3Com S7906E - Switch, Configuration Manual

Page: 125 / 2621

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z
When STP is enabled globally on an OLT switch, you must enable STP on all ONUs.
z
STP runs normally only when all attached ONUs are 3Com ONUs.
z
STP configurations in the system view of the OLT switch take effect on all attached ONUs.
z
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… Use the command… Remarks
Enter system view
system-view
—
Enter ONU port view
interface interface-type
interface-number
Required
In Ethernet port view, the configuration
mentioned below takes effect on the
current port only.
Configure the maximum
transmission rate of the
port
stp transmit-limit
packet-number
Optional
10 by default
Configure the port as an
edge port
stp edged-port enable
Required
By default, no port is an edge port.
Configure the path cost of
the port
stp cost cost
Optional
By default, MSTP automatically
calculates the path cost of each port.
Configure the link type of
the port
stp point-to-point
{
auto
|
force-false
|
force-true
}
Optional
The default setting is
auto
; namely the
device automatically detects whether
an Ethernet port connects to a
point-to-point link.
Enable the MSTP feature
for the port
stp enable
Optional
Enabled by default.
Perform mCheck
stp mcheck
Required
Enable digest snooping
on the port
stp config-digest-snooping
Required
Disabled by default
Enable No Agreement
Check on the port
stp no-agreement-check
Required
Disabled by default
Enable root guard on the
port
stp root-protection
Required
Disabled by default
Enable loop guard on the
port
stp loop-protection
Required
Disabled by default