D-Link xStack DGS-3600 Series User Manual - Stp Port Settings

xStack DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch 

 Parameter                      Description 

MSTI ID 

Displays the MSTI ID of the instance being modified. An entry of 0 in this field denotes the 

CIST (default MSTI). 

Type 

The Type field in this window will be permanently set to 

Set Priority Only

. 

Priority (0-61440) 

Enter the new priority in the Priority

field. The user may set a priority value between 0-

61440. 

Click 

Apply

 to implement the new priority setting. 

STP Port Settings 

STP can be set up on a port per port basis. To

view the STP Port Settings window click 

L2

Features > Spanning Tree > STP Port

Settings

. 

In addition to setting Spanning Tree parameters

for use on the switch level, the Switch allows for

the configuration of groups of ports, each port-

group of which will have its own spanning tree,

and will require some of its own configuration

settings. An STP Group will use the switch-level

parameters entered above, with the addition of

Port Priority and Port Cost. An STP Group

spanning tree works in the same way as the

switch-level spanning tree, but the root bridge

concept is replaced with a root port concept. A

root port is a port of the group that is elected

based on port priority and port cost, to be the

connection to the network for the group.

Redundant links will be blocked, just as

redundant links are blocked on the switch level.

The STP on the switch level blocks redundant

links between switches (and similar network

devices). The port level STP will block redundant

links within an STP Group. 

It is advisable to define an STP Group to

correspond to a VLAN group of ports. 

                                                                    Figure 7- 36.  STP Port Settings window 

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