OSPF priority

[nitinnigam]

Hi,

Soon I will be using OSPF as routing protocol. We have configured Fastethernet sub-interfaces and using HSRP between the two routers. In serial interface I have defined the priority to make DR and BDR, so just wanted to know do I have to assign the priority for all the FastEthernet sub-interfaces so I can control which router becomes DR and BDR for particular segment or is there any other way to increase the priority of all the Fastethernet interfaces.

Thanks

[thisisshanky]

The priority is an interface based command, so you will need to specify the priority on each sub interface.

I have not tested the possibility of specifying the priority command on your main FE interface, so that all sub interfaces will inherit the same priority value.

[ruwhite]

Why are you concerned about which router is dr and bdr in this situation? The priority will only help with initial convergence, so you might not end up with the "right" router dr and bdr anyway, even when setting the priority. A higher priority router will not "bump" a lower priority router from being dr when it comes on the link.

Russ.W