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4.4.3
RSTP Info
This page allows you to see the information of the root switch and port status.
Root Information:
You can see root Bridge ID, Root Priority, Root Port, Root Path Cost
and the Max Age, Hello Time and Forward Delay of BPDU sent from the root switch.
Port Information:
You can see port Role, Port State, Path Cost, Port Priority, Oper P2P
mode, Oper edge port mode and Aggregated(ID/Type).
4.4.4
MSTP (Multiple Spanning Tree Protocol) Configuration
MSTP is the abbreviation of Multiple Spanning Tree Protocol. This protocol is a direct
extension of RSTP. It can provide an independent spanning tree for different VLANs. It
simplifies network management, provides for even faster convergence than RSTP by
limiting the size of each region, and prevents VLAN members from being segmented from
the rest of the group (as sometimes occurs with IEEE 802.1D STP).
While using MSTP, there are some new concepts of network architecture. A switch may
belong to different groups, act as root or designate switch, generate BPDU for the network
to maintain the forwarding table of the spanning tree. With MSTP can also provide multiple
forwarding paths and enable load balancing. Understand the architecture allows you to
maintain the correct spanning tree and operate effectively.
One VLAN can be mapped to a Multiple Spanning Tree Instance (MSTI). For example, the
maximum Instance of the Managed Switch supports is usually 16, range from 0-15. The
MSTP builds a separate Multiple Spanning Tree (MST) for each instance to maintain
connectivity among each of the assigned VLAN groups. An Internal Spanning Tree (IST) is
used to connect all the MSTP switches within an MST region. An MST Region may contain
multiple MSTP Instances.
