MCAST-SNOOPING-MIB

All MIBs › MCAST-SNOOPING-MIB

Organization: D-Link Corp.

Last Updated: 2008-10-24

Category: Technology: Multicast, Vendor: D-Link

Description: D-Link IGMP/MLD snooping MIB defining objects for per-VLAN multicast group membership snooping on D-Link switches.

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What Is MCAST-SNOOPING-MIB?

This is a D-Link enterprise MIB defining IGMP and MLD snooping objects for per-VLAN multicast group-membership tracking on D-Link switches, in the Layer 2 multicast-switching technology area. It exposes configuration (and implicitly learned-state) data describing which VLANs have snooping enabled and which ports have joined which multicast groups. Its monitoring role is to confirm the snooping feature's operational status per VLAN, helping diagnose multicast traffic flooding to unintended ports or failure to reach subscribed ports. It works alongside the standard IGMP/MLD protocols and is a companion vendor-proprietary MIB to MCAST-PROXY-MIB from the same vendor. It is deployed on D-Link managed switches in LANs carrying multicast traffic such as IPTV or streaming media. Engineers can download the MCAST-SNOOPING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in MCAST-SNOOPING-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 switch
vendor-specific (D-Link) network device

Monitoring Examples

The sample_objects field is empty for this MIB, so no specific table or object names can be cited; typically such a MIB would expose a per-VLAN snooping-enabled flag and a group-membership table mapping multicast group addresses to switch ports, which an operator would check when a multicast stream is flooding to unintended ports or failing to reach subscribed ports.

What Can Be Monitored

per-VLAN IGMP snooping status
per-VLAN MLD snooping status
multicast group membership on ports

Imported Objects

From DLINK-ID-REC-MIB

dlink-common-mgmt

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus

How to Use in IPNetwork Monitor

Example using swMLDSnpVlanCounterTotalRxQuery OID:

