HP 5820X Series

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Task Remarks
Configuring an MST region Required
Configuring the work mode of an MSTP device Optional
Configuring the timeout factor Optional
Configuring the maximum port rate Optional
Configuring ports as edge ports Optional
Configuring path costs of ports Optional
Configuring port priority Optional
Configuring the link type of ports Optional
Configuring the mode a port uses to recognize/send MSTP
packets
Optional
Enabling the output of port state transition information Optional
Configuring the leaf
nodes
Enabling the MSTP feature Required
Performing mCheck Optional
Configuring digest snooping Optional
Configuring no agreement check Optional
Configuring TC snooping Optional
Configuring protection functions Optional
If GVRP and MSTP are enabled on a device at the same time, GVRP packets are forwarded along the
CIST. To advertise a certain VLAN within the network through GVRP, make sure that this VLAN is mapped
to the CIST (MSTI 0) when you configure the VLAN-to-instance mapping table. For more information about
GVRP, see the chapter “GVRP configuration.”
MSTP is mutually exclusive with any of the following functions on a port: service loopback, RRPP, Smart
Link, and BPDU tunnel for STP.
Configurations made in system view take effect globally. Configurations made in Ethernet interface view
take effect on the current interface only. Configurations made in port group view take effect on all
member ports in the port group. Configurations made in Layer 2 aggregate interface view take effect only
on the aggregate interface. Configurations made on an aggregation member port can take effect only
after the port is removed from the aggregation group.
After you enable MSTP on a Layer 2 aggregate interface, the system performs MSTP calculation on the
Layer 2 aggregate interface but not on the aggregation member ports. The MSTP enable state and
forwarding state of each selected port in an aggregation group is consistent with those of the
corresponding Layer 2 aggregate interface.
Though the member ports of an aggregation group do not participate in MSTP calculation, the ports still
reserve its MSTP configurations for participating MSTP calculation after leaving the aggregation group.
Configuring MSTP
Configuring an MST region
Make the following configurations on the root bridge and on the leaf nodes separately.