Brocade Converged Enhanced Ethernet Administrator's Guide v6.1.2_cee (53-1001258-01, June 2009)

Table Of Contents
Converged Enhanced Ethernet Administrator’s Guide 25
53-1001258-01
Chapter
3Configuring VLANs Using the CEE CLI
In this chapter
VLAN overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Ingress VLAN filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
VLAN configuration guidelines and restrictions . . . . . . . . . . . . . . . . . . . . . . 27
Default VLAN configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
VLAN configuration procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Configuring the MAC address table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
VLAN overview
IEEE 802.1Q Virtual LANs (VLANs) provide the capability to overlay the physical network with
multiple virtual networks. VLANs allow you to isolate network traffic between virtual networks and
reduce the size of administrative and broadcast domains.
A VLAN contains end stations that have a common set of requirements that are independent of
physical location. You can group end stations in a VLAN even if they are not physically located in the
same LAN segment. VLANs are typically associated with IP subnetworks and all the end stations in
a particular IP subnet belong to the same VLAN. Traffic between VLANs must be routed. VLAN
membership is configurable on a per interface basis.
The VLAN used for carrying FCoE traffic needs to be explicitly designated as the FCoE VLAN. FCoE
VLANs are configured through the CEE CLI (see “Configuring a VLAN interface to forward FCoE
traffic on page 30).
NOTE
Currently only one VLAN can be configured as the FCoE VLAN.