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2910al and P4000

stefano colombo_1
Super Advisor

2910al and P4000

We have 2 2910al-24G to use with P4000 storage.
The 2 2910al are connected with a 2-port lacp trunk

A VLAN has been enabled for connecting P4000 nodes , per vlan jumbo frames has been enabled .

Flow control is enabled on all P4000 ports.

P4000 nodes are configured with Adaptive Load Balancing

We are experiencing network problem with nodes , ping packets lost , when the P4000 are connected with both interfaces . If we disconnect one of them all is fine .

Is there anything to be configured on 2910 to better support iscsi operation ?

Also how can increase per-port buffer ?
I know I can reduce the qos queue but don't know exactly how to do it

thanks
2 REPLIES

Re: 2910al and P4000

Hello,

The HP docs say Flow Control and Jumbo frames isn't best practice for iSCSI

if you enable Jubo frames you should disable flow control.


Helper
Valued Contributor

Re: 2910al and P4000

Hi,

Another things to check is the LACP out port algorithm for HPN product, if this is sa-da, you need to configure your P4000 product to work in the same way.

Bye.