Etherchannel between Cat 3750G and old Cat 5509

Unanswered Question
Aug 30th, 2007
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Hi,


I'm trying to create a two-port channel (thought is to get more 200MB bandwidth) between a new 3750G and our old Cat 5509.


I've set channel on for 2 ports on the 5509 (and set them each to 100/full duplex). That seems OK. I can't now enable channeling on the 3750. I'm using Network Assistant > create a channel between two ports, select Mode to On (also tried auto) and get the following error when I Apply:


"Gi1/0/48 operational trunk mode Down and Gi1/0/47 operational trunk mode is Static Access."


I only have Gi1/0/47 physically connected at the mo; fearful of connecting /48 other without the channel being enabled.


Can anyone help?


Many thanks



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fred.mancen Thu, 08/30/2007 - 12:13
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Hi Dominic.


It is possible to create a Ether Channel between these switches. I had some FEC between Cat 6K/3750 and Cat 5K that was working very fine.

At first, re-check your settings on the ports, because maybe you have a problem with the native VLAN on the Cat 5K. Remember: the native VLAN, trunk encapsulation, STP mode, and the operational mode on the Ether Channel must be exactly the same on all ports.


I hope it helps.


Regards.

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