All MIBs › CM-FACILITY-MIB › cmEthernetAccPortCpdV2DtpDispType
cmEthernetAccPortCpdV2DtpDispType
Module: CM-FACILITY-MIB
OID (symbolic): CM-FACILITY-MIB::cmEthernetAccPortCpdV2DtpDispType
OID (numeric): 1.3.6.1.4.1.2544.1.12.4.1.13.1.8
Node type: OBJECT-TYPE
Type: CmControlProtocolDispType
Access: read-write
Description: Control Protocol Disposition for DTP (Dynamic Trunking). MAC Address (01:00:0C:CC:CC:CC), Ethertype(0x2004).
What is cmEthernetAccPortCpdV2DtpDispType?
This read-write CmControlProtocolDispType object sets the Control Protocol Disposition specifically for DTP (Dynamic Trunking Protocol) frames, identified by MAC address 01:00:0C:CC:CC:CC and Ethertype 0x2004, on an Ethernet Access Port. Admins configure this because DTP negotiates trunk status automatically, and allowing it across a service boundary could let a customer's switch inadvertently (or maliciously) negotiate trunk mode with carrier equipment. For example, an admin securing a customer access port would set cmEthernetAccPortCpdV2DtpDispType to drop so DTP negotiation frames from the customer's switch can't influence the carrier's own VLAN trunking configuration.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2544.1.12.4.1.13.1.8 snmpwalk -v2c -c public <target> CM-FACILITY-MIB::cmEthernetAccPortCpdV2DtpDispType
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2544.1.12.4.1.13.1.8.1 snmpget -v2c -c public <target> CM-FACILITY-MIB::cmEthernetAccPortCpdV2DtpDispType.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.2544.1.12.4.1.13.1.8.1 s <value>
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OID Breakdown
Upper-level ancestors (9 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 |
| 1.3.6.1.4.1.2544 | advaMIB | ADVA-MIB |
| 1.3.6.1.4.1.2544.1 | products | ADVA-MIB |
| 1.3.6.1.4.1.2544.1.12 | fsp150cm | ADVA-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2544.1.12.4 | cmFacilityMIB | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1 | cmFacilityObjects | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1.13 | cmEthernetAccPortCpdV2Table | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1.13.1 | cmEthernetAccPortCpdV2Entry | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1.13.1.8 | cmEthernetAccPortCpdV2DtpDispType | CM-FACILITY-MIB |