SW-IGMP-MIB

All MIBs › SW-IGMP-MIB

Category: Switch Management - D-Link

Description: Manages IGMP snooping configuration, group membership, and multicast forwarding on switch ports.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is SW-IGMP-MIB?

SW-IGMP-MIB is a switch-vendor MIB for managing IGMP snooping, a Layer 2 feature that lets a switch inspect IGMP multicast group membership traffic to restrict multicast forwarding to only the ports with interested receivers. It exposes configuration for enabling or disabling IGMP snooping, the learned multicast group membership state, and the resulting multicast forwarding entries per port or VLAN. Monitoring it confirms the software feature is active and functioning correctly, revealing problems such as multicast flooding across all ports (when snooping silently fails) or stale/missing group memberships that indicate a control-plane fault. It builds on the standard IGMP protocol concepts even though it is implemented here as a vendor-specific switch extension rather than the IETF IGMP MIB itself. It is typically deployed on managed switches carrying IPTV, video conferencing, or other multicast-heavy traffic where efficient, loop-free multicast delivery must be verified. Engineers can download the SW-IGMP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SW-IGMP-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 ES2000 'Golf' series managed switch (Marconi enterprise OID branding)

Monitoring Examples

No concrete object or table names were provided in the sampled source for this MIB. Typically an admin would poll this MIB's per-port or per-VLAN snooping-enable objects to confirm IGMP snooping is active, and check the learned multicast group membership table to verify expected receivers are registered. Unexpected multicast flooding to ports with no registered members would indicate the snooping feature has failed or was disabled.

What Can Be Monitored

IGMP snooping enable/disable state
learned multicast group membership
multicast forwarding table entries
per-port/VLAN snooping status

