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DES-7200 Configuration Guide Chapter 8 TPP Configuration
8-9
Gi0/2 Desg FWD 20000 128 P2p True
Gi0/1 Root FWD 20000 128 P2p False
Step 2: After completing TPP related configurations as per the steps shown
herein, we simulates the scenario that Switch C is attacked by downlink illegal
users who send excessive ARP packets to Switch C, causing CPU utilization
to exceed the configured threshold. By this time, further configure BPDU Filter
on port Gi0/3 of Switch B, so that the Gi0/2 of Switch C cannot receive BPDU
packets. By displaying the state of spanning tree interface on Switch C, it can
be found that the interface maintains the Block state. TPP has taken effect.
DES-7200#show spanning-tree summary
Spanning tree enabled protocol mstp
MST 0 vlans map : 1-9, 11-19, 21-29, 31-39, 41-4094
Root ID Priority 4096
Address 00d0.f834.56f0
this bridge is root
Hello Time 2 sec Forward Delay 15 sec Max Age 20 sec
Bridge ID Priority 32768
Address 00d0.f822.33aa
Hello Time 2 sec Forward Delay 15 sec Max Age 20 sec
Interface Role Sts Cost Prio Type OperEdge
----------- ---- --- ---------- ----- -----------
Gi0/2 Altn BLK 20000 128 P2p False
Gi0/1 Root FWD 20000 128 P2p False
MST 1 vlans map : 10, 20
Region Root Priority 4096
Address 00d0.f834.56f0
this bridge is region root
Bridge ID Priority 32768
Address 00d0.f822.33aa
Interface Role Sts Cost Prio Type OperEdge
----------- ---- --- ---------- ----- -----------
Gi0/2 Altn BLK 20000 128 P2p False
Gi0/1 Root FWD 20000 128 P2p False