Lucent Technologies CBX 3500 Configuration Manual page 188

Configuring ATM Logical Ports on Frame-based Modules
Defining ATM Network Interworking for Frame Relay NNI Logical Ports
Table 4-18. Add Logical Port: Link Management Tab Fields (Continued)
DCE Poll Verify
Timer (sec):
(5-255)
DCE Error
Threshold: (1-10)
DCE Event Count:
(1-10)
4-44
Field
Specify the value of the T392 timer, which sets the length of time the
network should wait between status inquiry messages. If the network
does not receive a status inquiry message within the number of
seconds you specify, the network records an error. The default value is
200 seconds.
The attached CPE must be set to a value that is less than the DCE Poll
Verify Timer. Increase this value if the DCE device has a poll
frequency that is greater than or equal to the DCE Poll Verify Timer.
Decrease this value if the DTE's poll frequency is less than or equal to
1/2 of the DCE Poll Verify Timer.
Specify the DCE Error threshold (392). This parameter is used with
the DCE Events Count (N393) parameter. The local management
protocol monitors the number of events you specify for the DCE
event count. If the number of events found in error exceeds the DCE
Error Threshold you specify, the link is declared inactive. The default
value is 3.
Specify the DCE Event Count. This field specifies the number of
events in a sliding window of events monitored by the network. An
event is the receipt of a valid or invalid status inquiry message or
expiration of the T392 timer. The default value is 4.
For example, use the default DCE Error Threshold value of 3 and the
default DCE Event Count value of 4. If 3 (N392) of the last 4 (N393)
events are bad, the link is declared inactive. The link remains inactive
until the network receives four consecutive error-free events.
Note: The DCE Error Threshold and the DCE Event Count work
together. The lower you set these values, the more sensitive the logical
port is to LMI poll errors. To make the logical port less sensitive to
errors, increase these values.
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
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Action/Description