D-Link D-View 5.1 User Manual page 151

D-View 5.1 User's Guide
will wait for BPDUs from the root bridge before it starts sending its own BPDUs for
permission to become the root bridge. If it turns out that this bridge has the lowest
bridge ID among the bridges on the network, it will then become the root bridge.
The Hello Time (If Root) object corresponds to the Dot1dStpBridgeHello-Time MIB
object of the dot1dStp group. This read-write object sets the hello time of the bridge for
use when operating as the root bridge on the network. This value determines the
interval between transmission of configuration BPDUs sent by the bridge (acting as the
root) to all other bridges on the network to inform them that it is still alive as the root
bridge.
The Forward Delay (If Root) object corresponds to the Dot1dStpBridge-ForwardDelay
MIB object of the dot1dStp group. This read-write object determines the forward delay
value that all bridges will use when this bridge becomes the root bridge. Forward delay
is the time any port on a bridge spends in each of the listening and learning states
when moving towards the forwarding state. To set the MIB objects (above) with read-
write attributes, follow these steps:
1. From the Information dialog box, click the Set button. The STP
Configurations dialog box appears on the screen:
2. This dialog box displays the configurable MIB objects. Priority, Aging
Time, Hello Time, and Forward Delay correspond to the
Dot1dStpPriority, Dot1dStpBridgeMaxAge, Dot1dStpBridgeHelloTime,
and Dot1dStpBrid-geForwardDelay MIB objects, respectively.
3. If you want to refresh the displayed values, click the Refresh button. You
need to do this to ensure all modifications performed by other network
administrators are reflected in this dialog box.
4. In the Priority text box, specify the bridge priority. Valid values range
from 0 to 65535, with 0 being the highest bridge priority.
5. In the Aging Time text box, specify the maximum aging time for the
bridge. Valid values range from 6 to 40 seconds.
6. In the Hello Time text box, type in the bridge hello time. Valid values
range from 1 to 10 seconds.
7. In the Forward Delay text box, specify the bridge forward delay. Valid
values range from 4 to 30 seconds.
8. Click the Set button to affect the new settings for the above MIB objects.
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