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

full BGP on a 2821 - any concern?

i'm adding a 2nd ISP and will use BGP. i'm told this model can handle it. If so would 512M of memory be adequate or is more necessary?

1 REPLY

Re: full BGP on a 2821 - any concern?

Currently the bgp prefixes are somewhere beteween 200k and 250k. According to this link approx, 100k prefixes occupy 70-80 MB of memory.

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

Following a linear model, 2.5 times increase in number of prefixes should ask for 200MB of memory just for storing prefixes.

I believe you should be fine with the 512 MB. 768 or 1gig will be plenty.

PS: Please rate the post if it helped you!

119
Views
5
Helpful
1
Replies
CreatePlease to create content