Disappearing Default Route in OSPF
Posted: Tue Aug 09, 2011 3:35 am
Hi,
I've got three RB411AH devices, all of them running 5.6. One is an AP, the other two are wireless clients. They are doing WDS bridging. For administrative purposes, they all belong to a /29 network. They are each running OSPF and the /29 network and the wds (on the AP) and wlan (on the clients) interfaces (well actually the bridge interfaces) are configured as part of a NSSA area. The AP has a default route, and the AP's OSPF instance is configured to distribute the default route, if it is up, as a type-1 LSA into OSPF.
Things work great, for 10 to 20 minutes. The default route in question shows up everywhere it should. Then suddenly the two client devices vanish from the management net. Not really--but the OSPF default route disappears from the two clients' routing tables, even though it still exists and is active on the AP. And when I do /routing ospf route print on the AP, the default route appears there normally too. But when I do either /ip route print or /router ospf route print on either of the clients, there is no default route.
If I login to the AP and make an OSPF change, for example if I set the LSA type for the default from type 1 to type 2, then log out, the default route magically reappears on the two clients as a type 2 LSA for about 10 to 20 minutes, then vanishes.
Any ideas?
Wondering,
Aaron out.
From one of the clients (their configurations are identical except the router ID):
And the AP:
I've got three RB411AH devices, all of them running 5.6. One is an AP, the other two are wireless clients. They are doing WDS bridging. For administrative purposes, they all belong to a /29 network. They are each running OSPF and the /29 network and the wds (on the AP) and wlan (on the clients) interfaces (well actually the bridge interfaces) are configured as part of a NSSA area. The AP has a default route, and the AP's OSPF instance is configured to distribute the default route, if it is up, as a type-1 LSA into OSPF.
Things work great, for 10 to 20 minutes. The default route in question shows up everywhere it should. Then suddenly the two client devices vanish from the management net. Not really--but the OSPF default route disappears from the two clients' routing tables, even though it still exists and is active on the AP. And when I do /routing ospf route print on the AP, the default route appears there normally too. But when I do either /ip route print or /router ospf route print on either of the clients, there is no default route.
If I login to the AP and make an OSPF change, for example if I set the LSA type for the default from type 1 to type 2, then log out, the default route magically reappears on the two clients as a type 2 LSA for about 10 to 20 minutes, then vanishes.
Any ideas?
Wondering,
Aaron out.
From one of the clients (their configurations are identical except the router ID):
Code: Select all
# aug/08/2011 18:20:39 by RouterOS 5.6
# software id = 6GCP-ATT8
#
/routing ospf instance
set default disabled=no distribute-default=never in-filter=ospf-in metric-bgp=auto metric-connected=20 \
metric-default=1 metric-other-ospf=auto metric-rip=20 metric-static=20 name=default out-filter=ospf-out \
redistribute-bgp=no redistribute-connected=as-type-1 redistribute-other-ospf=no redistribute-rip=no \
redistribute-static=no router-id=10.0.0.3
/routing ospf area
set backbone area-id=0.0.0.0 disabled=no instance=default name=backbone type=default
add area-id=1.0.0.1 default-cost=1 disabled=no inject-summary-lsas=yes instance=default name=mynssa \
translator-role=translate-candidate type=nssa
/routing ospf interface
add authentication=md5 authentication-key=supercoolpwdhere authentication-key-id=1 cost=10 dead-interval=10s \
disabled=no hello-interval=2s instance-id=0 interface=bridge1 network-type=ptmp passive=no priority=1 \
retransmit-interval=5s transmit-delay=1s use-bfd=no
/routing ospf network
add area=mynssa disabled=no network=10.0.0.0/29
Code: Select all
# aug/08/2011 18:23:28 by RouterOS 5.6
# software id = 2VIB-Z889
#
/routing ospf instance
set default disabled=no distribute-default=if-installed-as-type-1 in-filter=ospf-in metric-bgp=auto metric-connected=\
20 metric-default=1 metric-other-ospf=auto metric-rip=20 metric-static=20 name=default out-filter=ospf-out \
redistribute-bgp=no redistribute-connected=as-type-1 redistribute-other-ospf=no redistribute-rip=no \
redistribute-static=as-type-1 router-id=1.0.0.1
/routing ospf area
set backbone area-id=0.0.0.0 disabled=no instance=default name=backbone type=default
add area-id=1.0.0.1 default-cost=1 disabled=no inject-summary-lsas=yes instance=default name=mynssa \
translator-role=translate-candidate type=nssa
/routing ospf interface
add authentication=md5 authentication-key=supercoolpwdhere authentication-key-id=1 cost=10 dead-interval=10s \
disabled=no hello-interval=2s instance-id=0 interface=bridge1 network-type=ptmp passive=no priority=1 \
retransmit-interval=5s transmit-delay=1s use-bfd=no
/routing ospf network
add area=mynssa disabled=no network=1.0.0.0/29
