[quagga-users 10986] Ospf6 and ECMP Behaviour

Mehmet Akcin mehmet at akcin.net
Sat Aug 1 07:30:02 IST 2009


Hello,

I am currently running Quagga 0.99.14 on CentOS 5.3 and experiencing a
weird problem. I have 8 servers ecmp load balancing the total load,
and everything is working fine with ipv4 (in terms of load balancing
etc...) on ipv6 everything seems to be working fine but no ecmp load
balancing, simply just one route gets the all traffic, no interface
errors though.

Here is ospf6.conf

!
password z3bra
log file /var/log/quagga/ospf6d.log
!
debug ospf6 lsa unknown
!
interface eth0
 ipv6 ospf6 cost 1
 ipv6 ospf6 priority 0
!
interface lo
 ipv6 ospf6 cost 1
 ipv6 ospf6 priority 0
!
router ospf6
 router-id 69.44.23.11
 interface eth0 area 0.0.0.0
 interface lo area 0.0.0.0
!
line vty
!

I see this error msg in the logs a lot,

01)2009/08/01 06:21:02 OSPF6: Could not send entire message
2009/08/01 06:21:12 OSPF6: sendmsg failed: ifindex: 1: Network is unreachable (1
01)

and this one, happens once every few hours, and that causes ospf6d to die..

009/08/01 05:29:02 OSPF6: Could not send entire message
2009/08/01 05:29:04 OSPF6: Assertion `current == route' failed in file
ospf6_route.c, line 608, function ospf6_route_remove
2009/08/01 05:29:04 OSPF6: Backtrace for 9 stack frames:
2009/08/01 05:29:04 OSPF6: [bt 0]
/usr/lib/quagga/libzebra.so.0(zlog_backtrace+0x2a) [0x2a29da]
2009/08/01 05:29:04 OSPF6: [bt 1] /usr/lib/quagga/libzebra.so.0(_zlog_assert_fai
led+0x77) [0x2a2b67]
2009/08/01 05:29:04 OSPF6: [bt 2] /usr/sbin/ospf6d [0xf649bb]
2009/08/01 05:29:04 OSPF6: [bt 3]
/usr/sbin/ospf6d(ospf6_intra_route_calculation+0x10b) [0xf67c4b]
2009/08/01 05:29:04 OSPF6: [bt 4] /usr/sbin/ospf6d [0xf6c11a]
2009/08/01 05:29:04 OSPF6: [bt 5]
/usr/lib/quagga/libzebra.so.0(thread_call+0x3f) [0x2932af]
2009/08/01 05:29:04 OSPF6: [bt 6] /usr/sbin/ospf6d(main+0x3e5) [0xf4e175]
2009/08/01 05:29:04 OSPF6: [bt 7]
/lib/libc.so.6(__libc_start_main+0xdc) [0x413e8c]
2009/08/01 05:29:04 OSPF6: [bt 8] /usr/sbin/ospf6d [0xf4db71]

So.. any ideas what might be wrong? any input is welcome, thank you
for your time...

-- 
Mehmet Akcin
Blog: http:///akcin.net
E-mail: mehmet at akcin.net


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