Stp No-Agreement-Check - H3C S3100-52P Command Manual

Command Manual – MSTP
H3C S3100-52P Ethernet Switches
To make a switch compatible with STP/RSTP, MSTP provides following three operating
modes:
STP-compatible mode, where a switch sends out STP BPDUs
RSTP-compatible mode, where a switch sends out RSTP BPDUs
MSTP mode, where a switch sends out MSTP BPDUs
Related command: stp mcheck, stp, stp interface, and stp interface mcheck.
Example
# Configure the MSTP-enabled switch to operate in STP-compatible mode.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] stp mode stp

1.1.32 stp no-agreement-check

Syntax
stp no-agreement-check
undo stp no-agreement-check
View
Ethernet port view
Parameter
None
Description
Use the stp no-agreement-check command to enable the rapid transition feature on a
port.
Use the stp no-agreement-check command to disable the rapid transition feature.
By default, the rapid transition feature is disabled on a port.
Some manufactures' switches adopt proprietary spanning tree protocols that are
similar to RSTP in the way to implement rapid transition on designated ports. When a
switch of this kind operates as the upstream switch of a H3C series switch running
MSTP, the upstream designated port fails to change their states rapidly.
The rapid transition feature aims to resolve this problem. When a H3C series switch
running MSTP is connected in the upstream direction to another manufacture's switch
adopting proprietary spanning tree protocols, you can enable the rapid transition
feature on the ports of the H3C series switch operating as the downstream switch.
Among these ports, those operating as the root ports will then actively send agreement
packets to their upstream ports after they receive proposal packets from the upstream
Chapter 1 MSTP Configuration Commands
1-34