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Beginner

OSPF neighborships between L3 switch, router, and ASA: ASA not becoming the BDR

I have a Cisco 3750G layer 3 switch, a Cisco 2951 router, and a Cisco ASA 5510. They are all running the same OSPF process and connected to the same Ethernet segment.

 

I set priority 253 on the router, 254 on the ASA, and 255 on the layer 3 switch, but it looks like the ASA is not becoming the BDR as I want. The ASA is a DROTHER, the switch is the DR (correct), and the router is the BDR (not correct).

 

ROUTER#sh ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface
172.19.0.2 255 FULL/DR 00:00:35 172.18.0.2 Port-channel1.180
172.19.0.8 254 FULL/DROTHER 00:00:34 172.18.0.8 Port-channel1.180
ROUTER#

 

ASA# sh ospf neighbor


Neighbor ID Pri State Dead Time Address Interface
172.19.0.2 255 FULL/DR 0:00:31 172.18.0.2 inside
172.19.0.1 253 FULL/BDR 0:00:30 172.18.0.1 inside
ASA#

 

SWITCH#sh ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface
172.19.0.1 253 FULL/BDR 00:00:33 172.18.0.1 Vlan180
172.19.0.8 254 FULL/DROTHER 00:00:36 172.18.0.8 Vlan180
SWITCH#

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VIP Advisor

Re: OSPF neighborships between L3 switch, router, and ASA: ASA not becoming the BDR

Hello

Clear all ospf processes, that should do the trick

clear ip ospf process *



kind regards
Paul

Please rate and mark posts accordingly if you have found any of the information provided useful.
It will hopefully assist others with similar issues in the future

View solution in original post

3 REPLIES 3
VIP Advisor

Re: OSPF neighborships between L3 switch, router, and ASA: ASA not becoming the BDR

Hello

Clear all ospf processes, that should do the trick

clear ip ospf process *



kind regards
Paul

Please rate and mark posts accordingly if you have found any of the information provided useful.
It will hopefully assist others with similar issues in the future

View solution in original post

Beginner

Re: OSPF neighborships between L3 switch, router, and ASA: ASA not becoming the BDR

Thanks, that worked! I'll know for my CCIE exam that changing priority won't preempt the current DR / BDR.

Highlighted
VIP Advisor

Re: OSPF neighborships between L3 switch, router, and ASA: ASA not becoming the BDR

Hello

Correct preempton isnt applicable in DR/BDR election



kind regards
Paul

Please rate and mark posts accordingly if you have found any of the information provided useful.
It will hopefully assist others with similar issues in the future
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