Enterasys Networks CSX5500, CSX6000, CSX7000 manual Timers

CONFIGURING ALTERNATE ACCESSES

X.25 Accesses

X.25 ACCESS CONFIGURATION ELEMENTS

The X.25 Access configuration elements are divided into seven different categories:

•X.25 Logical Channel Assignments

•X.25 Timer Configuration

•X.25 Reliability, Windows, and Acknowledgment Facilities

•X.25 Quality-of-Service Facilities

•X-25 Charging -Related Facilities

•X-25 Restriction Facilities

•X.25 Miscellaneous Facilities

Each category has multiple configuration elements that must be entered.

Note: If you are unsure of any of the configuration values, use the default values where provided.

X.25 LOGICAL CHANNEL ASSIGNMENTS

The maximum number of permanent virtual circuits (PVCs) and switched virtual circuits (SVCs) to be supported. For X.25 over B-channel, a total of 48 virtual circuits are supported; over D-channel 8 virtual circuits are supported. Therefore, the total number of PVCs and SVCs combined cannot exceed the maximum number of VCs. X.25 logical channel numbers are assigned to each PVC, and each two-way SVC. (Currently, one-way incoming and one-way outgoing SVCs are not supported.)

MAXIMUM NUMBER OF PVCS

The maximum number of PVCs supported for this X.25 access.

MAXIMUM NUMBER OF SVCS

The maximum number of SVCs supported for this X.25 access.

X.25 TIMERS

Your PPSN provider should be able to provide you with the optimum values for the X.25 timers. If you are unable to obtain these values, select the default values. The default values are acceptable for the majority of network configurations.

TIMER T20

This timer designates the time limit in which a restart confirmation must be returned by the DCE (the PPSN) after a restart request has been issued by the DTE (the CyberSWITCH). The range for the this timer is 1 to 200 seconds. The default for this timer is 180 seconds.

TIMER T21

This timer designates the time limit in which a call connected response must be returned by the DCE (the PPSN) after a call request has been issued by the DTE (the CyberSWITCH). The range for the this timer is 1 to 200 seconds. The default for this timer is 200 seconds.

TIMER T22

This timer designates the time limit in which a reset confirmation must be returned by the DCE (the PPSN) after a reset request has been issued by the DTE (the CyberSWITCH). The range for the this timer is 1 to 200 seconds. The default for this timer is 180 seconds.

TIMER T23

This timer designates the time limit in which a clear confirmation must be returned by the DCE (the PPSN) after a clear request has been issued by the DTE (the CyberSWITCH). The range for the this timer is 1 to 200 seconds. The default for this timer is 180 seconds.

Central Site Remote Access Switch 249