User's Manual

Table Of Contents
220
Users Manual of CS-6306R
19.1.6.4 Configuring the Hello Time
The proper hello time value can ensure that the bridge detect link failures in the network without occupying
too much network resources.
Follow these configurations in the global configuration mode:
Command Purpose
spanning-tree rstp hello-time value
Configures Hello Time
no spanning-tree rstp hello-time Returns Hello Time to default value.
We recommend user to use the default value.
The default Hello Time is 4 seconds.
19.1.6.5 Configuring the Max-Age
The ma-age is the number of seconds a switch waits without receiving spanning-tree configuration messages
before attempting a reconfiguration.
Follow these configurations in the global configuration mode:
Command Purpose
spanning-tree rstp max-agevalue
Configures the max-age value.
no spanning-tree rstp max-age Returns the max-age time to default
value (20s).
We recommend user to use the default value.
if you configure the Max Age to a relatively small value, then the calculation of the
spanning tree will be relatively frequent, and the system may regard the network
block as link failure. If you configure the Max Age to a relatively big value, then the
link status will go unnoticed in time.
The Max Age of bridge is 20 seconds by default.
19.1.6.6 Configuring the Path Cost
The spanning-tree path cost default value is derived from the media speed of an interface. If a loop occurs,
spanning tree uses cost when selecting an interface to put in the forwarding state. You can assign lower cost
values to interfaces that you want selected first and higher cost values to interfaces that you want selected
last. If all interfaces have the same cost value, spanning tree puts the interface with the lowest interface
number in the forwarding state and blocks the other interfaces.
Beginning in interface configuration mode, follow these steps to configure the cost of an interface:
Command Purpose
spanning-tree rstp costvalue
Configures the cost for an interface.
no spanning-tree rstp cost Returns path cost to default value.