Port > Configure > Layer2 Protocol Tunneling
From this dialog box, you can specify Layer2 protocol tunneling settings for the ports on this device. Tunneling allows separate local networks, connected through an ISP, to be recognized as one VLAN. This is possible because packets are transported by the ISP from one network to another, giving the impression that the two networks are really one network. Tunneling is supported by the following Layer2 protocols: Cisco Discovery Protocol (CDP), VLAN Trunk Protocol (VTP), and Spanning Tree Protocol (STP).
Note: This dialog box only appears on interfaces that support tunneling.
This dialog box displays the following data:
CDP Shutdown Threshold (PDUs/sec) (cltcTunnelShutdownThreshold)
VTP Shutdown Threshold (PDUs/sec) (cltcTunnelShutdownThreshold)
STP Shutdown Threshold (PDUs/sec) (cltcTunnelShutdownThreshold)
The following list specifies buttons in this dialog box, as well as their function:
Click OK to continue.
Click Apply to save the changes in the dialog box.
Click Cancel to close the dialog box.
Click Refresh to update the contents of the dialog box.
Click Print to print the contents of the dialog box.
Click Help to access online help.
CDP Tunneling (cltcTunneledProtocolType)
Indicates whether CDP PDU tunneling mode is enabled.
CDP Drop Threshold (PDUs/sec) (cltcTunnelDropThreshold)
Indicates the drop threshold for tunneled CDP PDUs on an interface. After reaching this value, the interface drops CPD PDUs. A value of "0" indicates that no limit is set. This field is disabled when CDP tunneling mode is disabled.
Note: This field is only displayed on devices that support thresholds on a per interface and per protocol basis.
CDP Shutdown Threshold (PDUs/sec) (cltcTunnelShutdownThreshold)
Indicates the shutdown threshold for tunneled CDP PDUs on an interface. After reaching this value, the interface shuts down. A value of "0" indicates that no limit is set. This field is disabled when CDP tunneling mode is disabled.
Note: This field is only displayed on devices that support thresholds on a per interface and per protocol basis.
VTP Tunneling (cltcTunneledProtocolType)
Indicates whether VTP PDU tunneling mode is enabled.
VTP Drop Threshold (PDUs/sec) (cltcTunnelDropThreshold)
Indicates the drop threshold for tunneled VTP PDUs on an interface. After reaching this value, the interface drops VTP PDUs. A value of "0" indicates that no limit is set. This field is disabled when VTP tunneling mode is disabled.
Note: This field is only displayed on devices that support thresholds on a per interface and per protocol basis.
VTP Shutdown Threshold (PDUs/sec) (cltcTunnelShutdownThreshold)
Indicates the shutdown threshold for tunneled VTP PDUs on an interface. After reaching this value, the interface shuts down. A value of "0" indicates that no limit is set. This field is disabled when VTP tunneling mode is disabled.
Note: This field is only displayed on devices that support thresholds on a per interface and per protocol basis.
STP Tunneling (cltcTunneledProtocolType)
Indicates whether STP PDU tunneling mode is enabled.
STP Drop Threshold (PDUs/sec) (cltcTunnelDropThreshold)
Indicates the drop threshold for tunneled STP PDUs on an interface. After reaching this value, the interface drops STP PDUs. A value of "0" indicates that no limit is set. This field is disabled when STP tunneling mode is disabled.
Note: This field is only displayed on devices that support thresholds on a per interface and per protocol basis.
STP Shutdown Threshold (PDUs/sec) (cltcTunnelShutdownThreshold)
Indicates the shutdown threshold for tunneled STP PDUs on an interface. After reaching this value, the interface shuts down. A value of "0" indicates that no limit is set. This field is disabled when STP tunneling mode is disabled.
Note: This field is only displayed on devices that support thresholds on a per interface and per protocol basis.
Drop Threshold (PDUs/sec) (cltcTunnelDropThreshold)
Indicates the drop threshold on an interface. After reaching this value, the interface drops PDUs. A value of "0" indicates that no limit is set. This threshold is applicable for all the three protocols.
Note: This field is only displayed on devices that do not support thresholds on a per interface and per protocol basis.
Shutdown Threshold (PDUs/sec) (cltcTunnelShutdownThreshold)
Indicates the shutdown threshold on an interface. After reaching this value, the interface shuts down. A value of "0" indicates that no limit is set. This threshold is applicable for all the three protocols.
Note: This field is only displayed on devices that do not support thresholds on a per interface and per protocol basis.