[nsp] Switch/Router to use in colocation

Michael Loftis mloftis at wgops.com
Wed Aug 20 11:33:21 EDT 2003

Not so much a colo setting but in a enterprise environment...We used 
Cat5500 and the RSM (Route/Switch Module) and a single Sup card.... 5.5s 
are disocntinued now but the unit was fully capable of handling *ALL* the 
traffic I could throw at it (at one point I had it routing close to a full 
gigabit internally)...That said it only did ethernet connections, but it 
did them damned well.  The Cat5.5k are EOL/EOS but as I understand it the 
6.5 is the replacement for those.  They should handle admirable ina n 
ethernet environment.

The one issue I had witht hem was that the RSM would process switch EVERY 
packet ont he Default VLAN on it's internal/backplane 'trunk' interfaces. 
So you had to (assuming defaults) totally avoid Vlan1 at all costs in order 
to get anything more than about 80mbit out of it.

Best luck.

--On Wednesday, August 20, 2003 6:52 AM -0400 Kenny Stoltz <kenny at qx.net> 

> I've been using several lower end catalyst switches (3548, 2924) combined
> with a 7500 series router to run colocation. We're now pushing the
> 100+mb/s range in our colocation and I'm finding lots of problems with
> our this setup in general. Specifically the ISL trunks get maxed out
> easily and the VTP domain is a bit of a nightmare to manage.
> I'm looking at upgrading to the catalyst 6509 with an MSFC or a similar
> large catalyst switch. What I'd like to do is have one big device that
> can speak EIGRP or alternatively a fast switch with gigabit uplinks into
> a reasonably powerful router. I'd like this to scalable to at least 300
> colocated customers with probably 200mbits of bandwidth in, as I assume
> I'm going to be paying out some serious cash and I don't want to have to
> make that sort of investment again. Does anyone have experience with a
> high-bandwidth ethernet coloc setup with full compliment of access-lists
> and traffic shaping who might have some recommendations?
> Kenny
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