07-10-2007 08:47 AM - edited 03-05-2019 05:13 PM
Howdy,
I would like to use LACP wih 2 NIC's on a server connecting to a 6509 blade. Problem seems to be that you can't put a port-channel interface in a vlan. Am I reading the docs correctly? Is there a workaround for this other than haveing a bunch of /30 subnets everywhere?
Thanks,
Mike
Solved! Go to Solution.
07-10-2007 11:04 AM
You'll need to configure the port-channel, it will just be layer2.
Heres an example of a switchport-
interface GigabitEthernet9/3
description BladeCenter
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,501,541-543
switchport mode trunk
switchport nonegotiate
no ip address
speed 1000
duplex full
channel-group 10 mode active
Example of the Port-Channel-
interface Port-channel10
description BladeCenter
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,501,541-543
switchport mode trunk
switchport nonegotiate
no ip address
07-10-2007 10:28 AM
Hi Mike
Could you point to the docs as to where it says that you can't do this. As lomg as all the ports are in the same vlan there is no reason why an etherchannel cannot be an access link rather than a trunk link.
Hope i've not misunderstood
Jon
07-10-2007 10:33 AM
Can't remember the exact reference, but anyway, here is what happens if you try it
interface Port-channel2
description Wintel Server
no ip address
shutdown
S3EDC03B#conf t
Enter configuration commands, one per line. End with CNTL/Z.
S3EDC03B(config)#interface port-channel 2
S3EDC03B(config-if)#switchport access vlan 248
Command rejected: Po2 not a switching port.
S3EDC03B(config-if)#
07-10-2007 10:41 AM
Mike
I will check this tomorrow but i don't think you tell the port-channel what vlan it is in. You just make sure that the individual ports that make up the port-channel are all in the smae vlan.
HTH
Jon
07-10-2007 10:46 AM
Here is what happens when I try to add vlan access to port-channeled ports:
Command rejected (Port-channel2, Gi7/1): Either port is L2 and port-channel is L3, or vice-versa
S3EDC03B(config-if-range)#
This looks like I need more L3 in the mix to me.
07-10-2007 10:29 AM
We trunk the ports instead of trying to use them as access ports. Can you do that?
07-10-2007 10:35 AM
Can you expand on your answer? Trunking is normally switch to switch, not host to switch.
Mike
07-10-2007 10:45 AM
You can trunk to a host, you just need a NIC that supports it. We do it with our ESX Servers. By trunking it you will still have VLAN access.
07-10-2007 10:58 AM
Sounds like the old joke, you can tune a piano, but you can't tune a fish (couldn't resist!)
So, just 802.1q trunks and no port-channel?
07-10-2007 11:04 AM
You'll need to configure the port-channel, it will just be layer2.
Heres an example of a switchport-
interface GigabitEthernet9/3
description BladeCenter
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,501,541-543
switchport mode trunk
switchport nonegotiate
no ip address
speed 1000
duplex full
channel-group 10 mode active
Example of the Port-Channel-
interface Port-channel10
description BladeCenter
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,501,541-543
switchport mode trunk
switchport nonegotiate
no ip address
07-10-2007 02:05 PM
That did the trick! Thanks!
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