SNMP Support for VLAN Subinterfaces

This feature module describes the SNMP Support for VLAN Subinterfaces feature. It includes information on the benefits of the new feature, supported platforms, supported standards, and the commands necessary to configure the SNMP Support for VLAN Subinterfaces feature.

The SNMP Support for VLAN Subinterfaces feature provides mib-2 interfaces sparse table support for Fast Ethernet subinterfaces. This enhancement is similar to the functionality supported in Frame Relay subinterfaces.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Information About SNMP Support for VLAN Subinterfaces

Benefits

Sparse table support for the interfaces table on Fast Ethernet subinterfaces provides customers accustomed to Frame Relay subinterfaces the same functionality.

Supported Platforms

  • Cisco 2600 series

  • Cisco 3600 series

  • Cisco 4000-m series

  • Cisco 7200 series

  • Cisco 7500 series

How to SNMP Support for VLAN Subinterfaces

Enabling the SNMP Agent on VLAN Subinterfaces

Perform the following task to enable the SNMP agent on VLAN subinterfaces.

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    snmp community string

    4.    interface type slot/port

    5.    encapsulation isl vlan-identifier

    6.    ip address ip-address mask

    7.    end

    8.    show vlans


DETAILED STEPS
     Command or ActionPurpose
    Step 1 enable


    Example:
    Router> enable
     

    Enables privileged EXEC mode.

    • Enter your password if prompted.

     
    Step 2 configure terminal


    Example:
    Router# configure terminal
     

    Enters global configuration mode.

     
    Step 3 snmp community string


    Example:
    Router(config)# snmp community public
     

    Enables the SNMP agent for remote access.

     
    Step 4 interface type slot/port


    Example:
    Router(config)# interface FastEthernet 0/1.1
     

    Selects a particular Fast Ethernet interface for configuration.

     
    Step 5 encapsulation isl vlan-identifier


    Example:
    Router(config-if)#  encapsulation isl 10
     

    Enables the Inter-Switch Link.

     
    Step 6 ip address ip-address mask


    Example:
    Router(config)# ip address 192.168.10.1 255.255.255.0
     

    Sets a primary or secondary IP address for an interface.

     
    Step 7 end


    Example:
    Router(config-if)# end
     

    Returns to privileged EXEC mode.

     
    Step 8 show vlans


    Example:
    Router# show vlans
     

    Displays VLAN subinterfaces.

     

    Configuration Examples for SNMP Support for VLAN Subinterfaces

    Example Enabling the SNMP Agent for VLAN Subinterfaces

    The following configuration example shows you how to enable the SNMP agent on the router with VLAN subinterfaces to monitor the SNMP application remotely:

    snmp community public
!
interface FastEthernet4/0.100
 encapsulation isl 100
 ip address 192.168.10.21 255.255.255.0
!
interface FastEthernet4/0.200
 encapsulation isl 200
 ip address 172.21.200.11 255.255.255.0
!
interface FastEthernet4/1.1
 encapsulation isl 10
 ip address 171.69.2.111 255.255.255.0

    Additional References

    Related Documents

    Related Topic

    Document Title

    Cisco IOS commands

    Cisco IOS Master Commands List, All Releases

    SNMP commands

    Cisco IOS Network Management Command Reference

    Standards

    Standard

    Title

    None

    --

    MIBs

    MIB

    MIBs Link

    • None

    To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL:

    http:/​/​www.cisco.com/​go/​mibs

    RFCs

    RFC

    Title

    RFC 1573

    Evolution of the Interfaces Group of MIB-II

    Technical Assistance

    Description

    Link

    The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

    http:/​/​www.cisco.com/​cisco/​web/​support/​index.html

    Feature Information for SNMP Support for VLAN Subinterfaces

    The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

    Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.
    Table 1 Feature Information for SNMP Support for VLAN Subinterfaces

    Feature Name

    Releases

    Feature Information

    SNMP Support for VLAN Subinterfaces

    12.2

    The SNMP Support for VLAN Subinterfaces feature provides mib-2 interfaces sparse table support for Fast Ethernet subinterfaces. This enhancement is similar to the functionality supported in Frame Relay subinterfaces.