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Connecting Nexus 5000 to HP Bladeserver using LACP

We are connecting the Nexus 5000 to an HP bladeserver. I know the NICs are HP NC553i. We have 2 5000 and create a port-channel. Everything works fine until we turn on LACP and then everything goes down.

Thanks,

Diane

2 REPLIES
Cisco Employee

Connecting Nexus 5000 to HP Bladeserver using LACP

LACP is a protocol negociation normally used between switches, not switch and host.

What switching module does the HP Blade Chassis have (uplinked to the N5Ks) ?

Pass through modules will not be able to create an LACP port channel unless the host can speak LACP.  Host OSes like ESX can only support a static port channel (using IP Hashing), but not LACP.

The NIC model is irrevelant for the most part.

Regards,

Robert

Cisco Employee

Connecting Nexus 5000 to HP Bladeserver using LACP

Robert is correct its the neighbor device also needs to be able to do LACP. You could also troubleshoot this issue running commands such as :

sh lacp counters interface port-channel 301

and looking for LACPDUs your end sent and recived to see if things are even working as expected.

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