All MIBs › CTRON-ETHERNET-PARAMETERS-MIB › ctAutoNegReceivedTechnologyAbility
ctAutoNegReceivedTechnologyAbility
Module: CTRON-ETHERNET-PARAMETERS-MIB
OID (symbolic): CTRON-ETHERNET-PARAMETERS-MIB::ctAutoNegReceivedTechnologyAbility
OID (numeric): 1.3.6.1.4.1.52.4.1.2.4.2.1.1.1.6
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: Indicates the advertised ability of the remote hardware, or link partner.
The value is a sum. This sum initially takes the value zero. Then, for each technology, T, that the link partner supports, 2 raised to (T - 1) is added to the sum. For example, a link partner advertising 1000BASE-TFD (T = 18) and 1000BASE-T (T = 17) would return a value of 196608 ((2 ^ (18 - 1)) + (2 ^ (17 - 1))).
For ports supporting Auto-Negotiation, values should be calculated as follows:
T Technology Description -- ----------- ------------------------------------------------ 1 global Reserved for future use. 2 other None of the following. 3 unknown Initializing, true state or type not yet known 4 10BASE-T 10BASE-T Half Duplex 5 10BASE-TFD 10BASE-T Full Duplex 6 100BASE-T4 100BASE-T4 Half Duplex 7 100BASE-TX 100BASE-TX Half Duplex 8 100BASE-TXFD 100BASE-TX Full Duplex 9 FDX PAUSE Full Duplex Flow Control 10 FDX APAUSE Full Duplex Asymmetric Flow Control 11 FDX SPAUSE Full Duplex Symmetric Flow Control 12 FDX BPAUSE Full Duplex Asymmetric and Symmetric Flow Control 13 100BASE-T2 100BASE-T2 Half Duplex 14 100BASE-T2FD 100BASE-T2 Full Duplex 15 1000BASE-X 1000BASE-X Half Duplex 16 1000BASE-XFD 1000BASE-X Full Duplex 17 1000BASE-T 1000BASE-T Half Duplex 18 1000BASE-TFD 1000BASE-T Full Duplex 19 Rem Fault1 Remote Fault Bit 1 20 Rem Fault2 Remote Fault Bit 2 21 ISO Ethernet IEEE Std 802.9 ISLAN-16T
What is ctAutoNegReceivedTechnologyAbility?
This is a bitmask-encoded sum representing what technologies the device at the other end of the link is advertising during Auto-Negotiation. It lets an admin see exactly what the connected device is capable of and offering, useful for diagnosing why negotiation settled on a lower speed than expected. For example, a received value that only decodes to 100BASE-TX tells the admin the far-end device doesn't support gigabit at all, explaining a link that negotiated down to 100Mb.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.1.2.4.2.1.1.1.6 snmpwalk -v2c -c public <target> CTRON-ETHERNET-PARAMETERS-MIB::ctAutoNegReceivedTechnologyAbility
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.1.2.4.2.1.1.1.6.1 snmpget -v2c -c public <target> CTRON-ETHERNET-PARAMETERS-MIB::ctAutoNegReceivedTechnologyAbility.1
Start monitoring Cabletron Systems Ethernet switch/hub (auto-negotiation config) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTRON-ETHERNET-PARAMETERS-MIB::ctAutoNegReceivedTechnologyAbility OID value, configure state conditions and alerts, and monitor any Cabletron Systems Ethernet switch/hub (auto-negotiation config) from a single console.
OID Breakdown
Upper-level ancestors (12 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 |
| 1.3.6.1.4.1.52 | cabletron | Cabletron-MIB |
| 1.3.6.1.4.1.52.4 | mibs | CT-PRIORITY-QUEUING |
| 1.3.6.1.4.1.52.4.1 | ctron | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.1.2 | ctDataLink | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.1.2.4 | ctEthernet | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.1.2.4.2 | ctEthernetCtlParameters | CTRON-MIB-NAMES |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.52.4.1.2.4.2.1 | ctAutoNegCtl | CTRON-ETHERNET-PARAMETERS-MIB |
| 1.3.6.1.4.1.52.4.1.2.4.2.1.1 | ctAutoNegCtlTable | CTRON-ETHERNET-PARAMETERS-MIB |
| 1.3.6.1.4.1.52.4.1.2.4.2.1.1.1 | ctAutoNegCtlEntry | CTRON-ETHERNET-PARAMETERS-MIB |
| 1.3.6.1.4.1.52.4.1.2.4.2.1.1.1.6 | ctAutoNegReceivedTechnologyAbility | CTRON-ETHERNET-PARAMETERS-MIB |