Port Trunking

Port Status and Configuration

For example:

HPswitch(config)# trunk 1-8 trk1

This command is valid in all cases (switching or routing) because all of the ports are in the same port group.

HPswitch(config)# trunk 9-14 trk2

This command is NOT valid if IP routing is enabled on the switch (because the selected ports are in different port groups and IP routing is enabled). If IP routing is enabled, this command generates an error message and will not be executed.

If a trunk group with ports in different port groups is created before IP routing is enabled, then using the ip routing command to enable IP routing generates an error message indicating the trunk group that violates the above rule. You can remedy this problem by reducing the trunk to only the ports that are in the same port group. To remove ports from an existing trunk, use the following command:

HPswitch(config)# no trunk < ports-to-remove>

Trunk Group Boundary Requirement for the Series 4100gl

Switch 10/100/1000 Module (J4908A)

On the J4908A, a trunk group (manual or dynamic LACP) must be comprised of ports from the same port group, as shown in table 3.

Table 10-3. Port Group Boundaries for Trunks on a Series 4100gl Switch 10/100/1000 Module (J4908A):

Ports

Group 1

1 - 5, 7 - 11, 16

Group 2

6, 12 - 15, 17 - 22

 

 

Manually or dynamically configuring a trunk with ports in different groups is not suppported. For example, configuring a port trunk with ports 10-14 is not supported because the ports used are from two separate groups. (Refer to “Trunk Group Boundary Requirement for the Series 4100gl Switch 10/100/1000 Module (J4908A)” in table 12-3on page 12-8.)

Port Security Restriction. Port security does not operate on a trunk group. If you configure port security on one or more ports that are later added to a trunk group, the switch resets the port security parameters for those ports to the factory-default configuration.

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