PDN-IGMP-STD-EXT-MIB

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Organization: Paradyne Networks MIB Working Group Other information about group editing the MIB.

Last Updated: 2004-08-17

Category: IP Services

Description: Extends standard IGMP MIB objects with Paradyne-specific multicast group membership and proxy-reporting parameters.

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What Is PDN-IGMP-STD-EXT-MIB?

This is a Paradyne (PDN) extension to the standard IGMP-STD-MIB, adding vendor-specific objects for IGMP multicast group snooping and proxy behavior on Paradyne network access devices. It exposes per-interface IGMP snooping enable/disable state, leave-delay timers, and detailed multicast traffic statistics such as packets and IGMP queries/reports sent and received. Its monitoring value is in tracking multicast forwarding health and IGMP protocol activity—confirming snooping is enabled where expected, watching join/leave timing behavior, and using packet/query/report counters to detect multicast flow problems or misbehaving hosts—though it does not cover general device hardware health. It explicitly supplements the standard IETF IGMP-STD-MIB, reusing its interface and cache table structure. It would be deployed on Paradyne DSL/access multiplexer equipment supporting IPTV or multicast video delivery in broadband access networks, and operators of such equipment rely on the PDN-IGMP-STD-EXT-MIB MIB to interpret these vendor-specific IGMP snooping objects correctly.

IPNetwork Monitor allows you to monitor SNMP objects defined in PDN-IGMP-STD-EXT-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Paradyne DSL/broadband access multiplexer

Monitoring Examples

An admin would check pdnIgmpInterfaceExtTable's pdnIgmpInterfaceSnoopEnableDisable to confirm IGMP snooping is active on a subscriber-facing interface, and review pdnIgmpInterfaceLeaveDelay/pdnIgmpInterfaceLeaveJoinForwardingDelay to tune how quickly multicast streams stop after a leave. The pdnIgmpCacheExtTable's counters—pdnIgmpCacheStatsMulticastPktsIn/Out and pdnIgmpCacheStatsIgmpQueriesIn/Out—reveal whether multicast traffic and IGMP queries are flowing as expected; a sudden drop in pdnIgmpCacheStatsIgmpReportsIn could indicate subscribers are failing to join a multicast group (e.g., an IPTV channel). pdnIgmpStdExtNotifications would alert on significant IGMP state changes.

What Can Be Monitored

IGMP snooping enable state per interface
leave/join forwarding delay
multicast packets in/out
IGMP queries and reports in/out

Imported Objects

From IGMP-STD-MIB

igmpCacheEntry	OBJECT-TYPE
igmpInterfaceEntry	OBJECT-TYPE

From PDN-HEADER-MIB

pdn-common

From PDN-TC

SwitchState

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

How to Use in IPNetwork Monitor

Example using pdnIgmpCacheStatsMulticastPktsIn OID:

