Re: (PM) Which router to use for BGP-4?

Jordyn A. Buchanan (jordyn@bestweb.net)
Fri, 3 Jul 1998 16:35:20 -0400

At 12:27 PM -0700 7/3/98, Tom wrote:
>On Fri, 3 Jul 1998, Scott Drassinower wrote:
>
>> If he is going to receive full routes from his upstream ISP, 16mb is not
>> going to cut it at all. 64mb really is necessary, more than that is
>> optimal. I doubt that customer-only routes from a UUNet or MCI will even
>> be happy with 16.
>
> For Livingston routers, 16MB is enough.

True.

> For Cisco routers, 64MB is required to get started, and you should be
>prepared to add more if necessary.

False...

gw2.white-plains#sh ip bgp sum
BGP table version is 14463964, main routing table version 14463964
50676 network entries (85903/101352 paths) using 9168236 bytes of memory
10287 BGP path attribute entries using 1234744 bytes of memory
6540 BGP route-map cache entries using 104640 bytes of memory
3348 BGP filter-list cache entries using 53568 bytes of memory

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State
137.39.2.144 4 701 4879016 80627 14463921 0 0 2d04
209.94.127.42 4 8120 7272796 2400124 14463964 0 0 2w3d
gw2.white-plains#sh ver
Cisco Internetwork Operating System Software
IOS (tm) 4500 Software (C4500-I-M), Version 11.0(5), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-1996 by cisco Systems, Inc.
Compiled Mon 05-Feb-96 22:35 by hochan
Image text-base: 0x600087E0, data-base: 0x603A0000

ROM: System Bootstrap, Version 5.2(4) [kmac 4], RELEASE SOFTWARE (fc1)

gw2.white-plains uptime is 8 weeks, 2 hours, 1 minute
System restarted by power-on
Running default software

cisco 4500 (R4K) processor (revision 0x02) with 32768K/4096K bytes of memory.

I don't think you can cram more than one view into 32 megs under 11.2, and
maybe not even one these days. Admittedly, there's not a lot of memory to
spare in the above configuration, but it works.

Sidenote: UUNet's customer routes *do* fit into 16 megs of RAM, even under
11.2. Dunno about MCI, but I would expect you could handle just their
customer routes in 16 megs too...

Jordyn

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