[31953] in North American Network Operators' Group
Re: RADWare Linkproof? (or better ways to multihome)
daemon@ATHENA.MIT.EDU (Jon Mansey)
Wed Nov 1 17:26:25 2000
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Date: Wed, 1 Nov 2000 14:24:32 -0800
To: nanog@merit.edu
From: Jon Mansey <jon@interpacket.net>
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When Cisco quote the capabilities of a router, they always,
understandably, consider the maximum potential bandwidth of an
interface. Therefore a 100bT FDX interface takes up 200Mbps of
backplane bandwidth. This of course limits the capacity of even a
7200 VXR to about 4 interfaces max.
If you never intend to run your 100bT at anything like the max bit
rate, you will probably be OK loading up your router with more than
the approved number of interfaces, but you do so at your own risk
obviously.
jm
>Larry Rosenman [ler@lerctr.org] wrote:
>
>> For the record, I've got a customer taking 2 full BGP tables with a
>> 3640 with 128Meg of RAM.
>
>Can anything less than a 7200 handle three (preferably four) fast
>ethernet interfaces? That was my sole reason for going that route
>as it seems to be the smallest Cisco that will provide four fast-E
>connections (according to Cisco docs that I may have misread).
>
>> (not sure of cost...)
>
>Well, it's certainly cheaper than a 7206...
>
>Thanks,
>Mike
>--
>Mike Johnson
>Network Engineer / iSun Networks, Inc.
>Morrisville, NC
>All opinions are mine, not those of my employer
