As Ashwin said, all the 4 ports would be load balancing. Just to add, the default load balancing algorithm would be src-dst-ip. It would be a flow based algorithm (i.e a session between one specific source & destination will always use one link till the time the session is not expired).
How do we change it to do "per-packet" load balancing?
In short, you don't. Cisco switches do not support per-packet load balancing method on EtherChannels. The primary reason is the possibility of frame reordering which is undetectable at Ethernet and IP layer and may cause serious trouble for the communicating applications.
With EtherChannels, you should make an educated guess as to which address fields (source/dest MAC, source/dest IP, source/dest L4 port) in the outbound traffic are the ones that vary the most, and configure your EtherChannel load balancing method to base its decision upon these most varying address fields. The options usually are:
SW-Dist1(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
Some higher-level switches may also allow you to use L4 port information (this 3560 running IP Base does not).
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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