Configuring and Managing SLIP Ports 15-5
Managing Internet Addresses for SLIP Hosts
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).
