Multicast Filtering
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Instruction Manual - NXA-ENET8-POE+
Multicast routers that are attached to ports on the switch use information obtained from IGMP, along with a multicast routing
protocol (such as PIM) to support IP multicasting across the Internet. These routers may be dynamically discovered by the switch
or statically assigned to an interface on the switch.
Perform theses steps to show the all interfaces attached to a multicast router:
1.
Click
Multicast
>
IGMP Snooping
>
Multicast Router
.
2.
Select
Current Multicast Router
from the Action list.
3.
Select the VLAN for which to display this information. Ports in the selected VLAN which are attached to a neighboring multicast
router/switch are displayed.
Assigning Interfaces to Multicast Services
Use the Multicast > IGMP Snooping > IGMP Member (Add Static Member) page to statically assign a multicast service to an
interface.
Multicast filtering can be dynamically configured using IGMP Snooping and IGMP Query messages (see the
section on page 234). However, for certain applications that require tighter control, it may be
necessary to statically configure a multicast service on the switch. First add all the ports attached to participating hosts to a
common VLAN, and then assign the multicast service to that VLAN group.
Command Usage
Static multicast addresses are never aged out.
When a multicast address is assigned to an interface in a specific VLAN, the corresponding traffic can only be forwarded to
ports within that VLAN.
The following table lists the options on this page:
Perform these steps to statically assign an interface to a multicast service:
1.
Click
Multicast
>
IGMP Snooping
>
IGMP Member
.
2.
Select
Add Static Member
from the Action list.
3.
Select the VLAN that will propagate the multicast service, specify the interface attached to a multicast service (through an
IGMP-enabled switch or multicast router), and enter the multicast IP address.
4.
Click
Apply
.
FIG. 279
Showing Current Interfaces Attached to a Multicast Router
Multicast - IGMP Snooping (IGMP Member) Options
VLAN
Specifies the VLAN which is to propagate the multicast service. (Range: 1-4094)
Interface
Activates the Port or Trunk scroll down list.
Port or Trunk
Specifies the interface assigned to a multicast router.
Multicast IP
The IP address for a specific multicast service.
FIG. 280
Assigning an Interface to a Multicast Service