ARISTA-XCVR-DWDM-MIB

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Organization: Arista Networks, Inc.

Last Updated: 2018-08-27

Category: Vendor: Arista

Description: Arista EOS DWDM transceiver wavelength, optical power, and tuning parameter management.

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What Is ARISTA-XCVR-DWDM-MIB?

ARISTA-XCVR-DWDM-MIB is an Arista Networks EOS module for monitoring and configuring DWDM (Dense Wavelength Division Multiplexing) optical transceivers installed in Arista switches. It exposes operational and administrative channel/grid/frequency settings, tunability, modulation format, and forward-error-correction quality data such as uncorrected codewords. Its monitoring emphasis is on the hardware status of pluggable optical transceivers, whether a transceiver is tunable, its actual vs. administratively-set operating frequency/channel, and uncorrected FEC codewords as a direct signal of optical link quality degradation. It complements Arista's standard interface/transceiver inventory MIBs though it stands as its own module for DWDM-specific parameters. It is deployed on long-haul or metro DWDM optical links terminated on Arista switches in data center interconnect or service-provider transport applications. Engineers can download the ARISTA-XCVR-DWDM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ARISTA-XCVR-DWDM-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

Arista EOS switch with DWDM pluggable transceiver

Monitoring Examples

aristaXcvrDwdmTable/aristaXcvrDwdmEntry exposes aristaXcvrDwdmOperChannel, aristaXcvrDwdmOperGrid, and aristaXcvrDwdmOperFrequency alongside the corresponding administrative objects, letting an admin confirm the transceiver is actually tuned to its configured wavelength. aristaXcvrDwdmUncorrectedCodewords is a key optical-quality counter, a rising count indicates the DWDM link's forward error correction is failing to fully correct errors, signaling fiber degradation, dirty connectors, or amplifier issues before the link fully fails; aristaXcvrDwdmTunable and aristaXcvrDwdmModulationFormat confirm the transceiver's capability and current modulation scheme.

What Can Be Monitored

operational vs admin channel/grid/frequency
transceiver tunability
modulation format
uncorrected FEC codewords (optical link quality)

Imported Objects

From ARISTA-SMI-MIB

aristaMibs

OBJECT-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter64
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using aristaXcvrDwdmUncorrectedCodewords OID:

Select an Arista Networks EOS switch 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 aristaXcvrDwdmUncorrectedCodewords into the Find box to locate it in the OID tree, then select it and click OK. The Uncorrected Codewords Count associated with the transceiver. 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 Counter64-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

OID symbolic	OID numeric	Type	Access	Description
aristaXcvrDwdmMIB	1.3.6.1.4.1.30065.3.19			The MIB module for DWDM interface status and configuration on Arista devices.
aristaXcvrDwdmTable	1.3.6.1.4.1.30065.3.19.1		not-accessible	This table contains DWDM configuration and status for DWDM-capable interfaces.
aristaXcvrDwdmEntry	1.3.6.1.4.1.30065.3.19.1.1		not-accessible	DWDM configuration and status for a single DWDM-capable interface.
U32 aristaXcvrDwdmOperChannel	1.3.6.1.4.1.30065.3.19.1.1.1	Unsigned32	read-only	The channel on which the transceiver is operating. If the channel is unknown, a value of 0 is returned.
ARI aristaXcvrDwdmOperGrid	1.3.6.1.4.1.30065.3.19.1.1.2	AristaDwdmGridSpacing	read-only	The grid spacing with which the transceiver is operating, in MHz. If the grid spacing is unknown, a value of 0 is returned.
U32 aristaXcvrDwdmOperFrequency	1.3.6.1.4.1.30065.3.19.1.1.3	Unsigned32	read-only	The frequency at which the transceiver is operating, in MHz. This can be derived from channel and grid-spacing configuration if channel and grid are configured (see AristaDwdmGridSpacing description). Value is only valid if transceiver is tunable, otherwise 0.
U32 aristaXcvrDwdmAdminChannel	1.3.6.1.4.1.30065.3.19.1.1.6	Unsigned32	read-write	The channel on which the transceiver is configured. 0 is returned if frequency is configured.
ARI aristaXcvrDwdmAdminGrid	1.3.6.1.4.1.30065.3.19.1.1.7	AristaDwdmGridSpacing	read-write	The grid spacing with which the transceiver is configured, in MHz. The value may not be set to 0. 0 is returned if frequency is configured.
T/F aristaXcvrDwdmTunable	1.3.6.1.4.1.30065.3.19.1.1.8	TruthValue	read-only	Whether or not the interface contains an optic capable of tuning its output frequency, False if no optic is inserted.
ARI aristaXcvrDwdmModulationFormat	1.3.6.1.4.1.30065.3.19.1.1.9	AristaModulationFormat	read-only	The modulation format configured on the given interface. If the transceiver associated with an interface does not support modulation format configuration, then the value will be notApplicable.
U32 aristaXcvrDwdmAdminFrequency	1.3.6.1.4.1.30065.3.19.1.1.10	Unsigned32	read-write	The frequency with which the transceiver is configured, in MHz. 0 if grid and/or channel are configured
C64 aristaXcvrDwdmUncorrectedCodewordsEx	1.3.6.1.4.1.30065.3.19.1.1.11	Counter64	read-only	The Uncorrected Codewords Count associated with the transceiver. If reporting this value is not supported by the transceiver, the value will be 0.
aristaXcvrDwdmMibConformance	1.3.6.1.4.1.30065.3.19.2
aristaXcvrDwdmMibCompliances	1.3.6.1.4.1.30065.3.19.2.1
aristaXcvrDwdmMibCompliance	1.3.6.1.4.1.30065.3.19.2.1.1			The compliance statement for Arista switches that implement the ARISTA-XCVR-DWDM-MIB.
aristaXcvrDwdmMibGroups	1.3.6.1.4.1.30065.3.19.2.2
aristaXcvrDwdmGroup	1.3.6.1.4.1.30065.3.19.2.2.1			The collection of objects that provide per-interface transceiver specific information.

RFC description

Arista vendor-private MIB for managing and monitoring DWDM (Dense Wavelength Division Multiplexing) transceiver parameters.

Start monitoring Arista Networks EOS switches 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 ARISTA-XCVR-DWDM-MIB