Enterasys csx400 用户指南

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页码 194
WAN Configuration
2-12
Local Management User’s Guide
Frame Relay as the Protocol Manager
 for the following parameters displayed for FR.
FR LMI (Selectable) 
Frame Relay Link Management Interface. Selectable states are based on 
the applicable RFC selections. The applicable switch type is chosen based on the switch type used 
by the Service Provider. The choices are: No LMI, T1.617-D, Q.933-A, and ANSI_94. The 
NO LMI setting is for specialized applications in which no Frame Relay Link Management is 
available or required.
DLCI Address (Modifiable) 
Data Link Connection Identifier given by the Service Provider. It 
is the PVC mapped index number of the connection identifier. The Telco switch assigns a virtual 
port to each DLCI. Can be set to values from 0-1023, depending on the protocol, when available 
for modification with certain protocol modes. The values 0-15 and 1008-1022 are reserved DLCI 
addresses. When using FR PtoMP as the Protocol Manager, the HSIM or CyberSWITCH can learn 
the DLCIs dynamically from the switch.
DLCI DCP En (
Toggle
The Data Compression Protocol (DCP) can be enabled or disabled in 
this field, on an application port per application port basis, when available. The DLCI port must be 
entered to change compression. Use the SPACE bar to toggle the field and ENTER to select either 
On or Off.
DLCI DCP Stat (
Read-Only
Displays the current negotiated status of compression.
Comp Ratio (
Read-Only
Displays the Compression Ratio, which is the ratio of 
uncompressed to compressed data.
Circuit State (Selectable) 
The field initially displays the state of the DLCI circuit, and can be 
modified. Steps through Active, Inactive and Invalid. 
NOTE
In FR PToMP mode, DLCI’s can be learned dynamically and do not need to be 
entered in the screen. Once a DLCI is entered, it becomes a “statically” entered DLCI. 
To remove a statically-entered DLCI, enter the IF# of the DLCI (see the Interface 
Screen), then enter “Invalid” into the Circuit State field, and then SAVE the changes.