load balance of 3750 port channel

[acbennyma]

Dear all,

What is the load balance method of 3750 port channel ( by source ip , or by source mac ) to diver traffic to paths?

I have tried to use 10.242.104.101 and 10.242.104.102 as source ip, it will travel to the same link (G0/1) within one port channel (G0/1+G0/2).

Howerver, if I later use 10.242.104.109, then this time it will traffic to G0/2 link. What's the concept behind.

[Jerry Ye]

Default port-channel load-balancing algorithm is based on Source MAC.

Rack1SW1#sh etherchannel load-balance

EtherChannel Load-Balancing Configuration:

        src-mac

EtherChannel Load-Balancing Addresses Used Per-Protocol:

Non-IP: Source MAC address

  IPv4: Source MAC address

  IPv6: Source MAC address

However, IOS supports multiple load-balancing algorithm, you can choose it based on your environment.

Rack1SW1(config)#port-channel load-balance ?

  dst-ip       Dst IP Addr

  dst-mac      Dst Mac Addr

  src-dst-ip   Src XOR Dst IP Addr

  src-dst-mac  Src XOR Dst Mac Addr

  src-ip       Src IP Addr

  src-mac      Src Mac Addr

HTH,

jerry