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

[Brad Hedlund (brhedlun)]

Charles,
FWIW, this happened to me once and it turned out I forgot the last  
step in the VSS conversion process:

'switch mode accept virtual'.

Cheers,
Brad

Sent from my iPhone

Brad Hedlund, CCIE 5530
Cisco Systems, Inc.
Technical Solutions Architect
Data Center
http://bradhedlund.con


On Jul 11, 2010, at 11:09 AM, "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
>
> Thanks,
>
> Chuck
>
>
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