Problems connecting HP Blade Chassis to 4500

[mramirez-t]

I'm having an issue connecting an HP Blade Chassis to a 4500 switch stack.  The 4500 is stacked using virtual links.  The chassis has 2 NICs that are connected to the 4500, in t1/1/10 and t2/1/10 respectively.  I configured both to be part of port-channel5 and set up int po5 as a trunk allowing all VLANs through.  I configured 1/1/10 and 2/1/10 as trunks as part of po5, allowing all vlans through.  Also checked using sho int trunk that po5 and both ports are allowing all VLANs through, confirmed.  

There are 4 other switches connected to this 4500, which is our core backbone switch for internal VLANs.  Each trunk to other switches allows all VLANs through, and there are zero problems connecting to those VLANs through those other switches.

Not sure what's going wrong here as I'm setting up these new trunks to the HP Blade Chassis the same way I'm configuring the other trunks to switches.

Any help appreciated.

[Reza Sharifi]

Are using LACP or static (mode on)?  Most 3rd party devices work fine with mode on.

Are you using VMs on the HP chassis?

Can you post relevant configs?

HTH

[mramirez-t]

Attached config.  Right now, they are set up in port-channel 5.  I have tried removing the port channel and connecting the chassis using just one port 1/1/10 and then doing the same with just using 2/1/10.  I've also tried not setting up the ports as trunks and just as access mode switchports to only the VLAN that I know one VM is part of, which doesn't work either.

[Reza Sharifi]

It appears that you are using LACP.

Can you test with mode on? 

Also, can you post the output of "sh etherchannel summary"

channel-group 5 mode on

[mramirez-t]

I set it up as 'mode on'.  Both ports come up as P - bundled in port channel

but still no trafffic.

[Reza Sharifi]

And the Portchannle is up? Do you see "Po5(SU)" when you issue "sh etherc summ"?

When you say "but still no trafffic" how are you testing it? Can you ping the gateway of the vlans for the VMs?

[pankajbhosale]

Hi,

Correct me if I am wrong

You want to connect HP chasis which is a blade server with 2 physical ports to 4500 Cisco switch.

If you are doing this can you try doing the following

Cisco single interface to be configured as trunk.

Connect this port to any of the nic on HP.

( no port channel, no dual physical connections)

Explanation

This is my knowledge it can be false

1) 2 NICs on HP are used for redundancy.

If any of the nic fails the other is activated (teaming is the term used)

Conclusion both NICs can't be active at same time ( no load balancing is expected)

2) ether channels are used for load balancing means both physical ports ( in this case 1/1/10 & 2/1/10 will be active )will try to send and receive data.

Bye

Have a nice day