Cisco MGX 8850 (PXM1E/PXM45) Configuration Manual page 330

Managing Connection Grooming
When the grooming operation evaluates a connection for rerouting, it uses just one of the three available
metrics. The chosen metric is based on the metrics configured for the connection. You can view the
configuration of connection metrics by entering the dspcon command for the connection. Connection
metrics that display -1 are not configured. In the following example, none of the three metrics are
configured.
PXM1E_SJ.7.PXM.a > dspcon 7:2.12:12 135 135
Port
----------------------------------------------------------------------------
Local
Remote 7:2.11:11
-------------------- Provisioning Parameters --------------------
Connection Type: VCC
Service Category: CBR
Bearer Class: BCOB-X
Last Fail Cause: No Fail
Continuity Check: Disabled
L-Utils: 100
OAM Segment Ep: Enabled
Pref Rte Id: 0
Priority: 8
---------- Traffic Parameters ----------
Values: Configured (Signalled)
Type <CR> to continue, Q<CR> to stop:
Tx PCR:
Tx CDVT: 250000
Tx CDV:
Tx CTD:
-------------------- Preferred Route Parameters------------------
Currently on preferred route: N/A
-------------------- Others -------------------------------------
SM: Record Number: 2, ATM
-------------------- Soft Reroute Parameters------------------
Negotiated Slave Soft Reroute Capability: DISABLE
Soft Reroute Last Cause: N/A.
In the example above, the transmit and receive values for CDV and CTD are -1. Also the Max Cost value
is set to -1. The Max Cost of a connection is defined during connection configuration and specifies the
maximum permissible sum of the administrative weight (AW) on each line along that connection.
The default configuration uses the AW metric for connection grooming. However, you can use the
cnfcon command to configure a connection to use maximum cost, CTD, or CDV metrics. If only one of
the metrics is configured, that metric is evaluated. If multiple metrics are configured, the metric with the
highest priority is evaluated. The highest priority is AW, which is selected whenever a maximum cost is
configured. The second highest priority is CTD, and the lowest priority is CDV.
metrics are chosen based on the connection configuration.
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
8-40
Vpi Vci
7:2.12:12 135.135
Address: 47.00918100000000001a533377.000001073b0c.00
Node name: PXM1E_SJ
125.125
Address: 47.00918100000000001a533377.000001073b0b.00
Node name: PXM1E_SJ
R-Utils: 100
50 (50
(250000
-1 (-1
-1 (-1
Chapter 8
Owner
MASTER
SLAVE
Cast Type: Point-to-Point
Conformance: CBR.1
Attempts: 0
Frame Discard: Disabled
Max Cost: -1 Routing Cost: 0 (N/A)
Directed Route: No
Num Parties: -
) Rx PCR: 50
)
) Rx CDV: -1
) Rx CTD: -1
Soft Reroute is not performed yet.
Managing PNNI Nodes and PNNI Routing
State Persistency
OK Persistent
OK Persistent
(50 )
(-1 )
(-1 )
Table 8-13
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
shows how