ā02-10-2011 01:21 PM - edited ā03-06-2019 03:29 PM
Hi all,
I have a 3745 router configured as a BGP gateway, and I have two tunnels setup for IPV6, tunnel 10 is working fine, but tunnel 100 is constantly dropping.
I am getting a (hold time expired) error on tunnel 100, I configured my BGP default setting to 60 sec Keep alive, and 180 sec Hold time, I ask Hurricane Electric and they are saying they have the same timer config on their end, Like I said tunnel 10, and tunnel 100 have the same configuration, but only tunnel 100 is giving this message errors of the hold time expired and my tunnel link is always going up and down.
Maybe I am missing a configuration on my router, I have been researching how to solve this issue for the past 3 days, and still I canāt make this Tunnel 100 stay up!!!!!!!!!!!!!
Any help will be highly appreciated..
danny
ā¦ā¦ā¦ā¦.This is the error message I am getting
*Mar 1 19:33:14.411: %BGP-3-NOTIFICATION: received from neighbor 2001:470:13:A5::1 4/0 (hold time expired) 0 bytes
*Mar 1 19:33:14.411: %BGP-5-ADJCHANGE: neighbor 2001:470:13:A5::1 Down BGP Notification received
*Mar 1 19:33:42.183: %BGP-5-ADJCHANGE: neighbor 2001:470:13:A5::1 Up
This is the configuration I am using on my router
C3745_IPV6-RTR1#
C3745_IPV6-RTR1#show ver
Cisco IOS Software, 3700 Software (C3745-ADVIPSERVICESK9-M), Version 12.3(11)YZ2, RELEASE SOFTWARE (fc2)
Compiled Thu 09-Aug-07 03:44 by dchih
ROM: System Bootstrap, Version 12.2(8r)T2, RELEASE SOFTWARE (fc1)
C3745_IPV6-RTR1 uptime is 1 hour, 8 minutes
System returned to ROM by reload
System image file is "slot0:c3745-advipservicesk9-mz.123-11.YZ2.bin"
Cisco 3745 (R7000) processor (revision 2.0) with 112640K/18432K bytes of memory.
Processor board ID JMX0704L246
R7000 CPU at 350MHz, Implementation 39, Rev 3.3, 256KB L2, 2048KB L3 Cache
2 FastEthernet interfaces
DRAM configuration is 64 bits wide with parity disabled.
151K bytes of NVRAM.
31296K bytes of ATA System CompactFlash (Read/Write)
62720K bytes of ATA Slot0 CompactFlash (Read/Write)
Configuration register is 0x2102
C3745_IPV6-RTR1#show run
Building configuration...
Current configuration : 3261 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service compress-config
!
hostname C3745_IPV6-RTR1
!
boot-start-marker
boot system slot0:c3745-advipservicesk9-mz.123-11.YZ2.bin
boot-end-marker
!!
no aaa new-model
ip subnet-zero
ip cef
!
ip name-server 2001:470:20::2
ip name-server 200.32.248.1
ip ips po max-events 100
ipv6 unicast-routing
ipv6 cef
ipv6 multicast-routing
!!
no crypto isakmp ccm
!
interface Tunnel10
description Hurricane Electric 1st IPv6 Tunnel
no ip address
ipv6 address 2001:470:13:85::2/64
ipv6 enable
tunnel source 200.32.250.29
tunnel destination 216.66.70.2
tunnel mode ipv6ip
!
interface Tunnel100
description Hurricane Elec-2nd-IPv6 Tunnel
no ip address
ipv6 address 2001:470:13:A5::2/64
ipv6 enable
tunnel source 200.32.198.121
tunnel destination 216.66.70.2
tunnel mode ipv6ip
!!
interface Loopback20
ip address 10.1.0.26 255.255.255.255
shutdown
!
interface FastEthernet0/0
no ip address
speed 100
full-duplex
ipv6 enable
!
interface FastEthernet0/0.10
description *** PUCLIC INTERFACE ***
encapsulation dot1Q 10
ip address 200.32.250.29 255.255.255.224
ip nat outside
ip virtual-reassembly
!
interface FastEthernet0/0.889
description *** block for 2nd tunnel***
encapsulation dot1Q 889
ip address 200.32.198.121 255.255.255.224
ip virtual-reassembly
no cdp enable
!
