Cisco Systems port channels

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Subject Author Date
port channels flamer die.spam@hotmail.com 07-10-08
Posted by flamer die.spam@hotmail.com on July 10, 2008, 10:44 pm
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when configuring a logical port channel on a switch, am I correct when
say I just need to add the configuration to the port channel?

so for example g1/1 and g1/2 are attached to p1.

i can then do

int p1
switchport trunk allowed vlan add 123


to add that vlan to all physical interfaces on port chan 1?

Flamer.

Posted by PooDBrown on July 12, 2008, 5:01 pm
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On Jul 10, 9:44=A0pm, "flamer die.s...@hotmail.com"
> when configuring a logical port channel on a switch, am I correct when
> say I just need to add the configuration to the port channel?
>
> so for example g1/1 and g1/2 are attached to p1.
>
> i can then do
>
> int p1
> switchport trunk allowed vlan add 123
>
> to add that vlan to all physical interfaces on port chan 1?
>
> Flamer.

Correct, the only thing to keep in mind is to put the channel-group 1
mode on on gi 1/1 and gi1/2 to create the portchannel. I have found
that if you don't it sometimes gets flaky with pushing the
configuration to the interfaces.

Sometimes if it doesn't push the cofiguration to the physical
interfaces a shut no shut on the portchannel pushes it down.

So initially...

int gi 1/1
channel-group 1 mode on

int gi 1/2
channel-group 1 mode on

int po1
switchport trunk allowed vlan add 123

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