Brocade TurboIron 24X Series Configuration Guide - Manual (Page 426)

392 Brocade TurboIron 24X Series Configuration Guide
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Configuring the same IP subnet address on multiple port-based VLANs
Configuring the same IP subnet address on multiple
port-based VLANs
For a device to route between port-based VLANs, you must add a virtual routing interface to each
VLAN. Generally, you also configure a unique IP subnet address on each virtual routing interface.
For example, if you have three port-based VLANs, you add a virtual routing interface to each VLAN,
then add a separate IP subnet address to each virtual routing interface. The IP address on each of
the virtual routing interfaces must be in a separate subnet. The device routes Layer 3 traffic
between the subnets using the subnet addresses.
NOTE
This feature applies only to Layer 3 Switches.
NOTE
Before using the method described in this section, refer to “Configuring VLAN groups and virtual
routing interface groups” on page 395. You might be able to achieve the results you want using the
methods in that section instead.
Figure 46 shows an example of this type of configuration.
FIGURE 46 Multiple port-based VLANs with separate protocol addresses
As shown in this example, each VLAN has a separate IP subnet address. If you need to conserve IP
subnet addresses, you can configure multiple VLANs with the same IP subnet address, as shown in
Figure 47 .
VLAN 2
VLAN 3
VLAN 4
VLAN 2
VE 1
-IP 10.0.0.1/24 VLAN 3
VE 2
-IP 10.0.1.1/24
VLAN 4
VE 3
-IP 10.0.2.1/24
Switch