3Com 7757 Configuration Manual page 267

Table 200 Enable the root guard function in Ethernet port view
Operation
Enter system view
Enter Ethernet port
view
Enable the root guard
function on current
port
Configuration example
# Enable the root guard function on Ethernet1/0/1 port.
1 Configure in system view.
<SW7750> system-view
[SW7750] stp interface ethernet1/0/1 root-protection
2 Configure in Ethernet port view.
<SW7750> system-view
[SW7750] interface ethernet1/0/1
[SW7750-Ethernet1/0/1] stp root-protection
Loop Guard Configuration prerequisites
Configuration
MSTP is enabled on the current switch.
Configuration procedure
Table 201 Enable the Loop guard function in system view
Operation
Enter system view
Enable the loop guard
function on specified
ports
Table 202 Enable the Loop guard function in Ethernet port view
Operation
Enter system view
Enter Ethernet port
view
Enable the loop
prevention function on
the current port
Configuration example
# Enable loop prevention function on Ethernet1/0/1 port.
1 Configure in system view.
<SW7750> system-view
System View: return to User View with Ctrl+Z.
[SW7750] stp interface ethernet1/0/1 loop-protection
2 Configure in Ethernet port view.
Command
system-view
Interface interface-type
interface-number
stp root-protection
Command
system-view
stp interface interface-list
loop-protection
Command
system-view
interface interface-type
interface-number
stp loop-protection
Protection Function Configuration
Description
-
-
Required
The root guard function is
disabled by default.
Description
-
Required
The loop prevention function is
disabled by default.
Description
-
-
Required
The loop prevention function is
disabled by default.
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