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" <[email protected]
> wrote:
-----Original Message-----
From: Reinhold Fischer [mailto:[email protected]]
Sent: Sunday, July 11, 2010 11:12 AM
To: Church, Charles
Cc: [email protected]
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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