Re-initializing ports for trunking is required after you install the ISL Trunking license. You must re-initialize the ports being used for ISLs so that they recognize that trunking is enabled. This procedure needs to be performed only one time.
To re-initialize the ports, you can either disable and then re-enable the switch, or disable and then re-enable the affected ports.
You can enable or disable Trunking for a single port or for an entire switch. When you issue the portCfgTrunkPort or switchCfgTrunk command to update the trunking configuration, the ports to which the configuration applies are disabled and re-enabled with the new trunk configuration. As a result, traffic through those ports can be disrupted.
Displaying trunking information is useful to view the following information:
Use the portPerfShow command to monitor problem areas where there are congested paths or dropped links to determine if you need to adjust the fabric design by adding, removing, or
reconfiguring ISLs and trunking groups.
Re-initializing ports for trunking :
1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the islshow command to determine which ports are used for ISLs.
3. Enter the portdisable command for each ISL port.
4. Enter the portenable command for each port that you disabled in step 3.
Enabling Trunking on a port :
1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the portcfgtrunkport command to enable trunking.Mode 1 enables and mode 0 disables ISL Trunking.
In the following example, trunking is being enabled on slot 1, port 3.
switch:admin> portcfgtrunkport 1/3 1
Enabling Trunking on a switch :
1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the switchcfgtrunk command.
switch:admin> switchcfgtrunk 1 Committing configuration...done.
Displaying Trunking information :
1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the trunkshow command.