Connectivity Issue

[Paul Hutchings]

Thanks Fred, this is where different HP documents seem to contradict a little.

If I have:

P4000 nodes
2x2910al with 10gbps inter-switch-connection
vSphere hosts running mix of VM's
Wish to use MPIO on vSphere and within Windows VM's

Where *exactly* do I need to enable Flow Control?

Some documents suggest globally, others suggest only on the ports the P4000 uplinks to.

[Fred Blum]

You can enable Flow Control on the 2910al per port and Jumbo Frames per VLAN.

http://www.hp.com/rnd/support/manuals/2910-chapters.htm

http://cdn.procurve.com/training/Manuals/2910-MCG-Feb09-10-Ports.pdf

http://cdn.procurve.com/training/Manuals/2910-MCG-Feb09-W_14_03.pdf

[Paul Hutchings]

Thanks Fred.

Sorry if I appear to be pedantic (or just thick, quite open to that too) but I'm still not clear which ports I would enable flow control on.

Suppose I have:

Switch 1 - Ports 1-6 P4000 NICs
Switch 1 - Ports 7-10 vSphere iSCSI NICs (mix of host and guest MPIO)
Switch 1 - Port A1 10gbps link to Switch 2
|
10gbps link - tagged iSCSI and vMotion VLANs
|
Switch 2 - Ports 1-6 P4000 NICs
Switch 2 - Ports 7-10 vSphere iSCSI NICs (mix of host and guest MPIO)
Switch 2 - Port A1 10gbps link to Switch 1

[Fred Blum]

Switch Flow control on all ports and Jumbo support per VLAN.

Flow control is a best practise recommendation and jumbo frames an optional recommendation.