Cabletron Systems Netlink FRX4000, Руководство пользователя

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Configuring X.25 8-7
1
Non-T1/E1 port only; the speed is pre-determined on a T1 or E1 port.
2
1–7
if Modulo 8,
1–127
if Modulo 128.
3
This parameter is relevant only if
Physical Port Interface
is something other than
RS-
232 and Generate Clock is Y .
4
0 means the parameter is not used.
5
If SDLC-LLC2 conversion is configured over the port,
Fast Select Acceptance
must be
Y
. Also, if the X.25 link is to an X.25 network, the network must support Fast Select as
well as call user data greater than 32 bytes.
Port Type
defines the protocol the port will support. Selecting this parameter will display a list
of valid protocols. An FRX4000 port can be configured as any WAN protocol loaded
in the device. An FRX6000 port can be configured as any WAN protocol configured
on this port's RLP. (Protocol configuration is described in
Chapter 5 .)
Logical DCE Y/N Y
Generate Clock Y/N Y
Rcv Clock (TT) from DTE
3
Y/N N
CSU/DSU Operating Mode Normal, LDM Normal
RTS Control Constant, External Constant
Lowest/Highest Incoming Channel 0–4095
4
see explanation
Lowest/Highest Two-Way Channel 0–4095
4
see explanation
Lowest/Highest Outgoing Channel 0–4095
4
see explanation
Flow Control Negotiation Y/N N
Throughput Class Negotiation Y/N N
Local Charging Prevention Y/N N
Reverse Charge Acceptance Y/N N
Fast Select Acceptance Y/N
5
N
Incoming Calls Barred Y/N N
Outgoing Calls Barred Y/N N
Mask Link Alarms Y/N N
Maximum Packet Size 128–4096 1024
Default Packet Size 16–4096 128
Maximum Window Size 1–7 7
Default Window Size 1–7 2
Maximum Throughput Class
see explanation none
Default Calling Address
0–15 characters none
T20 Restart Timer
(sec)
1–600 60
T21 Incoming Call Timer
(sec)
1–600 180
T22 Reset Timer
(sec)
1–600 60
T23 Clear Timer
(sec)
1–600 60
DTE Restart Retry Countt 0–99 0
DTE Reset Retry Count 0–99 0
DTE Clear Retry Count 0–99 0
Table 8-1 Physical X.25 Port Parameters
Parameter Valid Values Default Value
(continued)