Pim-Dm Interface Configuration; Pim-Dm Configuration - D-Link xStack DGS-3600 User Manual

xStack DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch

PIM-DM Interface Configuration

The Protocol Independent Multicast - Dense Mode (PIM-DM) protocol should be used in networks with a low delay (low latency)
and high bandwidth as PIM-DM is optimized to guarantee delivery of multicast packets, not to reduce overhead.
The PIM-DM multicast routing protocol is assumes that all downstream routers want to receive multicast messages and relies
upon explicit prune messages from downstream routers to remove branches from the multicast delivery tree that do not contain
multicast group members.
PIM-DM has no explicit 'join' messages. It relies upon periodic flooding of multicast messages to all interfaces and then either
waiting for a timer to expire (the Join/Prune Interval) or for the downstream routers to transmit explicit 'prune' messages
indicating that there are no multicast members on their respective branches. PIM-DM then removes these branches ('prunes'
them) from the multicast delivery tree.
Because a member of a pruned branch of a multicast delivery tree may want to join a multicast delivery group (at some point in
the future), the protocol periodically removes the 'prune' information from its database and floods multicast messages to all
interfaces on that branch. The interval for removing 'prune' information is the Join/Prune Interval.

PIM-DM Configuration

To enable PIM-DM globally on the Switch, go to L3 Features > IP Multicast Routing Protocol > PIM-DM > PIM-DM Global
Settings. This will give the user access to the following screen:
Figure 8- 71. PIM DM Global Setting window
Use the pull down menu, choose Enabled, and click Apply to set the PIM-DM function on the Switch.
PIM-DM Interface Configuration
To view the PIM-DM Table, click L3 Features > IP Multicast Routing Protocol > PIM-DM > PIM-DM Interface Settings.
This window allows the PIM-DM to be configured for each IP interface defined on the Switch. Each IP interface configured on
the Switch is displayed in the below PIM-DM Interface Settings dialog box. To configure PIM-DM for a particular interface,
click the corresponding hyperlink for that IP interface. This will open the PIM-DM Interface Settings window:
Figure 8- 72. PIM-DM Interface Settings window
To view the configuration window for a specific entry, click its corresponding Modify button, revealing the following window.
Figure 8- 73. PIM-DM Interface Settings - Edit window
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