D-Link DES-3028 User Manual - Spanning Tree

DES-3028 DES-3028P DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch 

All UDP multicast packets will be forwarded to the router port. Because routers do not send IGMP reports or 

implement IGMP snooping, a multicast router connected to the router port of a Layer 3 switch would not be able to 

receive UDP data streams unless the UDP multicast packets were all forwarded to the router port. 

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A router port will be dynamically configured when IGMP query packets, RIPv2 multicast, DVMRP multicast or PIM-DM 

multicast packets are detected flowing into a port.   

Open the IGMP Snooping folder and the click on the Static Router Ports Settings link to open the Static Router Port Settings 

window, as shown below. 

Figure 7- 14. Static Router Ports Settings window 

The Static Router Ports Settings page (shown above) displays all of the current entries to the Switch's static router port table. To 

modify an entry, click the Modify button. This will open the following window: 

Figure 7- 15. Static Router Ports Settings - Edit window 

The following parameters can be set: 

Parameter                       Description 

VID (VLAN ID) 

This is the VLAN ID that, along with the VLAN Name, identifies the VLAN where the 

multicast router is attached. 

VLAN Name 

This is the name of the VLAN where the multicast router is attached. 

Member Ports 

These are the ports on the Switch that will have a multicast router attached to them. 

Click Apply to implement the new settings, Click the 

Show All Static Router Port Entries

 link to return to the Current 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 MSTP.  802.1d STP will 

be familiar to most networking professionals. However, since 802.1w RSTP 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 

and 802.1w RSTP. 

802.1w Rapid Spanning Tree 

The Switch implements two versions of the Spanning Tree Protocol, the Rapid Spanning Tree Protocol (RSTP) as defined by the 

IEEE 802.1w specification and a version compatible with the IEEE 802.1d STP. RSTP can operate with legacy equipment 

implementing IEEE 802.1d, however the advantages of using RSTP will be lost.   

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