Stp Configuration; Stp Overview; Sstp Mode - Zte ZXR10 5900 Series User Manual

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C h a p t e r

STP Configuration

Table of Contents

STP Overview ...................................................................41

Configuring STP ................................................................49
BPDU Protection Configuration ............................................52
STP Configuration Examples................................................53
BPDU Protection Configuration Example................................56
STP Maintenance and Diagnosis...........................................58
STP Overview
Spanning Tree Protocol (STP) is applied to a loop network. It blocks
some redundant paths with certain algorithms so that the loop net-
work is pruned into a tree network without any loop, thus avoiding
the infinite loop of packets in the loop network.
STP is implemented by exchanging Bridge Protocol Data Unit
(BPDU) messages among involved switches in an extended LAN.
The following operations can be performed by exchanging BPDU
messages:
1. Selecting a root switch from the stable spanning tree topology.
2. Selecting a designated switch from the network.
3. Setting redundant switch ports to Discarding, to avoid loops in
the topology.
STP module of ZXR10 5900/5200 supports three modes: SSTP,
RSTP and MSTP, which respectively observes IEEE802.1d,
IEEE802.1w and IEEE802.1s standards.

SSTP Mode

Single Spanning Tree Protocol (SSTP) fully observes IEEE802.1d
standards in terms of function. The bridge running SSTP can fully
inter work with those running RSTP and MSTP.
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