[c-nsp] L3 Interface for 2821

[Paul Stewart]

interface FastEthernet4
switchport mode access
switchport access vlan 10

interface Vlan10
ip address 10.1.1.1 255.255.255.0

Create the VLAN in your VLAN database and that should do the trick just
fine....  You need to use a SVI to make it layer3

I don't believe you can do trunking on the 4ESW but never had a reason to
try neither....  you could try doing a "switchport mode trunk", "switch
trunk allowed vlan 10,20" and create an SVI for each VLAN and see if that
works....

Paul
 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Bernd Ueberbacher
Sent: Wednesday, July 04, 2007 8:27 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] L3 Interface for 2821

Hi there!

Once again I have a small problem and I'm sure you guys can help me out ;-)
I have two 2821 routers. They have 2 Gi interfaces onboard.
In one of them I have a HWIC-4ESW.

I'd like to connect a Catalyst 2950 to a third interface of the router. 
I need to configure the switchports (on the Catalyst) as access ports with
different VLANs. On a L3 interface I could then create for example a
FastEthernet0/1.321 for the VLANs. On the HWIC-4ESW this isn't possible, as
it is only a L2 interface :-( I read that it should be possible to configure
a L2 interface to a L3 interface since 12.3(4)T (no switchport). This
doesn't work for me (or for this module?).

So what would be the best way to hook up the Catalyst to the router (for
this purpose)? Is there a (cheap) L3 FE module for the 2800 series
available?


Thanks,
Bernd

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