!
interface FastEthernet0/1
no ip address
speed 100
full-duplex
ipv6 enable
!
router bgp 10269
no synchronization
bgp log-neighbor-changes
neighbor 2001:470:13:85::1 remote-as 6939
neighbor 2001:470:13:A5::1 remote-as 6939
no auto-summary
!
address-family ipv6
neighbor 2001:470:13:85::1 activate
neighbor 2001:470:13:A5::1 activate
network 2800:410::/32
exit-address-family
!
ip classless
ip route 0.0.0.0 0.0.0.0 200.32.250.1
!
access-list 10 permit 192.168.0.0 0.0.255.255
ipv6 route 2800:410:890:1::/64 2001:470:13:A5::1
ipv6 route 2800:410::/32 Null0
ipv6 route ::/0 Tunnel0
ipv6 nat v6v4 source list ptv6-list1 pool v4pool
ipv6 nat v6v4 pool v4pool 200.32.250.37 200.32.250.43 prefix-length 27
ipv6 nat prefix 2800:410:890:1::/96
!!
ipv6 access-list ptv6-list1
permit ipv6 2800:410:890:1::/64 any
!
control-plane
!!
line con 0
line aux 0
Solved! Go to Solution.
ā02-11-2011 02:12 PM
ā02-10-2011 01:34 PM
Hello Danny,
both tunnels have the same tunnel destination IPv4 address, this might be part of the problem depending on the remote device capabilities.
To check this try to disable tunnel 10 and see if tunnel 100 becomes stable. if so it is likely then attempting to enable again tunnel 10 may lead again to instability.
have you also verified that the tunnel destination can be pinged successfully from tunnel 100 local source ? And for tunnel 10?
Hope to help
Giuseppe
ā02-10-2011 02:03 PM
Giuseppe,
I completely delete tunnel10, I can ping successfully tunnel destination 216.66.70.2, from the two source address which are 200.32.198.121 for tunnel 100, and 200.32.250.29 for tunnel 10 when I did an extended ping,
As soon as I deleted tunnel 10, I got this new error message when trying to ping 2001:470:13:A5::1 link address on tunnel 100.
*Sep 12 20:20:11.363: %ALIGN-3-SPURIOUS: Spurious memory access made at 0x6291CA38 reading 0x34
*Sep 12 20:20:11.363: %ALIGN-3-TRACE: -Traceback= 6291CA38 626A5828 60DEBBB8 60E1BC64 60E1BFBC 60DCE298 00000000 00000000
Tunnel is still giving me the Hold time error expired, and this is the new config I have on my router,,
Any other suggestions??????
Thanks for your rapid replay Giuseppe,
danny
New config
interface Tunnel100
description Hurricane Elec-2nd-IPv6 Tunnel
no ip address
ipv6 address 2001:470:13:A5::2/64
ipv6 enable
tunnel source 200.32.198.121
tunnel destination 216.66.70.2
tunnel mode ipv6ip
!
interface FastEthernet0/0.889
description *** block for 2nd tunnel***
encapsulation dot1Q 889
ip address 200.32.198.121 255.255.255.224
ip virtual-reassembly
no cdp enable
router bgp 10269
no synchronization
bgp log-neighbor-changes
neighbor 2001:470:13:A5::1 remote-as 6939
no auto-summary
!
address-family ipv6
neighbor 2001:470:13:A5::1 activate
network 2800:410::/32
exit-address-family
!
ā02-11-2011 02:12 PM
n
ā02-11-2011 02:19 PM
I ask my friend Mr. Lamb to please place the message for me..
i am still having problems with this TUnnel///////////
I did a ""show ip bgp neighbors"" and notice that with the 2001:470:13:A5::2 tunnel it has this message ""āāāā Configured hold time is 180,keepalive interval is 60 seconds Minimum holdtime from neighbor is 0 secondsāāāā , but not on the 2001:470:13:85::2 tunnel i dont no why only one tunnel is showing that message???????
I completely delete tunnel 10, and left only with tunnel 100, but the link doesn't come up at all, any suggestion that I can test????, i was thinking to ask Hurricane side and see if they can provide to me a diffrent IPv4 link address for teh 2nd tunnel and see if that works????
Thanks for your help....
