01-20-2011 02:19 PM
Trying to connect a HP-C7000 blade server with a Virtual Connect Flex 10 connection with 10Gb links to a Catalyst 4900M.
Switch ports are as follows:
!
interface Port-channel1
description HP FLEX-10-VC
switchport trunk allowed vlan 4,8,10,11,16,22-24,69,99-101,156,192,300,500
switchport mode trunk
switchport nonegotiate
spanning-tree portfast trunk
interface TenGigabitEthernet1/1
description HP FLEX-10-VC
switchport trunk allowed vlan 4,8,10,11,16,22-24,69,99-101,156,192,300,500
switchport mode trunk
switchport nonegotiate
spanning-tree portfast trunk
channel-protocol lacp
channel-group 1 mode active
!
interface TenGigabitEthernet1/2
description HP FLEX-10-VC
switchport trunk allowed vlan 4,8,10,11,16,22-24,69,99-101,156,192,300,500
switchport mode trunk
switchport nonegotiate
spanning-tree portfast trunk
channel-protocol lacp
channel-group 1 mode active
01-20-2011 02:37 PM
I think the default for trunks is ISL, not 802.1q. Try adding this to your Po1 interface (should trickle down):
switchport trunk encapsulation dot1q
01-20-2011 03:24 PM
With most new hardware and software the default is 802.1q and ISL is not supported.
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01-21-2011 06:39 AM
Perhaps you should drop the LACP and just see if you can get one link up first. Lower the complexity.
01-21-2011 06:53 AM
That was the last step we tried Thursday.
01-21-2011 08:52 AM
Try doing this w/o trunking just to see if you can get packets to flow, so just an Port-channel in access mode.
How do you have your vSwitch configured?
01-21-2011 10:53 AM
Reinstalling VMware ESX corrected the problem. Looks like configuration issue between HP VC and ESX.
Sent from Cisco Technical Support iPhone App
01-21-2011 08:33 PM
HP / Cisco interop --- make sure you're running MST
10-30-2012 03:03 PM
Hey Bill,
We are having similar issue.But we have traffic working without the port-channel. When i put the ports into a port-channel. The two links go into suspended mode. We don't have LLDP configured on our switch. How did you fix ur issues? I would greatly appreciate any help.
11-01-2012 07:23 AM
It was a configuration error in the HP Flex Connect interfaces. The Flex Connect down-links had to be reconfigured to enable LACP and port-channeling.
11-06-2012 06:28 AM
Hi, if we configrue spanning-tree portfast trunk in the port channel we can make a loop,isn't it ?? becouse the vNet insde the HP c7000 are like a Switch and delivr bpdu,so why do we set spanning-tree portfast trunk ?
thanks
11-06-2012 12:14 PM
The internal switch in the HP c7000 is different. It is ok to use spanning-tree portfast trunk.
11-06-2012 12:39 PM
But why Do we Need to Set this command ? I Don't expect Access traffic,only trunk. There is no need portfast trunk Spam.treeg
11-07-2012 07:10 AM
This command starts passing traffic on all of the VLANs using the trunk. If the Flex Connect sees layer-1 come up but is unable to pass traffic it may think the interface is not working. I enable this on trunk connections to VMware hosts and Flex Connect interfaces. It is possible disabling portfast will not cause problems for the Flex Connect interfaces. You can test this in your environment and see what works.
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