3Com S7906E Configuration Manual page 125

When STP is enabled globally on an OLT switch, you must enable STP on all ONUs.
STP runs normally only when all attached ONUs are 3Com ONUs.
STP configurations in the system view of the OLT switch take effect on all attached ONUs.
An ONU port supports only MSTI 0 among all MSTIs. Therefore, the MST region configuration on
the OLT switch does not take effect on the attached ONUs.
Follow these steps to configure MSTP for an ONU port:
To do...
Enter system view
Enter ONU port view
Configure the maximum
transmission rate of the
port
Configure the port as an
edge port
Configure the path cost of
the port
Configure the link type of
the port
Enable the MSTP feature
for the port
Perform mCheck
Enable digest snooping
on the port
Enable No Agreement
Check on the port
Enable root guard on the
port
Enable loop guard on the
port
Use the command...
system-view
interface interface-type
interface-number
stp transmit-limit
packet-number
stp edged-port enable
stp cost cost
stp point-to-point { auto |
force-false | force-true }
stp enable
stp mcheck
stp config-digest-snooping
stp no-agreement-check
stp root-protection
stp loop-protection
1-38
Remarks
—
Required
In Ethernet port view, the configuration
mentioned below takes effect on the
current port only.
Optional
10 by default
Required
By default, no port is an edge port.
Optional
By default, MSTP automatically
calculates the path cost of each port.
Optional
The default setting is auto; namely the
device automatically detects whether
an Ethernet port connects to a
point-to-point link.
Optional
Enabled by default.
Required
Required
Disabled by default
Required
Disabled by default
Required
Disabled by default
Required
Disabled by default