H3C Technologies H3C S7500E Series Switches - Manual (Page 170)

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If GVRP and MSTP are both enabled on a device at the same time, GVRP packets will be
forwarded along the CIST. Therefore, if you wish to advertise a certain VLAN within the network
through GVRP in this case, make sure that this VLAN is mapped to the CIST (MSTI 0) when you
configure the VLAN-to-instance mapping table. For the detailed information of GVRP, refer to
GVRP Configuration in the Layer 2 - LAN Switching Configuration Guide.
MSTP is mutually exclusive with any of the following functions on a port: service loopback, RRPP,
Smart Link, and BPDU tunnel.
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.
An S7500E switch installed with an OLT card can work as an EPON OLT. In this case, you can remote
configure STP/RSTP/MSTP for ONUs in ONU port view to remove loops between attached ONUs, and
you can also remotely configure RSTP for UNIs on an ONU to remove loops between UNIs and
terminal users.
Complete the following tasks to configure MSTP:
Task Remarks
Remotely Configuring MSTP for an ONU Optional
Remotely Configure RSTP for UNIs of an ONU
Optional
Refer to ONU Remote Management
Configuration in the Layer 2 - LAN Switching
Configuration Guide
Configuring MSTP
Configuring an MST Region
Make the following configurations on the root bridge and on the leaf nodes separately.
Follow these steps to configure an MST region: