CISCO-RTTMON-IP-EXT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CISCO-RTTMON-IP-EXT-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2018--0-4-

Category: Cisco Devices, IP and Core Protocols, Network Monitoring (RMON)

Description: Extends IP SLA monitoring with additional IP-layer test types and extended statistics on Cisco devices.

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 CISCO-RTTMON-IP-EXT-MIB?

CISCO-RTTMON-IP-EXT-MIB extends Cisco's IP SLA (Response Time Reporter) framework defined in CISCO-RTTMON-MIB, adding IPv6 and other extended IP-layer addressing support for active network performance probes. It belongs to Cisco's network performance-monitoring MIB family and exposes configuration data for echo-style test operations, including target, source, and name-server addresses (with address-type support for IPv4/IPv6), DSCP marking, flow label, and MPLS LSP selector settings. Its monitoring value is centered on software-driven performance measurement rather than physical hardware: it lets an operator configure and later correlate active reachability/latency probes whose extended addressing and DSCP/flow-label parameters affect how traffic is treated end-to-end. It explicitly depends on and extends CISCO-RTTMON-MIB, the base IP SLA MIB. It is deployed wherever Cisco IP SLA is used to measure IPv6 or DSCP-marked path performance across a network, typically in service provider or enterprise WAN monitoring. Engineers can download the CISCO-RTTMON-IP-EXT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-RTTMON-IP-EXT-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 routers/switches running IP SLA

Monitoring Examples

An administrator configuring an IPv6 SLA probe would populate crttMonIPEchoAdminTable/crttMonIPEchoAdminEntry, setting crttMonIPEchoAdminTargetAddrType and crttMonIPEchoAdminTargetAddress to an IPv6 destination, crttMonIPEchoAdminSourceAddress for the probe origin, and crttMonIPEchoAdminDscp to mark test traffic with a specific QoS class. Correlating these extended admin settings with the base CISCO-RTTMON-MIB results table would let the operator confirm that a DSCP-marked or LSP-selected IPv6 path is meeting latency targets, or diagnose a failing probe whose crttMonIPEchoAdminNameServerAddress is misconfigured.

What Can Be Monitored

  • IPv6/IPv4 target and source addresses for SLA probes
  • DSCP marking of test traffic
  • flow label configuration
  • MPLS LSP selector address
  • name-server address used in DNS-related probes
Imported Objects

From CISCO-RTTMON-MIB

rttMonCtrlAdminEntryOBJECT-TYPE
rttMonCtrlAdminIndexOBJECT-TYPE
rttMonCtrlOperEntryOBJECT-TYPE
rttMonEchoAdminEntryOBJECT-TYPE
rttMonEchoPathAdminEntryOBJECT-TYPE
rttMonHistoryCollectionEntryOBJECT-TYPE
rttMonLpdGrpStatsEntryOBJECT-TYPE
rttMonStatsCollectEntryOBJECT-TYPE

From CISCO-RTTMON-TC-MIB

CipslaPercentileVar

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From DIFFSERV-DSCP-TC

DscpOrAny

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From IPV6-FLOW-LABEL-MIB

IPv6FlowLabelOrAny

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using cipslaPercentileLatestMin OID:

Select a Cisco routers/switches running IP SLA 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 cipslaPercentileLatestMin 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 minimum time of all retained samples. 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 value drifts significantly from its normal baseline, since an unexpected change often points to a real underlying issue. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Cisco IP SLA monitoring extensions for IPv6 and advanced RTT statistics including percentiles.

Start monitoring Cisco routers/switches running IP SLA 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-RTTMON-IP-EXT-MIB