Avocent Access Router Cyclades-PR2000 - Manual (Page 63)

Cyclades-PR2000
63 Chapter 8 - Data-Link Protocols (Encapsulation)
STEP TWO
The next step is to create a static routing table associating each remote X.121 address with an IP address or a
TCP Socket location. This is done in the Add DTE menu, which appears at the end of the X.25 parameter list. It
can be reached by passing through all X.25 parameters or by using the <ESC> key at any point in the parameter
list.
X.25 Add DTE Menu CONFIG=>INTERFACE=><LINK>=>ENCAPSULATION =>X.25=> <ESC>=>Add DTE
Parameter Description
Type of Logical Address IP Address or TCP Socket. Users that intend to use the TCP Socket option should
see the CyROS Reference Guide.
IP Address Applies for IP Address Type. IP Address of remote DTE device.
X.121(DTE) Address Address of remote DTE device.
VC Number Number assigned to this circuit, if it is a PVC. For SVCs, the value should be zero.
Enable Predictor
Compression Applies for IP Address Type. Enables data compression using the Predictor
algorithm. This feature should be enabled only if Cyclades' equipment is being used
on both ends of the connection because there is no established standard for data
compression interoperability. Data compression is very CPU-intensive, making this
feature effective only for links running at speeds under 1Mbps. At higher speeds,
the time necessary to compress data offsets the gains in throughput achieved by
data compression.
Number of Bits for
Compression Applies when Predictor Compression Enabled. Sixteen is fastest, but 10 must be
used if the router on the other end is a Cyclades PathRouter, for compatibility.
X.25 with PAD (Packet Assembler/Disassembler)
PAD acts as a protocol converter, allowing a user to access the packet-switched network via a serial terminal.
This asynchronous connection is then converted into synchronous communication with the router and the network
beyond (using the telnet application available in the router). Please see the CyROS Reference Guide for information
about this Encapsulation option.