Cross stack etherchannel

saimunpial · ‎06-01-2010

hello,

in one of the data center we have presently six 3750G swithches in a single stack. Now we want to make a different stack with another two 3750 G switches which will be connected as etherchannel with the present stack. I have read the configuration from the cisco site that it must be done in LACP mode. But I have two questions regarding this issue:

1) is it possible to use 10 GB SFP uplinks ports to configure as etherchannel for cross stack?

2) LACP supports until 8 gbps full duplex. So if 10 GB SFP supports then I will configure in this manner that from the 2nd stack one of the sfp port from switch 1 will go to 1st stack switch 5 SFP port and another from 2nd stack switch 2 to 1st stack switch 6. So every SFP will support until 8 gb. But my questions whether

3750 G support cross stack?

advance thanks for any assist.

Saimun

Ganesh Hariharan · ‎06-01-2010

hello,

in one of the data center we have presently six 3750G swithches in a single stack. Now we want to make a different stack with another two 3750 G switches which will be connected as etherchannel with the present stack. I have read the configuration from the cisco site that it must be done in LACP mode. But I have two questions regarding this issue:

1) is it possible to use 10 GB SFP uplinks ports to configure as etherchannel for cross stack?

2) LACP supports until 8 gbps full duplex. So if 10 GB SFP supports then I will configure in this manner that from the 2nd stack one of the sfp port from switch 1 will go to 1st stack switch 5 SFP port and another from 2nd stack switch 2 to 1st stack switch 6. So every SFP will support until 8 gb. But my questions whether

3750 G support cross stack?

advance thanks for any assist.

Saimun

Hi Saimun,

Catalyst 3750 Series supports both CrossStack Fast EtherChannel and Cross-Stack Uplink Fast,Check out the below link for more information

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/prod_qas09186a00801b0971.html

Hope to Help !!

Ganesh.H

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