All MIBs › FAST-ETHERNET-MIB › ctFastEthernetAdvertisedTechnologyAbility
ctFastEthernetAdvertisedTechnologyAbility
Module: FAST-ETHERNET-MIB
OID (symbolic): FAST-ETHERNET-MIB::ctFastEthernetAdvertisedTechnologyAbility
OID (numeric): 1.3.6.1.4.1.52.4.1.2.9.1.1.1.6
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: Indicates the advertised ability of the local hardware, but only becomes active on ports that have auto-negotiation enabled.
For example a port which will advertise 100Base-TX(32) and 100Base-TXFD(64) ablilities would have a value of 96(32 + 64). A port that does not support auto-negotiation will be read as other(1).
Values written to this object are limited to values read from ctFastEthernetLocalTechnologyAbility, excluding other(1) and Auto-Negotiation(2). Therefore if ctFastEthernetLocalTechnologyAbility has a value of 98 writing a value of 128 would result in an error. That is to say 100Base-T4 is not supported on this port. Furthermore, if ctFastEthernetLocalTechnologyAbility has a value that does not include Auto-Negotiation(2), writing any value will result in an error. That is to say that this port does not support Auto-Negotiation and therefore does not support ctFastEthernetAdvertisedTechnologyAbility.
A successful set operation will result in immediate link re-negotiation if ctFastEthernetCurrentOperationalMode has a value that includes Auto-Negotiation(2)(meaning Auto-negotiation is enabled).
Note: this re-negotiation will in every case cause temporary link loss during the link re-negotiation. If set to a value that is incompatible with ctFastEthernetReceivedTechnologyAbility, link negotiation will not be successful and will cause permanent link loss.
What is ctFastEthernetAdvertisedTechnologyAbility?
This read-write bitmask sets which technologies the port advertises to its link partner during auto-negotiation, using the same technology bit codes; it only has effect on ports where auto-negotiation is enabled, and reads as other(1) on ports that don't support it. Admins narrow this value to restrict which speed/duplex combinations the port will negotiate, and any successful write immediately triggers link renegotiation with a temporary link loss. For example, setting ctFastEthernetAdvertisedTechnologyAbility to 96 (32+64) makes the port advertise only 100BASE-TX and 100BASE-TX full duplex, ruling out 10BASE-T fallback.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.1.2.9.1.1.1.6 snmpwalk -v2c -c public <target> FAST-ETHERNET-MIB::ctFastEthernetAdvertisedTechnologyAbility
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.1.2.9.1.1.1.6.1 snmpget -v2c -c public <target> FAST-ETHERNET-MIB::ctFastEthernetAdvertisedTechnologyAbility.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.52.4.1.2.9.1.1.1.6.1 i <value>
Start monitoring Cabletron Systems/Enterasys managed Ethernet switch (100BASE-T Fast Ethernet negotiation) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FAST-ETHERNET-MIB::ctFastEthernetAdvertisedTechnologyAbility OID value, configure state conditions and alerts, and monitor any Cabletron Systems/Enterasys managed Ethernet switch (100BASE-T Fast Ethernet negotiation) from a single console.
OID Breakdown
Upper-level ancestors (11 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-ISDN-CONFIGURATION-MIB |
| 1.3.6.1.4.1.52.4.1.2 | ctDataLink | CTRON-ISDN-CONFIGURATION-MIB |
| 1.3.6.1.4.1.52.4.1.2.9 | ctFastEthernet | CTRON-MIB-NAMES |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.52.4.1.2.9.1 | ctFastEthernetCtl | FAST-ETHERNET-MIB |
| 1.3.6.1.4.1.52.4.1.2.9.1.1 | ctFastEthernetCtlTable | FAST-ETHERNET-MIB |
| 1.3.6.1.4.1.52.4.1.2.9.1.1.1 | ctFastEthernetCtlEntry | FAST-ETHERNET-MIB |
| 1.3.6.1.4.1.52.4.1.2.9.1.1.1.6 | ctFastEthernetAdvertisedTechnologyAbility | FAST-ETHERNET-MIB |