Multiple IP Subnetworks

IP Address Assignment by the LCS60

PPPand SLIP users need to be assigned an IP address when they connect to the LCS60, thereby allowing them to run TCP/IP applications over their serial con- nection. Figure 1-5 describes IP address assignment; refer to Chapter 4 (PPP) or Chapter 5 (SLIP) for more information.

Note: IP address assignment is defined in RFC1332.

The LCS60 has three mechanisms for assigning a SLIP or PPP user an IP address:

1. Privately Administered Static IP Address. The user's IP address is locally administered by the user on his/her PC software package. The LCS60 will use the IP address requested by the PC package if it is valid and unused.

2. Reserved IP Address. This IP address, administered by the LCS60 adminis- trator, is requested by specifying a zero IP address on the client software package. A reserved IP address must exist in the LCS60 configuration database before the session start up attempt.

3. Dynamically Assigned IP Address. This IP address is randomly assigned by the LCS60 from the IP network range associated with the particular IP Network Security Group. A dynamic address may be requested on the dialstring if no reserved IP address exists for a user ID.

Features

Hardware Features

Enhanced Processor

The LCS60 offers the enhanced Motorola MVME197 processor, rated at 100+ MIPS. With this processor, the LCS60 can sustain a higher number of sessions at a greater aggregate throughput than its LCS50E predecessor.

Issue 3

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