User`s guide

MultiVoice Gateway for the MAX— User’s Guide Preliminary November 23, 1998 8-1

Configuring IP Routing

Introduction to IP routing and interfaces

The first task described in this chapter, setting up the IP network, involve setting parameters in

the MultiVoice Gateway for the MAX Ethernet profile. The parameters define the unit’s

Ethernet IP interface, network services (such as DNS), and routing policies.

For configuring IP routes and preferences and configuring the MultiVoice Gateway for

dynamic route updates, you configure the Static Routes profile to set up the IP routing table,

which determines the paths over which IP packets are forwarded.

To perform the tasks described in this chapter, you have to understand how the MultiVoice

Gateway uses IP addresses and subnet masks, IP routes, and IP interfaces.

IP addresses and subnet masks

In the MultiVoice Gateway, you specify IP addresses in dotted decimal format. If you specify

no subnet mask, the MultiVoice Gateway assumes that the address contains the default number

of network bits for its class. In other words, in Table 8-1, the number of network bits for each

class corresponds to the default subnet mask for that class.

Introduction to IP routing and interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Configuring the local IP network setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Configuring IP routes and preferences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16

Configuring the MultiVoice Gateway for dynamic route updates . . . . . . . . . . . . . . . . 8-20

Managing IP routes and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22

Table 8-1. IP address classes and number of network bits

Class Address range Network bits

Class A 0.0.0.0 — 127.255.255.255 8

Class B 128.0.0.0 — 191.255.255.255 16

Class C 192.0.0.0 — 223.255.255.255 24