Ether channel Group number

Praveen AR · ‎06-08-2010

Hi all,

Is there any issues in creating duplicate ether channel group number in the same network but different switch.

For example

I have a core switch connecting two buildings which have 3 access layer switches

First Building

Switch 1 :Ether channel group 1 between core switch and Switch 1

Switch 2 : Ether channel group 12 between Switch 1 And Switch 2

Second Building

Switch 1 :Ether channel group 2 between core switch and Switch 1

Switch 2 : Ether channel group 12 between Switch 1 And Switch 2

My question is that is there any issue having same ether channel group number 12 in second building or it should be different number.

Please advice me

Jon Marshall · ‎06-08-2010

Praveen

Etherchannel group numbers are local to the switch so you can use the same number on different switches.

Jon

Praveen AR · ‎06-09-2010

Hi John ,

Thanks for your response.

So channel group is local to switch But i have a problem in my network .

In my network layer 2 ether channel using channel group mode on from Core switch to Edge switches and between local switch 1 ---> Switch 2 and between Switch 2 ----->switch 3.core switch ip address is 192.168.255.1 .so i gave default-gateway as192.168.255.1 all of the three Local switches.My problem is that i am not able to ping core switch ip from the switch 3 also i cannot ping switch 3 from any of the switches.I verified ether channel it shows up and connected and also it is trunking.Till switch 2 everything is fine I can ping all of the switches.Do i need to give default gateway in all of the three switches or i need to give only the switch i am connecting core switch.

Jon Marshall · ‎06-09-2010

Praveen

You should give a default-gateway to your edge switches although if you are pinging from within the same subnet they should respond anyway.

Jon