02-18-2016 04:31 AM - edited 03-01-2019 08:12 AM
We have 2 N7K connected with each other on the Ethernet 1/1 interface.
N7K-eth1/1 <-> N7K-eth1/1
The problem is that bfd shows down.
N7K1# sh bfd neig interface eth1/1
OurAddr NeighAddr LD/RD RH/RS Holdown(mu
lt) State Int Vrf
10.165.0.2 10.165.0.1 1140850702/0 Down N/A(3)
Down Eth1/1 default
N7K2# sh bfd neig interface eth1/1
OurAddr NeighAddr LD/RD RH/RS Holdown(mu
lt) State Int Vrf
10.165.0.1 10.165.0.2 1107296257/0 Down N/A(3)
Down Eth1/1 default
Both have run the same NXOS, same BFD config, same ospf config (just router-id differs) and same interface eth1/1 config (just ip that differs):
N7K1# sh run bfd
!Command: show running-config bfd
!Time: Thu Feb 18 13:21:18 2016
version 7.2(1)D1(1)
feature bfd
ip pim bfd
hsrp bfd all-interfaces
router ospf GLOBAL
bfd
fabricpath domain default
bfd
router ospf GLOBAL
bfd
router-id 1.1.1.1
auto-cost reference-bandwidth 400 Gbps
mpls ldp autoconfig area 0.0.0.0
mpls ldp sync
interface Ethernet1/1
cts manual
no propagate-sgt
sap pmk abba000000000000000000000000000000000000000000000000000000000000
mtu 9216
no ip redirects
ip address 10.165.0.1/30
no ipv6 redirects
ip ospf network point-to-point
ip router ospf GLOBAL area 0.0.0.0
ip pim sparse-mode
no shutdown
We have this between 2 others N7k without any problem. BFD shows up.
Any idea what to look for in my problem described above?
02-18-2016 05:35 AM
Hello Gier,
Are the ports Eth1/1 physically up ? And which Linecard are you using in slot 1 ?
Get the following cli output :
show module
Cheers !
02-18-2016 05:55 AM
Yes all interfaces are up. Both N7K are identical, same sup and modules.
N7K1# sh int status
--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
Eth1/1 -- connected routed full 10G 10Gbase-SR
Eth1/2 -- connected routed full 10G 10Gbase-SR
Eth2/1/1 -- connected f-path full 10G QSFP-40G-SR
Eth2/1/2 -- connected f-path full 10G QSFP-40G-SR
Eth2/1/3 -- connected f-path full 10G QSFP-40G-SR
Eth2/1/4 -- connected f-path full 10G QSFP-40G-SR
Eth2/2/1 -- connected f-path full 10G QSFP-40G-SR
Eth2/2/2 -- connected f-path full 10G QSFP-40G-SR
Eth2/2/3 -- connected f-path full 10G QSFP-40G-SR
Eth2/2/4 -- connected f-path full 10G QSFP-40G-SR
Eth2/3 -- xcvrAbsen f-path auto auto --
Eth2/4 -- xcvrAbsen f-path auto auto --
Eth2/5 -- xcvrAbsen f-path auto auto --
Eth2/6 -- xcvrAbsen f-path auto auto --
Eth2/7 -- xcvrAbsen f-path auto auto --
Eth2/8 -- xcvrAbsen f-path auto auto --
Eth2/9 -- xcvrAbsen f-path auto auto --
Eth2/10 -- xcvrAbsen f-path auto auto --
Eth2/11 -- xcvrAbsen f-path auto auto --
Eth2/12 -- xcvrAbsen f-path auto auto --
Eth3/17 -- connected routed full a-10G 10Gbase-SR
Eth3/18 -- connected routed full a-10G 10Gbase-SR
Eth3/19 -- connected routed full a-10G 10Gbase-SR
Eth3/20 -- connected routed full a-10G 10Gbase-SR
Eth3/21 -- sfpAbsent routed auto auto --
Eth3/22 -- sfpAbsent routed auto auto --
Eth3/23 -- sfpAbsent routed auto auto --
Eth3/24 -- sfpAbsent routed auto auto --
Po11 -- connected routed full a-10G --
Lo0 -- connected routed auto auto --
Vlan1 -- down routed auto auto --
Vlan615 -- connected routed auto auto --
Vlan697 Management connected routed auto auto --
Vlan1200 -- connected routed auto auto --
N7K1# sh module
Mod Ports Module-Type Model Status
--- ----- ----------------------------------- ------------------ ----------
1 24 10 Gbps Ethernet Module N7K-M224XP-23L ok
2 12 10/40 Gbps Ethernet Module N7K-F312FQ-25 ok
3 48 1/10 Gbps Ethernet Module N7K-F348XP-25 ok
5 0 Supervisor Module-2 N7K-SUP2E active *
6 0 Supervisor Module-2 N7K-SUP2E ha-standby
Mod Sw Hw
--- --------------- ------
1 7.2(1)D1(1) 2.3
2 7.2(1)D1(1) 1.0
3 7.2(1)D1(1) 0.2
5 7.2(1)D1(1) 6.0
6 7.2(1)D1(1) 6.0
Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 9c-57-ad-2b-b4-a0 to 9c-57-ad-2b-b4-bb JAE193802CQ
2 54-4a-00-ac-09-d8 to 54-4a-00-ac-0a-13 JAE181002PX
3 74-a2-e6-7a-0b-40 to 74-a2-e6-7a-0b-7b JAE185103DV
5 e4-c7-22-10-2f-4f to e4-c7-22-10-2f-61 JAF1748AFJR
6 e4-c7-22-0f-dd-13 to e4-c7-22-0f-dd-25 JAF1748AFKG
Mod Online Diag Status
--- ------------------
1 Pass
2 Pass
3 Pass
5 Pass
6 Pass
Xbar Ports Module-Type Model Status
--- ----- ----------------------------------- ------------------ ----------
1 0 Fabric Module 2 N7K-C7010-FAB-2 ok
2 0 Fabric Module 2 N7K-C7010-FAB-2 ok
3 0 Fabric Module 2 N7K-C7010-FAB-2 ok
4 0 Fabric Module 2 N7K-C7010-FAB-2 ok
5 0 Fabric Module 2 N7K-C7010-FAB-2 ok
Xbar Sw Hw
--- --------------- ------
1 NA 1.5
2 NA 1.5
3 NA 1.5
4 NA 1.5
5 NA 1.5
Xbar MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 NA JAF1749AFAB
2 NA JAF1749AMCA
3 NA JAF1746BEFB
4 NA JAF1749AFDF
5 NA JAF1748AEQR
* this terminal session
02-18-2016 07:28 AM
Thanks ! Pls get the following 2 cli outputs from working & non-working N7k boxes.
show feature | in enable
show running-config bfd all
show running-config interface eth1/1 all
Next, get the below cli output from non-working box -
show system internal bfd event-history errors
show bfd neighbors interface eth1/1 details
show system internal bfd sess-store
Next attach to module-1
attach module 1
show system internal bfd sess-store
show system internal bfd event-history errors
Cheers !
02-18-2016 11:32 PM
02-23-2016 06:39 AM
Well, it seems to be working now.
Since this N7K has 2 sup2, we did a switchover between the sup's and then it came up.
Switched back and still up.
Geir
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