"Stuck in ExStart" usually indicates a mismatch MTU problem.
-----Original Message-----
From: thomas cp lee [mailto:lee@fr.clara.net]
Sent: Friday, March 08, 2002 7:00 AM
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] OSPF ExStart problems between Zebra and Juniper Routers
Howdy Folks,
I m trying to make OSPF work between a Zebra FreeBSD router and an M10
Juniper, without success.
The drama takes place on a LAN, where I have a Cisco 7200 besides the Zebra
and the Cisco.
Everything seems fine between the Cisco and the Juniper on the one hand, and
between the Cisco and the Zebra on the other hand.
However, the Zebra and Juniper routers are stuck in the "ExStart" phase.
Has anyone managed to make Juniper/Zebra interoperate? Do you have any idea
what could be wrong ?
The best I could find that is looking similar to my problem is:
http://www.cisco.com/warp/public/104/12.html
but the Juniper and the Zebra both report a 1500 bytes MTU on the interface,
so it must be something else.
Cheers,
Tom (and Arnaud)
These are the IPs (changed) :
- Cisco loopback : 10.0.0.1
- Juniper loopback : 10.0.0.2
- Zebra loopback : 10.0.0.3
- Cisco LAN : 192.168.0.1
- Juniper LAN : 192.168.0.2
- Zebra LAN : 192.168.0.3
* Zebra "sh ip ospf neighbor"
Neighbor ID Pri State Dead Time Address
Interface RXmtL RqstL DBsmL
10.0.0.1 10 Full/Backup 00:00:38 192.168.0.1
fxp0:192.168.0.3 0 0 0
10.0.0.2 128 ExStart/DR 00:00:34 192.168.0.2
fxp0:192.168.0.3 0 0
* Juniper "show ospf neighbor"
Address Interface State ID Pri
Dead
192.168.0.1 fe-0/3/0.0 Full 10.0.0.1 130 38
192.168.0.3 fe-0/3/0.0 ExStart 10.0.0.3 0 39
* Juniper log
Mar 8 13:32:19 OSPF packet ignored: authentication failure (bad cksum).
Mar 8 13:32:19 OSPF packet ignored: authentication failure from
192.168.0.3
Mar 8 13:32:19 OSPF rcvd DbD 192.168.0.3 -> 192.168.0.2 (fe-0/3/0.0)
Mar 8 13:32:19 Version 2, length 32, ID 10.0.0.3, area 0.0.0.0
Mar 8 13:32:19 checksum 0x0, authtype 2
Mar 8 13:32:19 options 0x2, i 1, m 1, ms 1, seq 0x3c88956a, mtu 1500
Mar 8 13:32:19 OSPF packet ignored: no matching interface from
192.168.0.3
* Zebra log (debug hello,NSM)
2002/03/08 13:36:10 OSPF: make_hello: options: 2, int: fxp0:192.168.0.3
2002/03/08 13:36:10 OSPF: Hello sent to [224.0.0.5] via
[fxp0:192.168.0.3].
2002/03/08 13:36:12 OSPF: couldn't find any VL to associate the packet
with
2002/03/08 13:36:12 OSPF: Packet[DD]: Negotiation fails, packet
discarded.
2002/03/08 13:36:14 OSPF: NSM[fxp0:192.168.0.3:192.168.0.2]: Timer (DD
Retransmit timer expire)
2002/03/08 13:36:16 OSPF: couldn't find any VL to associate the packet
with
2002/03/08 13:36:16 OSPF: Packet[DD]: Negotiation fails, packet
discarded.
2002/03/08 13:36:16 OSPF: Hello received from [10.0.0.2] via
[fxp0:192.168.0.3]
2002/03/08 13:36:16 OSPF: src [192.168.0.2],
2002/03/08 13:36:16 OSPF: dst [224.0.0.5]
2002/03/08 13:36:16 OSPF: interface fxp0:192.168.0.3: ospf_read md5
authentication failed.
2002/03/08 13:36:18 OSPF: Hello received from [10.0.0.1] via
[fxp0:192.168.0.3]
n1
2002/03/08 13:36:18 OSPF: src [192.168.0.1],
2002/03/08 13:36:18 OSPF: dst [224.0.0.5]
2002/03/08 13:36:18 OSPF: Packet 10.0.0.1 [Hello:RECV]: Options
*|*|-|-|-|-|E|*
2002/03/08 13:36:18 OSPF: NSM[fxp0:192.168.0.3:10.0.0.1]: Full
(HelloReceived)
2002/03/08 13:36:18 OSPF: NSM[fxp0:192.168.0.3:10.0.0.1]: nsm_ignore
called
2002/03/08 13:36:18 OSPF: NSM[fxp0:192.168.0.3:10.0.0.1]: Full
(2-WayReceived)
* Zebra OSPF interface configuration
interface fxp0
ip ospf message-digest-key 1 md5 xxx
ip ospf priority 0
* Zebra OSPF configuration
router ospf
ospf router-id 10.0.0.3
network 10.0.0.3/32 area 0
network 192.168.0.0/24 area 0
area 0 authentication message-digest
* Juniper OSPF interface configuration
interface fe-0/3/0.0 {
authentication-key "encrypted key" key-id 1;
}
-- Thomas CP Lee Systemes/Reseaux fr.clara.net
This archive was generated by hypermail 2b29 : Mon Aug 05 2002 - 10:42:39 EDT