TN-IPMC-SNOOPING-MIB

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Organization: Transition Networks, Inc.

Last Updated: 2012-07-06

Category: Multicast, Transition Networks Media Converters

Description: Manages Transition Networks IP multicast snooping membership and forwarding state.

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What Is TN-IPMC-SNOOPING-MIB?

TN-IPMC-SNOOPING-MIB is a Transition Networks enterprise MIB for configuring IP multicast (IGMP/MLD) snooping on its managed Ethernet switches. It exposes tnSystemCfgTable for global snooping type, enable, flooding, leave-proxy, and proxy settings plus SSM range configuration, and tnPortCfgTable for per-port snooping configuration. It is used to monitor software/configuration status of multicast forwarding: tnIpmcSnoopingEnabled and per-port settings reveal whether snooping is active where expected, and a misconfigured tnIpmcSnoopingSsmRange or disabled tnIpmcSnoopingLeaveProxyEnabled can explain subscribers missing multicast streams or slow group-leave behavior. It complements standard IGMP/MLD snooping concepts layered on top of the switch's bridging (BRIDGE-MIB) functionality. It is deployed on Transition Networks managed Ethernet switches in enterprise or industrial networks carrying multicast video/streaming traffic, making it a key part of TN-IPMC-SNOOPING-MIB SNMP monitoring in those environments.

IPNetwork Monitor allows you to monitor SNMP objects defined in TN-IPMC-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

Transition Networks managed Ethernet switch

Monitoring Examples

An admin would check tnSystemCfgTable's tnIpmcSnoopingEnabled and tnIpmcSnoopingFloodingEnabled globally, then drill into tnPortCfgTable to confirm snooping is enabled on the specific ports serving multicast subscribers. If viewers report missed channels, tnIpmcSnoopingSsmRange and tnIpmcSnoopingSsmRangePrefix would be checked for a scope mismatch. tnIpmcSnoopingStatisticClear would be used to reset counters before re-testing after a configuration change.

What Can Be Monitored

global IPMC snooping enable/type
flooding enabled state
leave-proxy/proxy enabled state
SSM range configuration
per-port snooping configuration

Imported Objects

From IF-MIB

InterfaceIndex

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength

From Q-BRIDGE-MIB

PortList
VlanId

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus
TruthValue

From TRANSITION-SMI

tnProducts

OBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using tnVlanStatisticQuerierTx OID:

