Depends on the size of the ISPs that you're connecting to, but I was able to
do the following with my 2621:
Take UUNET + Customer routes, and then take Sprint + 1 AS (not necessarily
Sprint + Customers) and I sit at 2.1mb free Processor RAM and 4.4mb free I/O
RAM. I check it weekly and we'll be replacing it with a 2651+128mb RAM soon
(but it never drops below 2mb Processor and 4mb I/O). Right now it looks
like:
ISC-Tur-2600-2#sh mem
Head Total(b) Used(b) Free(b) Lowest(b)
Largest(b)
Processor 80BEE0E4 48307996 46169572 2138424 2001744
1621648
I/O 3A00000 6291456 1816760 4474696 4362768
4474652
ISC-Tur-2600-2#sh ip bgp sum
BGP router identifier 63.107.123.244, local AS number 18506
BGP table version is 764596, main routing table version 764596
78760 network entries and 88043 paths using 10809268 bytes of memory
13337 BGP path attribute entries using 800220 bytes of memory
10812 BGP AS-PATH entries using 265108 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
2 BGP filter-list cache entries using 24 bytes of memory
BGP activity 2826921/4544350 prefixes, 4665044/4576998 paths, scan interval
15 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
63.107.123.250 4 18506 3372305 3089882 764596 0 0 6w2d 45237
157.130.196.245 4 701 1729948 64816 764596 0 0 5w6d 42803
The biggest thing I can say is filter your routes from your ISPs very
closely. The UUNET tech was cluelessly sending me full routes when I
requested UUNET-only routes when we started and crashing our 2621+64mb until
I started to filter UUNET+2AS (more than UUNET-only, but not enough to crash
the router before we turned on Sprint).
Sprint actually connects to a 3640+128mb which takes full routes and then
only forwards on Sprint+1AS to the 2621 (which also filters incoming).
Just for reference, here is the 3640:
ISC-Mod-3640#sh mem
Head Total(b) Used(b) Free(b) Lowest(b)
Largest(b)
Processor 621E3220 78761440 59608548 19152892 17030276
17819908
I/O 6D00000 19922944 1897064 18025880 17925576
18019356
ISC-Mod-3640#sh ip bgp sum
BGP router identifier 63.172.195.48, local AS number 18506
BGP table version is 11757459, main routing table version 11757459
100240 network entries and 141392 paths using 14813392 bytes of memory
23604 BGP path attribute entries using 1417260 bytes of memory
19771 BGP AS-PATH entries using 504240 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
12714 BGP filter-list cache entries using 152568 bytes of memory
BGP activity 1258312/2982465 prefixes, 4091113/3949721 paths, scan interval
15 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
63.107.123.249 4 18506 3090184 3711050 11757459 0 0 6w2d 41229
144.232.206.65 4 1239 3097325 64905 11757402 0 0 6w2d 100156
--
Jason Roysdon, CCNP+Security/CCDP, MCSE, CNA, Network+, A+
List email: [EMAIL PROTECTED]
Homepage: http://jason.artoo.net/
""Anthony"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> 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?
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=4370&t=4305
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