3Com 3031 Command Reference Manual page 375

3com 3031: reference guide

Hide thumbs Also See for 3031:

Table of Contents

threshold in out: When the address mapping is used to originate a call, it

negotiates throughput with the peer end. The values of in/out are defined to

be 75, 150, 300, 600, 1200, 2400, 4800, 9600, 19200, and 48000.

vc-per-map count: Maximum number of VCs associated with the address

window-size input-window-size output-window-size: When the address

mapping is used to originate a call, it negotiates the window size with the peer

end. The values of input-window-size and output-window-size range between

1 and the number that is 1 less than the modulus of the X.25 interface where

the address mapping exists (including 1 and modulus minus 1).

For the related commands, see display x25 map, x25 reverse-charge-accept, x25

call-facility, x25 timer idle, and x25 vc-per-map.

Set two address mappings on the X.25 interfaces Serial0/0/0 and Serial1/0/0,

respectively, and the four address mappings have different attributes.

[3Com] interface serial 0/0/0

[3Com-Serial0/0/0] x25 map ip 202.38.160.11 x121-address 20112451

reverse-charge-request reverse-charge-accept

[3Com-Serial0/0/0] x25 map ip 202.38.160.138 x121-address 20112450

packet-size 512 512 idle-timer 10

[3Com] interface serial1/0/0

[3Com-Serial1/0/0] x25 map ip 20.30.4.1 x121-address 25112451

window-size 4 4 broadcast

[3Com-Serial0/0/0] x25 map ip 20.30.4.8 x121-address 25112450

x25 modulo modulus

undo x25 modulo

Interface view

modulus: Modulus, whose value is 8 or 128.

Using the x25 modulo command, you can set the window modulus of an X.25

interface. Using the undo x25 modulo command, you can restore its default

window modulus.

By default, the window modulus of X.25 interface is modulus 8 mode.

The slip window is the basis for X.25 traffic control, and the key about the slip

window is that the sent packets are numbered cyclically in order and are to be

acknowledged by the peer end. The order in numbering refers to the ascending

LAPB and X.25 Configuration Commands