All MIBs › GIGAswitchEthernet-MIB › gsEVirtualSwitchPortFormat
gsEVirtualSwitchPortFormat
Module: GIGAswitchEthernet-MIB
OID (symbolic): GIGAswitchEthernet-MIB::gsEVirtualSwitchPortFormat
OID (numeric): 1.3.6.1.4.1.36.2.18.39.7.4.1.1.2
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: Typically, a VLAN capable switch port has one of three modes: access, trunk, or hybrid. In access mode, the port sends frames in clear format (untagged). In trunk mode, all outbound frames are translated into the switch port's configured trunking format.
In hybrid mode, it is possible for a port to send trunked frames for some VLANs and clear frames for others. In this case, the switch port is configured to trunk, and the virtual switch port(s) for those VLANs that require clear formatted frames are configured to be override the switch port setting. This is done by setting this object to clear(1).
By default, the value of this object is trunkingFormat(2) which means to use the trunking format configured for this switch port. (which may be clear).
What is gsEVirtualSwitchPortFormat?
Overrides, for this VLAN on this specific port, whether frames leave clear (untagged, access-mode) or in the switch port's configured trunking format; the default, trunkingFormat(2), just follows whatever the underlying switch port is set to. Admins set clear(1) here in a 'hybrid' setup where most VLANs on a trunk port are tagged but one particular VLAN needs to leave untagged.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.36.2.18.39.7.4.1.1.2 snmpwalk -v2c -c public <target> GIGAswitchEthernet-MIB::gsEVirtualSwitchPortFormat
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.36.2.18.39.7.4.1.1.2.1 snmpget -v2c -c public <target> GIGAswitchEthernet-MIB::gsEVirtualSwitchPortFormat.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.36.2.18.39.7.4.1.1.2.1 i <value>
Start monitoring Digital Equipment Corporation (DEC) GIGAswitch/Ethernet chassis switch (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the GIGAswitchEthernet-MIB::gsEVirtualSwitchPortFormat OID value, configure state conditions and alerts, and monitor any Digital Equipment Corporation (DEC) GIGAswitch/Ethernet chassis switch (legacy) from a single console.
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 |
| 1.3.6.1.4.1.36 | dec | CMU-MIB |
| 1.3.6.1.4.1.36.2 | ema | DEC-ATM-CHASSIS-MIB |
| 1.3.6.1.4.1.36.2.18 | decMIBextension | DEC-ATM-CHASSIS-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.36.2.18.39 | gsEMIB | GIGAswitchEthernet-MIB |
| 1.3.6.1.4.1.36.2.18.39.7 | gsEVlanMgt | GIGAswitchEthernet-MIB |
| 1.3.6.1.4.1.36.2.18.39.7.4 | gsEVirtualPorts | GIGAswitchEthernet-MIB |
| 1.3.6.1.4.1.36.2.18.39.7.4.1 | gsEVirtualSwitchPortTable | GIGAswitchEthernet-MIB |
| 1.3.6.1.4.1.36.2.18.39.7.4.1.1 | gsEVirtualSwitchPortEntry | GIGAswitchEthernet-MIB |
| 1.3.6.1.4.1.36.2.18.39.7.4.1.1.2 | gsEVirtualSwitchPortFormat | GIGAswitchEthernet-MIB |