Accton Technology ES4710BD - Manual (Page 291)

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E ES4710BD 10 Slots L2/L3/L4 Chassis Switch
Switch2 (Config)#interface eth 1/6
Switch2 (Config-Ethernet1/6)#port-group 2 mode on
Switch2 (Config-Ethernet1/6)#exit
Switch2 (Config)# interface eth 1/8-9
Switch2 (Config-Port-Range)#port-group 2 mode on
Switch2 (Config-Port-Range)#exit
Configuration result:
Add ports 1, 2, 3 of Switch 1 to port-group 1 in order, and we can see joining a group in “on” mode
is completely forced action, switch in other ends won’t exchange LACP PDU to complete
aggregation. Aggregation finishes immediately when the command to add port 2 to port-group 1 is
entered, port 1 and port 2 aggregate to be port-channel 1, when port 3 joins port-group 1,
port-channel 1 of port 1 and 2 are ungrouped and re-aggregate with port 3 to form port-channel 1. (it
should be noted that whenever a new port joins in an aggregated port group, the group will be
ungrouped first and re-aggregated to form a new group. Now all three ports in both Switch 1 and
Switch 2 are aggregated in “on” mode and become an aggregated port respectively.
13.4 Port Channel Troubleshooting Help
13.4.1 Monitor and Debug Commands
13.4.1.1 show port-group
Command: show port-group [] {brief | detail | load-balance | port |
port-channel}
Parameters: is the group number of port channel to be displayed, from 1 to
8; “brief” displays summary information; “detail” displays detailed information; “load-balance”
displays load balance information; “port” displays member port information; “port-channel”
displays port aggregation information.
Command mode: Admin Mode
Usage Guide: If “port-group-number” is not specified, then information for all port groups will be
displayed.
Example: Adding port 1/1 and 1/2 to port-group 1.
1. Display summary information for port-group 1.
Switch# show port-group 1 brief
Port-group number : 1
Number of ports in porg-group : 2 Maxports in port-channel = 8
Number of port-channels : 0 Max port-channels : 1
Displayed information Explanation