User Manual

Enterasys X-Pedition User Reference Manual 139
Configuring IP Interfaces and Parameters
Configuring IP Interfaces to Ports
You can configure an IP interface directly to a physical port. Each port can be assigned multiple IP
addresses representing multiple subnets connected to the physical port. For example, to assign an
IP interface ‘RED’ to physical port et.3.4, enter the following:
To configure a secondary address of 10.23.4.36 with a 24-bit netmask (255.255.255.0) on the IP
interface int4:
Configuring IP Interfaces for a VLAN
You can configure one IP interface per VLAN. Once an IP interface has been assigned to a VLAN,
you can add a secondary IP address to the VLAN. To create a VLAN called IP3, add ports et.3.1
through et.3.4 to the VLAN, then create an IP interface on the VLAN:
To configure a secondary address of 10.23.4.36 with a 24-bit netmask (255.255.255.0) on the IP
interface int4:
Note: If you configure a SmartTRUNK to carry traffic for an IP VLAN and traffic for the
Layer-2 default VLAN, you must configure the SmartTRUNK as an 802.1Q trunk. With
the trunk configured, disable and re-enable the SmartTRUNK.
Specifying Ethernet Encapsulation Method
The Enterasys X-Pedition supports two encapsulation types for IP. Use the interface create ip
command to configure one of the following encapsulation types on a per-interface basis:
Ethernet II: The standard ARPA Ethernet Version 2.0 encapsulation, which uses a 16-bit
protocol type code (the default encapsulation method).
802.3 SNAP: SNAP IEEE 802.3 encapsulation, in which the type code becomes the frame
length for the IEEE 802.2 LLC encapsulation (destination and source Service Access Points,
and a control byte).
xp(config)# interface create ip RED address-netmask 10.50.0.0/255.255.0.0 port et.3.4
xp(config)# interface add ip int4 address-mask 10.23.4.36/24
xp(config)# vlan create IP3 ip
xp(config)# vlan add ports et.3.1-4 to IP3
xp(config)# interface create ip int3 address-mask 10.20.3.42/24 vlan IP3
xp(config)# interface add ip int3 address-mask 10.23.4.36/24 vlan IP3