zebra/ospf issue

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1

Folks,

I'm experimenting with using Zebra running on a Debian box to do OSPF with
the Ciscos on our network. The zebra box has 2 interfaces, each in a
different area. This is the first time we have tried to impliment
multiple areas on our network. Right now, area 51 consists only of the
zebra box and a Cisco 2500, and is just for testing.

The zebra box is forming a full adjacency with the Cisco in area 51 with
no problems. It will not, however, become fully adjacent with the DR and
BDR in area 0. This seems to be preventing the distrobution of routes to
the zebra box.

Distrobution of routes in area 51 works fine.

Here is my config, minus auth info.

! Zebra configuration saved from vty
! 2002/02/02 16:35:11
!
hostname ospfd
log file /var/log/zebra/ospfd.log
service password-encryption
!
!
interface lo
!
interface eth1
ip ospf authentication-key <password>
!
interface eth0
ip ospf message-digest-key <keyid> md5 <password>
ip ospf priority 5
ip ospf hello-interval 10
ip ospf dead-interval 40

!
router ospf
ospf router-id 216.184.8.55
ospf abr-type cisco
ospf rfc1583compatibility
network 198.59.115.0/24 area 0
network 216.184.8.0/24 area 51
area 0 authentication message-digest
area 51 authentication
redistribute static

Any insight would be appreciated. Thanks.

Josh
jgentry@systemstability.org

2

Have you tried it without the message-digest? I messed with this back in the
day and I had problems with the keys and the way they're hashed.

3

I think this is normal behavior (without really analyzing things...).
See if this helps any: http://www.cisco.com/warp/customer/104/11.html

Mark Radabaugh

4

It is normal for it to be in 2-way adjacency with with all the routers in
area 0 _except_ the DR and BDR. Indeed, my Zebra forms a 2-way adjacency
with all the routers in area 0, except DR and BDR, but it never even makes
it to 2-way adjacency with the DR and BDR, let alone the full adjacency
needed for the Zebra box to receive and inject routes into the OSPF
routing table.

Thanks for the link. Good info, even though not the answer to this
problem.

Thanks,

Josh
jgentry@swcp.com

5

Folks,

I'm experimenting with using Zebra running on a Debian box to do OSPF with
the Ciscos on our network. The zebra box has 2 interfaces, each in a
different area. This is the first time we have tried to impliment
multiple areas on our network. Right now, area 51 consists only of the
zebra box and a Cisco 2500, and is just for testing.

The zebra box is forming a full adjacency with the Cisco in area 51 with
no problems. It will not, however, become fully adjacent with the DR and
BDR in area 0. This seems to be preventing the distrobution of routes to
the zebra box.

The adjacency problem is fixed. We were hoping to use the Debian package
for Zebra, since the Debian package management is so nice, but the
packages are often old. Eventually we built the newest Zebra from source
and the adjacency problem just went away.

Next question. Routes from area 0 are being learned in area 51, but
static routes added in area 51 are not being learned in area 0. I am
using all the redistribute commands I can find.

6

This is apparently not an appropriate topic for the nanog list. You will
see no more. Thank you.

Josh