Dell S6000-ON, Руководство по настройке

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spanning-tree 0
Modifying Global Parameters
You can modify the spanning tree parameters. The root bridge sets the values for forward-delay, hello-
time, and max-age and overwrites the values set on other bridges participating in STP.
NOTE: Dell Networking recommends that only experienced network administrators change the
spanning tree parameters. Poorly planned modification of the spanning tree parameters can
negatively affect network performance.
The following table displays the default values for STP.
Table 90. STP Default Values
STP Parameters Default Value
Forward Delay 15 seconds
Hello Time 2 seconds
Max Age 20 seconds
Port Cost
• 100-Mb/s Ethernet interfaces
• 1-Gigabit Ethernet interfaces
• 10-Gigabit Ethernet interfaces
• Port Channel with 100 Mb/s Ethernet interfaces
• Port Channel with 1-Gigabit Ethernet interfaces
• Port Channel with 10-Gigabit Ethernet
interfaces
• 19
• 4
• 2
• 18
• 3
• 1
Port Priority 8
• Change the
forward-delay
parameter (the wait time before the interface enters the Forwarding
state).
PROTOCOL SPANNING TREE mode
forward-delay seconds
The range is from 4 to 30.
The default is 15 seconds .
• Change the
hello-time
parameter (the BPDU transmission interval).
PROTOCOL SPANNING TREE mode
hello-time seconds
NOTE: With large configurations (especially those with more ports) Dell Networking
recommends increasing the hello-time.
The range is from 1 to 10.
the default is 2 seconds .
• Change the
max-age
parameter (the refresh interval for configuration information that is generated
by recomputing the spanning tree topology).
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Spanning Tree Protocol (STP)