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

[Church, Charles]

Brad,

	Sorry, I misread this initially as the 'switch convert mode virtual'
command.  That was the one I did on both.  It's my understanding that with
SXI, you no longer need the 'accept' command.  I seem to remember SXI
rejecting that a few months ago.  I didn't try that again since.  I'm
running SXI4.

Thanks,

Chuck 
-----Original Message-----
From: Brad Hedlund (brhedlun) [mailto:brhedlun at cisco.com] 
Sent: Sunday, July 11, 2010 1:48 PM
To: Church, Charles
Cc: Reinhold Fischer; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 10 gig ethernet interface up, line protocol down on VSL
connection


Charles,
You should only need to type 'switch mode accept virtual' just once,  
on the primary switch. If you typed it on each switch it tells me the  
VSL link never formed properly in initial conversion process.

Cheers,
Brad

Sent from my iPhone

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

On Jul 11, 2010, at 11:33 AM, "Church, Charles" <Charles.Church at harris.com 
 > wrote:

> Thanks Brad.  I did that step on both, both of them rebooted, but  
> both come up as the active sup, since the VSL link won't come up.   
> The config on switch 2 is correct Reinhold, using port channel 20  
> and link 2 on that one.  I'll be back with the devices tomorrow  
> morning, I'll dig through the logs and some other int  
> troubleshooting tomorrow.
>
> Chuck
>
> -----Original Message-----
> From: Brad Hedlund (brhedlun) [mailto:brhedlun at cisco.com]
> Sent: Sunday, July 11, 2010 12:19 PM
> To: Church, Charles
> Cc: Reinhold Fischer; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 10 gig ethernet interface up, line protocol  
> down on VSL connection
>
>
> 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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