Configuration Guide User guide

FastIron Configuration Guide 779
53-1002494-02
Routing between VLANs using virtual routing interfaces (Layer 3 switches only)
The next thing you need to do is create VLAN 3. This is very similar to the previous example with the
addition of virtual routing interfaces to the IP subnet and IPX network VLANs. Also there is no need
to exclude ports from the IP subnet and IPX network VLANs on the router.
Brocade-A(config-vif-2)# vlan 3 name IP_Sub_&_IPX_Net_VLAN
Brocade-A(config-vlan-3)# untagged ethernet 9 to 16
Brocade-A(config-vlan-3)# no spanning-tree
Brocade-A(config-vlan-3)# ip-subnet 1.1.1.0/24
Brocade-A(config-vlan-ip-subnet)# static ethernet 9 to 12
Brocade-A(config-vlan-ip-subnet)# router-interface ve3
Brocade-A(config-vlan-ip-subnet)# ipx-network 1 ethernet_802.3
Brocade-A(config-vlan-ipx-network)# static ethernet 13 to 16
Brocade-A(config-vlan-ipx-network)# router-interface ve4
Brocade-A(config-vlan-ipx-network)# other-proto name block-other-protocols
Brocade-A(config-vlan-other-proto)# exclude ethernet 9 to 16
Brocade-A(config-vlan-other-proto)# no dynamic
Brocade-A(config-vlan-other-proto)# interface ve 3
Brocade-A(config-vif-3)# ip addr 1.1.1.1/24
Brocade-A(config-vif-3)# ip ospf area 0.0.0.0
Now configure VLAN 4. Remember this is a flat segment that, in the previous example, obtained its
IP default gateway and IPX router services from an external FESX. In this example, FESX-A will
provide the routing services for VLAN 4. You also want to configure the STP priority for VLAN 4 to
make FESX-A the root bridge for this VLAN.
Brocade-A(config-vif-4)# vlan 4 name Bridged_ALL_Protocols
Brocade-A(config-vlan-4)# untagged ethernet 17 to 24
Brocade-A(config-vlan-4)# tagged ethernet 25 to 26
Brocade-A(config-vlan-4)# spanning-tree
Brocade-A(config-vlan-4)# spanning-tree priority 500
Brocade-A(config-vlan-4)# ipx network 3 ethernet_802.3
Brocade-A(config-vlan-ipx-network)# exit
Brocade-A(config-vlan-4)# router-interface ve5
Brocade-A(config-vlan-4)# interface ve5
Brocade-A(config-vif-5)# ip address 1.1.3.1/24
Brocade-A(config-vif-5)# ip ospf area 0.0.0.0
It is time to configure a separate port-based VLAN for each of the routed backbone ports (Ethernet
25 and 26).
If you do not create a separate tagged port-based VLAN for each point-to-point backbone link, you
need to include tagged interfaces for Ethernet 25 and 26 within VLANs 2, 3, and 8. This type of
configuration makes the entire backbone a single STP domain for each VLAN 2, 3, and 8. This is
the configuration used in the example in “Configuring IP subnet, IPX network and protocol-based
VLANs” on page 770. In this scenario, the virtual routing interfaces within port-based VLANs 2, 3,
and 8 will be accessible using only one path through the network. The path that is blocked by STP is
not available to the routing protocols until it is in the STP FORWARDING state.
Brocade-A(config-vif-5)# vlan 5 name Rtr_BB_to_Bldg.2
Brocade-A(config-vlan-5)# tagged ethernet 25
Brocade-A(config-vlan-5)# no spanning-tree
Brocade-A(config-vlan-5)# router-interface ve6
Brocade-A(config-vlan-5)# vlan 6 name Rtr_BB_to_Bldg.3
Brocade-A(config-vlan-6)# tagged ethernet 26
Brocade-A(config-vlan-6)# no spanning-tree
Brocade-A(config-vlan-6)# ipx-network 4 ethernet_802.3