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

OSPF Area Summarization

Hi all,

Quite possibly a stupid question, so apologies in advance!

My routing tables are quite large and I'm looking to simply summarize them with a statement such as:

area 1 range 10.21.0.0 255.255.0.0

All I want to get clarity on is; will this affect any traffic if I summarize?  I have a lot of established tunnels and data going in all directions and getting downtime is next to impossible as the argument will be "If it isn't broke, why fix it?"  I'm just going on the principle of keeping my routing tables small and tidy.

 

Thanks,

Dan

Everyone's tags (1)
2 REPLIES
New Member

No this should not cause any

No this should not cause any problems, I would be careful using such a broad summarisation unless you actually have all of those routes. You may also want to investigate OSPF stub areas depending on your network design Hopefully this helps
Silver

Hello _dansmith_ Instead of :

Hello _dansmith_

 

Instead of : If it isn't broke, why fix it?"    ->  "If it works, can it be improved"  ; )

 

Agreed with whiteside 998, make sure you know which subnets you are summarizing rather than just doing a B clasful summarization, this way you will have more granular control depending on your network design.

324
Views
0
Helpful
2
Replies
CreatePlease login to create content