From: Vincent Mashburn (vmashburn@fedex.com)
Date: Fri Nov 24 2006 - 11:46:52 ART
I ran into this same problem. This happens only if you don't set the
proper OSPF network type on the interface before enabling the OSPF
process. In order to fix it, do a "no router ospf 1" and then "router
ospf 1" and paste your config back in. It should work.
Vince Mashburn
Sr. Voice / Data Engineer
901-263-5072
CCVP, CCNP
Cisco IP Telephony Support Specialist
Cisco IP Telephony Operations Specialist
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
haducbinh
Sent: Thursday, November 23, 2006 10:17 PM
To: ccielab@groupstudy.com
Subject: OSPF bug
Hi GS!
I'm using IOS Version 12.4(9)T1! I try to config OSPF neighbor between
R5
and FRS on non-broadcast network but can not!
R5#sh run | begin router os
router ospf 1
router-id 172.16.105.1
log-adjacency-changes
area 10 nssa
redistribute rip subnets
network 172.16.35.5 0.0.0.0 area 0
network 172.16.50.5 0.0.0.0 area 10
network 172.16.105.1 0.0.0.0 area 105
this is Fas0/0 connect to FRS (172.16.50.20):
R5(config-router)#do sh run int fas0/0
interface FastEthernet0/0
ip address 172.16.50.5 255.255.255.0
ip ospf network non-broadcast
duplex auto
speed auto
end
and result:
R5(config-router)#neighbor 172.16.50.20
OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
networks
R5(config-router)#do sh ip os int fas0/0
FastEthernet0/0 is up, line protocol is up
Internet Address 172.16.50.5/24, Area 10
Process ID 1, Router ID 172.16.105.1, Network Type NON_BROADCAST,
Cost: 1
Transmit Delay is 1 sec, State DR, Priority 1
As you can see, network type is NON_BROADCAST but I can not enter
neighbor
command on R5!
Then, I try to enter neighbor command on FRS, strange thing happen!
FRS use IOS Version 12.2(15)T14
The first: check ospf configuration:
FRS#sh run | begin router os
router ospf 1
router-id 7.7.3.1
log-adjacency-changes
area 10 nssa
redistribute connected subnets
network 7.7.2.1 0.0.0.0 area 10
network 7.7.3.1 0.0.0.0 area 10
network 172.16.50.20 0.0.0.0 area 10
The second, type neighbor command on FRS, it's ok!
FRS(config-router)#neighbor 172.16.50.5
And then, check OSPF configuration again, the neighbor command
disappear??
It can create neighbor with R5, but when I reload all, I can not create
neighbor!
FRS(config-router)#do sh run | be router os
router ospf 1
router-id 7.7.3.1
log-adjacency-changes
area 10 nssa
redistribute connected subnets
network 7.7.2.1 0.0.0.0 area 10
network 7.7.3.1 0.0.0.0 area 10
network 172.16.50.20 0.0.0.0 area 10
Is this a bug of IOS or I did something wrong?
Thanks!
HaDucBinh
Mail: <mailto:haducbinh@vnpro.org> haducbinh@vnpro.org or
haducbinh@gmail.com
Phone: +84 908 191 322
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