C
HAPTER
15
| RSTP Commands
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EXAMPLE
RSTP>delay 20
RSTP>
rstp txhold This command displays or sets RSTP Transmit Hold Count.
SYNTAX
rstp txhold [transmit-hold]
transmit-hold - The number of BPDUs a bridge port can send per
second. When exceeded, transmission of the next BPDU will be
delayed. (Range: 1-10)
DEFAULT SETTING
6
EXAMPLE
RSTP>txhold 10
RSTP>
rstp version This command displays or sets the type of spanning tree used on this
switch (RSTP or STP-compatible).
SYNTAX
rstp version [compatible | normal]
compatible - Compatible with STP.
normal - RSTP
DEFAULT SETTING
Normal
COMMAND USAGE
◆ RSTP supports connections to either RSTP or STP nodes by monitoring
the incoming protocol messages and dynamically adjusting the type of
protocol messages the RSTP node transmits, as described below:
◆ In normal mode, if RSTP is using 802.1D BPDUs on a port and receives
an RSTP BPDU after the migration delay expires, RSTP restarts the
migration delay timer and begins using RSTP BPDUs on that port.
◆ In compatible mode, if the switch receives an 802.1D BPDU (i.e., STP
BPDU) after a port's migration delay timer expires, the switch assumes
it is connected to an 802.1D bridge and starts using only 802.1D
BPDUs.
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