
Static Virtual LANs (VLANs)
General Steps for Using VLANs
tagged member must have the same VID as that carried by the inbound, tagged packets generated on that VLAN.)
Port “X” receives an inbound, tagged Packet From VLAN “A”.
Is port
“X” a tagged No member of
VLAN “A”?
Yes
Forward the packet to any port “Y” on VLAN “A” for outbound transmission.
Drop the packet.
Note that the outbound port can be either a tagged or untagged member of the VLAN.
See also “Multiple VLAN Considerations” on page
General Steps for Using VLANs
1.Plan your VLAN strategy and create a map of the logical topology that will result from configuring VLANs. Include consideration for the interaction between VLANs and other features such as Spanning Tree Protocol, port trunking, and IGMP. (Refer to “Effect of VLANs on Other Switch Features” on page
By default, VLAN support is enabled for up to 256 VLANs.
2.Configure at least one VLAN in addition to the default VLAN.
3.Assign the desired switch ports to the new VLAN(s).
4.If you are managing VLANs with SNMP in an IP network, the VLAN through which you are managing the switch must have an IP address. For information on the procedure and restrictions when you configure an IP address on a VLAN interface, refer to Table