Select a D-Link managed switch (IGMP/MLD snooping) 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 swMLDSnpVlanCounterTotalRxQuery 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. This indicates the total count of received MLD Query packets in this VLAN. 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
swMcastSnoopingMIB	1.3.6.1.4.1.171.12.73			The structure of IGMP&MLD snooping for the proprietary enterprise.
swMcastSnoopingCtrl	1.3.6.1.4.1.171.12.73.1
INT swIGMPSnoopingGlobalState	1.3.6.1.4.1.171.12.73.1.1	INTEGER	read-write	This indicates the global state of IGMP snooping.
INT swIGMPSnoopingMaxDataDrivenLearningCount	1.3.6.1.4.1.171.12.73.1.3	INTEGER	read-write	This indicates the Max Data Driven Learning Count of the IGMP snooping.
swMcastSnoopingInfo	1.3.6.1.4.1.171.12.73.2
swIGMPSnoopingInfo	1.3.6.1.4.1.171.12.73.2.1
swIGMPSnoopingForwardingTable	1.3.6.1.4.1.171.12.73.2.1.1		not-accessible	This contains information about the IGMP snooping forwarding info table.
swIGMPSnoopingForwardingEntry	1.3.6.1.4.1.171.12.73.2.1.1.1		not-accessible	This is an entry of the swIGMPSnoopingForwardingTable.
INT swIGMPSnoopingVlanID	1.3.6.1.4.1.171.12.73.2.1.1.1.1	INTEGER	read-only	This indicates the VLAN ID of the IGMP snooping forwarding entry.
IP swIGMPSnpFwdSrcAddr	1.3.6.1.4.1.171.12.73.2.1.1.1.2	IpAddress	read-only	This indicates the source IP Address of the IGMP snooping forwarding entry.
IP swIGMPSnpFwdGrpAddr	1.3.6.1.4.1.171.12.73.2.1.1.1.3	IpAddress	read-only	This indicates the group IP Address of the IGMP snooping forwarding entry.
POR swIGMPSnpFwdMemberPorts	1.3.6.1.4.1.171.12.73.2.1.1.1.4	PortList	read-only	This indicates the member port list of the IGMP snooping forwarding entry.
swIGMPSnoopingGroupTable	1.3.6.1.4.1.171.12.73.2.1.2		not-accessible	This contains information about the IGMP snooping group info table. This table only shows dynamic groups (including data driven learning groups), to show static groups, the swIGMPSnoopingStaticGroupTable should be used.
swIGMPSnoopingGroupEntry	1.3.6.1.4.1.171.12.73.2.1.2.1		not-accessible	This is an entry of the swIGMPSnoopingGroupTable.
IP swIGMPSnpGrpSrcAddr	1.3.6.1.4.1.171.12.73.2.1.2.1.1	IpAddress	read-only	This indicates the source IP Address of the IGMP snooping group entry.
IP swIGMPSnpGrpGrpAddr	1.3.6.1.4.1.171.12.73.2.1.2.1.2	IpAddress	read-only	This indicates the group IP Address of the IGMP snooping group entry.
POR swIGMPSnpGrpIncludeMemberPorts	1.3.6.1.4.1.171.12.73.2.1.2.1.3	PortList	read-only	This indicates the list of member ports in Include mode for the IGMP snooping group entry. For data driven groups, this object should be 0.
POR swIGMPSnpGrpExcludeMemberPorts	1.3.6.1.4.1.171.12.73.2.1.2.1.4	PortList	read-only	This indicates the list of member ports in Exclude mode for the IGMP snooping group entry. For data driven groups, this object should be 0.
POR swIGMPSnpGrpRouterPorts	1.3.6.1.4.1.171.12.73.2.1.2.1.5	PortList	read-only	This indicates the router port list of the IGMP snooping group entry. This is only used for data driven learning groups. For normal groups, this object should be 0.
INT swIGMPSnpGrpUpTime	1.3.6.1.4.1.171.12.73.2.1.2.1.6	INTEGER	read-only	This indicates the time passed since this group was created.
INT swIGMPSnpGrpExpiryTime	1.3.6.1.4.1.171.12.73.2.1.2.1.7	INTEGER	read-only	This indicates the time left until this group will be deleted.
INT swIGMPSnpGrpReportCount	1.3.6.1.4.1.171.12.73.2.1.2.1.8	INTEGER	read-only	This indicates the number of reports received for this group entry.
swMLDSnoopingInfo	1.3.6.1.4.1.171.12.73.2.2
swMLDSnoopingForwardingTable	1.3.6.1.4.1.171.12.73.2.2.1		not-accessible	This contains information about the MLD snooping forwarding info table.
swMLDSnoopingForwardingEntry	1.3.6.1.4.1.171.12.73.2.2.1.1		not-accessible	This is an entry of the swMLDSnoopingForwardingTable.
INT swMLDSnoopingVlanID	1.3.6.1.4.1.171.12.73.2.2.1.1.1	INTEGER	read-only	This indicates the VLAN ID of the MLD snooping forwarding entry.
ADR swMLDSnpFwdSrcAddr	1.3.6.1.4.1.171.12.73.2.2.1.1.2	Ipv6Address	read-only	This indicates the source IP Address of the MLD snooping forwarding entry.
ADR swMLDSnpFwdGrpAddr	1.3.6.1.4.1.171.12.73.2.2.1.1.3	Ipv6Address	read-only	This indicates the group IP Address of the MLD snooping forwarding entry.
POR swMLDSnpFwdMemberPorts	1.3.6.1.4.1.171.12.73.2.2.1.1.4	PortList	read-only	This indicates the member port list of the MLD snooping forwarding entry.
swMLDSnoopingVlanStatisticCounterTable	1.3.6.1.4.1.171.12.73.2.2.3		not-accessible	This contains information about the MLD snooping VLAN statistic counter info table.
