Provision Resilient Packet Ring (RPR)-capable VCG parameters

Procedure 11-33: Provision Resilient Packet Ring (RPR)-capable VCG parameters

Overview

This procedure provides a list of provisionable parameters for a Resilient Packet Ring (RPR)-capable VCG port.

RPR Span VCGs may be either VCG v1 or VCG v2. The RPR IF VCG is VCG v1.

The ed-vcg-rpr TL1 command is used to modify (edit) the RPR-capable properties of a port. An RPR instance consists of an Interface (IF) containing the common part (IF), and two directional Spans.

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 Ethernet nodes.
The values to be set for each parameter.

Steps

Use this procedure as a reference for provisioning parameters for a Resilient Packet Ring (RPR)-capable VCG port.

Use the ed-vcg-rpr TL1 command or select Configuration → Equipment from the System View menu. Expand the details of the LNW78 100/1G-FSR circuit pack, select the VCG being provisioned, then click Select.

Use Table 11-13, ED-VCG-RPR command provisionable parameters as reference to provision the necessary parameters from your work instructions.

All parameters are for the RPR IF (VCG v1) unless indicated as an RPR span (VCG v1 or VCG v2) parameter.

End of steps

ED-VCG-RPR command parameters

Table 11-13, ED-VCG-RPR command provisionable parameters lists the provisionable parameters for a Resilient Packet Ring (RPR)-capable VCG port:

Table 11-13: ED-VCG-RPR command provisionable parameters

Parameter	Description
mtu_size	MTU size (bytes). This parameter specifies the MTU (Maximum Transmission Unit) size supported on the port, addressed by the aid. This is the size of the payload in the Ethernet frame, excluding Source and Destination Address, Type and CRC field, but including all VLAN tags. Value: An integer in the range 46 to 10222. The initial value is 1508.
vmode	VCG Monitoring Mode. May have one of the following values: AUTO - port automatically goes in-service (IS) when a valid input is received. NMON (not monitored) This is an RPR Span parameter.
tagfilter	Tag Filter. This parameter is used to enable/disable VLAN/Port Tag filtering and may be one of the following: ENABLE (initial value): allows only provisioned VLANs/port tags on a port. DISABLE: allows all VLANs/port tags on a port. Tag Filter does not prevent creating, modifying, or deleting VLANs.
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. This is a Span parameter.. Valid values are: ENABLE (Initial Value) DISABLE
htmr	Hold-Off Timer (in milliseconds). This parameter, 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. This is a Span parameter. Values: 0 to 10,000 ms (10 sec), in 100 millisecond steps. 99,999 ms (represents infinity). Initial and only valid value for the LNW78.
vcat	Virtual Concatenation Mode. Specifies whether vcat overhead information is inserted/monitored for the specified VCG. It has effect only when a single trib is cross-connected to the VCG, to allow interworking with non-VCAT equipment. Valid values are: ENABLE (default) DISABLE vcat cannot be set to DISABLE if more than one tributary cross-connection exists on the VCG. This is an RPR Span parameter.
ifmode	RPR IF Monitoring Mode. May have one of the following values: AUTO - port automatically goes in-service (IS) when a valid input is received on at least one associated span. NMON - not monitored
addporttag	Add Port Tag. Composite list of Port Tag values to be added. Up to 55 Port Tag values can be provisioned in a single command. Values: An ampersand-separated list of Port Tag identifiers, where each Port Tag identifier is an integer in the range 1 to 4093. The initial status of this list is empty. Either the addporttag or delporttag parameters can be provisioned by this command, but not both. They must be provisioned in separate command instances. This parameter is valid when vlantagmd is set to SWITCHED (see ED-EQPT) and the port belongs to a virtual switch with tagmd set to TRANS). To be able to delete a port tag, MAC+tag address provisioning must be removed first from the port.
delporttag	Delete Port Tag. Composite list of Port Tag values to be deleted. Up to 55 Port Tag values can be provisioned in a single command. Values: An ampersand-separated list of Port Tag identifiers, where each Port Tag identifier is an integer in the range 1 to 4093. The initial status of this list is empty. Either the addporttag or delporttag parameters can be provisioned by this command, but not both. They must be provisioned in separate command instances. This parameter is valid when vlantagmd is set to SWITCHED (see ED-EQPT) and the port belongs to a virtual switch with tagmd set to TRANS). To be able to delete a port tag, MAC+tag address provisioning must be removed first from the port.
vpm	VCG Performance Monitoring (PM). This parameter controls whether performance monitoring is enabled for the specified VCG. It controls the IF and both spans. Values: Values: ENABLE (initial value) DISABLE
ethertype	Ethernet Type field (TPID). Used to interwork with other vendors’ equipment using stacked VLAN. This parameter is valid only when vlantagmd is set to SWITCHED and the port belongs to a virtual switch with tagmd set to TRANS. Value: A hexadecimal string in the range 0601 to FFFF. The initial value is FFFF (hexadecimal).
qsz	Total queue size. This parameter applies VCGs on the LNW78. If the vcg is part of a virtual switch and the VLAN Tagging Mode (vlantagmd) is set to SWITCHED, valid value is an integer between 0 and 256 Kbytes (default is 256 Kbytes). The value cannot be greater than the maximum supported frame size. Refer to the MTU Size parameter.
qminthldy	Yellow Packet Minimum (Min) Drop Threshold. Specifies the minimum dropping threshold for yellow packets used by the drop algorithm. Expressed as a “percentage” of the total queue size (qsz). Valid value is an integer from 0 through 99 (default is 33). Value must be less than the Yellow Max Drop Threshold. This parameter applies only if the port is part of a virtual switch when the circuit pack VLAN Tagging Mode (vlantagmd) is set to SWITCHED. Parameter only applies to the LNW78.
qmaxthldy	Yellow Maximum (Max) Drop Threshold. Specifies the maximum dropping threshold for yellow packets used by the drop algorithm. Expressed as a “percentage” of the total queue size (qsz). Valid value is an integer from 0 through 100 (default is 50). Value must be greater than the Yellow Min Drop Threshold and less than or equal to the Green Min Drop Threshold This parameter applies only if the port is part of a virtual switch when the circuit pack VLAN Tagging Mode (vlantagmd) is set to SWITCHED. Parameter only applies to the LNW78.
qminthldg	Green Minimum (Min) Drop Threshold. Specifies the minimum dropping threshold for yellow packets used by the drop algorithm. Expressed as a “percentage” of the total queue size (qsz). Valid value is an integer from 0 through 100 (default is 90). Value must be greater than or equal to the Yellow Max Drop Threshold. This parameter applies only if the port is part of a virtual switch when the circuit pack VLAN Tagging Mode (vlantagmd) is set to SWITCHED. Parameter only applies to the LNW78.
qdropwt1	Maximum drop probability mark for CoS 1 (Class C) packets. This parameter is used by the drop algorithm. It is expressed as a percentage. Value: an integer between 0 and 100. The initial value is 100. qdropwt1 must be ≥ qdropwt2 >= qdropwt3.
qdropwt2	Maximum drop probability mark for CoS 2 (Class B) packets. This parameter is used by the drop algorithm. It is expressed as a percentage. Value: an integer between 0 and 100. The initial value is 100. qdropwt1 must be ≥ qdropwt2 ≥ qdropwt3.
qdropwt3	Maximum drop probability mark for CoS 3 (Class A) packets. This parameter is used by the drop algorithm. It is expressed as a percentage. Value: an integer between 0 and 100. The initial value is 50. qdropwt1 must be >= qdropwt2 >= qdropwt3.