D-Link DGS-3130 Emulator - Page 815

DGS-3130 Layer 3 Stackable Managed Switch CLI Reference Guide Command Mode Interface Configuration Mode. Command Default Level Level: 12. Usage Guideline Enabling TC filtering on a port is useful for an ISP to prevent the external bridge to a core region of the network, causing address flushing in that region, possibly because those bridges are not under the full control of the administrator. When a port is set to the TCN filter mode, the TC event received by the port will be ignored. This configuration will take effect for all the spanning-tree modes. Example This example shows how to configure TCN filtering on port Ethernet 1/0/7. Switch# configure terminal Switch(config)# interface ethernet 1/0/7 Switch(config-if)# spanning-tree tcnfilter Switch(config-if)# 78-25 spanning-tree tx-hold-count This command is used to limit the maximum number of BPDUs that can be sent before pausing for one second. Use the no form of this command to revert to the default setting. spanning-tree tx-hold-count VALUE no spanning-tree tx- hold-count Parameters VALUE Specifies the maximum number of BPDUs that can be sent before pausing for one second. The range is from 1 to 10. Default By default, this value is 6. Command Mode Global Configuration Mode. Command Default Level Level: 12. Usage Guideline This command specifies the number of hold BPDUs to transmit. The transmission of BPDUs on a port is controlled by a counter. The counter is incremented on every BPDU transmission and decremented once a second. The transmissions are paused for one second if the counter reaches the transmit hold count. 811