All MIBs › VDSL2-LINE-MIB › xdsl2LineSegmentBitsAlloc
xdsl2LineSegmentBitsAlloc
Module: VDSL2-LINE-MIB
OID (symbolic): VDSL2-LINE-MIB::xdsl2LineSegmentBitsAlloc
OID (numeric): 1.3.6.1.2.1.10.251.1.2.1.1.3
Node type: OBJECT-TYPE
Type: Xdsl2BitsAlloc
Access: read-only
Description: The bits allocation per subcarrier. An array of 256 octets (512 nibbles), designed for supporting up to 512 (downstream) subcarriers. When more than 512 subcarriers are supported, the status information is reported through multiple (up to 8) segments. The first segment is then used for the first 512 subcarriers. The second segment is used for the subcarriers 512 to 1023 and so on. The aggregate number of utilized nibbles in the downstream direction (in all segments) depends on NSds; in the upstream direction, it depends on NSus. This value is referred to here as NS. The segment number is in xdsl2SCStatusSegment. Nibble i (0 <= i < MIN((NS+1)-(segment-1)*512,512)) in each segment is set to a value in the range 0 to 15 to indicate that the respective downstream or upstream subcarrier j (j=(segement-1)*512+i) has the same amount of bits allocation.
What is xdsl2LineSegmentBitsAlloc?
Holds the bit-loading table for a segment of subcarriers on this line -- a packed array of nibbles, one per subcarrier, each 0-15 indicating how many bits that subcarrier currently carries -- reported in up to 8 segments of 512 subcarriers each for lines with more than 512 tones. Test tools and vendor diagnostics chart this per-subcarrier bit allocation to visualize where noise or bridged taps are forcing the line to drop bits on specific frequencies.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.10.251.1.2.1.1.3 snmpwalk -v2c -c public <target> VDSL2-LINE-MIB::xdsl2LineSegmentBitsAlloc
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.10.251.1.2.1.1.3.1 snmpget -v2c -c public <target> VDSL2-LINE-MIB::xdsl2LineSegmentBitsAlloc.1
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OID Breakdown
Upper-level ancestors (7 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.2 | mgmt | APERTUS-NPG-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| 1.3.6.1.2.1.10 | transmission | CHECKPOINT-MIB-2 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.10.251 | vdsl2MIB | VDSL2-LINE-MIB |
| 1.3.6.1.2.1.10.251.1 | xdsl2Objects | VDSL2-LINE-MIB |
| 1.3.6.1.2.1.10.251.1.2 | xdsl2Status | VDSL2-LINE-MIB |
| 1.3.6.1.2.1.10.251.1.2.1 | xdsl2LineSegmentTable | VDSL2-LINE-MIB |
| 1.3.6.1.2.1.10.251.1.2.1.1 | xdsl2LineSegmentEntry | VDSL2-LINE-MIB |
| 1.3.6.1.2.1.10.251.1.2.1.1.3 | xdsl2LineSegmentBitsAlloc | VDSL2-LINE-MIB |