D-Link DGS-3630 Series Reference Manual page 309

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide
Click the Edit button to modify the specified entry.
Enter a page number and click the Go button to navigate to a specific page when multiple pages exist.
After clicking the Edit button, the following page will appear.
The fields that can be configured are described below:
Parameter
PIM State
Mode
PIM Passive
Hello Interval
Figure 6-117 PIM Interface (Edit) Window
Description
Select to enable or disable the PIM state on this interface here.
Select the PIM mode here. Options to choose from are Dense Mode, Sparse
Mode, and Sparse-Dense Mode.
• Dense Mode - PIM-DM assumes that when a source starts sending, all
downstream routers wants to receive the multicast data stream. Initially
multicast data stream are flooded to all downstream routers and the
interfaces that have group members. If there are no downstream routers or
group members, the router will send prune message to indicate that the
multicast data stream is not desired.
• Sparse Mode - When multicast traffic is received on a sparse mode
interface, the first hop router will encapsulate and send the register message
to RP. If the router is not the first hop router, the traffic will be forwarded
based on the mroute entry. A sparse mode interface will only be populated
as mroute member interface if receive join message from the downstream
router or if group member on a sparse mode interface, PIM join process will
be triggered to create the shared tree or the source tree.
• Sparse-Dense Mode - When interface is configured as PIM Sparse-Dense
mode, a multicast group received by the interface can operate in either
sparse mode or dense mode of operation. When the interface receives
multicast traffic, if there is a known RP for the group, then this group will
operate in sparse mode, otherwise this multicast group will operate in dense
mode.
Select to enable or disable the PIM passive feature here. When the passive mode
is enabled, the interface will neither send PIM messages out nor accept PIM
messages from this interface. The router will act as if it is the only PIM router on
the network. Use this feature only when there is only one PIM router on the LAN.
Enter the interval at which hello messages are sent here. The range is from 1 to
18724 seconds. A PIMv2 router learns PIM neighbors via the PIM hello message.
This feature configures the frequency of the hello message. Routers configured
for IP multicasting send PIM hello messages to detect PIM routers. For SM, hello
messages also determine the router to act as the designated router for each LAN
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