Specifications

172 Implementing IBM System Networking 10Gb Ethernet Switches
1. Add physical ports to a trunk group.
Run [no] portchannel <number> port <port alias or number> from the global
configuration mode to add or remove ports to or from a trunk group (Example 5-17).
Example 5-17 Static trunk configuration
AGG-1#configure terminal
Enter configuration commands, one per line. End with Ctrl/Z.
AGG-1(config)#portchannel 1 port 17-18
AGG-1(config)#portchannel 2 port 19,20
AGG-1(config)#portchannel 3 port 1,5
AGG-1(config)#^Z
AGG-1#
2. Enable the trunk group.
Run [no] portchannel <number> enable from the global configuration mode to enable or
disable trunk groups (Example 5-18).
Example 5-18 Enable static trunks
AGG-1#configure terminal
Enter configuration commands, one per line. End with Ctrl/Z.
AGG-1(config)#portchannel 1 enable
AGG-1(config)#portchannel 2 enable
AGG-1(config)#portchannel 3 enable
AGG-1(config)#^Z
AGG-1#
You can remove the current trunk group configuration by running no
portchannel <number>.
3. Configure hashing.
Traffic in a trunk group is statistically distributed among member ports by using a hash
process, where various address and attribute bits from each transmitted frame are
recombined to specify the particular trunk port the frame uses.
The switch can be configured to use various hashing options. To achieve the most even
traffic distribution, select options that exhibit a wide range of values for your particular
network. Avoid hashing of information that is not present in the expected traffic, or which
does not vary.
Trunk hash parameters are set globally. You can enable one or two parameters, to
configure any of the following valid combinations:
– SMAC (source MAC only)
– DMAC (destination MAC only)
– SIP (source IP only)
– DIP (destination IP only)
– SIP + DIP (source IP and destination IP)
– SMAC + DMAC (source MAC and destination MAC)