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DES-7200 Configuration Guide Chapter 8 TPP Configuration
8-8
interface GigabitEthernet 0/5
port tpp state : enable
interface GigabitEthernet 0/6
port tpp state : enable
interface AggregatePort 1
port tpp state : enable
¾ Verification of TPP function
When spanning tree topology is stable, SwitchA is the root bridge, and the Gi
0/2 interface of Switch C is in Block state.
Step 1: To simulate the scenario that Switch C is attacked by the downlink
illegal users, we have configured BPDU Filter on port Gi0/3 of Switch B, so
that port Gi0/2 of Switch C cannot receive BPDU packets. When TPP is not
configured, port Gi0/2 of Switch C turns into Forwarding state, and the
topology changes.
DES-7200#show spanning-tree sum
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 Desg FWD 20000 128 P2p True
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
----------- ---- --- ---------- ----- -----------