Cabletron Systems SPECTRUM 1800 User Manual page 128

SNA Status and Configuration
Possible line speed entries are:
If you enter a value that is within the valid range but not equal to one of the
values listed above, the speed will be rounded up. If an RS-232 DCE port is
directly connected to the DTE via the standard Cabletron cable, the maximum
supported speed is 64000. If longer cabling is used, the maximum speed is 19200.
MAX Retries
This is the maximum number of times the port will attempt to send a frame if the
physical unit (PU) is not responding. A larger value increases the probability of an
eventual correct transfer between DTE and DCE, but a smaller value permits
faster detection of a permanent error condition. The default value for this
parameter is 5.
Inactivity Timer
This parameter is only relevant if PAD Type (see below) is HPAD. It is the amount
of time (in seconds) that the FRX will wait with no activity on the port before it
declares the port is down. The default value for this parameter is 50.
Physical Port Interface
The physical port interface is deÞned by the portÕs connector and cabling type,
and must be conÞgured as follows:
¥
If you have installed the optional CSU/DSU card on an FRX4000 or SmartSwitch 1800,
it will logically take port 1, and you must conÞgure certain CSU/DSU parameters
NOTE
through console management. Refer to your FRX or SmartSwitch 1800 hardware
documentation for more information.
¥
7-4
75
150
300 112000
600 128000
1200 168000
2400 192000
4800 224000
9600 256000
14400 280000
19200 320000
24000 336000
28800 384000
38400 392000
48000 448000
56000 504000
For the FRX4000 and SmartSwitch 1800, port 0 and port 1 are always RS-232;
For the FRX4000, ports 2 and 3 are determined by the attached cables: RS-232,
V.35, RS-449, or X.21;
64000 512000
72000 560000
576000
616000
640000
672000
704000
728000
768000
784000
832000
840000
896000
952000
960000
1008000 1472000
1024000 1512000
1064000 1536000
1088000 1568000
1120000 1600000
1152000 1624000
1176000 1664000
1216000 1668000
1232000 1728000
1280000 1792000
1288000 1856000
1344000 1920000
1400000 1984000
1408000 2048000
1456000
Configuring SNA Ports