All MIBs › CHS-MIB › uchasSlotIndex
uchasSlotIndex
Module: CHS-MIB
OID (symbolic): CHS-MIB::uchasSlotIndex
OID (numeric): 1.3.6.1.4.1.429.1.1.1.1.1.1
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: The slot number for which this entry contains management information. NAC slots are numbered from 1 to 16. The Network Management Card (NMC) goes in slot 17. For simplicity's sake, the corresponding NIC slot numbers will be 21 through 37. Rows will not exist in this table for slots 18 through 20.
What is uchasSlotIndex?
This index identifies which physical bay of the chassis a table row describes, using a numbering scheme where NAC (network access card) bays are 1-16, the Network Management Card occupies bay 17, and NIC bays are numbered 21-37, with 18-20 deliberately unused. An admin cares about this specific numbering quirk because it means slot numbers in this MIB don't map 1:1 to physical left-to-right bay positions without knowing this scheme, and rows simply won't exist for 18-20 so a poll returning 'no such instance' there is expected, not a fault. For example, uchasSlotIndex=17 always refers to the NMC itself, while an index of 25 refers to the ninth NIC bay (21+4), which a monitoring tool must decode correctly before mapping alerts to a rack position.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.429.1.1.1.1.1.1 snmpwalk -v2c -c public <target> CHS-MIB::uchasSlotIndex
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.429.1.1.1.1.1.1.1 snmpget -v2c -c public <target> CHS-MIB::uchasSlotIndex.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> uchasSlotIndex.1
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OID Breakdown
Upper-level ancestors (6 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 |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.429 | usr | CHS-MIB |
| 1.3.6.1.4.1.429.1 | nas | CHS-MIB |
| 1.3.6.1.4.1.429.1.1 | chs | CHS-MIB |
| 1.3.6.1.4.1.429.1.1.1 | uchasSlot | CHS-MIB |
| 1.3.6.1.4.1.429.1.1.1.1 | uchasSlotTable | CHS-MIB |
| 1.3.6.1.4.1.429.1.1.1.1.1 | uchasSlotEntry | CHS-MIB |
| 1.3.6.1.4.1.429.1.1.1.1.1.1 | uchasSlotIndex | CHS-MIB |