R3102-R3103-HP 6600/HSR6600 Routers Layer 2 - LAN Switching Command Reference

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Views
Ethernet interface view, port group view, Layer 2 aggregate interface view
Default command level
2: System level
Usage guidelines
Configured in Ethernet interface view, the setting takes effect only on the interface.
Configured in port group view, the setting takes effect on all member ports in the port group.
Configured in Layer 2 aggregate interface view, the setting takes effect only on the aggregate interface.
Configured on a member port in an aggregation group, the setting takes effect only after the port leaves
the aggregation group.
You cannot configure root guard and loop guard on a port at the same time.
Examples
# Enable the root guard function for GigabitEthernet 4/0/1.
<Sysname> system-view
[Sysname] interface GigabitEthernet 4/0/1
[Sysname-GigabitEthernet4/0/1] stp root-protection
Related commands
stp loop-protection
stp tc-protection
Use stp tc-protection enable to enable the TC-BPDU attack guard function for the device.
Use stp tc-protection disable to disable the TC-BPDU attack guard function for the device.
Syntax
stp tc-protection enable
stp tc-protection disable
Default
The TC-BPDU attack guard function is enabled.
Views
System view
Default command level
2: System level
Usage guidelines
With the TC-BPDU guard function, you can set the maximum number of immediate forwarding address
entry flushes that the device can perform every a certain period of time (10 seconds). For TC-BPDUs
received in excess of the limit, the device performs a forwarding address entry flush when the time period
expires. This prevents frequent flushing of forwarding address entries.
Examples
# Disable the TC-BPDU attack guard function for the device.