Tony;

One possible point could be;

I would assume that you would be using CEF, for the best forwarding
performance.  With that said, CEF maintains the FIB which can use a sizable
amount of memory.  Also, assuming that they are wanting to traffic engineer
the multiple OC-12's (even if they don't plan on it now, they will), they
will need to run MPLS (tag switching) on top of CEF, even more memory
demands.

Their possible comebacks could be that these are just core routers that will
be acting as BGP route reflectors, and so all they have to do is route
traffic based on the current BGP table.  If this is the case then they could
have tremendous performance gains by not running BGP in the core, and simply
let MPLS handle the switching.  This has a net result of simplifying the
configuration, improving performance, and reducing memory requirements.

HTH

______________________________

Thomas Crowe
Senior Systems Engineer / Architect
CTS Professional Services - Atlanta
Phone: 770-664-3900
Cell: 404-277-4089
______________________________

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Tony Medeiros
Sent: Monday, September 17, 2001 11:48 PM
To: [EMAIL PROTECTED]
Subject: Memory Need for GSR's [7:20233]


Hello everybody,
I have to spec. a few 12008's for a customer.  When I configured them, I
maxed
out the memory for the GRP and the line cards at 256 meg.  The customer
would
like to know why I am doing this as the memory for the puppy's is gawd awful
expensive.  The router will be doing BGP and has a lot of OC-12 interfaces.

Question:  Can any of you Provider gurus recommend the correct memory for
the
current BGP table.  Is 256 too much?  Is 128 going to be too small soon?

Thanks in advance and GOD BLESS AMERICA !!!!!
Tony M.
#6172

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