Cabletron Systems 9032578-05 manual Configuring IP Interfaces to Ports

Chapter 8: IP Routing Configuration Guide

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:

ssr(config)# interface create ip RED address-netmask 10.50.0.0/255.255.0.0 port et.3.4

To configure a secondary address of 10.23.4.36 with a 24-bit netmask (255.255.255.0) on the IP interface int4:

ssr(config)# interface add ip int4 address-mask 10.23.4.36/24

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:

ssr(config)# vlan create IP3 ip

ssr(config)# vlan add ports et.3.1-4 to IP3

ssr(config)# interface create ip int3 address-mask 10.20.3.42/24 vlan IP3

To configure a secondary address of 10.23.4.36 with a 24-bit netmask (255.255.255.0) on the IP interface int4:

ssr(config)# interface add ip int3 address-mask 10.23.4.36/24 vlan IP3

Specifying Ethernet Encapsulation Method

The SmartSwitch Router 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).

SmartSwitch Router User Reference Manual 79