Specifications

16-5

Conﬁguring and Managing SLIP Ports

Managing Internet Addresses for SLIP Hosts

Introduction

The Internet address for the SLIP host must be unique on the subnet and must

have the same subnet identiﬁer as the access server. A subnet identiﬁer is the

result of a logical AND operation on the Internet address and the subnet mask.

For example, assume that you set:

1. The access server Internet address as follows:

Local> CHANGE INTERNET ADDRESS 83.62.18.101

2. The subnet mask as follows:

Local> CHANGE INTERNET SUBNET MASK 255.255.255.0

In this situation, the subnet identiﬁer is 83.62.18.0.

In this example, the Internet address of the SLIP host must be 83.62.18.xx. The

value xx is any number between 1 and 254, except 101. The value 101 is the access

server Internet address.

How an Access Server Port Obtains the SLIP Host Internet Address

This section describes how an access server port obtains the SLIP host Internet

address. The SLIP host port address must be contained in the access server subnet

identiﬁer. You can assign an address or you can allow the access server to

automatically obtain the SLIP host address.

Assigning a Host Internet Address

To assign the Internet address to a port, use the SET/DEFINE/CHANGE PORT

SLIP HOST ADDRESS command as shown in the following example:

Local> CHANGE PORT SLIP HOST ADDRESS 195.1.1.101

After you assign the address, you can enter the SHOW PORT SLIP

CHARACTERISTICS command on the SLIP host to verify the change. You then

need to assign the address to the attached host.

RADIUS Speciﬁed SLIP Host Address

If a user performs a RADIUS authentication, the SLIP host IP address may be

speciﬁed in the user’s authorization data. A RADIUS speciﬁed address of

255.255.255.254 means the IP address of the port is used. An address of

255.255.255.255 means the PC client’s IP address is used (see below).