D-Link xStack DES-6500 Cli Manual page 91

xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch CLI Manual
config stp
Restrictions
Example usage:
To configure STP with maxage 18 and maxhops of 15:
D E S - 6 5 0 0 : 4 # c o n f i g s t p m a x a g e 1 8 m a x h o p s 1 5
C o m m a n d : c o n f i g s t p m a x a g e 1 8 m a x h o p s 1 5
S u c c e s s .
has still not been received from the Root Bridge, the Switch will start
sending its own BPDU to all other switches for permission to become
the Root Bridge. If it turns out that your switch has the lowest Bridge
Identifier, it will become the Root Bridge. The user may choose a time
between 6 and 40 seconds. The default value is 20.
maxhops <value 1-20> - The number of hops between devices in a
spanning tree region before the BPDU (bridge protocol data unit)
packet sent by the Switch will be discarded. Each switch on the hop
count will reduce the hop count by one until the value reaches zero.
The Switch will then discard the BDPU packet and the information
held for the port will age out. The user may set a hop count from 1 to
20. The default is 20.
hellotime <value 1-10>  The user may set the time interval between
transmission of configuration messages by the root device in STP, or
by the designated router in RSTP, thus stating that the Switch is still
functioning. A time between 1 and 10 seconds may be chosen, with a
default setting of 2 seconds.
In MSTP, the spanning tree is configured by port and
therefore, the hellotime must be set using the configure stp ports
command for switches utilizing the Multiple Spanning Tree Protocol.
forwarddelay <value 4-30>  The maximum amount of time (in
seconds) that the root device will wait before changing states. The
user may choose a time between 4 and 30 seconds. The default is 15
seconds.
txholdcount <value 1-10> - The maximum number of BDPU Hello
packets transmitted per interval. Default value = 3.
fbpdu [enable | disable]  Allows the forwarding of STP BPDU packets
from other network devices when STP is disabled on the Switch. The
default is enable.
lbd [enable | disable] – Enabling this feature temporarily blocks STP
on the Switch when a BPDU packet has been looped back to the
Switch. When the Switch detects its own BPDU packet coming back, it
signifies a loop on the network. STP will automatically be blocked and
an alert will be sent to the administrator. The LBD STP port will restart
(change to discarding state) when the LBD Recover Time times out.
The default is enabled.
lbd_recover_timer [0 | <value 60-1000000>] - This field will set the
time the STP port will wait before recovering the STP state set. 0 will
denote that the LBD will never time out or restart until the
administrator personally changes it. The user may also set a time
between 60 and 1000000 seconds. The default is 60 seconds.
Only Administrator-level users can issue this command.
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