Cabletron Systems FRM User Manual - page 83
Configuring Frame Relay
7-17
N1 Polling Count
specifies the number of polling cycles between requests for Full Status reports, which
include status of all PVCs on the physical link. Every "
T1
" seconds (see "
T1 Link
Integrity Timer
"), the logical DTE will send a Status Enquiry to the network, requesting
status of the network link. Each exchange of one enquiry and one message (response)
is a polling cycle. After every "
N1
" cycles, an enquiry for a Full Status report will be
sent.
If this port is configured as logical DCE, status enquiries will be initiated at the DTE,
and the local node will respond with status messages.
N2 Error Threshold
is the number of link reliability and/or protocol errors that can occur during the period
defined by
N3 Monitored Events Count
before the logical DCE will be declared
inactive.
N3 Monitored Events Count
is the number of error-free polling cycles after which the DCE will be declared active
if the first poll resulted in an error. If the first poll was error free, the DCE will be
declared active after that poll. (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
determines how often the logical DTE will initiate a Status Enquiry message to the
DCE.
T2 Polling Verification Timer
indicates how long the logical DCE will wait between Status Enquiry messages from
the DTE before recording an error.
Enable Outgoing Rate Control
determines whether the rate parameters (
CIR
,
B
C
,
B
E
) will be enforced.
Enable Bandwidth Allocation
determines whether
bandwidth allocation
(see page 7-6) will be enforced.
For Backup Use Only?
determines whether all DLCIs on the port will be reserved exclusively as backups for
other DLCIs in the same node. See "
Configuring Frame Relay Backup Groups
" on
page 7-21. If this parameter is set to
Y
, the port will remain disabled until needed for
backup.
If configuring the port for backup use only, make sure no DLCIs on the port
have been configured on an IP, IPX, or LLC2 interface.
Automatic DCE
enables (if
Y
) automatic detection by the software of whether the port is a physical
DCE or DTE. This can be helpful in cases such as a connected backup CSU/DSU,
which might be configured differently than the primary connection. The automatic
DCE feature allows switchover to occur without reconfiguring the port.