[j-nsp] OSPF log messages

Mon Aug 16 14:11:36 EDT 2004

Timer (Hello/Dead) mismatches?

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Robert Walton
Sent: Monday, August 16, 2004 11:27 AM
To: juniper-nsp at puck.nether.net
Subject: RE: [j-nsp] OSPF log messages

Hi,

	I'm seeing Hello packets being exchanged no problem however the
when i trace the database-description packets i see the following
continuously in the logs.

Aug 16 17:20:53 OSPF resend last DBD to 217.27.24.34
Aug 16 17:20:53 OSPF resend last DBD to 217.27.24.44
Aug 16 17:20:53 OSPF sent DbD 217.27.24.45 -> 217.27.24.34
(fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:53   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:53   checksum 0x0, authtype 0
Aug 16 17:20:53   options 0x42, i 1, m 1, ms 1, seq 0x926fe06b, mtu 1500
Aug 16 17:20:53 OSPF sent DbD 217.27.24.45 -> 217.27.24.44
(fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:53   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:53   checksum 0x0, authtype 0
Aug 16 17:20:53   options 0x42, i 1, m 1, ms 1, seq 0x926ea536, mtu 1500
Aug 16 17:20:58 OSPF resend last DBD to 217.27.24.34
Aug 16 17:20:58 OSPF sent DbD 217.27.24.45 -> 217.27.24.34
(fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:58   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:58   checksum 0x0, authtype 0
Aug 16 17:20:58   options 0x42, i 1, m 1, ms 1, seq 0x926fe06b, mtu 1500
Aug 16 17:20:58 OSPF resend last DBD to 217.27.24.44
Aug 16 17:20:58 OSPF sent DbD 217.27.24.45 -> 217.27.24.44
(fe-0/3/1.212, IFL 0x56)
Aug 16 17:20:58   Version 2, length 32, ID 146.101.129.217, area 0.0.0.0
Aug 16 17:20:58   checksum 0x0, authtype 0
Aug 16 17:20:58   options 0x42, i 1, m 1, ms 1, seq 0x926ea536, mtu 1500
Aug 16 17:21:01 OSPF resend last DBD to 217.27.24.34

I've checked the MTU at both ends and they are fine so there shouldn't
be a problem of one neighbor sending DBD's larger than the MTU... I've
also performed large pings to all adjacencies.

waltonro at FFALCR002A> ping 217.27.24.34 size 10000
PING 217.27.24.34 (217.27.24.34): 10000 data bytes
10008 bytes from 217.27.24.34: icmp_seq=0 ttl=255 time=29.623 ms 10008
bytes from 217.27.24.34: icmp_seq=1 ttl=255 time=17.913 ms 10008 bytes
from 217.27.24.34: icmp_seq=2 ttl=255 time=17.699 ms 10008 bytes from
217.27.24.34: icmp_seq=3 ttl=255 time=17.733 ms 10008 bytes from
217.27.24.34: icmp_seq=4 ttl=255 time=18.050 ms 10008 bytes from
217.27.24.34: icmp_seq=5 ttl=255 time=27.562 ms 10008 bytes from
217.27.24.34: icmp_seq=6 ttl=255 time=17.812 ms ^C
--- 217.27.24.34 ping statistics ---
8 packets transmitted, 7 packets received, 12% packet loss round-trip
min/avg/max/stddev = 17.699/20.913/29.623/4.889 ms

waltonro at FFALCR002A> ping 217.27.24.44 size 10000
PING 217.27.24.44 (217.27.24.44): 10000 data bytes
10008 bytes from 217.27.24.44: icmp_seq=0 ttl=255 time=19.937 ms 10008
bytes from 217.27.24.44: icmp_seq=1 ttl=255 time=17.728 ms 10008 bytes
from 217.27.24.44: icmp_seq=2 ttl=255 time=17.455 ms 10008 bytes from
217.27.24.44: icmp_seq=3 ttl=255 time=17.621 ms ^C
--- 217.27.24.44 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss round-trip
min/avg/max/stddev = 17.455/18.185/19.937/1.016 ms

So there shouldn't be any layer-2 issues, can anyone point me in the
direction of where i can go from here??

cheers,
Rob

-----Original Message-----
From: Jody Holmes [mailto:skwire at skwire.net]
Sent: 16 August 2004 09:26
To: Robert Walton
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] OSPF log messages

*
Quoting "Robert Walton" <robert.walton at FFastFill.com>
@ (8/16/2004 2:18:35 AM):

> Quick question for you OSPf experts, what does the following log 
> message mean? [Time stamp] OSPF periodic xmit from w.x.y.z to 
> 224.0.0.5 (IFL 78)

That address is the AllOSPFRouters multicast address.  OSPF Hello
packets are sent out on this address.  The only time Hello packets are
unicast is on an NBMA segment.

-- 
Jody Holmes   [~]  |  "Have no fear of perfection --
skwire at skwire.net  |   you'll never reach it."  S. Dali

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