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z A Layer 2 aggregate interface can be configured to connect to a point-to-point link. If a port works in
auto-negotiation mode and the negotiation result is full duplex, this port can be configured as
connecting to a point-to-point link.
z If a port is configured as connecting to a point-to-point link, the setting takes effect for the port in all
MSTIs. If the physical link to which the port connects is not a point-to-point link and you force it to
be a point-to-point link by configuration, the configuration may incur a temporary loop.
Configuration example
# Configure port GigabitEthernet 1/0/1 as connecting to a point-to-point link.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] stp point-to-point force-true
Configuring the Mode a Port Uses to Recognize/Send MSTP Packets
A port can send/recognize MSTP packets of two formats:
z dot1s: 802.1s-compliant standard format, and
z legacy: Compatible format
By default, the packet format recognition mode of a port is auto, namely the port automatically
distinguishes the two MSTP packet formats, and determines the format of packets it will send based on
the recognized format. You can configure the MSTP packet format to be used by a port. After the
configuration, when working in MSTP mode, the port sends and receives only MSTP packets of the
format you have configured to communicate with devices that send packets of the same format.
Configuration procedure
Follow these steps to configure the MSTP packet format to be supported by a port or a group of ports:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet
interface view,
or Layer 2
aggregate
interface view
interface interface-type
interface-number
Enter
interface
view or
port group
view
Enter port
group view
port-group manual
port-group-name
Required
Use either command.
Configurations made in interface
view will take effect on the current
port only; configurations made in
port group view will take effect on
all ports in the port group.
Configure the mode the port
uses to recognize/send
MSTP packets
stp compliance { auto | dot1s
| legacy }
Optional
auto by default
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