Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

question on DR

Hi Friends,

As everybody know the DR election process is like the highest router id will be the DR am i right?

Then what is the router id any body can give right info.

Regards,

Naidu.

5 REPLIES
Gold

Re: question on DR

http://www.cisco.com/warp/public/104/1.html#t21

"The router with the highest OSPF priority on a segment will become the DR for that segment. The same process is repeated for the BDR. In case of a tie, the router with the highest RID will win."

Re: question on DR

Naidu,

The default OSPF priority of an interface is '1'. Hence, if the priority wasn't changed on any of the router interfaces in the multi-access segment then the router with the highest RID would be elected DR for that segment. Just to let you know you can set the interface priority to '0' if you don't want a router to become a DR under any circumstance.

HTH

Sundar

New Member

Re: question on DR

Sundar,

As you told how i should proceed to change router int priority, what are the commands from starting can you give.

Regards,

Naidu.

New Member

Re: question on DR

Hello Naidu -

The highest IP address on the router will be the assigned router ID. With that being said. If the router have a loopback address assigned. Then the loopback address will be the router ID. If there are more than one loopback on the router,then the highest loopback address will be the Router's ID. You can also assign a RID under the OSPF process.

I hope I haven't confused you.

soray

New Member

Re: question on DR

Hi,

Thanks to both Sundar & Soray for their quick responce and good info on my conversation, it help out me.

REgards,

Naidu.

106
Views
8
Helpful
5
Replies