[c-nsp] 10 gig ethernet interface up, line protocol down on VSL connection

[Reinhold Fischer]

On Sun, Jul 11, 2010 at 6:05 PM, Church, Charles
<Charles.Church at harris.com> wrote:
> -----Original Message-----
> From: Reinhold Fischer [mailto:reinhold.fischer at gmx.net]
> Sent: Sunday, July 11, 2010 11:12 AM
> To: Church, Charles
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 10 gig ethernet interface up, line protocol down on VSL connection
>
>
>>Are you negotiating the channel (PAGP/LACP) or is it configured to
>>channel mode "ON"? IIRC Cisco recommends "ON" for the VSL. The
>>behaviour that you descibe looks like one interface is configured to
>>mode ON and the other end tries to negotiate the portchannel.
>
>>hth,
>
>>Reinhold
>
> Yep, I'm using 'on'.  Here's the config for the Po and physical ints.  Same on the other one too:
>
> interface Port-channel10
>  description Switch 1 link to Switch 2
>  no switchport
>  no ip address
>  switch virtual link 1
>  mls qos trust cos
>  no mls qos channel-consistency
> end
>
> Router#sh run int t1/5/4
> Building configuration...
>
> Current configuration : 116 bytes
> !
> interface TenGigabitEthernet1/5/4
>  no switchport
>  no ip address
>  mls qos trust cos
>  channel-group 10 mode on
> end

Are you using a different port-channel number on switch 2 ? And the
port-channel on switch 2 is configured with "switch virtual link 2" ?