[c-nsp] Using L3 switches as CPE

Andriy Bilous andriy.bilous at gmail.com
Thu Mar 25 10:43:31 EDT 2010


Trunk to PE could be quite handy. For xconnecting RSPAN VLAN over backbone
for example.

On Thu, Mar 25, 2010 at 2:58 PM, Steve Bertrand <steve at ibctech.ca> wrote:

> Hi all,
>
> I'm going to be deploying some old 3550's as CPE on a
> Fibre-over-Ethernet network. I've never used a layer-3 switch for this
> job before, I've always used a router with a separate switch. I'm
> looking for some advice, as the setup is a bit different from what I'm
> used to.
>
> What I think I have to do is this:
>
> - trunk vlan 768 through gi0/1 back to my PE router
> - configure an int vlan768 to contain the /30 ptp IP
> - configure a second vlan (eg: 5) and apply one of the client's IP
> addresses on it (which will act as their default gw)
> - configure the fa interfaces as access ports for vlan 5
> - enable ip-routing
> - set up BGP as usual, using int vlan768 as the update-source
>
> Does this sound right? Can anyone offer any other advice regarding this
> setup, particularly any config techniques that I should know about for
> this type of deployment?
>
> Steve
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