Cambium Networks PTP 820 Series User Manual page 473

Chapter 8: Ethernet Protocols
2 In the MSTP Enable field, select True to enable MSTP on the unit. To disable MSTP, select False.
o
Enabling MSTP starts the protocol and sets all ports in all MSTP instances to Blocking state. Convergence
upon enabling the protocol generally takes less than two seconds.
o
Disabling MSTP stops the MSTP protocol from running and sets all ports in all MSTP instances to
Forwarding state.
3 In the Number of Instances (excluding CIST) field, select the number of Multiple Spanning Tree instances
(MSTIs). Possible values are 1-16. This number does not include the Common and Internal Spanning Tree
(CIST).
Note
Changing the Number of Instances causes the MSTP stack to reset.
4 In the MSTP BPDU Destination MAC field, select the destination MAC address of BPDUs generated in the
unit. Options are:
o
Customer – The destination MAC address of BPDUs is 0x0180-C200-0000. Provider BPDUs are either
tunneled or discarded.
o
Provider – The destination MAC address of BPDUs is 0x0180-C200-0008. Customer BPDUs are either
tunneled or discarded.
5 In the MSTP SD Handling field, select how MSTP handles Signal Degrade (SD) failures. Options are:
o
Ignored – Signal Degrade (SD) failures are ignored in MSTP.
o
Same as SF – SD failures trigger a topology change.
Note
SD handling is planned for future release.
6 Click Apply.
To reset the MSTP stack, click Reset Protocol.
Viewing and Configuring the MSTP Bridge Configuration ID
To configure the Configuration Name and Revision Level:
1 Select Ethernet > Protocols > MSTP > Bridge > Configuration ID. The MSTP Bridge Configuration ID page
opens.
phn-3965_006v002
Page 8-18
Configuring MSTP