Appendix B. Communication Line Processor Characteristics And Line Weights; Characteristics Of The Clps; Communication Line Processor Connectivity - IBM 3745 Connection And Integration Manual

Appendix B. Communication Line Processor Characteristics
and Line Weights
This appendix explains:

Characteristics of the CLPs

The communication lines can operate in half- or full-duplex mode and use the
SDLC, PPP, Frame-relay, or X.25 line protocol, but not BSC and asynchronous
(start-stop) line protocols. The primary access to Euro-ISDN via LIC 16 uses
Frame-relay framing.
Note: ISDN connections are not supported by the 3746 network node nor the
The communication line adapters support:
The 3746-900 does not support the ITU-T X.21 switched lines.
If necessary, adapters configured in the 3745 can compliment the 3746-900
configuration to provide support for:

Communication Line Processor Connectivity

The maximum physical connectivity of one CLP can be either:
The CLP connects up to four line interface couplers (LICs) in any mix.
 Copyright IBM Corp. 1988, 2003
The communication line processor (CLP) characteristics (interfaces and
connectivity)
The standard line weights and the associated assumptions about the traffic and
lines
How the 3746 configurator, CF3745, assigns communication lines to CLPs
using these line weights.
3746 IP router. They are supported by the 3746-900 with the necessary
programming support: NCP for SNA and CNN controlled traffic for APPN.
V.24 leased and switched lines (600 bps up to 28.8 kbps)
V.35 leased lines (56 kpbs up to 2.048 mbps)
X.21 leased lines (600 bps up to 2.048 mbps)
V.25 bis protocol over V.24 switched lines.
BSC lines
Asynchronous (start-stop) lines
Low speed X.21 switched lines
Emulation Program (EP).
4 high-speed lines up to 2 mbps
32 medium-speed lines up to 256 kbps
120 medium- and low-speed lines up to 64 kbps being either:
– (V35/X.21) line interfaces
– (V24) line interfaces
B-1