JUNIPER-CHASSIS-FWDD-MIB

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Organization: Juniper Networks, Inc.

Last Updated: 2006-02-16

Category: Hardware and Environment, Vendor: Juniper

Description: Defines managed objects for Forwarding Daemon (fwdd) chassis components on Juniper Networks devices, monitoring forwarding plane health.

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What Is JUNIPER-CHASSIS-FWDD-MIB?

JUNIPER-CHASSIS-FWDD-MIB is Juniper Networks' enterprise MIB for the Forwarding Daemon (fwdd) process on J-Series router chassis, exposing management information about the software process responsible for the forwarding plane. It belongs to the software/process-status category of MIBs, focused on the health of the forwarding daemon process itself rather than interface traffic counters. Its monitoring value is centered on software process status: confirming the fwdd process is running correctly is critical since a failed or hung forwarding daemon directly affects packet forwarding on the router. Only a single top-level object (jnxFwddProcess) was captured in the sample, suggesting the module may define a small, focused set of process-status objects rather than a large table, and it fits within Juniper's broader jnx enterprise MIB tree conventions (e.g. depending on JUNIPER-SMI). It is typically deployed on Juniper J-Series routers where administrators want visibility into the forwarding-plane software process's operational state. Engineers can download the JUNIPER-CHASSIS-FWDD-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in JUNIPER-CHASSIS-FWDD-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

Juniper Networks J-Series router

Monitoring Examples

An administrator would poll jnxFwddProcess to confirm the forwarding daemon process is present and running normally on a J-Series router chassis; a missing or abnormal value here would indicate the forwarding plane software has crashed or restarted, which would explain a sudden loss of packet forwarding despite the control plane remaining reachable.

What Can Be Monitored

forwarding daemon (fwdd) process status

Imported Objects

From JUNIPER-SMI

jnxMibs

OBJECT-IDENTITY

From SNMPv2-SMI

Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using jnxFwddMicroKernelCPUUsage OID:

Select a Juniper Networks J-Series router (forwarding daemon process 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 jnxFwddMicroKernelCPUUsage into the Find box to locate it in the OID tree, then select it and click OK. The FWDD Micro Kernel CPU utilization in percentage. 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 utilization exceeds 85%, a common warning threshold before sustained high load affects performance. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
jnxFwdd	1.3.6.1.4.1.2636.3.34			This is Juniper Networks' implementation of enterprise specific MIB for J-Series FWDD module from the router chassis box.
jnxFwddProcess	1.3.6.1.4.1.2636.3.34.1
G32 jnxFwddMicroKernelCPUUsageEx	1.3.6.1.4.1.2636.3.34.1.1	Gauge32	read-only	The FWDD Micro Kernel CPU utilization in percentage. Zero if unavailable or inapplicable.
G32 jnxFwddRtThreadsCPUUsage	1.3.6.1.4.1.2636.3.34.1.2	Gauge32	read-only	The FWDD Realtime threads total CPU utilization in percentage. Zero if unavailable or inapplicable.
G32 jnxFwddHeapUsage	1.3.6.1.4.1.2636.3.34.1.3	Gauge32	read-only	The FWDD Heap utilization in percentage. Zero if unavailable or inapplicable.
G32 jnxFwddDmaMemUsage	1.3.6.1.4.1.2636.3.34.1.4	Gauge32	read-only	The FWDD DMA Memory utilization in percentage. Zero if unavailable or inapplicable.
I32 jnxFwddUpTime	1.3.6.1.4.1.2636.3.34.1.5	Integer32	read-only	The FWDD Module uptime expressed in seconds. Zero if unavailable or inapplicable.

RFC description

Juniper vendor MIB for chassis forwarding domain (FWDD) management on Juniper routers and switches.

Start monitoring Juniper Networks J-Series router (forwarding daemon process 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.

Download JUNIPER-CHASSIS-FWDD-MIB