10-16-2009 07:11 AM - edited 03-06-2019 08:10 AM
When trying to configure "mls qos trust dscp" on the Gig-interfaces on a Sup720-10G in virtual mode I get the following error message:
" HWIF-QOS: QoS configs are not allowed on VSL Portgroup."
As far as I know only the 10G-int can be part of the VSL. Can somebody explain this and tell if it is impossible to trust DSCP on these Gig-ports when using the 10G ints for VSL.
10-16-2009 07:32 AM
Removing or modifying trust command is not permitted in VSL group.
Here is more info:
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps9336/white_paper_c11_429338.pdf
HTH
Reza
10-16-2009 09:44 AM
But as I understand it it is only the TenG-interfaces that are part of the VSL-group. Why should the gigE be affected by the shortcomings of the VSL-interfaces.
10-16-2009 10:12 AM
Can you post your VSL config here?
What if you use 10Gig ports from a line card for your VSL link instead of the Sup ports?
11-10-2009 12:58 PM
Did you ever find out what it going on with this? I just ran into the same issue and I'm unable to find anymore information.
Thanks!
Mark
11-11-2009 06:32 AM
No.
But as I understand, this is a shortcoming that tells you not to use any of the three Gig interfaces at all when running VSL on the 10G's. I have also found that using one of the Sup-10G int, together with one int on a 6708 LC, to form a etherchannel bundle to an access switch is impossible due to missmatch in QoS-capabilties.
11-11-2009 07:30 AM
Yeah, one of my coworkers suggested I look to see what ASIC(s) the gig ports were attached to... So it appears that ports 1-5 (gig and ten) are all on a single ASIC. So that explains it! Once you turn on VSL there really isn't anything you can do with the gig ports for QoS.
11-11-2009 01:23 PM
Hi.
To the best of my knowledge you cannot set separate QoS config for the 1gig ports of the Sup720-10G when you use the 10Gig ports for VSL. However, I do not as such have a link to underline my info - it's something I believe I heard from a colleague.
HTH, Ingolf
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