Foundry Networks Switch and Router User Manual

Configuring Virtual LANs (VLANs)
December 2000 25 - 45
The router-interface-group command enables a VLAN group to use a virtual interface group. Enter this
command at the configuration level for the VLAN group. This command configures the VLAN group to use the
virtual interface group that has the same ID as the VLAN group. You can enter this command when you configure
the VLAN group for the first time or later, after you have added tagged ports to the VLAN and so on.
The <num> parameter in the interface group-ve <num> command specifies the ID of the VLAN group with which
you want to associate this virtual interface group. The VLAN group must already be configured and enabled to
use a virtual interface group. The software automatically associates the virtual interface group with the VLAN
group that has the same ID. You can associate a virtual interface group only with the VLAN group that has the
same ID.
The syntax and usage for the ip address command is the same as when you use the command at the interface
level to add an IP interface.
USING THE WEB MANAGEMENT INTERFACE
You cannot configure this feature using the Web management interface.
Displaying the VLAN Group and Virtual Interface Group Information
To verify configuration of VLAN groups and virtual interface groups, display the running-config file. If you have
saved the configuration to the startup-config file, you also can verify the configuration by displaying the startup-
config file. The following example shows the running-config information for the VLAN group and virtual interface
group configured in the previous examples. The information appears in the same way in the startup-config file.
BigIron(config)# show running-config
lines not related to the VLAN group omitted...
vlan-group 1 vlan 2 to 900
add-vlan 1001 to 1002
tagged ethe 1/1 to 1/2
router-interface-group
lines not related to the virtual interface group omitted...
interface group-ve 1
ip address 10.10.10.1 255.255.255.0
NOTE: If you have enabled display of sub-net masks in CIDR notation, the IP address information is shown as
follows: 10.10.10.1/24.
Allocating Memory for More VLANs or Virtual Interfaces
NetIron Internet Backbone routers, and BigIron Layer 3 Switches and Layer 2 Switches with Management II or
higher modules support up to 4095 VLANs and 4095 virtual interfaces.
The number of VLANs and virtual interfaces supported depends on the amount of DRAM memory on the
management module. Table 25.1 lists the default and configurable maximum number of VLANs for Management
II and higher modules.
Table 25.1: VLAN and Virtual Interface Support
Product Default
Maximum
Configurable
Maximum
NetIron Internet Backbone router
with 512MB management module (Management IV
module)
255 4095

Foundry Networks Switch and Router Specifications

General

Brand	Foundry Networks
Model	Switch and Router
Category	Switch
Language	English