the memory stats in the "sh ip bgp summ" are a little misleading. Try a
"show proc mem | inc BGP":
PID TTY Allocated Freed Holding Getbufs Retbufs Process
74 0 631172512 4098051860 31705348 0 0 BGP Router
75 0 343694804 15643832 15828 4041196 19808064 BGP I/O
76 0 0 1086676808 6796 0 0 BGP Scanner
with a full table you can see that there is around 32MB of RAM used for
around 100k routes. Thing to watch is whether you are using soft-reconfig,
cef, or other RAM-intensive stuff. Personally would go for 128MB as a
minimum for a full routing table (am putting 256MB in my new high-end
boxes).
With 64MB you can probably get away with a full table if you're careful, but
it's not going to scale, or last for very much longer. You're probably
better off getting a default and local routes off each provider, unless you
*really* need a full table, in which case you should go for 128MB RAM.
Filtering routes inbound is all well and god, but you should really use
soft-reconfig so you can mess with you policies live, but this means that
the routes still fill up the table, even if they are not actually entered
into the forwarding table.
hth
Andy
----- Original Message -----
From: "Anthony"
To:
Sent: Sunday, May 13, 2001 7:35 AM
Subject: BGP routes? [7:4305]
> I have two 2621's, each with 64MB of memory. I am setting up a BGP
> multihoming config with two ISP's. Anyone know approximately how many
> routes I can accept with that much memory?
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