Select a Transition Networks managed Ethernet switch (IGMP/MLD snooping config status) 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 tnVlanStatisticQuerierTx 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 count of transmitted IPMC 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
tnIpmcSnoopingMib	1.3.6.1.4.1.868.2.5.115			The structure of IPMC snooping for the proprietary enterprise.
tnIpmcSnoopingMibNotifications	1.3.6.1.4.1.868.2.5.115.1
tnIpmcSnoopingMibObjects	1.3.6.1.4.1.868.2.5.115.2
tnIpmcSnoopingMgmt	1.3.6.1.4.1.868.2.5.115.2.1
tnSystemCfgInfo	1.3.6.1.4.1.868.2.5.115.2.1.1
tnSystemCfgTable	1.3.6.1.4.1.868.2.5.115.2.1.1.1		not-accessible	Table contains System based configuration information for Ipmc Snooping.
tnSystemCfgEntry	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1		not-accessible	An entry is created for each active port in the device.
TNI tnIpmcSnoopingType	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.1	TnIpmcType	not-accessible	This object indicates whether IGMP or MLD Snooping has been configued for the system.
T/F tnIpmcSnoopingEnabled	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.2	TruthValue	read-write	This object indicates whether IGMP or MLD Snooping has been enabled for the system.
T/F tnIpmcSnoopingFloodingEnabled	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.3	TruthValue	read-write	Enable unregistered IPMCv6 traffic flooding. The flooding control takes effect only when IGMP or MLD Snooping is enabled.When Ipmc Snooping is disabled, unregistered IPMCv4 traffic flooding is always active in spite of this setting.
T/F tnIpmcSnoopingLeaveProxyEnabled	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.4	TruthValue	read-write	Enable Ipmc Leave proxy. This feature can be used to avoid forwarding unnecessary leave messages to the router side.
T/F tnIpmcSnoopingProxyEnabled	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.5	TruthValue	read-write	Enable Ipmc proxy. This feature can be used to avoid forwarding unnecessary join and leave messages to the router side.
IP tnIpmcSnoopingSsmRange	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.6	InetAddress	read-write	SSM (Source-Specific Multicast) Range allows the SSM-aware hosts and routers run the SSM service model for the groups in the address range.
ADR tnIpmcSnoopingSsmRangePrefix	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.7	InetAddressPrefixLength	read-write	Denotes the length of a generic Internet network address prefix.
T/F tnIpmcSnoopingStatisticClear	1.3.6.1.4.1.868.2.5.115.2.1.1.1.1.8	TruthValue	read-write	Clears all Statistics counters.
tnPortCfgInfo	1.3.6.1.4.1.868.2.5.115.2.1.2
tnPortCfgTable	1.3.6.1.4.1.868.2.5.115.2.1.2.1		not-accessible	Table contains Port based configuration information for Ipmc Snooping.
tnPortCfgEntry	1.3.6.1.4.1.868.2.5.115.2.1.2.1.1		not-accessible	An entry is created for each active port in the device.
T/F tnPortRoutePortEnabled	1.3.6.1.4.1.868.2.5.115.2.1.2.1.1.1	TruthValue	read-write	Specify which ports act as router ports. A router port is a port on the Ethernet switch that leads towards the Layer 3 multicast device or Ipmc querier. If an aggregation member port is selected as a router port, the whole aggregation will act as a router port.
T/F tnPortFastLeaveEnabled	1.3.6.1.4.1.868.2.5.115.2.1.2.1.1.2	TruthValue	read-write	Enable the fast leave on the port.
U32 tnPortThrottling	1.3.6.1.4.1.868.2.5.115.2.1.2.1.1.3	Unsigned32	read-write	Enable to limit the number of multicast groups to which a switch port can belong. The range is 1-10 for S3280. 0 means disabled.
tnVlanCfgInfo	1.3.6.1.4.1.868.2.5.115.2.1.3
tnVlanCfgTable	1.3.6.1.4.1.868.2.5.115.2.1.3.1		not-accessible	Table contains VLAN based configuration information for Ipmc Snooping.
tnVlanCfgEntry	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1		not-accessible	An entry is created for each active VLAN in the device
VLA tnVlanIndex	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.1	VlanId	not-accessible	This object indicates the VLAN in which Ipmc Snooping is configured.
T/F tnVlanIpmcSnoopingEnabled	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.2	TruthValue	read-create	When this object is set to 'true' Ipmc Snooping is enabled on this VLAN else disabled.
