Operation Manual – MSTP
H3C S9500 Series Routing Switches
Chapter 1 MSTP Configuration
1-46
II. Network diagram
Figure 1-11
No Agreement Check configuration
III. Configuration procedure
# Enable No Agreement Check on Ethernet 1/1/2 of Switch A.
<Sysname> system-view
[Sysname] interface ethernet 1/1/2
[Sysname-Ethernet1/1/2] stp no-agreement-check
1.9 Configuring Protection Functions
An MSTP-compliant device supports the following protection functions:
z
BPDU guard
z
Root guard
z
Loop guard
z
TC-BPDU attack guard
Note:
Among loop guard, root guard and edge port setting, only one function can take effect
on the same port at the same time.
These protection functions function as follows:
z
BPDU guard
For access layer devices, the access ports generally have user terminals (such as PCs)
or file servers directly connected to them. These ports are usually configured as edge
ports to allow rapid transition. However, these ports become non-edge ports when they
receive configuration BPDUs, which triggers a new round of spanning tree computing
process and causes changes of network topology. Under normal conditions, these