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Chapter 25 Spanning Tree Protocol
Table 51 Spanning Tree Protocol (continued)
LABEL
Forwarding Delay
Port
Active
Priority
Path Cost
Apply
Cancel
194
DESCRIPTION
This is the maximum time (in seconds) a switch will wait before changing states.
This delay is required because every switch must receive information about
topology changes before it starts to forward frames. In addition, each port needs
time to listen for conflicting information that would make it return to a blocking
state; otherwise, temporary data loops might result. The allowed range is 4 to 30
seconds.
As a general rule:
Note: 2 * (Forward Delay - 1) >= Max Age >= 2 * (Hello Time + 1)
This field identifies the Ethernet port.
Select this check box to activate STP on this port.
Configure the priority for each port here.
Priority decides which port should be disabled when more than one port forms a
loop in a switch. Ports with a higher priority numeric value are disabled first. The
allowed range is between 0 and 255 and default value is 128.
Path cost is the cost of transmitting a frame on to a LAN through that port. It is
assigned according to the speed of the bridge. The slower the media, the higher
the cost.
Click Apply to save your changes to the IES-1248's volatile memory. The IES-
1248 loses these changes if it is turned off or loses power, so use the Config
Save link on the navigation panel to save your changes to the non-volatile
memory when you are done configuring.
Click Cancel to begin configuring this screen afresh.
IES-1248-71/73 User's Guide
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Troubleshooting
