L2 EtherChannel w_different VLANS

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Jul 16th, 2009
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Can you build a 2 channel etherchannel or a 2 channel etherchannel dot1Q TRUNK and then put TWO vlans on it ??


Here is what the customer is asking for >> Specifically with the Log Server, though we'd like to have a separate Ethernet cable dedicated to the management VLAN, we can trunk it over the same EtherChannel physical cables.


So - They are asking for VLAN X = data

VLAN Y = mgmt ON THE SAME ECHANNEL bundle. We use Lacp on this type of server to access 6509 bundle. Thx.


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Jon Marshall Thu, 07/16/2009 - 08:31
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David


"Can you build a 2 channel etherchannel or a 2 channel etherchannel dot1Q TRUNK and then put TWO vlans on it ??"


If i understand correctly that is exactly what an etherchannel trunk is ie. a number of aggregated links that are seen as one logical link that can pass multiple vlans.


So yes, create the L2 etherchannel, make it a trunk and if you only want to allow just the 2 vlans use the "switchport trunk vlan allowed ..." configuration to restrict the vlans on the trunk.


Jon

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