Switch port Ether channel

[sudhakara.py]

Hi

There are two switches(switch 1 and switch 2) and there are 4 links connected between these two switches. 

These links/ports are configured with port channel with PAGA protocol, but I didn't configure this port channel as trunk.

PC1 is connected to switch 1 and PC2 is connected to Switch 2. 

Now my question is when I am sending data from PC1 to PC2, which link will it use,

I think it will do load balance and that port channel will act as access port  Am I correct ?, correct me if am wrong.

Thanks in advance.

Sudhakar

Network Consultant Engineer, Cisco.

[Furose M]

1. if you did not configure it as Trunk explicitly, unless the DTP mode is "dynamic desirable" on either side and "dynamic auto" in 1 side, its going to act as Access link, provided the switch is not 6500/7600 whose default interface mode is "Routed port".

2. if you can successfully send data between PC1 and PC2, it means, it has connectivity through this inter switch link (no matter what mode is it running).

3. The switch will choose the Egress link in the port-channel based on the load balancing algorithm you are using in the switch.

if you want to determine how different switches would load balance and choose 1 link to send the data, you can refer to the following link.

http://www.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.html

Furose

Cisco TAC

[sudhakara.py]

Thank you Furose 

I need little more information about load balancing here, 

http://www.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.html  --- I can open this link but the related links are broken, Not able to get information.

[Paul Chapman]

Try this link:

http://www.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/116385-technote-etherchannel-00.html

PSC