CADANT-L2VPN-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCADANT-L2VPN-MIB

Organization: Arris International, Inc.

Last Updated: 2015-10-01

Category: DOCSIS and Cable, Vendor: ARRIS

Description: Manages Layer 2 VPN service configuration and status on ARRIS/Cadant CMTS for business service delivery.

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What Is CADANT-L2VPN-MIB?

CADANT-L2VPN-MIB is an ARRIS/Cadant proprietary MIB for configuring and monitoring Layer 2 VPN (L2VPN) service delivery on Cadant CMTS platforms, typically used to offer business Ethernet/L2VPN services over a DOCSIS cable access network. It exposes network-interface designation for primary/secondary/active L2VPN uplinks, global service settings (like the 802.1Q TPID used for tagging), cable-modem L2VPN capability flags, and a per-interface table controlling IGMP snooping and row-status for L2VPN interfaces. For monitoring hardware/software status, cadL2vpnActiveNetworkIfIndex reveals which physical network interface is currently carrying L2VPN traffic (confirming failover from primary to secondary uplink actually occurred), and cadL2vpnForwardingEnabled/cadL2vpnInterfaceRowStatus reveal whether the service and specific interfaces are administratively active. This MIB is CMTS/DOCSIS-specific and complements the standard DOCSIS cable-modem and interface MIBs on the same platform for a complete service picture. Typical deployment context is a cable operator's Cadant CMTS chassis delivering business-class L2VPN transport service to enterprise customers over a shared DOCSIS network. Engineers can download the CADANT-L2VPN-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CADANT-L2VPN-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

  • ARRIS/Cadant CMTS (Cable Modem Termination System)

Monitoring Examples

An operator would check cadL2vpnActiveNetworkIfIndex against cadL2vpnPrimaryNetworkIfIndex/cadL2vpnSecondaryNetworkIfIndex to confirm whether the L2VPN service has failed over to its secondary uplink, which combined with cadL2vpnForwardingEnabled being false would indicate a service outage. cadL2vpnInterfaceTable/cadL2vpnInterfaceEntry, keyed by cadL2vpnInterfaceIfIndex, would be polled for cadL2vpnInterfaceRowStatus to confirm a customer's L2VPN interface is provisioned and active, and cadL2vpnInterfaceIpIgmpSnooping to verify multicast handling for that circuit. cadL2vpnCmCapEsafeIdentRequired and cadL2vpnCmCapDutFilterRequired reflect cable-modem-side capability requirements relevant to service eligibility.

What Can Be Monitored

  • active/primary/secondary L2VPN network interface
  • L2VPN forwarding enabled state
  • per-interface row status (provisioned/active)
  • IGMP snooping configuration per L2VPN interface
  • cable-modem L2VPN capability flags
Imported Objects

From CADANT-PRODUCTS-MIB

cadL2vpnOBJECT-IDENTITY

From CLAB-DEF-MIB

DocsL2vpnIfList
clabProjDocsisOBJECT-IDENTITY

From DOCS-IF-MIB

docsIfCmtsCmStatusIndexOBJECT-TYPE

From DOCS-L2VPN-MIB

DocsL2vpnIdentifier
DocsL2vpnIndex
DocsNsiEncapSubtype
docsL2vpnIdxOBJECT-TYPE

From DOCS-QOS3-MIB

docsQosPktClassIdOBJECT-TYPE
docsQosServiceFlowIdOBJECT-TYPE

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndexOBJECT-TYPE

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using cerL2vpnCmStatsUpstreamPkts OID:

Select an ARRIS/Cadant C4/E6000 CMT (cable modem termination system) 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 cerL2vpnCmStatsUpstreamPkts 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 number of L2vpn-forwarded packets received from this instance's Cable Modem on this instance's L2VPN. 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 Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

L2VPN management for Cadant CMTS devices with service flow configuration and VLAN encapsulation.

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Download CADANT-L2VPN-MIB