Setting Port Parameters - Huawei Quidway S7700 Configuration Manual - Ethernet

Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet
l Run the stp timer hello hello-time command to set the Hello time for a switching device.
l Run the stp timer max-age max-age command to set the Max Age period for a switching
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8.3.3 Setting Port Parameters

Port parameters that may affect RSTP topology convergence include the link type and maximum
number of sent BPDUs. Proper port parameters help RSTP to implement rapid topology
convergence.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The Ethernet interface view is displayed.
Step 3 (Optional) Run:
stp point-to-point { auto | force-false | force-true }
The link type is configured for a port.
By default, a port automatically determines whether to connect to a P2P link. The P2P link
supports rapid network convergence.
l If the Ethernet port works in full-duplex mode, the port is connected to a P2P link. In this
l If the Ethernet port works in half-duplex mode, you can configure stp point-to-point force-
Step 4 Run:
stp mcheck
MCheck is enabled.
On a switching device running RSTP, if a port is connected to a device running STP, the port
automatically transitions to the STP interoperable mode.
Enabling MCheck on the port is required because the port may fail to automatically transition
to the RSTP mode in the following situations:
Issue 01 (2011-07-15)
The default Forward Delay period of a switching device is 1500, in centiseconds.
The default Hello time of a switching device is 200, in centiseconds.
device.
The default Max Age period of a switching device is 2000, in centiseconds.
NOTE
The values of the Hello time, Forward Delay period, and Max Age period must comply with the following
formulas. Otherwise, networking flapping occurs.
l 2 × (Forward Delay - 1.0 second) >= Max Age
l Max Age >= 2 × (Hello Time + 1.0 second)
case, force-true can be configured to implement rapid network convergence.
true to forcibly set the link type to P2P to implement rapid network convergence.
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8 STP/RSTP Configuration
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