Configuration Guide User guide

742 FastIron Configuration Guide
53-1002494-02
VLAN overview
Example 2—More complex port-based VLAN configuration
Figure 73 shows a more complex port-based VLAN configuration using multiple Layer 2 switches
and IEEE 802.1Q VLAN tagging. The backbone link connecting the three Layer 2 switches is tagged.
One untagged port within each port-based VLAN on FESX-A connects each separate network wide
Layer 2 broadcast domain to the router for Layer 3 forwarding between broadcast domains. The
STP priority is configured to force FESX-A to be the root bridge for VLANs RED and BLUE. The STP
priority on FESX-B is configured so that FESX-B is the root bridge for VLANs GREEN and BROWN.
FIGURE 73 More complex port-based VLAN
To configure the Port-based VLANs on the FESX Layer 2 switches in Figure 73, use the following
method.
Configuring port-based VLANs on FESX-A
Enter the following commands to configure FESX-A.
Brocade> enable
Brocade# configure terminal
Brocade(config)# hostname FESX-A
Brocade-A(config)# vlan 2 name BROWN
Brocade-A(config-vlan-2)# untagged ethernet 1 to 4 ethernet 17
Brocade-A(config-vlan-2)# tagged ethernet 25 to 26
Brocade-A(config-vlan-2)# spanning-tree
Brocade-A(config-vlan-2)# vlan 3 name GREEN
Brocade-A(config-vlan-3)# untagged ethernet 5 to 8 ethernet 18
Brocade-A(config-vlan-3)# tagged ethernet 25 to 26
Brocade-A(config-vlan-3)# spanning-tree
Brocade-A(config-vlan-3)# vlan 4 name BLUE
FSX
IP Subnet1
IPX Net 1
Atalk 100.1
Zone “A”
IP Subnet2
IPX Net 2
Atalk 200.1
Zone “B”
IP Subnet3
IPX Net 3
Atalk 300.1
Zone “C”
IP Subnet4
IPX Net 4
Atalk 400.1
Zone “D”
Port17
Port18 Port19 Port20
= STP Blocked VLAN
VLAN 2
Port 1-4
IP Sub1
IPXnet1
AT 100
Zone A
VLAN 3
Port 5-8
IP Sub2
IPXnet2
AT 200
Zone B
VLAN 4
Port 9-12
IP Sub3
IPXnet3
AT 300
Zone C
VLAN 5
Port 13-16
IP Sub4
IPXnet4
AT 400
Zone D
VLAN 2
Port 1-4
IP Sub1
IPXnet1
AT 100
Zone A
VLAN 3
Port 5-8
IP Sub2
IPXnet2
AT 200
Zone B
VLAN 4
Port 9-12
IP Sub3
IPXnet3
AT 300
Zone C
VLAN 5
Port 13-16
IP Sub4
IPXnet4
AT 400
Zone D
VLAN 4
Port 9-12
IP Sub3
IPXnet3
AT 300
Zone C
VLAN 5
Port 13-16
IP Sub4
IPXnet4
AT 400
Zone D
ROOT BRIDGE
FOR
VLAN - BLUE
VLAN - RED
ROOT BRIDGE
FOR
VLAN - BROWN
VLAN - GREEN
VLAN 2
Port 1-4
IP Sub1
IPXnet1
AT 100
Zone A
VLAN 3
Port 5-8
IP Sub2
IPXnet2
AT 200
Zone B
FESX-A
FESX-B
FESX-C