IMHO' In these modern times explicitly set ip mtu at all times. Will save a lot of trouble in the long run. I suggest this in view of PWE3, QinQ, etc.
- original message - Subject: Re: [j-nsp] Help with OSPF config From: "Scott Morris" <[EMAIL PROTECTED]> Date: 19/02/2008 15:15 Traceoptions will help on Juniper, or "debug ip ospf adjacency" on the Cisco side. If you have an authentication mismatch, I don't think you'll even see the start. If you get into the EXStart phase and then reset, I'd hover towards MTU mismatch between the two devices. You can either fix them, or on the device that has the lower mtu (likely the Cisco, but unsure of your config!) use "ip ospf mtu-ignore". If it's the Juniper side, you can't do anything AFAIK, other than adjusting MTU. HTH, Scott -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sean Clarke Sent: Tuesday, February 19, 2008 2:13 AM To: Matthew Crocker Cc: Juniper-NSP Mailing list Subject: Re: [j-nsp] Help with OSPF config Try turning on some traceoptions in OSPF on the Juniper ... it'll probably tell you what the problem is ... maybe a typo'ed md5 key, or an unexpected router-id ? cheers Matthew Crocker wrote: > I need some Juniper-Foo for my OSPF config. > > I have 3 routers connected to a GigE switch. > > Router A is a Cisco 12000 > Router B is a Juniper J6350 > Router C is a Redback SE-400 > > I have A&C talking OSPF and sharing routes just fine. > > I have A&B & C&B complaining about what the Juniper is sending out > and shutting it down. > > Router B config is > > # show protocols ospf > export export-statics; > area 0.0.0.0 { > authentication-type md5; > interface ge-0/0/0.0 { > authentication { > md5 1 key "$XXXXXXXXXXXXXXXXX"; ## SECRET-DATA > } > } > } > > Router A config is > interface GigabitEthernet4/1 > description Link to CORE-SW-A-Fe-0-1 > ip address 1.2.3.4 255.255.255.128 > no ip directed-broadcast > ip ospf authentication message-digest > ip ospf authentication-key 7 XXXXXXXXXXXXXXX > ip ospf message-digest-key 1 md5 7 XXXXXXXXXXXXX > no negotiation auto > > router ospf 1 > router-id 204.97.12.4 > log-adjacency-changes > nsf > area 0 authentication message-digest > redistribute connected subnets > redistribute static subnets > network 1.2.3.0 0.0.0.255 area 0 > > > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp