[c-nsp] Catalyst 2950G Trunking Issue

[Michael K. Smith - Adhost]

Hello:

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Juan C. Crespo R.
> Sent: Sunday, March 25, 2007 1:51 PM
> To: saso pirnat
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Catalyst 2950G Trunking Issue
> 
> Well, It works the Device connected to the VLans ports works Ok, but
> the
> interface Vlan 1 on Catalyst A cannot see the interface Vlan 1 on
> Catalyst B.
> 
> Any Idea?? :-(
> 
> saso pirnat escribió:
> > dalton wrote:
> >
> >> is the trunk showing up?
> >>
> >> Make sure its a crossover cable connecting them as well.
> >>
> >> repost your config, it didn't come through.
> >>
> >> -dalton
> >>
> >> On Fri, Mar 16, 2007 at 11:44:54AM -0400, Juan C. Crespo R. wrote:
> >>
> >>> Hi Dears
> >>>
> >>>  I'm getting problems trunking two Catalyst 2950G, I try a lot of
> things
> >>> and I can't make it works. the VLAN 1 on both sides, can't make
> ping
> >>> each other, and neither Telnet or  SSH, Anyone could send me a
> config
> >>> examples about trunking on two 2950G?
> >>>
> >>> Thanks
> >>>
> >>> this is my config
> >>>
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> >>>
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> >>
> >
> >
> > You should specify which vlans are allowed in trunk:
> >
> > interface GigabitEthernet2/3
> >  switchport trunk encapsulation dot1q
> >  switchport trunk allowed vlan 1,10-25,354,456,845
> >  switchport mode trunk
> >  mls qos trust dscp

Could you post the configuration for both sides of the trunk?  You may also want to include:

- show int <whatever> trunk (on both)
- show int vlan 1 (on both)
- show are (on both)

Mike