RADLAN-VOIP-SNOOP

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › RADLAN-VOIP-SNOOP

Last Updated: 2006-04-02

Category: Security, Vendor: RADLAN/Cisco SB

Description: Monitors VoIP traffic streams for QoS and protocol conformance on Marvell switches.

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What Is RADLAN-VOIP-SNOOP?

RADLAN-VOIP-SNOOP is a Marvell/RadLan proprietary SNMP module for switches built on RadLan-derived switch software, providing VoIP traffic snooping to detect and prioritize voice media streams for QoS purposes. It exposes an enable/disable scalar for snooping, a QoS mapping table (rlVoipMngSnoopQosTable) that ties a QoS type to a value, an interface-scope table controlling which ports snooping applies to, and a session table tracking detected VoIP sessions including destination IP address type. Its monitoring emphasis is protocol/traffic conformance and QoS application rather than chassis hardware: rlVoipMngSnoopSessionTable lets an admin see which VoIP sessions the switch has detected and is applying QoS to, while the QoS table confirms which DSCP/CoS value is being assigned to detected voice traffic. It typically works alongside the switch's general QoS and interface MIBs (e.g., IF-MIB, and vendor QoS MIBs) since VoIP snooping is one input into the switch's overall QoS marking/queueing behavior. It is typically deployed on enterprise access switches carrying converged voice/data traffic where automatic VoIP QoS classification is desired. Engineers can download the RADLAN-VOIP-SNOOP file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RADLAN-VOIP-SNOOP. 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

  • Marvell/RadLan-based Ethernet switch

Monitoring Examples

An admin verifying voice QoS would first confirm rlVoipMngSnoopEnableScalar is enabled, then check rlVoipMngSnoopIfIndexTable/rlVoipMngSnoopIfIndexEntry via rlVoipMngSnoopIfIndex and rlVoipMngSnoopIfIndexStatus to ensure snooping is active on the phone-facing ports. Querying rlVoipMngSnoopSessionTable/rlVoipMngSnoopSessionEntry (using rlVoipMngSnoopSessionDstIpAddrType) reveals active detected VoIP sessions, and if expected calls do not appear there, the admin would check rlVoipMngSnoopQosTable/rlVoipMngSnoopQosEntry (rlVoipMngSnoopQosType/rlVoipMngSnoopQosValue) to confirm the QoS marking configuration is correct. This combination lets an admin confirm both that voice traffic is being detected and that it is receiving the intended QoS treatment.

What Can Be Monitored

  • VoIP snooping enable state
  • per-interface snooping status
  • detected VoIP session list
  • QoS type-to-value mapping
  • session destination IP address type
Imported Objects

From IF-MIB

InterfaceIndex
ifIndexOBJECT-TYPE

From INET-ADDRESS-MIB

InetAddress
InetAddressPrefixLength
InetAddressType
InetVersion
InetZoneIndex

From Q-BRIDGE-MIB

VlanId

From RADLAN-MIB

rndOBJECT-IDENTITY

From SNMPv2-SMI

Counter32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
RowStatus
TEXTUAL-CONVENTION
TruthValue
OIDs

RFC description

Vendor-specific MIB for Radlan VoIP monitoring and snooping functionality; captures and monitors VoIP call signaling and media streams.

Start monitoring Marvell/RadLan-based Ethernet switch (VoIP traffic snooping/QoS) 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 RADLAN-VOIP-SNOOP