Cabletron Systems 1800 - Manual (Page 105)

Configuring X.25 8-13
After making any changes, be sure to press [F7] to update the
system memory. Otherwise, the changes will not take effect until
the next re-boot of the SmartSwitch 1800.
There are four Logical Port screens. Selecting the entry X.25 Logical Port - Screen "n"
at each of the first three screens will display the next screen, and pressing [F3] will
display the previous screen.
Any menu items preceded by asterisks instead of letters cannot be changed. These are
displayed only because the software code for the menu is shared with physical port
configuration.
If you want to configure one or more closed user groups (CUGs) for the port, press [N]
at the third screen. (Otherwise, you do not need to configure anything on the fourth
screen.)
Logical Port Parameters
Table 8-2 Logical Port Parameters
Parameter Valid Values Default Value
Mapped DLCI Num ber 16–991 16
Bl ocked Port Flag Y/ N N
Priority 0–9 0
Bandw idth Al location G roup 1–16 0 1
Encapsulation Method RFC1490, AnnexG RFC1490
Modulo 0 (8) or 1 (128) 0 (Modulo 8)
Maximum LAPB Window Size 1–7 or 1–127 2 7
N2 Retransmit Count 0–20 20
T1 Retransmit Period
(msec)
2000–15,000 3000
T2 Wait Ack Period (msec) 0–5000 1000
T3 Link Al ive Period (sec)
1–60 5
Logical DCE Y/ N Y
Low est/Highest Incomi ng Channel 0–4095 3 see explanation
Low est/Highest Two-Way Channel 0–4095 3 see explanation
Low est/Highest Outgoi ng Channel 0–4095 3 see explanation
Fl ow Control Negotiation Y/ N N
Throughput Cl ass Negotiation Y/ N N
Local Charging Prevention Y/ N N
Reverse Charge Acceptance Y/ N N
Fast Select Acceptance Y/ N N
Incoming Cal ls Barred Y/ N N
Outgoing Cal ls Barred Y/ N N
Maximum Packet Size 128–4096 4 1024
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