IGMPV3-MIB

All MIBs › IGMPV3-MIB

Organization: D-Link Corp

Last Updated: 2010-11-08

Category: IP and Core Protocols, Technology: Multicast

Description: D-Link MIB for IGMPv3 (Internet Group Management Protocol version 3) management including source-specific multicast group membership.

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What Is IGMPV3-MIB?

This IGMPV3-MIB (also referred to as the MGMD MIB) is a D-Link-implemented module combining RFC 2933 and RFC 3019, extended to cover IGMPv3 and MLDv2 source-filtering behavior on multicast-capable switches and routers. It exposes per-interface multicast querier configuration and status, including querier type, query interval, query max-response-time, robustness, protocol version in use, and how long the current querier has been up or until its role expires. The data is oriented toward monitoring the software/protocol status of the multicast routing function on a device — whether an interface is acting as IGMP querier, which protocol version it's negotiated to, and how stable that querier role has been (uptime versus expiry). It builds directly on the IETF's RFC 2933/3019 IGMP MIB framework, adding IGMPv3/MLDv2-specific semantics on top of that base. It is typically deployed on Layer 3 switches and routers in networks running IPTV or other multicast applications where administrators need visibility into multicast querier health and configuration. Administrators searching for igmpv3 snooping use this D-Link MIB to monitor IGMPv3 snooping state on D-Link switches via SNMP.

IPNetwork Monitor allows you to monitor SNMP objects defined in IGMPV3-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

D-Link managed Layer 3 switch/router
multicast-capable network switch

Monitoring Examples

An administrator would poll mgmdRouterInterfaceTable/mgmdRouterInterfaceEntry, keyed by ifIndex, to read mgmdRouterInterfaceQuerier and mgmdRouterInterfaceQuerierType and confirm which device is acting as IGMP querier on a given VLAN. mgmdRouterInterfaceQuerierUpTime and mgmdRouterInterfaceQuerierExpiryTime reveal whether the querier role is stable or about to fail over, which is useful when multicast streams unexpectedly interrupt. mgmdRouterInterfaceVersion confirms whether the interface has negotiated IGMPv3 versus an older version, and mgmdRouterInterfaceStatus shows whether the row/interface is active.

What Can Be Monitored

IGMP querier status per interface
IGMP protocol version in use
query interval/max response time
querier uptime
querier role expiry time
robustness variable

