Dell Tor VLT port channel not working

On the member interfaces (port 13) on both switches, try adding "no switchport".  You can also try running the "default interface eth1/1/13" command.

Hi I have tried and server side LAG enabled and switch swide port channel came up but on server I see one side is showing vlans and other information but on other vmnic its not showing anything. Can you post correct vlt port configuration for both Dell switches which is going to emc dowbstream and should be a port channel.

Are the servers ESXi hosts?  If so, I'd really recommend against doing LACP to them. The reasoning is that it offers very little benefit as ESXi can do teaming and failover just as well, if not better.  If you are set on doing LACP to the servers, then this should be the config :

Member ports:

interface ethernet1/1/1
 no shutdown
 channel-group 1 mode active
 no switchport

Port channel interface:

interface port-channel1
 no shutdown
 switchport mode trunk
 switchport access vlan 1
 switchport trunk allowed vlan 100,101
 vlt-port-channel 1

Obviously you'll want to change the vlans to your vlans.  You'll need a vDS to do LACP to VMware.  Again, if you can avoid LACP to the ESXi servers, that is the best route to go.

Many thanks for your reply really appreciate it. I will check that and one question why no switchport command? it is a layer 2 port-channel. The same config should go on both switches, right?

It should be the same config on both switches.  As far as the "no switchport", I think just is a Dell OS10 thing.  Its just how the member port has to be set up, and doesn't play into how the actual port channel is configured.  The po interface is still a "switchport".