Nortel BCM 3.7, Manual

Page: 177 / 1004

Universal T1 WAN (UTWAN) 177
Programming Operations Guide
Configuring the UTWAN to use a Frame Relay link
Configuring the UTWAN to use a Frame Relay link consists of the following:
• “Configuring the UTWAN Summary parameters” on page 175
• “Configuring the Frame Relay parameters” on page 177
• “Configuring the PVC Configuration parameters” on page 179
Configuring the Frame Relay parameters
To set the UTWAN Frame Relay Parameters.
1
On the navigation tree, click the Resources key and click the UTWAN key.
2 Click the UTWAN1 heading.
The Summary screen appears.
3 Click the Frame Relay Parameters tab.
The Frame Relay Parameters screen appears.
4 Configure the Frame Relay Parameters by referring to the following table.
Table 22 UTWAN frame relay parameters
Attribute Description
LMI Type Select the type of local management protocol used on this link. The link management type
must be the same as the one used by the frame relay service provider. The available
options are
Original LMI, ANSI T1.617 Annex D or ITU-T Q.933 Annex A .
The default setting is ANSI T1.617 Annex D .
Note: The most commonly used setting for this parameter is ANSI T1.617 Annex D .
Polling Interval Enter an interval, in seconds, between Status Enquiry messages.
Possible values are between 1 and 100 seconds.
The default setting is 6 .
Missing Status Enquiry Enter the maximum number of consecutive failures permitted in the Status Enquiry before
dropping the link. It is also the number of successful consecutive Status Enquiry messages
that must be received before marking a link as operational.
If you have a backup WAN connection and Net Link Manager configured, the backup
connection is started and traffic is routed to the backup when this link is dropped. Also, the
backup WAN connection is dropped and traffic is routed to this link when the link is
operational. For information about Net Link Manager, refer to
“Configuring Net Link
Manager” on page 733 .
Possible values are between 1 and 100 messages.
The default setting is 3 .
Expected Status Enquiry Enter the number of events sampled for making decisions about the Missing Status
Enquiry. This value must be set to a higher number than the value set in the Missing
Status Enquiry box.
Possible values are between 1 and 100 messages.
The default setting is 6 .
LMI Polling Interval Enter an interval, in seconds, between LMI status inquiry messages. The polling interval
must be the same as the one used by the frame relay service provider’s switch.
Possible values are between 1 and 100 seconds.
The default setting is 10 .