Stp Bridge-Diameter - Huawei Quidway S6500 Series Command Manual
Ethernet switches release 3000 series
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Also See for Quidway S6500 Series:
- Supplementary manual (5 pages) ,
- Operation manual (647 pages)
Table of Contents
Command Manual - STP
Quidway S6500 Series Ethernet Switches
View
System view
Parameter
None
Description
Using stp bpdu-protection command, you can enable the BPDU protection on the
switch. Using undo stp bpdu-protection command, you can restore the default state
of BPDU protection.
By default, BPDU protection is disabled.
Generally, the access ports of the access layer devices are directly connected to user
terminals (such as PC) or file servers. In this case, the access ports are set to edge
ports to implement fast state transition. However, when such access ports receive
configuration BPDU, the system will automatically set them to non-edge ports and
recalculate the spanning tree, which makes the network topology flap. These ports will
not receive any STP configuration BPDU in normal cases. Anyway, if someone
maliciously attacks the switch with fake configuration BPDU, the network will flap.
MSTP provides BPDU protection function to avoid such attack: After configured with
BPDU protection, the switch will disable the edge port through MSTP, which receives a
BPDU, and notify the network manager at same time. These ports can be resumed by
the network manager only.
Example
# Enable BPDU protection on the switch.
[Quidway] stp bpdu-protection
1.1.11 stp bridge-diameter
Syntax
stp bridge-diameter bridgenum
undo stp bridge-diameter
View
System view
Parameter
bridgenum: Ranges from 2 to 7 and defaults to 7.
Huawei Technologies Proprietary
1-10
Chapter 1 MSTP Configuration Commands
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