Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 382)

FIGURE 84 Routing between protocol-based VLANs
To configure the Layer 3 VLANs and virtual routing interfaces on the FSX Layer 3 Switch in the above
figure, use the following procedure.
Configuring Layer 3 VLANs and virtual routing interfaces on the FSX-A
Enter the following commands to configure FSX-A. The following commands enable OSPF or RIP
routing.
device>en
No password has been assigned yet...
device# configure terminal
device(config)# hostname FSX-A
device-A(config)# router ospf
device-A(config-ospf-router)# area 0.0.0.0 normal
Please save configuration to flash and reboot.
device-A(config-ospf-router)#
The following commands create the port-based VLAN 2. In the previous example, an external FSX
defined the router interfaces for VLAN 2. With ISR, routing for VLAN 2 is done locally within each FSX.
Therefore, there are two ways you can solve this problem. One way is to create a unique IP subnet
and IPX network VLAN, each with its own virtual routing interface and unique IP or IPX address within
VLAN 2 on each FSX. In this example, this is the configuration used for VLAN 3. The second way is to
split VLAN 2 into two separate port-based VLANs and create a virtual router interface within each port-
based VLAN. Later in this example, this second option is used to create a port-based VLAN 8 to show
that there are multiple ways to accomplish the same task with ISR.
You also need to create the Other-Protocol VLAN within port-based VLAN 2 and 8 to prevent
unwanted protocols from being Layer 2 switched within port-based VLAN 2 or 8. Note that the only
port-based VLAN that requires STP in this example is VLAN 4. You will need to configure the rest of
the network to prevent the need to run STP.
device-A(config-ospf-router)# vlan 2 name IP-Subnet_10.1.2.0/24
device-A(config-vlan-2)# untagged ethernet 1 to 4
device-A(config-vlan-2)# no spanning-tree
device-A(config-vlan-2)# router-interface ve1
device-A(config-vlan-2)# other-proto name block_other_protocols
Configuring Layer 3 VLANs and virtual routing interfaces on the FSX-A
382 FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide
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