H3C Technologies H3C S3100 Series Switches - Manual (Page 189)

Operation Manual – MSTP
H3C S3100-52P Ethernet Switch
Chapter 1 MSTP Configuration
1-14
device sending packets in dot1s format. If packets in legacy format are received,
the corresponding ports are set to the discarding state to prevent network storm.
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All the ports in an aggregation group use the same MSTP packet format.
I. Configuration procedure
Table 1-7 Configure MSTP packet format for the port
Operation Command Description
Enter system view system-view —
Enter Ethernet port
view interface interface-type
interface-number
—
Configure MSTP
packet format for the
port
stp compliance { auto |
dot1s | legacy }
Required
By default, an MSTP packet
is in legacy format.
II. Configuration Example
# Configure the MSTP packet format as dot1s (802.1s).
system-view
[H3C] interface Ethernet1/0/1
[H3C-Ethernet1/0/1] stp compliance dot1s
# Restore the MSTP packet format to the default value.
[H3C-Ethernet1/0/1] undo stp compliance
1.2.6 Configuring the MSTP Operation Mode
A MSTP-enabled switch can operate in one of the following operation modes:
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STP-compatible mode: In this mode, all ports of the switches send STP packets. If
the switched network contains STP-enabled switches, you can configure the
current MSTP-enabled switch to operate in this mode by using the stp mode stp
command.
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RSTP-compatible mode: In this mode, all ports of the switches send RSTP
packets. If the switched network contains RSTP-enabled switches, you can
configure the current MSTP-enabled switch to operate in this mode by using the
stp mode rstp command.
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MSTP mode: In this mode, all the ports of the switches send MSTP packets or
STP packets (if the port is connected to an STP-enabled switch). In this case, the
multiple spanning tree function is enabled as well.