Converged Enhanced Ethernet Administrator's Guide v6.4.0 (53-1001761-01, June 2010)

Converged Enhanced Ethernet Administrator’s Guide 27
53-1001761-01
CEE and LAN integration
3
DRAFT: BROCADE CONFIDENTIAL
In the sample network shown in Figure 5, there are three VLANs: VLAN 100, VLAN 10, and VLAN 20.
VLAN 10 and 20 are used to isolate the L2 traffic from the two server groups. These VLANs carry IP
traffic from the servers to the data center LAN. Any routing between these VLANs is performed at
the distribution layer of the network. VLAN 100 is a special VLAN used for FCoE traffic between the
servers and storage connected to the Fibre Channel fabric and must be configured as an FCoE
Forwarder (FCF). Only FCF-capable VLANs can carry FCoE traffic.
In addition to creating a special VLAN for FCoE traffic, VLAN classifiers are applied to incoming
EtherTypes for FCoE Initiation Protocol (FIP) and FCoE. VLAN classifiers are rules used to
dynamically classify Ethernet frames on an untagged interface to VLANs.
To configure VLAN membership, perform the following steps in global configuration mode.
1. Create the VLAN interfaces on the Brocade FCoE hardware using the CEE CLI. For details, see
“Creating a VLAN interface” on page 35.
Example of creating two VLAN interfaces and assigning each one to a server group.
switch(config)#interface vlan 10
switch-cmsh(conf-if-vl-10)#description server group 1
switch(config)#interface vlan 20
switch-cmsh(conf-if-vl-20)#description server group 2
switch(config)#interface vlan 100
switch-cmsh(conf-if-vl-100)#description FCoE VLAN
switch-cmsh(conf-if-vl-100)#fcf forward
2. Create VLAN rules and a VLAN classifier group for these two EtherTypes. For details, see
“Creating a VLAN classifier group and adding rules” on page 40.
Example of creating VLAN rules and classifier groups.
switch(config)#vlan classifier rule 1 proto fip encap ethv2
switch(config)#vlan classifier rule 2 proto fcoe encap ethv2
switch(config)#vlan classifier group 1 add rule 1
switch(config)#vlan classifier group 1 add rule 2
3. Apply the VLAN classifier group to any CEE interface. This step is optional. For details, see
“Activating a VLAN classifier group with an interface port” on page 40.
4. Enter the copy command to save the running-config file to the startup-config file.
switch(config)#end
switch#copy running-config startup-config
Configuring the CEE Interfaces
Traffic from downstream CEE interfaces can be assigned to a VLAN using several methods:
• The VLAN tag contained in the incoming frame
• The VLAN classifiers
• The Port-VLAN ID (PVID)
Because the Ethernet uplink ports from the Brocade FCoE hardware to the distribution layer
switches will carry traffic for multiple VLANs, they are configured as 802.1q trunk ports.
The downstream CEE ports connected to the server CNAs are configured as access ports with a
PVID of either 10 or 20. The VLAN classifier group created for the FIP and FCoE EtherTypes must be
applied to the interfaces in order to place FCoE traffic on the correct VLAN. The CEE map is also
applied to the interface.