Avocent Cyclades-PR2000 X.25 with PAD Packet Assembler/Disassembler, Parameter, Description

Cyclades-PR2000

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	Applies for IP Address Type. Enables data compression using the Predictor
Compression	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	Applies when Predictor Compression Enabled. Sixteen is fastest, but 10 must be
Compression	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.

Chapter 8 - Data-Link Protocols (Encapsulation) 63