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stp mode
Syntax
stp mode { stp | rstp | mstp }
undo stp mode
View
System view
Parameters
stp: Specifies the STP-compatible mode.
mstp: Specifies the MSTP mode.
rstp: Specifies the RSTP-compatible mode.
Description
Use the stp mode command to set the operating mode of an MSTP-enabled switch.
Use the undo stp mode command to restore the default operating mode of an MSTP-enabled switch.
By default, an MSTP-enabled switch operates in MSTP mode.
To make a switch compatible with STP and RSTP, MSTP provides following three operating modes.
z STP-compatible mode, where the ports of a switch send STP BPDUs to neighboring devices. If
STP-enabled switches exist in a switched network, you can use the stp mode stp command to
configure an MSTP-enabled switch to operate in STP-compatible mode.
z RSTP-compatible mode, where the ports of a switch send RSTP BPDUs to neighboring devices. If
RSTP-enabled switches exist in a switched network, you can use the stp mode rstp command to
configure an MSTP-enabled switch to operate in RSTP-compatible mode.
z MSTP mode, where the ports of a switch send MSTP BPDUs and STP BPDUs (if the switch is
connected to STP-enabled switches) to neighboring devices. In this case, the switch is
MSTP-capable.
Related commands: stp mcheck, stp, stp interface, stp interface mcheck.
Examples
# Configure the MSTP operation mode as STP-compatible.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stp mode stp
stp no-agreement-check
Syntax
z Ethernet port view:
stp no-agreement-check
undo stp no-agreement-check
z System view:
stp interface interface-type interface-number no-agreement-check
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