[c-nsp] Using older VIP2's in non-demanding apps

[Gert Doering]

Hi,

On Wed, Apr 06, 2005 at 07:24:43PM -0400, Bill Wichers wrote:
> >  - the number of routes on the VIP is not a function of "what is behind
> >    the VIP", but of "how many routes does the RSP know" (because, as far
> >    as I understand, *all* routes are alway distributed to the line
> >    cards [if dCEF is active])
> 
> That's what I was afraid of too... I have old VIP2-50's with only 32MB
> RAM, and there's no way they'll take a full table. Our old -40's at least
> have the max 64MB RAM on them.

You could use them on a pure "customers with no BGP" aggregation router
that only has internal + default routes...

> >  - the traffic load - you say "servers", and those tend to send lots
> >    of traffic... - for a bunch of T1/E1 line, I'd take a VIP2-40 any
> >    day, but a fully loaded FastE will max out a VIP2-*
> 
> I should have been more specific -- they are *colo customer* servers, and
> thus move far less bandwidth than the customers think :-) I'm told a
> VIP2-40 can handle about 70 Mb/s or so of "easy" traffic (not minimum-size
> packets or random DoS junk). Not sure about the -50, but in our
> application even 20-30 Mb/s per PA would be fine.

In that case, it should work :-) - if the customer gets hacked and starts
spewing DoS outbound, the VIP will likely choke, but the other VIPs in
the same machine will not be (very much) affected...

> > Still running Cisco 4700M's here...
> I still have some 2500's as CPE at a few customers. Trusty old things have
> been running for over a decade now.

Same here, some 2500s on the CPE side of a E1 line ;-)

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de