User guide

Chapter 4 - RouteFinder Software

MTASR3

Frame Relay Setup

This dialog box displays the Management Type, the details for that management type, and the

number of active DLCIs. When it is connected to an active frame relay service, the RouteFinder can

detect the Management Type and any available DLCIs. Therefore, it is important not to change any

frame relay parameters, and when adding new DLCIs you must be sure they agree with the way your

frame relay service is provisioned.

In the Frame Relay Setup dialog box, you can change the Management Type by choosing one of the

three options; when you do this, the set of detail parameters for that particular option is displayed in

the group of the same name. For example, Annex D is selected on the dialog box (above), and the

associated parameters are displayed in the Annex D group.

The RouteFinder automatically detects the network’s management type and obtains a list of active

DLCIs at power-up, or when the network becomes active in a process that takes 1 to 2 minutes.

Occasionally, the Management Type parameters can be changed to correct a problem. Following are

suggested changes that may alleviate a given problem:

1. Change the Link Integrity Verification Timer. this feature sets how often the RouteFinder

verifies that the link is good. Changing this setting from the default value of 10 seconds to a lower

value (e.g., 5 seconds) increases the frequency of these verifications.

2. Change the Full Status Enquiry Interval to affect how often the DLCI Status is updated. This

parameter defines how often the RouteFinder requests DLCI status information along with the

Link Integrity Verification request. The default value specifies such a request every sixth time the

link integrity is checked. A value less than 6 will enable faster detection of active/inactive DLCIs

but will also produce a slight increase in management overhead.

3. Change the Monitored Events Count and the Error Threshold to affect the Routefinder’s

sensitivity to errors on the link. Each management frame received by the RouteFinder is

considered to be an “event,” and if the link integrity sequence numbers are wrong, for example, it

is considered to be an “errored” event. With the default settings, if Error Threshold is 3 and the

Monitored Events count is 4, and 3 of 4 events are “errored,” then the link is considered to be bad

and the RouteFinder stops sending on all DLCIs and restarts the initial procedures to activate the

link.

If you click the DLCI button, the Frame Relay DLCI dialog box is displayed.