CISCOSB-PIM-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsCISCOSB-PIM-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2008-09-25

Category: Routing Protocols, Vendor: RADLAN/Cisco SB

Description: Manages Cisco Small Business PIM (Protocol Independent Multicast) routing configuration and neighbor state.

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What Is CISCOSB-PIM-MIB?

CISCOSB-PIM-MIB manages Protocol Independent Multicast (PIM) routing configuration and neighbor state on Cisco Small Business switches/routers, supporting IP multicast forwarding across VLANs/interfaces. It exposes per-interface PIM configuration and operational data, including administrative and operational status, whether the interface is a stub, neighbor count, and limits/thresholds/stored-state counts for (*,G) and (S,G) multicast forwarding-state entries. Its monitoring value centers on multicast routing health: operational status reveals whether PIM is actually running on an interface versus just admin-enabled, neighbor count confirms expected PIM adjacencies are up, and the stored-vs-limit/warning-threshold counters flag when an interface is approaching multicast state-table exhaustion, a leading indicator of multicast forwarding failures or a multicast storm. It depends conceptually on the standard PIM protocol and complements standard multicast MIBs like IPMROUTE-STD-MIB, though it is a Cisco private implementation. It is deployed on Cisco Small Business switches/routers running IP multicast applications (e.g., IPTV, video conferencing) across VLANs. Engineers can download the CISCOSB-PIM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCOSB-PIM-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

  • Cisco Small Business switch
  • Cisco Small Business router

Monitoring Examples

Polling rlPimInterfaceTable/rlPimInterfaceEntry shows rlPimInterfaceAdminStatus versus rlPimInterfaceOperStatus for each interface, and rlPimInterfaceNeighborCount confirms expected PIM neighbors are present; an interface with admin-up but oper-down status, or an unexpected drop in neighbor count, signals a PIM adjacency failure. rlPimInterfaceStarGStateStored approaching rlPimInterfaceStarGStateLimit (with rlPimInterfaceStarGStateWarnThold as an early-warning marker) indicates the interface is nearing its (*,G) multicast state capacity, risking dropped multicast groups. rlPimInterfaceSGStateLimit provides the analogous ceiling for source-specific (S,G) state.

What Can Be Monitored

  • PIM interface admin/operational status
  • PIM neighbor count
  • (*,G) multicast state usage vs limit
  • (S,G) multicast state usage vs limit
  • stub interface configuration
Imported Objects

From CISCOSB-MIB

switch001MODULE-IDENTITY

From IANA-RTPROTO-MIB

IANAipRouteProtocol

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength
InetAddressType
InetVersion

From PIM-STD-MIB

pimInterfaceEntryOBJECT-TYPE
pimInterfaceIPVersionOBJECT-TYPE
pimInterfaceIfIndexOBJECT-TYPE
pimNeighborAddressOBJECT-TYPE
pimNeighborAddressTypeOBJECT-TYPE
pimNeighborIfIndexOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using rlPimInterfaceNeighborCount OID:

Select a Cisco Small Business switch/router 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 rlPimInterfaceNeighborCount 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 number of PIM neighbors on this interface. 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 Gauge32-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

RFC description

Cisco Small Business PIM (Protocol Independent Multicast) extension MIB for configuring and monitoring multicast routing.

Start monitoring Cisco Small Business switch/router 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 CISCOSB-PIM-MIB