Chapter 21 Appendix A: Operation Commands
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Command: >set sntp interval
Syntax: set sntp interval
Explanation: This command sets the SNTP server polling interval, which is the elapsed time in seconds
between each request.
Parameters: interval indicates the elapsed time in seconds between each time request. The range of
this interval is from 20 to 86400 sec; the default value is 1800 sec.
Command: >set sntp state
Syntax: set sntp state setting
Explanation: This command can enable or disable the SNTP service.
Parameters: setting “on” to enable the SNTP service; “off” to disable the SNTP service.
Note: This device does not retain time and date information across power cycles.
Unless you want to reconfigure the system time counter each time the system
is reset, it is recommended that you use the SNTP feature.
Command: >set spantree age
Syntax: set spantree age max_age
Explanation: sets the maximum age of received protocol information before it is discarded. That is, when
this router is the root bridge, if a non-root bridge has not received a hello message within
the time period set by maximum age, the non-root bridge assumes that a network failure
has occurred and the bridges can begin reconfiguring the network.
Parameters: max_age the maximum age (in seconds) of received protocol information before it is
discarded. The possible values range from 6 to 40.seconds. The default value is
20 seconds
Note: The default value of 20 seconds is recommended in the STP/RSTP. If you change this
value, the following relationships must be observed:
2 x (Bridge_Forward_Delay – 1.0 seconds) >= Bridge_Max_Age
Bridge_Max_Age >= 2 x (Bridge_Hello_Time + 1.0 seconds)
Command: >set spantree br_prior
Syntax: set spantree br_prior priority
Explanation: This command sets the bridge priority.
Parameters: priority the value can be set from 0 to 65535. The value 0 is the highest priority. Default
value is 32768.
Note: If STP/RSTP is used on a bridged network, one bridge will be selected as the root. The root bridge is
the one with the highest bridge priority setting. If the root bridge goes down, the one with the next highest
priority takes over. If two bridges have the same priority, the lower numbered MAC address becomes the
root. You can display the current spanning tree bridge priority with the “show spantree” command.
Command: >set spantree cost
Syntax: set spantree cost port cost
Explanation: Set a bridge port’s cost
Parameters: port identifies the bridge port by name. (LAN1, WAN1, PVC1 ~ PVC10)
cost can be set from 1 to 65535.
Note: The path cost reflects the line speed. It is recommended that default values
of this parameter for each Bridge Port be based on the values shown in Table 19-3,
below. The values should be chosen according to the speed of the network segment
each Port is attached to.
Table 21-6 Set Spantree Cost Table
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