01:43.624, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF mrk
Event-log disabled
It is an area border and autonomous system boundary router
Redistributing External Routes from,
ospf 4 with metric mapped to 1001, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2630. Checksum Sum 0x5268FEA
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 0
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0) (Inactive)
Number of interfaces in this area is 1
Area has no authentication
SPF algorithm last executed 1y31w ago
SPF algorithm executed 3 times
Area ranges are
Number of LSA 1. Checksum Sum 0x00D757
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 0
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 1" with ID 10.16.0.4
Start time: 00:01:43.620, Time elapsed: 1y46w
--More--   Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Event-log enabled, Maximum number of events: 1000, Mode: cyclic
It is an autonomous system boundary router
Redistributing External Routes from,
connected, includes subnets in redistribution
ospf 2 with metric mapped to 1000, includes subnets in redistribution
ospf 3 with metric mapped to 1000, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2059. Checksum Sum 0x4157189
Number of opaque AS LSA 0. Checksum Sum 0x000000
--More--   Number of DCbitless external and opaque AS LSA 329
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 8
Area has no authentication
SPF algorithm last executed 07:25:30.965 ago
SPF algorithm executed 892077 times
Area ranges are
Number of LSA 1122. Checksum Sum 0x23BDF78
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 162
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 8" with ID 10.16.16.10
--More--   Domain ID type 0x0005, value 0.0.0.8
Start time: 00:01:43.619, Time elapsed: 1y46w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF fgl
Event-log disabled
It is an area border router
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 3. Checksum Sum 0x0111DF
Number of opaque AS LSA 0. Checksum Sum 0x000000
Number of DCbitless external and opaque AS LSA 3
--More--   Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 0
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 5
Area has no authentication
SPF algorithm last executed 18:35:05.715 ago
SPF algorithm executed 1471 times
Area ranges are
Number of LSA 10. Checksum Sum 0x04A97C
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 5
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list length 0

Routing Process "ospf 4" with ID 10.16.8.10
Domain ID type 0x0005, value 0.0.0.4
--More--   Start time: 00:01:43.617, Time elapsed: 1y46w
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Link-local Signaling (LLS)
Supports area transit capability
Supports NSSA (compatible with RFC 3101)
Connected to MPLS VPN Superbackbone, VRF mrk
Event-log disabled
It is an area border and autonomous system boundary router
Redistributing External Routes from,
connected, includes subnets in redistribution
Router is not originating router-LSAs with maximum metric
Initial SPF schedule delay 5000 msecs
Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs
Incremental-SPF disabled
Minimum LSA interval 5 secs
Minimum LSA arrival 1000 msecs
LSA group pacing timer 240 secs
Interface flood pacing timer 33 msecs
Retransmission pacing timer 66 msecs
Number of external LSA 2960. Checksum Sum 0x5A98C02
Number of opaque AS LSA 0. Checksum Sum 0x000000
--More--   Number of DCbitless external and opaque AS LSA 2470
Number of DoNotAge external and opaque AS LSA 0
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Number of areas transit capable is 0
External flood list length 5
IETF NSF helper support enabled
Cisco NSF helper support enabled
BFD is enabled
Reference bandwidth unit is 1000000 mbps
Area BACKBONE(0)
Number of interfaces in this area is 5
Area has no authentication
SPF algorithm last executed 18:35:05.873 ago
SPF algorithm executed 3860 times
Area ranges are
Number of LSA 45. Checksum Sum 0x169ECD
Number of opaque link LSA 0. Checksum Sum 0x000000
Number of DCbitless LSA 23
Number of indication LSA 0
Number of DoNotAge LSA 0
Flood list lengt

Hi

Hi

In addition to Aleks explanation below about waiting for the link and control plane to be ready to carry traffic on link ip, is this a point to point link ?  If so ospf point to point (ie without DR election) may help to bring up OSPF a little faster. 

Beginner

Be careful how you change the

Be careful how you change the way the OSPF Finite State Machine works. If you were to significantly reduce the time it takes for OSPF to initiate, you need to consider the impact of LSA flooding.

This problem would be amplified if you were to have a layer 1 link flap. Imagine OSPF constantly going up and down in a single large area. This could also trigger an SNMP flood to the NOC.

Adding timers to throttle LSAs should be considered when using BFD.

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