hi every body!
I understand that links in ether channel are are numbered from 0 through 7 . If they are 4 links in etherchannel, they would be numbered as L0,L1,L2,L3.
My question is how etherchannel decides which link will get what number?
For example if we have two switches connected to each other by ports f0/1,f0/2,f0/3 and f0/4 on both sides, which ports would be designated by etherhchannel as L0, L1 ,L2,L3?
Does etherchannel base its own numbering on port number?
thanks a lot!
I don't know what I see in your etherchannels is that lowered numbered ports get lower indexes but in our case we usually connect the links in a symmetric way between chassis:
3/6 --- 3/6
3/7 --- 3/7
using manual configuration between switches, LACP with multi NIC servers
So I cannot demonstrate if there is a bundle owner / designated switch that provides a reference but if you read about LACP you can see that it has this concept and then the links are used from the lowest index on the best device.
LACP allows you to assign priorities to the member links
lacp port-priority 33000
As a matter of fact, the switches assign indexes to the ports that are member links and this is important to know.
Hope to help