T/F tnVlanIpmcQuerierEnabled	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.3	TruthValue	read-create	When this object is set to 'true' Ipmc Snooping is enabled on this VLAN else disabled.
INT tnVlanIpmcCompatibility	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.4	INTEGER	read-create	Compatibility is maintained by hosts and routers taking appropriate actions depending on the versions of IGMP or MLD operating on hosts and routers within a network. The allowed selection is IGMP or MLD-Auto, Forced IGMPv1 or MLDv1, Forced IGMPv2 or MLDv2, Forced IGMPv3,default compatibility value is IGMP or MLD-Auto.
U32 tnVlanIpmcSnoopingRV	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.5	Unsigned32	read-create	Robustness Variable. The Robustness Variable allows tuning for the expected packet loss on a network. The allowed range is 1 to 255,default robustness variable value is 2.
U32 tnVlanIpmcSnoopingQI	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.6	Unsigned32	read-create	Query Interval. The Query Interval is the interval between General Queries sent by the Querier. The allowed range is 1 to 31744 seconds,default query interval is 125 seconds.
U32 tnVlanIpmcSnoopingQRI	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.7	Unsigned32	read-create	Query Response Interval. The Maximum Response Delay used to calculate the Maximum Response Code inserted into the periodic General Queries. The allowed range is 0 to 31744 in tenths of seconds, default query response interval is 100 in tenths of seconds (10 seconds).
U32 tnVlanIpmcSnoopingLLQI	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.8	Unsigned32	read-create	Last Member Query Interval. The Last Member Query Time is the time value represented by the Last Member Query Interval, multiplied by the Last Member Query Count. The allowed range is 0 to 31744 in tenths of seconds, default last member query interval is 10 in tenths of seconds (1 second).
U32 tnVlanIpmcSnoopingURI	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.9	Unsigned32	read-create	Unsolicited Report Interval. The Unsolicited Report Interval is the time between repetitions of a host's initial report of membership in a group. The allowed range is 0 to 31744 seconds, default unsolicited report interval is 1 second.
ROW tnVlanIpmcRowStatus	1.3.6.1.4.1.868.2.5.115.2.1.3.1.1.10	RowStatus	read-create	This object indicates RowStatus
tnPortFilterCfgInfo	1.3.6.1.4.1.868.2.5.115.2.1.4
tnPortFilterCfgTable	1.3.6.1.4.1.868.2.5.115.2.1.4.1		not-accessible	Table contains VLAN based configuration information for IGMP or MLD Snooping.
tnPortFilterCfgEntry	1.3.6.1.4.1.868.2.5.115.2.1.4.1.1		not-accessible	An entry is created for each active VLAN in the device
U32 tnPortFilterIfIndex	1.3.6.1.4.1.868.2.5.115.2.1.4.1.1.1	Unsigned32	not-accessible	This object indicates the Port in which IGMP or MLD Snooping is configured.
IP tnPortFilterIpmcIp	1.3.6.1.4.1.868.2.5.115.2.1.4.1.1.2	InetAddress	not-accessible	This object indicates the IP group in which IGMP or MLD Snooping is configured.
ROW tnPortFilterRowStatus	1.3.6.1.4.1.868.2.5.115.2.1.4.1.1.3	RowStatus	read-create	This object indicates RowStatus.
tnPortStatusInfo	1.3.6.1.4.1.868.2.5.115.2.1.5
tnPortStatusTable	1.3.6.1.4.1.868.2.5.115.2.1.5.1		not-accessible	Table contains Port based configuration information for IGMP or MLD Snooping.
tnPortStatusEntry	1.3.6.1.4.1.868.2.5.115.2.1.5.1.1		not-accessible	An entry is created for each active port in the device
T/F tnPortStatusRouteEnabled	1.3.6.1.4.1.868.2.5.115.2.1.5.1.1.1	TruthValue	read-only	Display which ports act as router ports. A router port is a port on the Ethernet switch that leads towards the Layer 3 multicast device or IGMP or MLD querier. Static denotes the specific port is configured to be a router port. Dynamic denotes the specific port is learned to be a router port.
tnVlanStatisticInfo	1.3.6.1.4.1.868.2.5.115.2.1.6
tnVlanStatisticTable	1.3.6.1.4.1.868.2.5.115.2.1.6.1		not-accessible	This contains information about the Ipmc snooping VLAN statistic counter info table.
tnVlanStatisticEntry	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1		not-accessible	This is an entry of the tnVlanStatisticTable.
VLA tnVlanStatisticVlanID	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.1	VlanId	not-accessible	This indicates the VLAN ID of the entry.
TNI tnVlanStatisticQuerierVersion	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.2	TnIpmcVersion	read-only	This indicates working querier version currently in this VLAN.
