Chapter 12: AI2524 X.25 Configuration Steps

Specify a CMNS Static Map of Addresses

After enabling CMNS on a nonserial interface (or specifying X.25 en- capsulation on a serial interface), you must map NSAP addresses to ei- ther MAC-layer addresses or X.121 addresses, depending on th application.

For CMNS support over dedicated serial links (such as leased lines), an X.121 address is not needed, but can be included. You must specify the X.121 address for CMNS connections over a packet-switched net- work, and you must specify a MAC address for CMNS connections over a nonserial medium (Ethernet, FDDI, or Token Ring).

To map the NSAP addresses to either a MAC address or X.121 ad dress, perform one of these tasks in interface configuration mode:

zStatically map an NSAP address to a nonserial MAC-layer ad- dress.

x25 map cmns nsap mac-address

zStatically map an NSAP address to X.25, with an optional X.121 destination address.

x25 map cmns nsap x121-address

Example: CMNS Configured for X.121 and MAC Addresses

This example illustrates enabling CMNS and configuring X.121 and

MAC address mappings. Map NSAP to MAC-address on Ethernet0:

interface ethernet 0 cmns enable

x25 map cmns 38.8261.1000.0150.1000.17 0000.0c00.ff89

Map NSAP to X.121-address on Serial0 assuming the link is over

PDN:

interface serial 0 encapsulation x25

x25 map cmns 38.8261.1000.0150.1000.18 3110451

Specify cmns support for Serial1 assuming that the link is over leased line:

August 1997

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2524UM

 

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AIS AI2524 user manual Example Cmns Configured for X.121 and MAC Addresses, X25 map cmns nsap mac-address