CISCO-ITP-MLR-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-ITP-MLR-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2004-09-22

Category: Cisco Devices, SNA and Legacy Protocols

Description: Manages ITP Multi-Layer Routing rules for SS7 message routing based on content above MTP3.

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What Is CISCO-ITP-MLR-MIB?

CISCO-ITP-MLR-MIB is a Cisco-specific module for the Cisco ITP (Internetworking Transport Point) platform, covering the Multi-Layer Routing (MLR) feature used to route SS7 signaling messages based on content found above the MTP3 layer, such as SCCP, TCAP, MAP, and MAP-user fields (e.g., origination/destination SME addresses). It exposes configuration and operational data about MLR routing rule tables and instances, including when a routing table was last loaded, from what URL, and its load status, as well as counters for routed, aborted, and continued message decisions and separate SMS mobile-originated/mobile-terminated counts. CISCO-ITP-MLR-MIB SNMP monitoring in practice centers on rule-table load status and message-routing counters rather than any physical hardware sensor: operators check whether the latest MLR rule table loaded successfully, when it was last changed/loaded, and whether message routing counters (routed vs. aborted) indicate healthy or problematic message processing. It depends on Cisco's broader ITP/SS7 MIB family and on standard SS7/SIGTRAN concepts (SCCP, TCAP, MAP) for its data semantics. It is deployed on Cisco ITP nodes used by telecom carriers as SS7-over-IP signaling gateways/routers.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-ITP-MLR-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 ITP (Internetworking Transport Point)
  • Cisco SS7 signaling gateway/router platforms

Monitoring Examples

An operator would poll cmlrInstTable/cmlrInstTableEntry to check cmlrInstLoadStatus and cmlrInstLastLoadTime for each MLR instance, confirming that the routing rules loaded from cmlrInstLastURL succeeded and are current. Watching cmlrInstAbortCounts rise relative to cmlrInstRoutedCounts would reveal that a growing share of SS7 messages are being rejected by the routing rules rather than successfully routed, a sign of misconfigured or stale rules. The cmlrInstSmsMoCounts and cmlrInstSmsMtCounts counters let an operator track mobile-originated versus mobile-terminated SMS traffic volumes passing through the MLR function, and cmlrTableLoadNotifEnabled traps would alert when a table reload event occurs.

What Can Be Monitored

  • MLR routing table load status
  • last table load time and source URL
  • routed message counts
  • aborted message counts
  • SMS mobile-originated/terminated counts
  • table load change notifications
Imported Objects

From CISCO-ITP-GSCCP-MIB

CgsccpGttGlobalTitleInd
CgsccpGttTransType

From CISCO-ITP-GSP-MIB

cgspCLLICodeOBJECT-TYPE
cgspEventSequenceNumberOBJECT-TYPE
cgspInstNetworkOBJECT-TYPE

From CISCO-ITP-TC-MIB

CItpTcGtaLongDisplay
CItpTcNAI
CItpTcNetworkName
CItpTcNumberingPlan
CItpTcPointCode
CItpTcPointCodeMask
CItpTcServiceIndicator
CItpTcSubSystemNumber
CItpTcTableLoadStatus
CItpTcURL

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DateAndTime
RowStatus
TEXTUAL-CONVENTION
TimeStamp
TruthValue
OIDs

FAQ

How would an operator use CISCO-ITP-MLR-MIB to confirm SS7 routing rules loaded correctly on a Cisco ITP node?
The MIB tracks when an MLR routing table was last loaded, from what URL, and its load status, so operators can check whether the latest Multi-Layer Routing rule table loaded successfully and when it last changed -- important on a Cisco IP Transfer Point acting as an SS7-over-IP signaling gateway, where routing decisions are driven by SCCP/TCAP/MAP-layer content like origination and destination SME addresses.

What counters in CISCO-ITP-MLR-MIB would indicate a problem with SS7 message processing rather than just table-load issues?
Beyond table load status, the MIB provides counters for routed, aborted, and continued message routing decisions, plus separate counts for mobile-originated and mobile-terminated SMS traffic. A rising count of aborted messages alongside otherwise-normal table load status would point to a message-processing or routing-rule problem rather than a load failure.

RFC description

Cisco vendor-private MIB for managing Intelligent Transport Protocol (ITP) and MLS redundancy features.

Start monitoring Cisco IP Transfer Point (ITP) SS7 signaling gateway (legacy) 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 CISCO-ITP-MLR-MIB