Brocade Converged Enhanced Ethernet Administrator's Guide v6.1.2_cee (53-1001258-01, June 2009)

Converged Enhanced Ethernet Administrator’s Guide 51
53-1001258-01
STP, RSTP, and MSTP configuration procedures
4
STP and RSTP-specific configuration procedures
Specifying the bridge hello time
In STP or RSTP mode, use this command to configure the bridge hello time. The hello time
determines how often the switch interface broadcasts hello Bridge Protocol Data Units (BPDUs) to
other devices.
To specify the bridge hello time, perform the following steps from Privileged EXEC mode:
RSTP and MSTP-specific configuration procedures
Specifying the transmit hold count
In RSTP and MSTP mode, use this command to configure the BPDU burst size by specifying the
transmit hold count value. The command configures the maximum number of BPDUs transmitted
per second for RSTP and MSTP.
To specify the transmit hold count, perform the following steps from Privileged EXEC mode:
Step Task Command
1. Enter global configuration mode. switch>#config t
Enter configuration commands, one
per line. End with CNTL/Z.
switch(config)#
2. Enter a mode (STP or RSTP). switch(config)#protocol
spanning-tree stp
3. Specify the time range in seconds for the interval
between the hello BPDUs sent on an interface. The range
is 1 through 10 seconds. The default is 2 seconds.
When configuring the hello-time, the max-age setting
must be greater than the hello-time setting. The following
relationship should be kept:
2*(forward_delay - 1)>=max_age>=2*(hello_time + 1)
switch(conf-stp)#hello-time
seconds
4. Display the spanning-tree configuration. switch(conf-stp)#do show
spanning-tree
Step Task Command
1. Enter global configuration mode. switch>#config t
Enter configuration commands, one per
line. End with CNTL/Z.
switch(config)#
2. Specify the transmit hold count. The default is
6 seconds. Syntax is as follows:
• number—Specifies the number of
seconds that BPDUs are sent before
pausing for 1 second. The range is 1
through 10. The default is 6 seconds.
switch(config)#transmit-holdcount number
3. Display the MSTP configuration. switch(conf-stp)#do show spanning-tree
mst detail