[c-nsp] L3 Interface for 2821

[Dan IOSUB]

the HWIC-4ESW have support for max.16 VLAN's;
and you can do a trunk link with all of them ...

On 7/4/07, Tom Storey <tom at snnap.net> wrote:
>
> The documentation for the HWIC-4ESW
> (
> http://www.cisco.com/en/US/products/ps5853/products_data_sheet0900aecd8016b
> f0b.html) mentions dot1q trunking as a supported feature, but doesnt seem
> to
> hint at how many VLANs can be trunked, therefore, I'd be assuming that it
> can do as many as is supported by your IOS version and featureset.
>
> But assumptions can be the mother of all f-ups, as we all know :-)






----- Original Message -----
> From: "Paul Stewart" <paul at paulstewart.org>
> To: "'Bernd Ueberbacher'" <noc at mynet.at>
> Cc: <cisco-nsp at puck.nether.net>
> Sent: Wednesday, July 04, 2007 10:19 PM
> Subject: Re: [c-nsp] L3 Interface for 2821
>
>
> > You only need to create the SVI's if you need layer3 in place... if you
> just
> > want to trunk VLAN's between the two there's no need to use them....
> >
> > I would image you can do a LOT of VLAN's on them (don't know for sure
> but
> > guessing at 250).... never done many as never had reason.  But the nice
> > thing as someone else confirmed is that you can do dot1q trunking on the
> > ports....
> >
> > Take care,
> >
> > Paul
> >
> >
> > -----Original Message-----
> > From: Bernd Ueberbacher [mailto:noc at mynet.at]
> > Sent: Wednesday, July 04, 2007 8:47 AM
> > To: Paul Stewart
> > Cc: cisco-nsp at puck.nether.net
> > Subject: Re: [c-nsp] L3 Interface for 2821
> >
> > 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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> > >
> > >
> >
> >
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