Procedure 11-30: Provision FC-DPORT VCG parameters

- Overview

This procedure provides a list of provisionable parameters for virtual concatenation groups (VCGs) on the LNW73/LNW73C FC-DPORT circuit pack.

- Privilege level

You must login as either a Privileged or General user to complete this procedure.

- Before you begin

Prior to performing this procedure, refer to Before you begin and Required equipment in this chapter and you must have complete work instructions for this procedure that detail:

  • The network configuration and the terminating nodes.

  • The values to be set for each parameter.

Steps

Use this procedure as a reference for provisioning VCG parameters.

 
1

Use the ed-vcg-data TL1 command or select Configuration → Equipment from the System View menu for the majority of parameters. Expand the details for the circuit pack, select (highlight) the VCG port, then click Select.

Result:

Exceptions to provisioning parameters from the Configuration → Equipment command will be noted in this procedure.

Reference:

Appendix A, Provisionable parameters


2

Use Table 11-12, ED-VCG-DATA command provisionable parameters as reference to provision the necessary parameters from your work instructions.

Important!

Some of the parameters may have already been provisioned from earlier procedures for establishing service or packet rings.


End of steps

ED-VCG-DATA command parameters

Table 11-12, ED-VCG-DATA command provisionable parameters lists the provisionable parameters for the ed-vcg-data command:

Table 11-12: ED-VCG-DATA command provisionable parameters

Parameter

Description

vmode

VCG Monitoring Mode may have one of the following values:

  • AUTO - port automatically goes in-service (IS) when a valid input is received. Initial value.

  • NMON (not monitored)

vpm

VCG PM Enable. This parameter controls when performance monitoring is enabled for the specified VCG. Use the Performance → Prov PM Settings command from the System View menu to set this performance monitoring parameter to one of the following values:

  • Enable (initial value)

  • Disable

lcasmd

LCAS Mode. This parameter controls whether LCAS (Link Capacity Adjustment Scheme) is enabled for the specified VCG. When enabled, the LCAS protocol allows for hitless changes to the provisioned size of the VCG.

Values for LCAS Mode include:

  • ENABLE

  • DISABLE (initial value)

Note that ENABLE is valid only when gfptype (in RTRV-DPORT) is ASYNC-FC.

htmr

Hold-Off Timer. This parameter, which is only in effect if lcasmd = ENABLE, specifies the delay between when a tributary is detected faulty and when it is automatically removed from the VCG. It allows underlying protection, if any, to react first. It applies to all tributaries in the specified VCG.

Values:

  • 0 to 10,000 ms (10 sec), in 100 millisecond steps

  • 99,999 ms (representing infinity)

Initial value is 200 milliseconds.

wtr

Wait-to-Restore. This parameter, which is only in effect if lcasmd = ENABLE, specifies the delay between when a tributary, previously removed from the VCG because of fault, is detected to be normal and when it is automatically returned to the VCG. It applies to all tributaries in the specified VCG.

Values: 0 to 3600 seconds in 1 second steps. Initial value = 5.

vcat

Virtual Concatenation Mode. Specifies whether H4 is inserted/monitored for the specified VCG. It has effect only when a single trib, not VT, is cross-connected to the VCG, to allow interworking with non-VCAT equipment.

Valid values are

  • ENABLE (default)

  • DISABLE

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