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Configuring Frame Relay Ports 5-5
Frame Relay Status and Configuration
N3 Monitored Events Count
The monitored events count deÞnes the number of error-free polling cycles that
must occur before the DCE is declared active if the Þrst poll resulted in an error. If
the Þrst poll is error-free, the DCE is declared active immediately.
If the N2 Error Threshold is exceeded during the N3 count, the DCE will be
declared inactive, and the N3 count will be restarted.
T1 Link Integrity Timer
This value determines how often (in seconds) the logical DTE will initiate a status
enquiry to its connected DCE, checking the status of the network link. Note that
this value only has an effect when the selected port has been conÞgured as the
DTE (or user-side equipment); see N1 Polling Count, above, for more
information.
T2 Polling Verification Timer
The T2 Polling VeriÞcation Timer determines how long (in seconds) the logical
DCE will wait for a status enquiry from its attached DTE before recording an
error. This value only has an effect when the selected port has been conÞgured as
the DCE.
Maximum Supported VCs
This value deÞnes the maximum number of virtual circuits (or DLCIs) that can be
supported by the selected serial port. This value is generally determined by your
frame relay service provider.
Physical Port Interface
The physical port interface is deÞned by the portÕs connector and cabling type,
and must be conÞgured as follows:
¥ For the FRX4000 and SmartSwitch 1800, port 0 and port 1 are always RS-232;
¥ For the FRX4000, ports 2 and 3 are determined by the attached cables: RS-232,
V.35, RS-449, or X.21;
¥ For the SmartSwitch 1800, ports 2 and 3 are determined by the attached cables:
RS-232, V.35, or RS-449;
¥ For the FRX4000, ports 4-7 are determined by the expansion Line Interface
Card (LIC) and attached I/O cables. Only the valid interfaces will be listed
from the menu button. Possible interfaces are: RS-232, V.35, RS-449, and X.21.
(RS-449 and X.21 interfaces require an RS-422 LIC.)
NOTE
If you have installed the optional CSU/DSU card on an FRX4000 or SmartSwitch 1800,
it will logically take port 1, and you must conÞgure certain CSU/DSU parameters
through console management. Refer to your FRX or SmartSwitch 1800 hardware
documentation for more information.