VDSL2-LINE-MIB :: xdsl2LConfProfTxRefVnUs

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

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xdsl2LConfProfTxRefVnUs

Module: VDSL2-LINE-MIB

OID (symbolic): VDSL2-LINE-MIB::xdsl2LConfProfTxRefVnUs

OID (numeric): 1.3.6.1.2.1.10.251.1.5.1.2.1.28

Node type: OBJECT-TYPE

Type: Xdsl2LineTxRefVnUs

Access: read-create

Description: This configuration parameter defines the upstream transmitter-referred virtual noise. The TXREFVNus shall be specified through a set of breakpoints. Each breakpoint shall consist of a subcarrier index t, with a subcarrier spacing of 4.3125 kHz, and a noise PSD level (expressed in dBm/Hz) at that subcarrier. The set of breakpoints

can then be represented as: [(t1, PSD1), (t2, PSD2), ... , (tN, PSDN)].

What is xdsl2LConfProfTxRefVnUs?

Defines the upstream transmitter-referred virtual noise curve as a set of (subcarrier-index, noise-PSD) breakpoints, used when xdsl2LConfProfSnrModeUs enables virtual noise, mirroring xdsl2LConfProfTxRefVnDs for the upstream direction. An operator tunes this curve to model expected upstream noise so the line's upstream training stays robust against it.

OID Breakdown

Upper-level ancestors (7 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAPERTUS-NPG-MIB
1.3.6.1.2.1mib_2AXON-MIB
1.3.6.1.2.1.10transmissionCHECKPOINT-MIB-2
Numeric OIDNameModule
1.3.6.1.2.1.10.251vdsl2MIBVDSL2-LINE-MIB
1.3.6.1.2.1.10.251.1xdsl2ObjectsVDSL2-LINE-MIB
1.3.6.1.2.1.10.251.1.5xdsl2ProfileVDSL2-LINE-MIB
1.3.6.1.2.1.10.251.1.5.1xdsl2ProfileLineVDSL2-LINE-MIB
1.3.6.1.2.1.10.251.1.5.1.2xdsl2LineConfProfTableVDSL2-LINE-MIB
1.3.6.1.2.1.10.251.1.5.1.2.1xdsl2LineConfProfEntryVDSL2-LINE-MIB
1.3.6.1.2.1.10.251.1.5.1.2.1.28xdsl2LConfProfTxRefVnUsVDSL2-LINE-MIB