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. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

BGP and memory resources

Hi,

I know that 1 Full BGP session use 70MB of memory.

I need to know How many memory a router to need for support 8 Full BGP sessions (123K prefix) ?

regards.

1 REPLY
Silver

Re: BGP and memory resources

The amount of memory required to store BGP routes depends on many factors, such as the router, the number of alternate paths available, route dampening, community, the number of maximum paths configured, BGP attributes, and VPN configurations. Without knowledge of these parameters it is difficult to calculate the amount of memory required to store a certain number of BGP routes. We typically recommend a minimum of 128 MB of RAM in the router to store a complete global BGP routing table from one BGP peer. However, it is important to understand ways to reduce memory consumption and achieve optimal routing without the need to receive the complete Internet routing table. The following document provides more detailed information:

http://www.cisco.com/warp/public/459/41.shtml

319
Views
0
Helpful
1
Replies