UCS enable/Disable DCE

fernandoborges1 · ‎10-09-2014

HI Gurus

I am very new to UCS and I am not even close to be as knowledgeable as you gurus are , so go easy on me.

Here is my problem and I hope you gurus can help.

I have a blade that shows 8 DCE interface , and I think this is the reason why this particular Host is on 40GE, now all my other blades on the same chassis has 4 DCE interface creating a set of 20GE, I really need to know.

Is this a hardware issue that came with the blade
If so is there a way on UCS to disable individual DCE interface, so I can have 4 active DCE and bring the speed to 20GE.

I hope I made sense for any of you.

Thanks a bunch

Walter Dey · ‎10-09-2014

Is this a hardware issue that came with the blade

Yes, this all depends on the hardware configuration of your blade, specially the I/O adaptor config. Port-channel between I/O adaptor and IOM are done automatically and cannot be changed.

If so is there a way on UCS to disable individual DCE interface, so I can have 4 active DCE and bring the speed to 20GE.

Not to my knowledge. It's autoconfigured and cannot be changed.

eg. if you have a blade with 2 I/O adaptors, one VIC-1240, one VIC-1280, plus a IOM 2208.

you see 4 DCE interfaces for VIC-1240, and 4 for VIC-1280; and the 4 are configured as a 2 link port-channel to fabric A resp. B.

in the case of a VIC-140 and a extender, you would see 8 DCE interfaces; 4 in a port-channel to each fabric.

This has been discussed before

https://supportforums.cisco.com/discussion/12130401/vnic-bandwidth-question

https://supportforums.cisco.com/discussion/12207581/m81kr-vic-1240-and-vic-1280

https://supportforums.cisco.com/discussion/11897266/vic1240-and-2208xp

https://supportforums.cisco.com/discussion/11500981/vic-1280-vs-vic-1240-port-expander

https://supportforums.cisco.com/discussion/11900386/10g-between-adpater-and-blades-vic12401280