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Modifying VLAN Subranges

You can shorten or expand a subrange by modifying the subrange values of a VLAN range. You can expand a subrange if none of the VLAN IDs or S-VLAN IDs added overlap with any other subrange. You can shorten a subrange if none of the VLAN IDs or S-VLAN IDs have existing dynamic VLAN subinterfaces. You can also modify an existing subrange by configuring it to use agent-circuit-identifier information rather than a range of VLAN IDs.

You can modify only a single specific subrange at a time. The following example specifies the original VLAN subranges encompassing S-VLAN IDs 201–250 with VLAN ID 2.



host1(config-if)#vlan bulk-config test svlan-range
101 150 1 1 

 svlan-range
201 250 2 2 svlan-range 501 550 5 5 svlan-range 301 350 3 3

The following command modifies the second subrange from S-VLAN IDs 201–250 with VLAN ID 2 to S-VLAN IDs 210–230 with VLAN IDs 2–3.



host1(config-if)#vlan bulk-config test modify
svlan-range 210 230 2 3

The following command modifies the third subrange from S-VLAN IDs 501–550 with VLAN ID 5 to S-VLAN IDs 501–550 with user identification that is based on agent-circuit-identifier information.



host1(config-if)#vlan bulk-config test modify
svlan-range 501 550  agent-circuit-identifier

The router retains any overriding profiles assigned to a subrange after you modify the subrange if the override assignment still falls within the modified subrange. If the assignment falls outside of the newly modified subrange, the router drops the overriding profile assignment.

You cannot modify a subrange at the same time you are adding or removing a subrange. If the new modified values for a subrange partially overlap with another subrange, the operation fails and the router displays an error message.

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