OSPF compatibilty with Cisco

RouterOS General
1

I have my MikroTik RB-3C2 router connected to a Cisco router running OSPF. After rebooting the Cisco router the 2 routers exchange routes just fine. After ~60 seconds the OSPF routes are dropped. Debug output on the Cisco console indicates the dead-timer expired. Enabling OSPF packet debug on the Cisco router shows 2 hello messages from the MikroTik router and then stop. 40 seconds later, dead-interval timer, the OSPF routes are flushed.

Looking at the system log files on the MikroTik router it shows hello messages sent and received???

Has anyone encountered this?

2

Do a search on the forum “ospf cisco” theres a few posts that may help ya out.

3

Didn’t see anything in existing Forum entries.

Following is the log output when the problem happens along with the OSPF configuration data.

In desperate need of help.

Log output from MikroTik:

apr/07/2005 08:13:40 Hello sent to 224.0.0.5 via eth0:10.0.0.1
apr/07/2005 08:13:40 Hello received from 1.0.0.1 via eth1:192.168.50.2
apr/07/2005 08:13:40 Hello from 1.0.0.1: options |-|-|-|-|-|E|
apr/07/2005 08:13:50 Hello sent to 224.0.0.5 via eth1:192.168.50.2
apr/07/2005 08:13:50 Hello sent to 224.0.0.5 via eth0:10.0.0.1
apr/07/2005 08:13:50 Hello received from 1.0.0.1 via eth1:192.168.50.2
apr/07/2005 08:13:50 Hello from 1.0.0.1: options |-|-|-|-|-|E|
apr/07/2005 08:14:00 Hello sent to 224.0.0.5 via eth1:192.168.50.2
apr/07/2005 08:14:00 Hello sent to 224.0.0.5 via eth0:10.0.0.1
apr/07/2005 08:14:00 Hello received from 1.0.0.1 via eth1:192.168.50.2
apr/07/2005 08:14:00 Hello from 1.0.0.1: options |-|-|-|-|-|E|

OSPF config info.
/ routing ospf
set router-id=0.0.0.0 distribute-default=never
redistribute-connected=as-type-1 redistribute-static=no
redistribute-rip=no redistribute-bgp=no metric-default=1
metric-connected=20 metric-static=20 metric-rip=20 metric-bgp=20
/ routing ospf area
set backbone area-id=0.0.0.0 authentication=none disabled=no
/ routing ospf interface
set FIXME interface=ether2 cost=1 priority=1 authentication-key=“”
retransmit-interval=5s transmit-delay=1s hello-interval=10s
dead-interval=40s
/ routing ospf network
add network=10.0.0.0/24 area=backbone disabled=no
add network=192.168.50.0/24 area=backbone disabled=no
/ routing bgp
set enabled=no as=1 router-id=0.0.0.0 redistribute-static=no
redistribute-connected=no redistribute-rip=no redistribute-ospf=no
/ routing rip
set redistribute-static=no redistribute-connected=no redistribute-ospf=no
redistribute-bgp=no metric-static=1 metric-connected=1 metric-ospf=1
metric-bgp=1 update-timer=30s timeout-timer=3m garbage-timer=2m
/ queue type
set default name=“default” kind=pfifo bfifo-limit=15000 pfifo-limit=50
red-limit=60 red-min-threshold=10 red-max-threshold=50 red-burst=20
sfq-perturb=5 sfq-allot=1514 pcq-rate=0 pcq-limit=50 pcq-classifier=“”
set ethernet-default name=“ethernet-default” kind=pfifo bfifo-limit=15000
pfifo-limit=50 red-limit=60 red-min-threshold=10 red-max-threshold=50
red-burst=20 sfq-perturb=5 sfq-allot=1514 pcq-rate=0 pcq-limit=50
pcq-classifier=“”
[admin@windwireless] >3