Configuring PIM MIB Extension for IP Multicast

• Information About PIM MIB Extension for IP Multicast, on page 1

• How to Configure PIM MIB Extension for IP Multicast, on page 2

• Configuration Examples for PIM MIB Extensions, on page 3

• Additional References for PIM MIB Extension for IP Multicast, on page 3

• Feature Information for PIM MIB Extension for IP Multicast, on page 4

Information About PIM MIB Extension for IP Multicast

PIM MIB Extensions for SNMP Traps for IP Multicast

Protocol Independent Multicast (PIM) is an IP multicast routing protocol used for routing multicast data

packets to multicast groups. RFC 2934 defines the PIM MIB for IPv4, which describes managed objects that

enable users to remotely monitor and configure PIM using Simple Network Management Protocol (SNMP).

PIM MIB extensions introduce the following new classes of PIM notifications:

• neighbor-change--This notification results from the following conditions:

• A router’s PIM interface is disabled or enabled (using the ip pim command in interface configuration

mode)

• A router's PIM neighbor adjacency expires (defined in RFC 2934)

• rp-mapping-change--This notification results from a change in the rendezvous point (RP) mapping

information due to either Auto-RP messages or bootstrap router (BSR) messages.

• invalid-pim-message--This notification results from the following conditions:

• An invalid (*, G) Join or Prune message is received by the device (for example, when a router

receives a Join or Prune message for which the RP specified in the packet is not the RP for the

multicast group)

• An invalid PIM register message is received by the device (for example, when a router receives a

Benefits of PIM MIB Extensions

PIM MIB extensions:

Configuring PIM MIB Extension for IP Multicast

• Allow users to identify changes in the multicast topology of their network by detecting changes in the

RP mapping.

• Provide traps to monitor the PIM protocol on PIM-enabled interfaces.

• Help users identify routing issues when multicast neighbor adjacencies expire on a multicast interface.

• Enable users to monitor RP configuration errors (for example, errors due to flapping in dynamic RP

allocation protocols like Auto-RP).

How to Configure PIM MIB Extension for IP Multicast

Enabling PIM MIB Extensions for IP Multicast

Perform this task to enable PIM MIB extensions for IP multicast.

• The pimInterfaceVersion object was removed from RFC 2934 and, therefore, is no longer supported in

software.

• The following MIB tables are not supported in Cisco software:

• pimIpMRouteTable

• pimIpMRouteNextHopTable

Note

Procedure

PurposeCommand or Action

Enables privileged EXEC mode.enable

Step 1

Example:

• Enter your password if prompted.

Device> enable

Enters global configuration mode.configure terminal

Example:

Step 2

Device# configure terminal

Enables a device to send PIM notifications.snmp-server enable traps pim

[neighbor-change | rp-mapping-change |

invalid-pim-message]

Step 3

• neighbor-change --This keyword enables

notifications indicating when a device’s

Example:

PIM interface is disabled or enabled, or

when a device’s PIM neighbor adjacency

expires.

Device(config)# snmp-server enable traps

pim neighbor-change

• rp-mapping-change --This keyword

enables notifications indicating a change

Configuring PIM MIB Extension for IP Multicast

How to Configure PIM MIB Extension for IP Multicast

PurposeCommand or Action

in RP mapping information due to either

Auto-RP messages or BSR messages.

• invalid-pim-message --This keyword

enables notifications for monitoring invalid

PIM protocol operations (for example,

when a device receives a join or prune

message for which the RP specified in the

packet is not the RP for the multicast group

or when a device receives a register

message from a multicast group for which

it is not the RP).

Specifies the recipient of a PIM SNMP

notification operation.

snmp-server host host-address [traps |

informs] community-string pim

Example:

Step 4

Device(config)# snmp-server host

10.10.10.10 traps public pim

Configuration Examples for PIM MIB Extensions

Example Enabling PIM MIB Extensions for IP Multicast

The following example shows how to configure a router to generate notifications indicating that a PIM interface

of the router has been enabled. The first line configures PIM traps to be sent as SNMP v2c traps to the host

with IP address 10.0.0.1. The second line configures the router to send the neighbor-change class of trap

notification to the host.

snmp-server host 10.0.0.1 traps version 2c public pim

snmp-server enable traps pim neighbor-change

interface ethernet0/0

ip pim sparse-mode

Additional References for PIM MIB Extension for IP Multicast

Related Documents

Document TitleRelated Topic

See the IP Multicast Routing Commands section of the

Command Reference (Catalyst 9500 Series Switches)

For complete syntax and usage information for

the commands used in this chapter.

Cisco IOS Master Commands List, All Releases

Cisco IOS commands

Configuring PIM MIB Extension for IP Multicast

Configuration Examples for PIM MIB Extensions

Standards and RFCs

TitleStandard/RFC

A New Proposal for Bi-directional PIM

draft-kouvelas-pim-bidir-new-00.txt

Host Extensions for IP Multicasting

RFC 1112

Address Allocation for Private Internets

RFC 1918

GLOP Addressing in 233/8

RFC 2770

An Overview of Source-Specific Multicast (SSM)

RFC 3569

MIBs

MIBs LinkMIB

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

No new or modified MIBs are supported by this

feature, and support for existing MIBs has not

been modified by this feature.

Technical Assistance

LinkDescription

http://www.cisco.com/cisco/web/support/index.htmlThe 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.

Feature Information for PIM MIB Extension for IP Multicast

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.

Configuring PIM MIB Extension for IP Multicast

Feature Information for PIM MIB Extension for IP Multicast

Table 1: Feature Information for PIM MIB Extension for IP Multicast

Feature InformationReleasesFeature Name

Protocol Independent Multicast (PIM) is an IP

multicast routing protocol used for routing multicast

data packets to multicast groups. RFC 2934 defines

the PIM MIB for IPv4, which describes managed

objects that enable users to remotely monitor and

configure PIM using Simple Network Management

Protocol (SNMP).

This feature was implemented on the following

platforms:

• Cisco Catalyst 9500 Series Switches

Cisco IOS XE Everest

16.5.1a

PIM MIB Extension for IP

Multicast

Configuring PIM MIB Extension for IP Multicast

Feature Information for PIM MIB Extension for IP Multicast

Configuring PIM MIB Extension for IP Multicast

Feature Information for PIM MIB Extension for IP Multicast