Re: Cisco router hardware advice needed..

["Brian" <bri () sonicboom org>]

One key thing to keep in mind is that vxrs with your desired npe have 2 hw
buses, the even slots are 1 bus, the odds are the other, so be sure to
distribute bw accordingly.
http://www.cisco.com/en/US/products/hw/modules/ps2033/products_configuration
_guide_chapter09186a00801056f4.html is a good link for looking this stuff
over.
I have a minor comment on the subint thing, in the past I worked for a
provider that had a non vxr 7206 with ONE t3 and all thos esubints/maps and
it worked well.

Bri

----- Original Message -----
From: <haesu () towardex com>
To: <nanog () merit edu>
Sent: Thursday, November 21, 2002 7:06 PM
Subject: Cisco router hardware advice needed..


> Hello,
>
> We currently run a small ISP network with two Linux based routers called
ISis
> (www.imagestream.com) to aggregate all the customers into the backbone.
>
> There are two ISis routers and each ISis has two frame-relay T3's. All
> customers have a frame-relay T1 and we setup the PVC DLCI mappings over
the
> frame cloud..
>
> Now, the ISis routers are too much of a low quality and unacceptable for
our
> ever-growing network. (Please don't reply back to me telling me how Linux
for
> ISP routing is incorrect to begin with, etc, etc.. I understand and
agree.. I
> never made the call the go with Linux based routers in the beginning..)
>
> Anyway.. with that being said. We are in process of removing these ISis
> routers and replacing them with Cisco routers.
>
> We are currently thinking of using Cisco 7206VXR's with at least an NPE300
per
> replacement of ISis. So that would be two Cisco 7206 routers, each with
two
> frame-relay T3's. Each Cisco 7206 router will have about approximately 150
or
> so serial sub-interfaces for customer PVC mapping.. And each 7206 will
have a
> 100Meg FastEthernet connection to the backbone core router (since two T3's
> saturating only goes up to about 90Mbps).
>
> Now the question is.. Can a Cisco 7200 handle the two frame-relay T3's
with
> 150 or so subinterfaces? My impression of a 7200 is that it is more
designed
> for deployment at the border, not much at the edge/aggregation.. What do
you
> people think? If it cannot handle such pressure, what other models do you
guys
> suggest for us? We are looking at both Cisco and Juniper products, but we
> would like to use Cisco whenever we can, so Cisco is our preference.
>
> Thanks in advance.
>
> --haesu
>
>
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