Lucent Technologies CBX 3500 Configuration Manual page 476

Configuring ATM PVCs
Configuring Frame Relay-to-ATM Interworking Circuits
Table 10-13. Add PVC: User Preference Tab Fields (Continued)
FCP Discard
(Fwd/Rev)
Bandwidth Priority
(0-15)
CDV Tolerance
(1-65535)
(microsec)
(PVCs with
CBX/GX and
ATM CS DS3/E3,
1-port ATM IWU
OC-3c/STM-1,
and 12-port T1/E1
module endpoints
only)
Reroute Balancing
10-621/19/05
Field
Displays only if you selected a QoS class that supports FCP
Discard. Select one of the following options:
CLP1
UBR, ABR, and VBR-NRT PVCs. If the current cell causes the
queue for a PVC to exceed the discard thresholds, and the cell has
CLP set to 1, the cell is discarded. Note that EPD is not performed
in this case.
EPD
VBR-NRT PVCs. If you select this option, then when a cell causes
the queue for a PVC to exceed the discard thresholds, the VC enters
the EPD state. The cells in the current packet of the VC are
admitted to the queue. However, when the end of the current packet
is detected, all of the cells in the next packet are discarded for that
PVC.
See
Note: While the FCP Discard attribute is only applicable to a CBX
500 with an FCP, this attribute is offered as a selection on non-CBX
endpoints. This is because even though one or both endpoints may
not be on a CBX with FCP, the PVC might traverse a CBX 500 FCP
trunk. In this case, the provisioned attribute is used.
Specify a value from zero (0) through 15, where zero (0) is the
default and indicates the highest priority.
See
Enter a value between 1 - 65535 µsec to define the CDVT. The
UPC uses this value to police the requested TD. A lower CDVT
value results in a more stringent enforcement of the TD, while a
larger CDVT results in a less stringent enforcement. The default is
600 µsec.
1-port
For more information, see the ATM Forum User-Network Interface
(UNI) Specification (section 3).
When the check box is selected (default), the PVC conforms to the
configured reroute tuning parameters. This means that when the
PVC reroutes during trunk failure, it will migrate back to its
original trunk at a rate and time determined by the configured
reroute tuning parameters. When the check box is cleared, the PVC
ignores the switch tuning parameters.
For more information, see the
Started Guide
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Beta Draft Confidential
Action/Description
–
(default) You can provision selective CLP1 discard for
–
The ATM FCP can perform EPD for UBR, ABR, and
"ATM FCP Discard Mechanisms" on page 5-18
Appendix E, "Priority Routing,"
.
for details.
for more information.
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