Multiple Rapid Spanning Tree Protocol Status - ZyXEL Communications GS3700 Series User Manual

Table 46 Advanced Application > Spanning Tree Protocol > MRSTP (continued)
LABEL
Forwarding Delay
Port
*
Active
Edge
Priority
Path Cost
Tree
Apply
Cancel

11.7 Multiple Rapid Spanning Tree Protocol Status

Click Advanced Application > Spanning Tree Protocol in the navigation panel to display the
status screen as shown next. See
Note: This screen is only available after you activate MRSTP on the Switch.
Chapter 11 Spanning Tree Protocol
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 displays the port number.
Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row
first to set the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Select this check box to activate STP on this port.
Select this check box to configure a port as an edge port when it is directly attached to a
computer. An edge port changes its initial STP port state from blocking state to forwarding
state immediately without going through listening and learning states right after the port
is configured as an edge port or when its link status changes.
Note: An edge port becomes a non-edge port as soon as it receives a Bridge Protocol Data
Unit (BPDU).
Configure the priority for each port here.
Priority decides which port should be disabled when more than one port forms a loop in
the Switch. Ports with a higher priority numeric value are disabled first. The allowed range
is between 0 and 255 and the default value is 128.
Path cost is the cost of transmitting a frame on to a LAN through that port. It is
recommended that you assign this value according to the speed of the bridge. The slower
the media, the higher the cost - see
Select which STP tree configuration this port should participate in.
Click Apply to save your changes to the Switch's run-time memory. The Switch loses
these changes if it is turned off or loses power, so use the Save link on the top navigation
panel to save your changes to the non-volatile memory when you are done configuring.
Click Cancel to begin configuring this screen afresh.
Section 11.1 on page 106
GS3700/XGS3700 Series User's Guide
116
Table 41 on page 106 for more information.
for more information on MRSTP.