From: Chuck Church (cchurch@optonline.net)
Date: Tue Nov 12 2002 - 20:57:55 GMT-3
H,
According to:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_configuratio
n_guide_chapter09186a00800ca606.html#xtocid1689714
you need at most 600 bytes per session. For a full internet table from 1
AS, I think 128 mb is considered the minimum, although 96 might cut it.
Depending on your peering and how many clients are being firewalled, you
might want 192 - 256 mb total. I'm sure the ISP gurus on this list might
have more input on exact BGP memory requirements though. Just don't
undersize the router, as CBAC can get pretty processor intensive, especially
in the path of a Code Red attack.
Chuck Church
CCIE #8776, MCNE, MCSE
----- Original Message -----
From: <tsiartas@ameritech.net>
To: <ccielab@groupstudy.com>
Sent: Tuesday, November 12, 2002 6:03 PM
Subject: memory requirments for CBAC
> Does anybody know the memory requirements for a CBAC router?
> I think you have to calculate certain bytes per statfull session.
> Was wondering what would it be the recommended memory for a border
> router
> With CBAC and how much should we add on it for an internet BGP table.
>
> Thanks
> h
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Joe A
> Sent: Tuesday, November 12, 2002 4:08 PM
> To: 'Peng Zheng'; 'MADMAN'
> Cc: ccielab@groupstudy.com
> Subject: RE: upgrade 2501 pro
>
> This second router has 2M dedicated I/O memory, whereas the previous one
> doesn't, and therefore uses DRAM for that purpose. Again, that's just a
> change to the architecture, that's all.
>
> Joe
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Peng Zheng
> Sent: Tuesday, November 12, 2002 4:19 PM
> To: MADMAN
> Cc: ccielab@groupstudy.com
> Subject: Re: upgrade 2501 pro
>
>
> But on other 2501 router, I got:
> cisco 2500 (68030) processor (revision D) with
> 16384K/2048K bytes of memory.
>
> --- MADMAN <dave@interprise.com> wrote:
> > It's right under your nose;) 14336 + 2948 = 16M
> >
> > 2M is dedicated to I/O
> >
> > Dave
> >
> > Peng Zheng wrote:
> > >
> > > I upgraded my CPA 2501 pro to 2501, and upgraded
> > both
> > > flash and mem. I installed 16M mem, but it
> > displayed:
> > >
> > > cisco 2500 (68030) processor (revision L) with
> > > 14336K/2048K bytes of memory.
> > >
> > > where is other 2M?
> > >
> > > How can I make it 16M?
> > >
> > > Thanks you for help.
> > >
> > > __________________________________________________
> > > Do you Yahoo!?
> > > U2 on LAUNCH - Exclusive greatest hits videos
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> >
> > --
> > David Madland
> > CCIE# 2016
> > Sr. Network Engineer
> > Qwest Communications
> > 612-664-3367
> >
> > "You don't make the poor richer by making the rich
> > poorer." --Winston
> > Churchill
>
>
> __________________________________________________
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This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:58 GMT-3