Select a Paradyne DSL/broadband access multiplexer (IGMP snooping/proxy extensions) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type pdnIgmpCacheStatsMulticastPktsIn into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The total number of IP Multicast packets received excluding IGMP messages. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
pdnIgmpStdExtMIB	1.3.6.1.4.1.1795.2.24.2.47			This MIB module is a supplement to the IGMP-STD-MIB.
pdnIgmpStdExtNotifications	1.3.6.1.4.1.1795.2.24.2.47.0
pdnIgmpStdExtObjects	1.3.6.1.4.1.1795.2.24.2.47.1
pdnIgmpInterfaceExtTable	1.3.6.1.4.1.1795.2.24.2.47.1.1		not-accessible	This table extends the igmpInterfaceTable.
pdnIgmpInterfaceExtEntry	1.3.6.1.4.1.1795.2.24.2.47.1.1.1		not-accessible	An extended entry in the igmpInterfaceTable. Each entry corresonds to a particular interface.
SWI pdnIgmpInterfaceSnoopEnableDisable	1.3.6.1.4.1.1795.2.24.2.47.1.1.1.1	SwitchState	read-write	This object specifies whether or not IGMP Snooping is enabled or disabled. enabled(1) - IGMP Snooping is Enabled disabled(2) - IGMP Snooping is Disabled
U32 pdnIgmpInterfaceLeaveDelay	1.3.6.1.4.1.1795.2.24.2.47.1.1.1.2	Unsigned32	read-write	This object specifies the leave-delay period. This value is defened as the period of time during which a multicast stream will continue to be forwarded on an interface after receipt of an IGMP leave message for that stream.
U32 pdnIgmpInterfaceLeaveJoinForwardingDelay	1.3.6.1.4.1.1795.2.24.2.47.1.1.1.3	Unsigned32	read-write	This object specifies the leave-join-delay period. This value is defined as the period of time during which new multicast streams will not be forwarded on a port following the receipt of an IGMP Leave message.
pdnIgmpCacheExtTable	1.3.6.1.4.1.1795.2.24.2.47.1.2		not-accessible	This table extends the igmpCacheTable.
pdnIgmpCacheExtEntry	1.3.6.1.4.1.1795.2.24.2.47.1.2.1		not-accessible	An extended entry in the igmpCacheTable. Each entry corresonds to a particular IP Multicast Group Destination Address on a particular interface.
C32 pdnIgmpCacheStatsMulticastPktsInEx	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.1	Counter32	read-only	The total number of IP Multicast packets received excluding IGMP messages.
C32 pdnIgmpCacheStatsMulticastPktsOut	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.2	Counter32	read-only	The total number of IP Multicast packets transmitted excluding IGMP messages.
C32 pdnIgmpCacheStatsIgmpQueriesIn	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.3	Counter32	read-only	The total number of IGMP Query messages received.
C32 pdnIgmpCacheStatsIgmpQueriesOut	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.4	Counter32	read-only	The total number of IGMP Query messages transmitted.
C32 pdnIgmpCacheStatsIgmpReportsIn	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.5	Counter32	read-only	The total number of IGMP Report messages received.
C32 pdnIgmpCacheStatsIgmpReportsOut	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.6	Counter32	read-only	The total number of IGMP Report messages transmitted.
C32 pdnIgmpCacheStatsIgmpLeavesIn	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.7	Counter32	read-only	The total number of IGMP Leave messages received.
C32 pdnIgmpCacheStatsIgmpLeavesOut	1.3.6.1.4.1.1795.2.24.2.47.1.2.1.8	Counter32	read-only	The total number of IGMP Leave messages transmitted.
SWI pdnIgmpSnoopingSelection	1.3.6.1.4.1.1795.2.24.2.47.1.3	SwitchState	read-write	This object specifies whether or not IGMP Snooping is enabled or disabled on a system-wide basis. enabled(1) - IGMP Snooping is Enabled on the device disabled(2) - IGMP Snooping is Disabled on the device
U32 pdnIgmpGeneralQueryInterval	1.3.6.1.4.1.1795.2.24.2.47.1.4	Unsigned32	read-write	This object is similar to the igmpInterfaceQueryInterval object defined in RFC2933. However, it can be used to set a global value that applies to all the interfaces in the system with IGMP enabled. A value of zero disables this option and thus the agent shall employ the value configured in the igmpInterfaceQueryInterval for each interface running IGMP. In the other hands, if this object is set to a value greater than zero, the value takes precedence over the value configured in the igmpInterfaceQueryInterval for that interface.
pdnIgmpStdExtAFNs	1.3.6.1.4.1.1795.2.24.2.47.2
pdnIgmpStdExtConformance	1.3.6.1.4.1.1795.2.24.2.47.3
pdnIgmpStdExtCompliances	1.3.6.1.4.1.1795.2.24.2.47.3.1
pdnIgmpStdExtMIBCompliance	1.3.6.1.4.1.1795.2.24.2.47.3.1.1			The compliance statement for IP Multicast products which implement the pdnIpMcaseMIB.
pdnIgmpStdExtMIBComplianceV2	1.3.6.1.4.1.1795.2.24.2.47.3.1.2			The compliance statement for Ip products which implement the IGMP protocol.
pdnIgmpStdExtGroups	1.3.6.1.4.1.1795.2.24.2.47.3.2
pdnIgmpStdExtObjGroups	1.3.6.1.4.1.1795.2.24.2.47.3.2.1
pdnIgmpStdExtConfigGroup	1.3.6.1.4.1.1795.2.24.2.47.3.2.1.1			Objects grouped for configuring IP Multicast and IGMP parameters.
pdnIgmpStdExtStatsGroup	1.3.6.1.4.1.1795.2.24.2.47.3.2.1.2			Objects grouped for IP Multicast and IGMP Statistics.
pdnIgmpStdExtGeneralConfigGroup	1.3.6.1.4.1.1795.2.24.2.47.3.2.1.3			Objects grouped for general configuring of IP Multicast and IGMP parameters. This group has been deprecated in favor of pdnIgmpStdExtGeneralConfigGroupV2.
pdnIgmpStdExtGeneralConfigGroupV2	1.3.6.1.4.1.1795.2.24.2.47.3.2.1.4			Objects grouped for general configuring of IP Multicast and IGMP parameters.
pdnIgmpStdExtAfnGroups	1.3.6.1.4.1.1795.2.24.2.47.3.2.2
pdnIgmpStdExtNtfyGroups	1.3.6.1.4.1.1795.2.24.2.47.3.2.3

RFC description

Extends standard IGMP MIB with additional configuration for multicast snooping and group management.

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Download PDN-IGMP-STD-EXT-MIB