FASTPATH-QOS-DIFFSERV-EXTENSIONS-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › FASTPATH-QOS-DIFFSERV-EXTENSIONS-MIB

Organization: Netgear

Last Updated: 2007-05-23

Category: Quality of Service, Vendor: Broadcom

Description: A Broadcom/Netgear FastPath vendor extension to the standard DiffServ MIB, adding objects for further QoS policy and classifier configuration.

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 FASTPATH-QOS-DIFFSERV-EXTENSIONS-MIB?

FASTPATH-QOS-DIFFSERV-EXTENSIONS-MIB is a Broadcom/Netgear FastPath proprietary MIB that extends the standard DiffServ MIB with additional multi-field classifier objects for switches running the FastPath switching stack. It exposes classifier configuration tables that match traffic on source/destination IP address and mask, protocol, and Layer 4 port ranges, supplementing what the standard DiffServ MIB alone can express. Monitoring-wise this is a configuration/software-policy MIB: an operator uses it to verify that QoS classification rules are correctly defined, which explains observed traffic prioritization or policing behavior rather than reporting hardware faults. It explicitly depends on and extends IETF's standard DIFFSERV-MIB, since its auxiliary classifier table supplements that standard's multi-field classifier model. It is deployed on managed switches built on Broadcom's FastPath software (branded variously by Netgear, Dell, and others) wherever fine-grained DiffServ-based QoS policies are needed. Engineers can download the FASTPATH-QOS-DIFFSERV-EXTENSIONS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in FASTPATH-QOS-DIFFSERV-EXTENSIONS-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

  • Broadcom FastPath-based managed Ethernet switch (e.g. Netgear, Dell PowerConnect)

Monitoring Examples

An admin auditing why traffic from a specific subnet isn't being classified as expected would walk agentDiffServAuxMfClfrTable/agentDiffServAuxMfClfrEntry, indexed by agentDiffServAuxMfClfrId, checking agentDiffServAuxMfClfrSrcAddr/agentDiffServAuxMfClfrSrcMask and agentDiffServAuxMfClfrDstAddr/agentDiffServAuxMfClfrDstMask against the intended match criteria. agentDiffServAuxMfClfrProtocol together with agentDiffServAuxMfClfrDstL4PortMin/Max and agentDiffServAuxMfClfrSrcL4PortMin/Max reveal whether the classifier is scoped to the correct application ports, such as a rule intended for a VoIP port range that was misconfigured with the wrong port bounds.

What Can Be Monitored

  • DiffServ classifier match criteria
  • source/destination IP and mask filters
  • protocol-based classification
  • Layer 4 port range filters
Imported Objects

From DIFFSERV-MIB

IfDirection
IndexInteger
IndexIntegerNextFree
diffServMeterEntryOBJECT-TYPE

From FASTPATH-QOS-MIB

fastPathQOSMODULE-IDENTITY

From IF-MIB

InterfaceIndex

From INET-ADDRESS-MIB

InetPortNumber

From RFC1213-MIB

DisplayString

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
RowStatus
StorageType
TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using agentDiffServColorAwareLevel OID:

Select a Broadcom FastPath-based Ethernet switch (multi-vendor OEM) (DiffServ multi-field classifier extensions) 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 agentDiffServColorAwareLevel 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 metering conformance level of this table entry. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is anything other than 'conform', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Broadcom/Netgear FastPath proprietary extensions to the standard DiffServ MIB, providing additional QoS policy and classifier configuration.

Start monitoring Broadcom FastPath-based Ethernet switch (multi-vendor OEM) (DiffServ multi-field classifier extensions) 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 FASTPATH-QOS-DIFFSERV-EXTENSIONS-MIB