[c-nsp] channel fails when using sup 10g port ?

[Chuck Church]

Like Gert said, probably a mismatch on other end.  Here's some more info.
Do the ports have the same VLANs allowed if trunks, MTU, etc?  Seems like a
lot can break it.

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_configuration_examp
le09186a0080094470.shtml#po1a


Chuck

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jeffrey G. Fitzwater
Sent: Thursday, January 05, 2012 7:13 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] channel fails when using sup 10g port ?

I am trying to use the sup720-10G  10g port and another 10g port on a
6708-10G module as an ether-channel pair.

Running IOS 12.2.SXI3

QOS enabled globally, but not enabled on 10G ports by default.  If I do a
"show mls qos" it tells me that qos is NOT enabled on the 10G modules. (FIFO
mode)

The command "mls qos 10g-only" must be run to enable it on the 10g ports,
but you cannot use the 1g sup ports, which I do use. I have NOT enabled this
feature.

When I set up the channel, I added the "no mls qos channel-consistancy".
Not sure if I need it do to the above issue, just our policy to make sure
there is no mismatch issues.

When I try to bring up the channel I get the following . and the channel
creates a data loop and everything goes to hell, so I shut down one port to
break the loop.

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-------------------------------------------
----
16     Po16(SU)        LACP      Te13/1(P)
16     Po16A(SU)       LACP      Te7/4(P)

-----------------------------------
I have never seen the above documented anywhere but it definitely doesn't
look right.

I have tried every config possible for the channel but it still fails. (LACP
active/passive and ON)

The only thing I can think of is... there must be some issue with using the
sup 10G port in a channel.


Any ideas out there before I open a case?


Thanks for any help.


Jeff Fitzwater
OIT Network Systems
Princeton University



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