Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 765
Assign interfaces to a VLAN, Con Layer 2 Data Link Mode
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Figure 44-3. show vlan Command Example Force10#show vlan Codes: * - Default VLAN, G - GVRP VLANs NUM * 1 2 3 4 5 6 Force10# Status Inactive Active Active Active Active Active Q Ports U So 7/4-11 U Gi 0/1,18 U Gi 0/2,19 T Gi 0/3,20 U Po 1 U Gi 0/12 U So 9/0 A VLAN is active only if the VLAN contains interfaces and those interfaces are operationally up. In Figure 44-3, VLAN 1 is inactive because it contains the interfaces that are not active. The other VLANs listed in the Figure 44-3 contain enabled interfaces and are active. Note: In a VLAN, the shutdown command stops Layer 3 (routed) traffic only. Layer 2 traffic continues to pass through the VLAN. If the VLAN is not a routed VLAN (that is, configured with an IP address), the shutdown command has no affect on VLAN traffic. When you delete a VLAN (using the no interface vlan vlan-id command), any interfaces assigned to that VLAN are assigned to the Default VLAN as untagged interfaces. Assign interfaces to a VLAN Only interfaces in Layer 2 mode can be assigned to a VLAN using the tagged and untagged commands. Use the switchport command to place an interface in Layer 2 mode. These Layer 2 interfaces can further be designated as tagged or untagged. For more information, refer to the Interfaces chapter and Configure Layer 2 (Data Link) Mode on page 288. When an interface is placed in Layer 2 mode by the switchport command, the interface is automatically designated untagged and placed in the Default VLAN. To view which interfaces are tagged or untagged and to which VLAN they belong, use the show vlan command. For example, Figure 44-3 shows that six VLANs are configured, and two interfaces are assigned to VLAN 2. The Q column in the show vlan command example notes whether the interface is tagged (T) or untagged (U). For more information on this command, see the command statement in the Layer 2 chapter of the FTOS Command Reference. To view just the interfaces that are in Layer 2 mode, enter the show interfaces switchport command in the EXEC privilege mode or EXEC mode. Virtual LANs (VLAN) | 765
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