Cisco Nexus 7000 Series NX-OS Multicast Routing Configuration Guide
Enabling Multicast Performance Enhancement on VDCs
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Enabling Multicast Performance Enhancement on VDCs

Enabling Multicast Performance Enhancement on VDCs

This chapter describes how to enable the multicast performance enhancement for Cisco Nexus 7000 Series M1-XL Ethernet modules that are allocated to virtual device contexts (VDCs) in Cisco NX-OS devices.

Information About Multicast Performance Enhancement

In Cisco NX-OS 6.2(2) and later releases, the multicast performance enhancement supports the optimized shim frame format in multicast-replicated frames to improve multicast performance. The enhancement is supported only on Cisco Nexus 7000 M1 Series Ethernet modules with an XL option (M1-XL) that are allocated as resources in virtual device contexts (VDCs).

Licensing Requirements for Multicast Performance Enhancement

Product

License Requirement

Cisco NX-OS

The multicast performance enhancement for Cisco Nexus 7000 Series M1 Ethernet modules with an XL option requires no license. However, PIM, PIMv6, MSDP, and certain commands for creating and managing VDCs require an Enterprise Services License. For a complete explanation of the Cisco NX-OS licensing scheme, see the Cisco NX-OS Licensing Guide.

Guidelines and Limitations for Enhanced Multicast Performance

Enhanced multicast performance can be enabled only on Cisco Nexus 7000 Series M1-XL Ethernet modules that are allocated to a virtual device context (VDC).

Enabling Multicast Performance Enhancement


Note


If you are familiar with the Cisco IOS CLI, be aware that the Cisco NX-OS commands for this feature might differ from the Cisco IOS commands that you would use.


Before You Begin
  • You must create the VDC on which you want to enable the multicast performance enhancement. For information, see the Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide.
  • You have the name for the VDC to be configured.
Procedure
     Command or ActionPurpose
    Step 1 configure terminal


    Example:
    Switch# configure terminal
    Switch(config)#
     

    Enables global configuration mode.

     
    Step 2vdc vdc-name


    Example:
    Switch(config)# vdc MyVDC 
    Switch(config-vdc)#
     

    Specifies a VDC and enters VDC configuration mode.

     
    Step 3limit-resource module-type m1xl


    Example:
    Switch(config-vdc)# limit resource module-type m1xl
    This will cause all ports of unallowed types to be removed from this vdc. Continue? [yes] Y 
    Switch(config-vdc)#
     

    Limits the resources for the VDC being configured to Cisco Nexus 7000 Series Ethernet modules with an XL Option only.

     
    Step 4switchto vdc vdc-name


    Example:
    Switch(config-vdc)# switchto vdc MyVDC
    Switch-MyVDC(config-vdc#)
    
     

    Switches from the default VDC to the specified VDC.

    Note   

    You must be a network-admin or network-operator to use the switchto vdc command.

     
    Step 5hardware forwarding shim


    Example:
    Switch-MyVDC(config-vdc)# hardware forwarding shim
    
     

    Enables shim optimization in frame header for this VDC.

     
    Step 6show vdc vdc-name detail


    Example:
    Switch-MyVDC(config-vdc)# show vdc MyVDC 
    
     

    (Optional) Displays information about the specified VDC.

     
    Step 7copy running-config startup-config


    Example:
    Switch-MyVDC(config-vdc)# copy running-config startup-config  
    
     

    (Optional) Copies the running configuration to the startup configuration.

     

    Related Documents for Multicast Performance Enhancement

    Related Topic

    Document Title

    Multicast commands

    Cisco Nexus 7000 Series NX-OS Multicast Routing Command Reference

    VDCs

    Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide

    VDC commands

    Cisco Nexus 7000 Series NX-OS Virtual Device Context Command Reference

    Feature History for Multicast Performance Enhancement

    This Table lists the release history for this feature.

    Table 1 Feature History for Multicast Performance Enhancement

    Feature Name

    Releases

    Feature Information

    Multicast performance enhancement

    6.2(2)

    Enables enhanced multicast performance on Cisco Nexus 7000 Series Ethernet modules with an XL Option allocated to virtual device contexts (VDCs).

    The following command was introduced: hardware forwarding shim.