[c-nsp] E/MPLS enabled gear

[Andris Zarins]

AFAIK Cisco 2950/60 series switches are limited to 1500byte MTU, so cant
actually 'run MPLS' even thru them, as MPLS frames are larger than 1500
bytes. 2924-XL series has configurable MTU and you can increase it above
1500. 

If such setup is OK for you - by my opinion most viable solution would
be 3560 series for extra Ethernet ports plus some router - model depends
on bandwidth/features you need. 

Hope that helps,
A

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Kristofer
Sigurdsson
Sent: Wednesday, April 05, 2006 12:22 PM
To: Gert Doering
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] E/MPLS enabled gear

2006/4/5, Gert Doering <gert at greenie.muc.de>:
> Hi,
>
> On Tue, Apr 04, 2006 at 05:02:12PM -0400, Graham Wooden wrote:
> > Thoughts on this type of equipment?  Anything on the used or new
Cisco line?
> > I don't know my budget at this second, but it maybe flexible
depending on
> > what we can get.  I would think $15K per device.
>
> As far as I know, the only box Cisco builds that does MPLS on "more
than
> a few" GigE ports is the 6500/Sup32-3B or Sup720-3B.
>
> $15K per device is a bit tight, but might work out for a
7603+Sup32-3B-8GE
> and a Copper-Gbit-Blade.
>
> (Yes, you said that you can't use Sup32s - but there isn't anything
else,
> GSR is MUCH more expensive)

What about a simple switch, say a Cat2960, with 24 FE ports and two
GigE uplinks?  You could plug that into a router, say, 7301, and use a
VLAN trunk between.  Then you could do EoMPLS with dot1q subinterfaces
on the router.

Of course, this has some restrictions on bandwidth and you can't give
your customers "port mode" EoMPLS, i.e. mirroring VLAN trunks, but
then again, if you want something, you have to pay for it...

I believe you could get a used Cat2900 or a 2950, plus a 7200VXR or
7301, well within $15k USD.  You could even add a 3508G for additional
GigE ports.  If you get an NPE-G1 or a 7301, you have three GigE's on
the router, one could be uplink, one downlink to the 2950 and one
downlink to the 3508.

-Kristo

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