SNR S2989G-8TX [411/553] Mstp troubleshooting
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SNR S2989G-8TX [411/553] Mstp troubleshooting

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SNR S2989G-24TX-POE [411/553] Mstp troubleshooting
S2989G-24TX Operation Manual
Chapter 7 Reliability Configuration
7-12
Figure 7-4 The Topology Of the Instance 3 after the MSTP Calculation
Figure 7-5 The Topology Of the Instance 4 after the MSTP Calculation
MSTP Troubleshooting
In order to run the MSTP on the switch port, the MSTP has to be enabled globally. If
the MSTP is not enabled globally, it can’t be enabled on the port.
The MSTP parameters co work with each other, so the parameters should meet the
following conditions. Otherwise, the MSTP may work incorrectly.
2×(Bridge_Forward_Delay -1.0 seconds) >= Bridge_Max_Age
Bridge_Max_Age >= 2 ×(Bridge_Hello_Time + 1.0 seconds)
When users modify the MSTP parameters, they have to be sure about the changes of
the topologies. The global configuration is based on the bridge. Other configurations
are based on the individual instances.
2
2X
SW2
5X
4
3
3X
6
4
6
5 7
SW4
2
2
SW2
5
4
3X
3
6
7
SW3
4X
6
5X 7X
SW4

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