D-Link DGS-3312SR [186/290] Pim dm g

D-Link DGS-3312SR [186/290] Pim dm g
DGS-3312SR Stackable Gigabit Layer 3 Switch
PIM
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 (‘pr
Because a m
point in the
messages to all interfaces on that oving ‘prune’ information is the Join/Prune Interval.
PIM-DM G
To use PIM-
PIM-DM glo
enabled and , go to Configuration > Layer 3 IP
Networking to the following screen:
unes’ them) from the multicast delivery tree.
ember of a pruned branch of a multicast delivery tree may want to join a multicast delivery group (at some
future), the protocol periodically removes the ‘prune’ information from its database and floods multicast
branch. The interval for rem
lobal Setting
DM on the Switch it must be enabled globally. Use the PIM-DM Global Setting window to enable or disable
bally. Disabling PIM-DM will not affect any PIM-DM settings that have been configured so it can later be
apply the same settings. To enable PIM-DM globally on the Switch
> IP Multicast > PIM > PIM-DM Interface Settings. This will give the user access
Figure 5- 54. PIM-DM Global Setting window
Select Enabled or Disabled
PIM-DM Interface Settings
To view the PIM-DM Interface Settings, click Configuration > Layer 3 IP Networking > IP Multicast > PIM > PIM-
s. Th witch.
Each IP interface configur witch 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
etting
and click on the Apply button to make the change.
DM Interface Setting is window allows the PIM-DM to be configured for each IP interface defined on the S
ed on the S
PIM-DM Interface S s window:
Figure 5- 55. PIM-DM Interface Settings window
PIM-DM settings can be configured on the Switch for existing IP interfaces. Each IP interface configured on the Switch is
-DM terface
Name:
displayed
in the PIM Interface Settings window. To configure an IP interface click on the hyperlinked In
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