Specifications

CHAPTER

7-1

Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR

OL-26895-01

Configuring VLANs

This chapter describes how to configure normal-range VLANs (VLAN IDs 1 to 1005) and

extended-range VLANs (VLAN IDs 1006 to 4094) on the Cisco MWR 2941 router. It includes

information about VLAN membership modes, VLAN configuration modes, and VLAN trunks.

Note For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release.

• Understanding VLANs, page 7-1

• Creating and Modifying VLANs, page 7-5

• Displaying VLANs, page 7-11

• Configuring VLAN Trunks, page 7-12

Understanding VLANs

A VLAN is a switched network that is logically segmented by function, project team, or application,

without regard to the physical locations of the users. VLANs have the same attributes as physical LANs,

but you can group end stations even if they are not physically located on the same LAN segment. Any

switch port can belong to a VLAN, and unicast, broadcast, and multicast packets are forwarded and

flooded only to end stations in the VLAN. Each VLAN is considered a logical network, and packets

destined for stations that do not belong to the VLAN must be forwarded through a router, as shown in

Figure 7-1. Because a VLAN is considered a separate logical network, it contains its own bridge MIB

information and can support its own implementation of spanning tree. See Chapter 9, “Configuring

STP.”