AIS Router AI2524 Manual do Utilizador descarregar pdf (Página 263)

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Chapter 12: AI2524 X.25 Configuration Steps

August 1997 Page 12-5

2524UM

x25 lic 5

x25 hic 20

x25 ltc 25

Set the Packet Numbering Modulo

The AI2524 implementation of X.25 supports both modulo 8 and mod-

ulo 128 packet sequence numbering; module 8 is the default.

In interface configuration mode, set the packet numbering modulo:

x25 modulo {8 | 128}

Note: Because the X.25 protocol requires the DTE and DCE to

have identical modulos, changes you make to the modulo

when the interface is up are held until the X.25 protocol

restarts the packet service.

The X.25 modulo and the LAPB modulo are distinct and serve differ-

ent purposes. LAPB modulo 128 (or extended mode) can be used to

achieve higher throughput across the DTE or DCE interface; it affects

only the local point of attachment. X.25 Packet-Level Protocol (PLP)

modulo 128 can be used to achieve higher end-to-end throughput for

virtual circuits by allowing more data packets to be in transit through

the X.25 network.

Set the X.121 Address

If your router does not originate or terminate calls but only participates

in X.25 switching, this task is optional. However, if the router is at

tached to a PDN, you must set the interface X.121 address assigned by

the X.25 network service provider.

In interface configuration mode, set the X.121 address:

x25

address x121-address

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