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

IpAddress
enterprises

OIDs

OID symbolic	OID numeric	Type	Access	Description
marconi	1.3.6.1.4.1.326
systems	1.3.6.1.4.1.326.2
external	1.3.6.1.4.1.326.2.20
dlink	1.3.6.1.4.1.326.2.20.1
dlinkcommon	1.3.6.1.4.1.326.2.20.1.1
golf	1.3.6.1.4.1.326.2.20.1.2
golfproducts	1.3.6.1.4.1.326.2.20.1.2.1
es2000	1.3.6.1.4.1.326.2.20.1.2.1.3
golfcommon	1.3.6.1.4.1.326.2.20.1.2.2
marconi_mgmt	1.3.6.1.4.1.326.2.20.1.2.2.2
es2000Mgmt	1.3.6.1.4.1.326.2.20.1.2.2.2.28
swL2Mgmt	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2
swIGMP	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7
swIGMPCtrl	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.1
INT swIGMPAdminState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.1.1	INTEGER	read-write	This object allows the user to enable/disable the IGMP snooping function. The IGMP function provided by the device includes both v1 and v2.
INT swIGMPTimeout	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.1.2	INTEGER	read-write	The timeout value for sending IGMP query packet when no one was sent by the multicast router in the lan. The device will actively send the query message.
swIGMPInfoTable	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.2		not-accessible	The table contains the number current IGMP query packets which is captured by this device, as well as the IGMP query packets sent by the device.
swIGMPInfoEntry	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.2.1		not-accessible	Information about current IGMP query information, provided that swDevIGMPCaptureState and swIGMPCtrlState of associated VLAN entry are all enabled.
INT swIGMPInfoIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.2.1.1	INTEGER	read-only	This object indicates the IGMP query information entry number. It could be up to 12 entries, depending on current number of VLAN entries.
INT swIGMPInfoVid	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.2.1.2	INTEGER	read-only	This object indicates the Vid of associated IGMP info table entry. It follows swIGMPCtrlVid in the associated entry of IGMP control table (swIGMPCtrlTable).
INT swIGMPInfoQueryCount	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.2.1.3	INTEGER	read-only	This object indicates the number of query packets received since the IGMP function enabled, in per-VLAN basis.
INT swIGMPInfoTxQueryCount	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.2.1.4	INTEGER	read-only	This object indicates the send count of IGMP query messages, in per-VLAN basis. In case of IGMP timer expiration, the switch sends IGMP query packets to related VLAN member ports and increment this object by 1.
swIGMPTable	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.3		not-accessible	This table contains information regarding to the IGMP group membership report received by each port. The system will use the information recorded in this table to forward the multicast packet to those ports which have group membership. Since packets will not be forwarded to necessary ports, the network bandwith can thus be saved.
swIGMPEntry	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.3.1		not-accessible	Each entry describes the ports which are member of a specific group address. Note that when a specific multicast address existing in the table also exist in the filter table, the filter table has higher priority over this table.
INT swIGMPVid	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.3.1.1	INTEGER	read-only	This object indicates the Vid of individual IGMP table entry. It shows the Vid of IGMP report information captured on network.
IP swIGMPGroupIpAddr	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.3.1.2	IpAddress	read-only	A IP multicast group address which has port membership in the underlying network.
MAC swIGMPGroupMacAddr	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.3.1.3	MacAddress	read-only	The multicast MAC address corresponds to swIGMPGroupIpAddr.
POR swIGMPPortMap	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.3.1.4	PortList	read-only	Indicates the set of ports which are members of this multicast group. These ports are represented by a octet string.The most significant bit represents the lowest numbered port, and the least significant bit represents the highest numbered port.
INT swIGMPIpGroupReportCount	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.3.1.5	INTEGER	read-only	Indicates the number of group membership report packets received by the device corresponding to this multicast group.
swIGMPCtrlTable	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.4		not-accessible	The table controls the Vlan's IGMP function. Its scale depends on current VLAN state (swVlanInfoStatus). If VLAN is disabled or in Mac-Base mode, there is only one entry in the table, with index 1. If VLAN is in Port-Base or 802.1q mode, the number of entries can be up to 12, with index range from 1 to 12.
swIGMPCtrlEntry	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.4.1		not-accessible	The entry in IGMP control table (swIGMPCtrlTable). The entry is effective only when IGMP capture switch is enabled.
INT swIGMPCtrlIndex	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.4.1.1	INTEGER	read-only	This object indicates the IGMP control entry number.Its scale depends on current VLAN state (es400VlanInfoStatus). If VLAN is disabled or in Mac-Base mode, there is only one entry in the table, with index 1. If VLAN is in Port-Base or 802.1q mode, the number of entries is 12, with index range from 1 to 12.
INT swIGMPCtrlVid	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.4.1.2	INTEGER	read-write	This object indicates the IGMP control entry's VLAN id. If VLAN is disabled or in Mac-Base mode, the Vid is always 0 and cannot be changed by management users. If VLAN is in Port-Base mode, the Vid is arranged from 1 to 12 , fixed form. If VLAN is in 802.1q mode, the Vid setting can vary from 1 to 4094 by management user, and the Vid in each entry must be unique in the IGMP Control Table.
INT swIGMPCtrlTimer	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.4.1.3	INTEGER	read-write	The timer value for sending IGMP query packet when none was sent by the multicast router in the LAN. The timer works in per-VLAN basis. Our device will be activated to send the query message if the timer is expired. Please reference RFC2236-1997. And it recommends a default of 125 seconds. The timeout value must be at least 30 seconds.
INT swIGMPCtrlState	1.3.6.1.4.1.326.2.20.1.2.2.2.28.2.7.4.1.4	INTEGER	read-write	This object indicates the status of this entry. other(1) - This entry is currently in use but the conditions under which it will remain so are different from each of the following values. disable(2) - IGMP funtion is disabled for this entry. enable(3) - IGMP funtion is enabled for this entry. deleted(4) - IGMP entry is deleted.

RFC description

D-Link switch IGMP snooping control and monitoring for multicast group management.

Start monitoring D-Link ES2000 'Golf' series switch (Marconi-branded OEM, IGMP snooping config) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download SW-IGMP-MIB

What Is SW-IGMP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description