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    Configuring ANCP for QoS Adaptive Mode

    The following topics explain how to configure ANCP for QoS adaptive mode:

    Overview of Configuring ANCP for QoS Adaptive Mode

    QoS adaptive mode enables the system to shape VLAN and ATM VC downstream rates received from ANCP by dynamically creating QoS parameter instances associated with the ANCP (L2C) downstream application. The system can QoS adjust VLAN and ATM VC downstream rates received from ANCP when you enable QoS adaptive mode.

    When QoS adaptive mode is enabled, ANCP dynamically creates QoS parameter instances associated with the QoS downstream rate application. ANCP also determines the value the system uses when recalculating the QoS shaping rate. The values of the parameter instances track the bandwidth of the local loop that is communicated by ANCP.

    All QoS parameter instances associated with the neighbor can be removed from the topology discovery table. After clearing ANCP entries or neighbor sessions, the system recreates the QoS parameter instances when QoS adaptive mode is enabled and ANCP learns the rates again.

    For more information about the QoS downstream rate application and QoS parameters, see QoS Downstream Rate Application Overview in JunosE Quality of Service Configuration Guide.

    Clearing Entries from the Topology Discovery Table

    You can clear all entries or a specified entry from the topology discovery table and also the topology discovery data in mirrored storage associated with the neighbor. Issuing the clear l2c discovery-table command without specifying an entry removes all QoS parameter instances associated with the neighbor. Specifying an entry in the table removes the QoS parameter instance associated with that entry.

    To clear entries associated with a specified neighbor from the topology discovery table and topology discovery data in mirrored storage:

    • Issue the clear l2c discovery-table command in Privileged Exec mode.
      host1#clear l2c discovery-table neighbor ACCESS_NODE_1

    There is no no version.

    Enabling QoS Adaptive Mode for ANCP

    You can QoS adjust VLAN and ATM VC downstream rates received from ANCP when you enable QoS adaptive mode.

    To enable the QoS adaptive mode for ANCP:

    • Issue the qos-adaptive-mode command in L2C Configuration mode.
      host1(config-l2c)#qos-adaptive-mode

    You can use the no version to disable QoS adaptive mode for the system.

    Published: 2014-08-12