Huawei quidway s7700 - MSTP Features Supported by the S7700

l Port status
Table 9-3 lists the MSTP port status, which is the same as the RSTP port status.
Table 9-3 Port status
Port
Status
Description
Forwardi
ng
A port in the Forwarding state can send and receive BPDUs as well as
forward user traffic.
Learning This is a transition state. A port in the Learning state learns MAC addresses
from user traffic to construct a MAC address table.
In the Learning state, the port can send and receive BPDUs, but cannot
forward user traffic.
Discardi
ng
A port in the Discarding state can only receive BPDUs.
There is no necessary link between the port status and the port role. Table 9-4 lists the
relationships between port roles and port status.
Table 9-4 Relationships between port roles and port status
Port
Status
Root Port/
Master
Port
Designate
d Port
Regional
Edge Port
Alternate
Port
Backup
Port
Forwardi
ng
Yes Yes Yes No No
Learning Yes Yes Yes No No
Discardi
ng
Yes Yes Yes Yes Yes
Yes: The port supports this status.
No: The port does not support this status.
9.1.2 MSTP Features Supported by the S7700
Before configuring MSTP, familiarize yourself with the concepts of basic MSTP functions,
topology convergence, MSTP protection, MSTP multi-process, and MSTP interoperability
between Huawei devices and non-Huawei devices. This will help you complete the configuration
task quickly and accurately.
MSTP is used to block redundant links on the Layer 2 network and trim a network into a loop-
free tree. In MSTP, multiple MSTIs can be created and VLANs are mapped into different
instances to load-balance VLAN traffic. The basic configuration roadmap of MSTP is as follows:
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 9 MSTP Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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