Brocade Communications Systems FastIron X Series User Manual

NOTE
If you congure the Brocade Layer 3 switch to use a loopback interface to communicate with a BGP4 neighbor, you also must
congure a loopback interface on the neighbor and congure the neighbor to use that loopback interface to communicate with
the Brocade Layer 3 switch. Refer to Assigning an IP address to a loopback interface.
To add a loopback interface, enter commands such as those shown in the following example.
device(config-bgp-router)# exit
device(config)# interface loopback 1
device(config-lbif-1)# ip address 10.0.0.1/24
Syntax: interface loopback num
The num parameter species the virtual interface number. You can specify from 1 to the maximum number of virtual interfaces
supported on the device. To display the maximum number of virtual interfaces supported on the device, enter the show default values
command. The maximum is listed in the System Parameters section, in the Current column of the virtual-interface row.
Assigning an IP address to a virtual interface
A virtual interface is a logical port associated with a Layer 3 Virtual LAN (VLAN)
congured on a Layer 3 switch. You can congure
routing parameters on the virtual interface to enable the Layer 3 switch to route protocol trac from one Layer 3 VLAN to the other,
without using an external router.
You can congure IP routing interface parameters on a virtual interface. This section describes how to congure an IP address on a
virtual interface. Other sections in this chapter that describe how to congure interface parameters also apply to virtual interfaces.
NOTE
The Layer 3 switch uses the lowest MAC address on the device (the MAC address of port 1 or 1/1/1) as the MAC address for
all ports within all virtual interfaces you congure on the device.
To add a virtual interface to a VLAN and congure an IP address on the interface, enter commands such as the following.
device(config)# vlan 2 name IP-Subnet_10.1.2.0/24
device(config-vlan-2)# untag ethernet 1 to 4
device(config-vlan-2)# router-interface ve 1
device(config-vlan-2)# interface ve 1
device(config-vif-1)# ip address 10.1.2.1/24
The
rst two commands in this example create a Layer 3 protocol-based VLAN name "IP-Subnet_10.1.2.0/24" and add a range of
untagged ports to the VLAN. The router-interface command creates virtual interface 1 as the routing interface for the VLAN.
Syntax: router-interface ve num
The num variable species the virtual interface number. You can enter a number from 1 through 4095.
When conguring virtual routing interfaces on a device, you can specify a number from 1 through 4095. However, the total number of
virtual routing interfaces that are congured must not exceed the system-max limit of 512 (or 255 for the ICX 6450 and ICX 7250). For
more information on the number of virtual routing interfaces supported, refer to "Allocating memory for more VLANs or virtual routing
interfaces" in the FastIron Ethernet Switch Platform and Layer 2 Switching Conguration Guide.
The last two commands change to the interface conguration level for the virtual interface and assign an IP address to the interface.
Syntax: interface ve num
Conguring IP parameters - Layer 3 switches
FastIron Ethernet Switch Layer 3 Routing
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Brocade Communications Systems FastIron X Series Specifications

General

Brand	Brocade Communications Systems
Model	FastIron X Series
Category	Switch
Language	English