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DES-7200 Configuration Guide Chapter 8 TPP Configuration
8-3
Note
The topology protection function is suitable for the point-to-point link
network, and adjacent network devices must enable the topology
protection function. Besides, during the TPP configuration, you often
need to use cpu topology-limit to configure the threshold for CPU
utilization detection. When the CPU utilization exceeds the threshold,
the system generates the topology protection advertisement. We
suggest a middle to high value, such as 50–70, so that the TPP can
judge the network conditions more accurately. If the value is too small,
the network topology may not switch when it should to switch due to
TPP alarm. If the value is too large, the system may be too busy to
generate the TPP alarm, causing the TPP invalid.
8.3.1 Configuring Topology
Protection Globally
The global topology protection function is enabled by default. The no option of the
command disables the global topology protection.
The configuration commands are as follows:
Command Function
DES-7200> enable
Enter the privileged mode.
DES-7200# config terminal
Enter the global configuration mode.
DES-7200(config)# topology guard
Enable the global topology protection
DES-7200(config)# end
Exit to the privileged mode.
DES-7200# copy running-config
startup-config
Save the configuration.
The no topology guard command disables the global topology protection function on
the device.
8.3.2 Configuring Topology
Protection on the Port
The configuration commands are as follows:
Command Function
DES-7200> enable
Enter the privileged mode.
DES-7200# config terminal
Enter the global configuration mode.
DES-7200(config)# interface gi 0/1
Enter the interface configuration mode.
DES-7200(config-if)# tp-guard port enable
Enable the port topology protection function.