Imported Objects

From DLINK-ID-REC-MIB

dlink-common-mgmt

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32
mib-2

From SNMPv2-TC

RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
swIgmpMIB	1.3.6.1.4.1.171.12.18			New version of MGMD combining RFC 2933 and RFC 3019. Includes IGMPv3 and MLDv2 source filtering changes.
swIgmpMIBObjects	1.3.6.1.4.1.171.12.18.1
mgmdRouterInterfaceTable	1.3.6.1.4.1.171.12.18.1.4		not-accessible	The (conceptual) table listing the interfaces on which IGMP or MLD is enabled.
mgmdRouterInterfaceEntry	1.3.6.1.4.1.171.12.18.1.4.1		not-accessible	An entry (conceptual row) representing an interface on which IGMP or MLD is enabled.
NUM mgmdRouterInterfaceIfIndex	1.3.6.1.4.1.171.12.18.1.4.1.1	InterfaceIndex	not-accessible	The ifIndex value of the interface for which IGMP or MLD is enabled. The table is indexed by the ifIndex value and the InetAddressType to allow for interfaces which may be configured in both IPv4 and IPv6 modes.
IPt mgmdRouterInterfaceQuerierType	1.3.6.1.4.1.171.12.18.1.4.1.2	InetAddressType	not-accessible	The address type of this interface. This entry along with the ifIndex value acts as the index to the mgmdRouterInterface table. A physical interface may be configured in multiple modes concurrently, e.g. in IPv4 and IPv6 modes connected to the same interface, however the traffic is considered to be logically separate.
IP mgmdRouterInterfaceQuerier	1.3.6.1.4.1.171.12.18.1.4.1.3	InetAddress	read-only	The address of the IGMP or MLD Querier on the IP subnet to which this interface is attached. The InetAddressType, e.g. IPv4 or IPv6, is identified by the mgmdRouterInterfaceQuerierType variable in the mgmdRouterInterface table.
U32 mgmdRouterInterfaceQueryInterval	1.3.6.1.4.1.171.12.18.1.4.1.4	Unsigned32	read-create	The frequency at which IGMP or MLD Host-Query packets are transmitted on this interface.
ROW mgmdRouterInterfaceStatus	1.3.6.1.4.1.171.12.18.1.4.1.5	RowStatus	read-create	The activation of a row enables the router side of IGMP or MLD on the interface. The destruction of a row disables the router side of IGMP or MLD on the interface.
U32 mgmdRouterInterfaceVersion	1.3.6.1.4.1.171.12.18.1.4.1.6	Unsigned32	read-create	The version of MGMD which is running on this interface. Value 1 applies to IGMPv1 routers only. Value 2 applies To IGMPv2 and MLDv1 routers, and value 3 applies to IGMPv3 and MLDv2 routers. This object can be used to configure a router capable of running either version. For IGMP and MLD to function correctly, all routers on a LAN must be configured to run the same version on that LAN.
U32 mgmdRouterInterfaceQueryMaxResponseTime	1.3.6.1.4.1.171.12.18.1.4.1.7	Unsigned32	read-create	The maximum query response time advertised in MGMDv2 or v3 queries on this interface.
TIK mgmdRouterInterfaceQuerierUpTime	1.3.6.1.4.1.171.12.18.1.4.1.8	TimeTicks	read-only	The time since mgmdRouterInterfaceQuerier was last changed.
TIK mgmdRouterInterfaceQuerierExpiryTime	1.3.6.1.4.1.171.12.18.1.4.1.9	TimeTicks	read-only	The amount of time remaining before the Other Querier Present Timer expires. If the local system is the querier, the value of this object is zero.
U32 mgmdRouterInterfaceRobustness	1.3.6.1.4.1.171.12.18.1.4.1.14	Unsigned32	read-create	The Robustness Variable allows tuning for the expected packet loss on a subnet. If a subnet is expected to be lossy, the Robustness Variable may be increased. IGMP and MLD is robust to (Robustness Variable-1) packet losses.
U32 mgmdRouterInterfaceLastMembQueryIntvl	1.3.6.1.4.1.171.12.18.1.4.1.15	Unsigned32	read-create	The Last Member Query Interval is the Max Response Time inserted into Group-Specific Queries sent in response to Leave Group messages, and is also the amount of time Between Group-Specific Query messages. This value may be tuned to modify the leave latency of the network. A reduced value results in reduced time to detect the loss of the last member of a group. The value of this object is irrelevant if mgmdRouterInterfaceVersion is 1.
mgmdRouterCacheTable	1.3.6.1.4.1.171.12.18.1.6		not-accessible	The (conceptual) table listing the IP multicast groups for which there are members on a particular router interface.
mgmdRouterCacheEntry	1.3.6.1.4.1.171.12.18.1.6.1		not-accessible	An entry (conceptual row) in the mgmdRouterCacheTable.
IPt mgmdRouterCacheAddressType	1.3.6.1.4.1.171.12.18.1.6.1.1	InetAddressType	read-only	The address type of the mgmdRouterCacheTable entry. This value applies to both the mgmdRouterCacheAddress and the mgmdRouterCacheLastReporter entries.
NUM mgmdRouterCacheIfIndex	1.3.6.1.4.1.171.12.18.1.6.1.2	InterfaceIndex	not-accessible	The interface for which this entry contains information for an IP multicast group address.
IP mgmdRouterCacheAddress	1.3.6.1.4.1.171.12.18.1.6.1.3	InetAddress	not-accessible	The IP multicast group address for which this entry contains information. The InetAddressType, e.g. IPv4 or IPv6, is identified by the mgmdRouterCacheAddresType variable in the mgmdRouterCache table.
IP mgmdRouterCacheLastReporter	1.3.6.1.4.1.171.12.18.1.6.1.4	InetAddress	read-only	The IP address of the source of the last membership report received for this IP Multicast group address on this interface. If no membership report has been received, this object has the value 0::0. The InetAddressType, e.g. IPv4 or IPv6, is identified by the mgmdRouterCacheAddresType variable in the mgmdRouterCache table.
