Spanning Tree; 802.1S Mstp - D-Link DGS-3024 Manual

The following parameters can be viewed or set:
Parameter Description
VID (VLAN ID)
VLAN Name
Member Ports
Click Apply to implement the new settings, Click the
Static Router Port Entries window.

Spanning Tree

This Switch supports three versions of the Spanning Tree Protocol; 802.1d STP, 802.1w Rapid STP and 802.1s MSTP.
802.1d STP will be familiar to most networking professionals. However, since 802.1w RSTP and 802.1s MSTP has been
recently introduced to D-Link managed Ethernet Switches, a brief introduction to the technology is provided below
followed by a description of how to set up 802.1d STP, 802.1w RSTP and 802.1s MSTP.

802.1s MSTP

Multiple Spanning Tree Protocol, or MSTP, is a standard defined by the IEEE community that allows multiple VLANs to
be mapped to a single spanning tree instance, which will provide multiple pathways across the network. Therefore, these
MSTP configurations will balance the traffic load, preventing wide scale disruptions when a single spanning tree instance
fails. This will allow for faster convergences of new topologies for the failed instance. Frames designated for these VLANs
will be processed quickly and completely throughout interconnected bridges utilizing either of the three spanning tree
protocols (STP, RSTP or MSTP).
This protocol will also tag BDPU packets so receiving devices can distinguish spanning tree instances, spanning tree
regions and the VLANs associated with them. These instances will be classified by an MSTI ID. MSTP will connect
multiple spanning trees with a Common and Internal Spanning Tree (CIST). The CIST will automatically determine each
MSTP region, its maximum possible extent and will appear as one virtual bridge that runs a single spanning tree.
Consequentially, frames assigned to different VLANs will follow different data routes within administratively established
regions on the network, continuing to allow simple and full processing of frames, regardless of administrative errors in
defining VLANs and their respective spanning trees.
Each Switch utilizing the MSTP on a network will have a single MSTP configuration that will have the following three
attributes:
DGS-3024 Gigabit Ethernet Switch Manual
Figure 7- 12. Static Router Ports Settings window
This is the VLAN ID that, along with the VLAN Name, identifies the VLAN where the
multicast router is attached.
This is the name of the VLAN where the multicast router is attached.
These are the ports on the Switch that will have a multicast router attached to them.
Show All Static Router Port Entries
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