swMLDSnoopingVlanStatisticCounterEntry	1.3.6.1.4.1.171.12.73.2.2.3.1		not-accessible	This is an entry of the swMLDSnoopingVlanStatisticCounterTable.
C32 swMLDSnpVlanCounterTotalRxQueryEx	1.3.6.1.4.1.171.12.73.2.2.3.1.20	Counter32	read-only	This indicates the total count of received MLD Query packets in this VLAN.
swMcastSnoopingMgmt	1.3.6.1.4.1.171.12.73.3
swIGMPSnoopingMgmt	1.3.6.1.4.1.171.12.73.3.1
swIGMPSnoopingCtrlTable	1.3.6.1.4.1.171.12.73.3.1.1		not-accessible	The table controls the VLAN's IGMP Snooping function.
swIGMPSnoopingCtrlEntry	1.3.6.1.4.1.171.12.73.3.1.1.1		not-accessible	This is an entry of the swIGMPSnoopingCtrlTable.
INT swIGMPSnpCtrlQueryInterval	1.3.6.1.4.1.171.12.73.3.1.1.1.5	INTEGER	read-write	This indicates the Query Interval of the IGMP snooping in this VLAN. The default value is 125.
INT swIGMPSnpCtrlMaxResponseTime	1.3.6.1.4.1.171.12.73.3.1.1.1.10	INTEGER	read-write	This indicates the Max Response Time of the IGMP snooping in this VLAN. The default value is 10.
INT swIGMPSnpCtrlRobustnessValue	1.3.6.1.4.1.171.12.73.3.1.1.1.15	INTEGER	read-write	This indicates the Robustness Value of the IGMP snooping in this VLAN. The default value is 2.
INT swIGMPSnpCtrlLastMemberQueryInterval	1.3.6.1.4.1.171.12.73.3.1.1.1.20	INTEGER	read-write	This indicates the Last Member Query Interval of the IGMP snooping in this VLAN. The default value is 1.
INT swIGMPSnpCtrlQuerierState	1.3.6.1.4.1.171.12.73.3.1.1.1.25	INTEGER	read-write	This indicates the IGMP snooping state of this VLAN.
INT swIGMPSnpCtrlQuerierRole	1.3.6.1.4.1.171.12.73.3.1.1.1.30	INTEGER	read-only	This indicates the Querier role of this VLAN.
IP swIGMPSnpCtrlQuerierIP	1.3.6.1.4.1.171.12.73.3.1.1.1.35	IpAddress	read-only	This indicates the Querier's IP address of the IGMP snooping in this VLAN.
INT swIGMPSnpCtrlQuerierExpiryTime	1.3.6.1.4.1.171.12.73.3.1.1.1.40	INTEGER	read-only	This indicates the Querier Expiry Time of this VLAN.
INT swIGMPSnpCtrlState	1.3.6.1.4.1.171.12.73.3.1.1.1.45	INTEGER	read-write	This indicates the IGMP Snooping State of this VLAN.
INT swIGMPSnpCtrlFastLeaveState	1.3.6.1.4.1.171.12.73.3.1.1.1.50	INTEGER	read-write	This indicates the Fast Leave State of this VLAN.
INT swIGMPSnpCtrlVersion	1.3.6.1.4.1.171.12.73.3.1.1.1.60	INTEGER	read-write	This indicates the Version of IGMP Snooping in this VLAN.
INT swIGMPSnpCtrlDataDrivenLearningAgedOutState	1.3.6.1.4.1.171.12.73.3.1.1.1.70	INTEGER	read-write	This indicates the Data Driven Learning Aged Out State of this VLAN.
swIGMPSnoopingDataDrivenLearningGroupTable	1.3.6.1.4.1.171.12.73.3.1.3		not-accessible	The table controls the VLAN's IGMP Snooping data driven learning group function.
swIGMPSnoopingDataDrivenLearningGroupEntry	1.3.6.1.4.1.171.12.73.3.1.3.1		not-accessible	This is an entry of the swIGMPSnoopingDataDrivenLearningGroupTable.
IP swIGMPSnpDataDrivenLearningGrpGrpAddr	1.3.6.1.4.1.171.12.73.3.1.3.1.1	IpAddress	read-only	This indicates the group address of the IGMP snooping data driven learning group table.
POR swIGMPSnpDataDrivenLearningGrpRouterPorts	1.3.6.1.4.1.171.12.73.3.1.3.1.2	PortList	read-only	This indicates the router port list of the IGMP snooping data driven learning group table.
INT swIGMPSnpDataDrivenLearningGrpUpTime	1.3.6.1.4.1.171.12.73.3.1.3.1.3	INTEGER	read-only	This indicates the time passed since this group was created.
INT swIGMPSnpDataDrivenLearningGrpExpiryTime	1.3.6.1.4.1.171.12.73.3.1.3.1.4	INTEGER	read-only	This indicates the time left before this group will be deleted.
INT swIGMPSnpDataDrivenLearningGrpClearGrp	1.3.6.1.4.1.171.12.73.3.1.3.1.100	INTEGER	read-write	When set to clear, this data driven learning group will be deleted.
swIGMPSnoopingRouterPortTable	1.3.6.1.4.1.171.12.73.3.1.4		not-accessible	The table controls the VLAN's IGMP Snooping router port list function.
swIGMPSnoopingRouterPortEntry	1.3.6.1.4.1.171.12.73.3.1.4.1		not-accessible	This is an entry of the swIGMPSnoopingRouterPortTable.
POR swIGMPSnpStaticRouterPorts	1.3.6.1.4.1.171.12.73.3.1.4.1.5	PortList	read-write	This indicates the static router port list of the IGMP snooping router ports table.
POR swIGMPSnpDynamicRouterPorts	1.3.6.1.4.1.171.12.73.3.1.4.1.10	PortList	read-only	This indicates the dynamic router port list of the IGMP snooping router ports table.
POR swIGMPSnpForbiddenRouterPorts	1.3.6.1.4.1.171.12.73.3.1.4.1.15	PortList	read-write	This indicates the forbidden router port list of the IGMP snooping router ports table.

RFC description

IGMP and MLD snooping control for D-Link switches with multicast group membership management.

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Download MCAST-SNOOPING-MIB