TIK mgmdRouterCacheExpiryTime	1.3.6.1.4.1.171.12.18.1.6.1.6	TimeTicks	read-only	In IGMPv2, this object represent minimum amount of time remaining before this entry will be aged out. The value must always be greater than 0. In IGMPv3, this obbject represent minimum amount of time remaining before the object mgmdRouterCacheSourceFilterMode will change from exclude(2) to include(1). If value of the object mgmdRouterCacheSourceFilterMode is include(1), the value must be 0.
ROW mgmdRouterCacheStatus	1.3.6.1.4.1.171.12.18.1.6.1.7	RowStatus	read-create	The status of this row. Enabling the entry makes this router an active member of the group on the interface defined by mgmdRouterCacheIfIndex. Disabling the entry forces the router interface to leave the group.
TIK mgmdRouterCacheVersion1HostTimer	1.3.6.1.4.1.171.12.18.1.6.1.8	TimeTicks	read-only	The time remaining until the local router will assume that there are no longer any MGMD version 1 members on the IP subnet attached to this interface. This entry only applies to IGMPv1 hosts, and is not implemented for MLD. Upon hearing any MGMDv1 Membership Report (IGMPv1 only), this value is reset to the group membership timer. While this time remaining is non-zero, the local router ignores any MGMDv2 Leave messages (IGMPv2 only) for this group that it receives on this interface.
TIK mgmdRouterCacheVersion2HostTimer	1.3.6.1.4.1.171.12.18.1.6.1.9	TimeTicks	read-only	The time remaining until the local router will assume that there are no longer any MGMD version 2 members on the IP subnet attached to this interface. This entry applies to both IGMP and MLD hosts. Upon hearing any MGMDv2 Membership Report, this value is reset to the group membership timer. Assuming no MGMDv1 hosts have been detected, the local router does not ignore any MGMDv2 Leave messages for this group that it receives on this interface.
INT mgmdRouterCacheSourceFilterMode	1.3.6.1.4.1.171.12.18.1.6.1.10	INTEGER	read-only	The state in which the interface is currently set. The value indicates the relevance of the corresponding source list entries in the RouterSrcList Table for MGMDv3 interfaces.
mgmdRouterSrcListTable	1.3.6.1.4.1.171.12.18.1.10		not-accessible	The (conceptual) table listing the Source List entries corresponding to each Interface filter mode record on a Router.
mgmdRouterSrcListEntry	1.3.6.1.4.1.171.12.18.1.10.1		not-accessible	An entry (conceptual row) in the mgmdRouterSrcListTable.
IPt mgmdRouterSrcListAddressType	1.3.6.1.4.1.171.12.18.1.10.1.1	InetAddressType	read-only	The address type of the InetAddress variables in this table. This value applies to the mgmdRouterSrcListHostAddress and mgmdRouterSrcListAddress entries.
NUM mgmdRouterSrcListIfIndex	1.3.6.1.4.1.171.12.18.1.10.1.2	InterfaceIndex	read-only	The interface for which this entry contains information for an IP multicast group address.
IP mgmdRouterSrcListAddress	1.3.6.1.4.1.171.12.18.1.10.1.3	InetAddress	read-only	The IP multicast group address for which this entry contains information.
IP mgmdRouterSrcListHostAddress	1.3.6.1.4.1.171.12.18.1.10.1.4	InetAddress	read-only	The host address to which this entry corresponds. The mgmdRouterCacheSourceFilterMode value for this Group address and interface indicates whether this Host address is included or excluded.
TIK mgmdRouterSrcListExpire	1.3.6.1.4.1.171.12.18.1.10.1.5	TimeTicks	read-only	This value indicates the relevance of the SrcList entry, whereby a non-zero value indicates this is an INCLUDE state value, and a zero value indicates this to be an EXCLUDE state value.
mgmdRouterChkSubSrcNetTable	1.3.6.1.4.1.171.12.18.1.11		not-accessible	The (conceptual) table listing the interfaces whether to check subscriber source network when receive IGMP report/leave.
mgmdRouterChkSubSrcNetEntry	1.3.6.1.4.1.171.12.18.1.11.1		not-accessible	An entry (conceptual row) in the mgmdRouterChkSubSrcNetTable.
NUM mgmdRouterChkSubSrcNetIfIndex	1.3.6.1.4.1.171.12.18.1.11.1.1	InterfaceIndex	not-accessible	A unique value for the specified interface.
IP mgmdRouterChkSubSrcNetIpAddr	1.3.6.1.4.1.171.12.18.1.11.1.2	IpAddress	read-only	The IP address of the interface.
IP mgmdRouterChkSubSrcNetIpNetMask	1.3.6.1.4.1.171.12.18.1.11.1.3	IpAddress	read-only	The subnet mask of the interface.
INT mgmdRouterChkSubSrcNetState	1.3.6.1.4.1.171.12.18.1.11.1.4	INTEGER	read-write	The state of the specified interface whether to check subscriber source IP when receive IGMP report/leave.
mgmdRouterIGMPStaticGroupTable	1.3.6.1.4.1.171.12.18.1.12		not-accessible	The (conceptual) table listing the static IP multicast groups for which there are members on a particular router interface.
mgmdRouterIGMPStaticGroupEntry	1.3.6.1.4.1.171.12.18.1.12.1		not-accessible	An entry (conceptual row) in the mgmdRouterIGMPStaticGroupTable.
NUM mgmdRouterIGMPStaticGroupIfIndex	1.3.6.1.4.1.171.12.18.1.12.1.1	InterfaceIndex	not-accessible	The interface for which this entry contains information for a static IP multicast group address.
IP mgmdRouterIGMPStaticGroupIpAddr	1.3.6.1.4.1.171.12.18.1.12.1.2	IpAddress	not-accessible	The IP multicast group address for which this entry contains information.
ROW mgmdRouterIGMPStaticGroupRowStatus	1.3.6.1.4.1.171.12.18.1.12.1.3	RowStatus	read-create	This object indicates the status of this static IP multicast entry.

RFC description

IGMPv3 and MLDv2 source filtering MIB for managing multicast group memberships on switches.

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Download IGMPV3-MIB

What Is IGMPV3-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description