TNI tnVlanStatisticHostVersion	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.3	TnIpmcVersion	read-only	This indicates working host version currently in this VLAN.
INT tnVlanStatisticQuerierState	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.4	INTEGER	read-only	This indicates the querier status is 'ACTIVE' or 'IDLE'. 'DISABLED' denotes the specific interface is administratively disabled.
C32 tnVlanStatisticQuerierTxEx	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.5	Counter32	read-only	This indicates the count of transmitted IPMC Query packets in this VLAN.
C32 tnVlanStatisticQuerierRx	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.6	Counter32	read-only	This indicates the count of transmitted IPMC Query packets in this VLAN.
C32 tnVlanStatisticV1ReportsRx	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.7	Counter32	read-only	This indicates the count of received IGMPv1 or MLDv1 Query packets in this VLAN.
C32 tnVlanStatisticV2ReportsRx	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.8	Counter32	read-only	This indicates the count of received IGMPv2 or MLDv2 Query packets in this VLAN.
C32 tnVlanStatisticV3ReportsRx	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.9	Counter32	read-only	This indicates the count of received IGMPv3 Query packets in this VLAN.
C32 tnVlanStatisticLeavesRx	1.3.6.1.4.1.868.2.5.115.2.1.6.1.1.10	Counter32	read-only	This indicates the count of received IPMC(IGMPv2 or MLDv1) Leaves packets in this VLAN.
tnIpmcGroupInfo	1.3.6.1.4.1.868.2.5.115.2.1.7
tnIpmcGroupTable	1.3.6.1.4.1.868.2.5.115.2.1.7.1		not-accessible	Table containing multicast group address information for IGMP or MLD Snooping.
tnIpmcGroupEntry	1.3.6.1.4.1.868.2.5.115.2.1.7.1.1		not-accessible	An entry is created by IGMP or MLD Snooping for each group learned in the VLAN.
VLA tnIpmcGroupVlanIndex	1.3.6.1.4.1.868.2.5.115.2.1.7.1.1.1	VlanId	not-accessible	This object indicates the VLAN in which the group is learned.
IP tnIpmcGroupAddress	1.3.6.1.4.1.868.2.5.115.2.1.7.1.1.2	InetAddress	not-accessible	This object indicates IP multicast address learned by IGMP or MLD Snooping.
POR tnIpmcGroupPortList	1.3.6.1.4.1.868.2.5.115.2.1.7.1.1.3	PortList	read-only	This object indicates the set of ports on which IPMC Membership Reports are received for the group indicating interest to receive traffic sent to the group.
tnIpmcSfmInfo	1.3.6.1.4.1.868.2.5.115.2.1.8
tnIpmcSfmTable	1.3.6.1.4.1.868.2.5.115.2.1.8.1		not-accessible	Table containing multicast group address information for IGMP or MLD Snooping.
tnIpmcSfmEntry	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1		not-accessible	An entry is created by IPMC Snooping for each group learned in the VLAN.
VLA tnIpmcSfmVlanIndex	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1.1	VlanId	not-accessible	This object indicates the VLAN in which the group is learned.
IP tnIpmcSfmInetAddress	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1.2	InetAddress	not-accessible	This object indicates IP multicast address learned by IPMC Snooping.
NUM tnIpmcSfmPort	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1.3	InterfaceIndex	not-accessible	This object indicates the switch port number.
IP tnIpmcSfmSrcAddress	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1.4	InetAddress	not-accessible	This object indicates IP Address of the source. Currently, system limits the total number of IP source addresses for filtering to be 128.
INT tnIpmcSfmMode	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1.5	INTEGER	read-only	This object indicates the filtering mode maintained per (VLAN ID, port number, Group Address) basis. It can be either Include or Exclude.
INT tnIpmcSfmSrcType	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1.6	INTEGER	read-only	This object indicates the Type. It can be either Allow or Deny.
T/F tnIpmcSfmHardFilter	1.3.6.1.4.1.868.2.5.115.2.1.8.1.1.7	TruthValue	read-only	This object indicates Indicates whether data plane destined to the specific group address from the source IP address could be handled by chip or not.
tnIpmcSnoopingMibConformance	1.3.6.1.4.1.868.2.5.115.3

RFC description

IP multicast snooping configuration for Transition Networks switching devices.

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