DAnny
C3745_IPV6-RTR1#show ip bgp neighbors
BGP neighbor is 2001:470:13:85::1, remote AS 6939, external link
BGP version 4, remote router ID 72.52.92.142
BGP state = Established, up for 03:50:44
Last read 00:00:03, hold time is 180, keepalive interval is 60 seconds
Neighbor capabilities:
Route refresh: advertised and received(old & new)
Address family BGP IPv4: advertised
Address family BGP IPv6: advertised and received
Message statistics:
InQ depth is 0
OutQ depth is 0
Sent Rcvd
Opens: 1 1
Notifications: 0 0
Updates: 0 4747
Keepalives: 233 2
Route Refresh: 0 0
Total: 4499 4750
Default minimum time between advertisement runs is 30 seconds
For address family: BGP IPv4
BGP table version 1, neighbor version 0/0
Output queue size : 0
Index 1, Offset 0, Mask 0x2
1 update-group member
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 0 0
Prefixes Total: 0 0
Implicit Withdraw: 0 0
Explicit Withdraw: 0 0
Used as bestpath: n/a 0
Used as multipath: n/a 0
Outbound Inbound
Local Policy Denied Prefixes: -------- -------
Total: 0 0
Number of NLRIs in the update sent: max 0, min 0
For address family: BGP IPv6
BGP table version 5377, neighbor version 5377/0
Output queue size : 0
Index 1, Offset 0, Mask 0x2
1 update-group member
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 4186 4184 (Consumes 301248 bytes)
Prefixes Total: 5247 5720
Implicit Withdraw: 929 1402
Explicit Withdraw: 132 134
Used as bestpath: n/a 4184
Used as multipath: n/a 0
Outbound Inbound
Local Policy Denied Prefixes: -------- -------
Suppressed duplicate: 0 729
AS_PATH loop: n/a 1
Total: 0 730
Number of NLRIs in the update sent: max 0, min 0
Connections established 1; dropped 0
Last reset never
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled
Local host: 2001:470:13:85::2, Local port: 179
Foreign host: 2001:470:13:85::1, Foreign port: 27652
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0xD430D0):
Timer Starts Wakeups Next
Retrans 781 1 0x0
TimeWait 0 0 0x0
AckHold 548 31 0x0
SendWnd 0 0 0x0
KeepAlive 1 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0
iss: 2096359627 snduna: 2096676254 sndnxt: 2096676254 sndwnd: 15991
irs: 3491247889 rcvnxt: 3491655495 rcvwnd: 15360 delrcvwnd: 1024
SRTT: 300 ms, RTTO: 303 ms, RTV: 3 ms, KRTT: 0 ms
minRTT: 20 ms, maxRTT: 300 ms, ACK hold: 200 ms
Flags: passive open, nagle, gen tcbs
IP Precedence value : 6
Datagrams (max data segment is 1420 bytes):
Rcvd: 1605 (out of order: 2), with data: 781, total data bytes: 407605
Sent: 1364 (retransmit: 1, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 1364, total data bytes: 371194
BGP neighbor is 2001:470:13:A5::1, remote AS 6939, external link
BGP version 4, remote router ID 72.52.92.142
BGP state = Established, up for 00:33:15
Last read 00:01:06, hold time is 180, keepalive interval is 60 seconds
āāāā Configured hold time is 180,keepalive interval is 60 seconds Minimum holdtime from neighbor is 0 secondsāāāā
Neighbor capabilities:
Route refresh: advertised and received(old & new)
Address family BGP IPv4: advertised
Address family BGP IPv6: advertised and received
Message statistics:
InQ depth is 0
OutQ depth is 0
Sent Rcvd
Opens: 3 3
Notifications: 2 0
Updates: 0 11046
Keepalives: 225 6
Route Refresh: 0 0
Total: 10794 11055
Default minimum time between advertisement runs is 30 seconds
For address family: BGP IPv4
BGP table version 1, neighbor version 0/0
Output queue size : 0
Index 1, Offset 0, Mask 0x2
1 update-group member
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 0 0
Prefixes Total: 0 0
Implicit Withdraw: 0 0
Explicit Withdraw: 0 0
Used as bestpath: n/a 0
Used as multipath: n/a 0
Outbound Inbound
Local Policy Denied Prefixes: -------- -------
Total: 0 0
Number of NLRIs in the update sent: max 0, min 0
For address family: BGP IPv6
BGP table version 5377, neighbor version 5377/0
Output queue size : 0
Index 1, Offset 0, Mask 0x2
1 update-group member
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 4186 4185 (Consumes 301320 bytes)
Prefixes Total: 4340 4383
Implicit Withdraw: 4312 177
Explicit Withdraw: 22 21
Used as bestpath: n/a 1
Used as multipath: n/a 0
Outbound Inbound
Local Policy Denied Prefixes: -------- -------
Suppressed duplicate: 0 88
AS_PATH loop: n/a 1
Total: 0 89
Number of NLRIs in the update sent: max 0, min 0
Connections established 3; dropped 2
Last reset 00:36:32, due to BGP Notification sent, hold time expired
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled
Local host: 2001:470:13:A5::2, Local port: 179
Foreign host: 2001:470:13:A5::1, Foreign port: 35382
Enqueued packets for retransmit: 2, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0xD434F4):
Timer Starts Wakeups Next
Retrans 255 8 0xD43A78
TimeWait 0 0 0x0
AckHold 198 36 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0
iss: 2143457352 snduna: 2143751576 sndnxt: 2143751935 sndwnd: 16331
irs: 3803321236 rcvnxt: 3803616454 rcvwnd: 15909 delrcvwnd: 475
SRTT: 300 ms, RTTO: 303 ms, RTV: 3 ms, KRTT: 9696 ms
minRTT: 60 ms, maxRTT: 300 ms, ACK hold: 200 ms
Flags: passive open, nagle, gen tcbs
IP Precedence value : 6
Datagrams (max data segment is 1420 bytes):
Rcvd: 687 (out of order: 0), with data: 392, total data bytes: 295217
Sent: 662 (retransmit: 8, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 662, total data bytes: 321070
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