[c-nsp] L3 Interface for 2821

[Bernd Ueberbacher]

Thanks for the fast reply!

What would I do if I need about 10 VLANs on my 4 port interface?

The router doesn't shout at me if I configure one of the ports of the 
4ESW as a trunk. Should I do that and then create interface Vlan1, 
Vlan2, ...? Is this a "good" solution, considering performance etc? Is 
there a limit for the number of VLANs (HWIC-4ESW)?

Thanks,
Bernd






Paul Stewart wrote:
> 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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