topic Re: VC Flow Control Questions in BladeSystem - General

VC Flow Control Questions

Tusc — Thu, 06 Oct 2011 15:26:26 GMT

I read on another forum that flow control is "ON" by default for Flex10\FlexFabric downlink ports only and not uplink ports. Is this true? Is there a CLI command I can use to verify flow control settings? I know how to change the flow control setting but not see the current setting in use.

Oh, and a little background.. our Cisco switches have been creating sep port groups for our uplink ports due to mis-matched flow control settings. So I am trying to figure out what is going on. :)

Re: VC Flow Control Questions

Psychonaut — Fri, 07 Oct 2011 15:24:56 GMT

This was posted a couple of weeks ago - it talks about the default settings; but doesn't answer how to show what it is currently set at:

http://h30499.www3.hp.com/t5/HP-BladeSystem-Virtual-Connect/Virtual-Connect-FlexFabric-interconnect-modules-and-Ethernet/m-p/5337889/highlight/true#M1529

Re: VC Flow Control Questions

Psychonaut — Fri, 07 Oct 2011 19:47:22 GMT

Have you tried show statistics? Or DCBX Priority Flow Control State? It looks like one of those should show you that status.

Re: VC Flow Control Questions

Tusc — Tue, 11 Oct 2011 16:37:10 GMT

Yeah.. I get:

DCBX Priority Flow Control State The feature is operationally disabled

Does that mean someone manually disabled it?

Re: VC Flow Control Questions

Psychonaut — Tue, 11 Oct 2011 17:12:46 GMT

I think I gave some bad advice there; we should probably disregard DCBX. I just ran a show and this is what I saw:

->show advanced-networking
PacketBufferOverallocationRatio : 1
FlowControl : auto

Re: VC Flow Control Questions

Tusc — Thu, 13 Oct 2011 18:15:36 GMT

Perfect, thanks