SAP egress aggregate meter

This chapter provides information to configure service-level egress rate limits using the command line interface.

Overview

The SAP egress aggregated meter feature allows a user to limit the amount of traffic sent out of a SAP by enforcing service-level egress rate limits.

This feature is supported only on the 7210 SAS-D and 7210 SAS-Dxp.

This feature allows a meter to be associated with the SAP egress to limit the aggregate amount of traffic across all FCs that are sent out of the SAP. This feature is supported for SAPs in P2MP services (Epipe, VPLS, RVPLS, IES, and VPRN).

Configuration notes

  • Before configuring SAP egress aggregate meter on a SAP, the user must reallocate the resources from the egress-internal-tcam pool toward the SAP egress meters using the CLI command configure>system>resource-profile>egress-internal-tcam>egress-sap-aggregate-meter. For more on the egress-sap-aggregate-meter command, see the 7210 SAS-D, Dxp, K 2F1C2T, K 2F6C4T, K 3SFP+ 8C Basic System Configuration Guide. The egress-internal- tcam pool resources are shared with other features such as egress ACLs.

  • The SAP egress aggregate policer is not FC and profile aware. The packets scheduled out of the per-port queues are on a first-come-first-served basis and limits the amount of traffic to the configured rate across all the FCs for a SAP.

  • For more information about the optional parameter enable-stats, of the configure>service>vpls>sap>egress>aggregate-meter-rate CLI command, see the7210 SAS-D, Dxp, K 2F1C2T, K 2F6C4T, K 3SFP+ 8C Basic System Configuration Guide. This option associates a counter with the meter to count the forwarded packets/octets and dropped packets/octets. If the option and accounting is enabled for the SAP, service egress accounting records contain the forwarded and dropped counts.

Basic configurations

  • Allocate resources to the feature using the command configure>system> resource-profile>egress-internal-tcam>egress-sap-aggregate-meter. If necessary, free up resources for use by this feature by taking away resources from other features.

  • Configure the SAP egress aggregate meter rate using the command configure>service>vpls>sap>egress>aggregate-meter-rate rate-in-kbps[burst burst-in-kbits][enable-stats]

    Note:

    Use the enable-stats parameter to enable counter used to count total forwarded packet out of the SAP.

SAP egress aggregate meter command reference

For more information of the SAP egress aggregate meter commands, see the 7210 SAS-D, Dxp, K 2F1C2T, K 2F6C4T, K 3SFP+ 8C Basic System Configuration Guide.