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

Hardware sizing to implement OSPF

Hi, I have a Cisco router 7206 with a NPE300 module with 128M of memory and a Catalyst 6509 with a MSFC2 module with 128M of memory. Is it enough to implement OSPF contend two areas, (0 and 1), with authentication between them and making routing of 1000 different sub-nets?

Tks

3 REPLIES
Purple

Re: Hardware sizing to implement OSPF

It may or may not be enough, depending on the number of OSPF adjacencies, the stability of your network and what other things you are running.

So how many adjacencies are you expecting to have on these routers ?

Paresh

New Member

Re: Hardware sizing to implement OSPF

Probably 30 adjacenties routers.

Purple

Re: Hardware sizing to implement OSPF

From experience, the NPE-300 is capable of handling that many adjacencies and the number of routes is also not an issue.

However, it is extremely difficult to say that you will be absolutely okay without having an understanding of the particulars of your setup. Your best option is to try and simulate this up in a lab to get a feel for what the impact on the CPU is.

One of the major causes of CPU usage with OSPF is the SPF algorithm. If your network is relatively stable, SPF will not run that often and the overall impact of OSPF will be low. If that is not the case, the CPU will be hit harder.

Hope that helps - pls rate the post if it does.

Paresh

123
Views
0
Helpful
3
Replies
CreatePlease login to create content