Multicast Filtering
236
Instruction Manual - NXA-ENET8-POE+
Perform these steps to configure general settings for IGMP Snooping and Query:
1.
Click
Multicast
>
IGMP Snooping
>
General
.
2.
Adjust the IGMP settings as required.
3.
Click
Apply
.
Specifying Static Interfaces for a Multicast Router
Use the Multicast > IGMP Snooping > Multicast Router (Add Static Multicast Router) page to statically attach an interface to a
multicast router/switch.
Depending on network connections, IGMP snooping may not always be able to locate the IGMP querier. Therefore, if the IGMP
querier is a known multicast router/ switch connected over the network to an interface (port or trunk) on the switch, the interface
(and a specified VLAN) can be manually configured to join all the current multicast groups supported by the attached router. This
can ensure that multicast traffic is passed to all the appropriate interfaces within the switch.
Command Usage
IGMP Snooping must be enabled globally on the switch (see the
Configuring IGMP Snooping and Query Parameters
page 234) before a multicast router port can take effect.
The following table lists the options on this page:
Forwarding Priority
Assigns a CoS priority to all multicast traffic. (Range: 0-7, where 7 is the highest priority; Default:
Disabled)
This parameter can be used to set a high priority for low-latency multicast traffic such as a
video-conference, or to set a low priority for normal multicast traffic not sensitive to latency.
Version Exclusive
Discards any received IGMP messages which use a version different to that currently configured by
the IGMP Version attribute. (Default: Disabled)
IGMP Unsolicited Report Interval
Specifies how often the upstream interface should transmit unsolicited IGMP reports when proxy
reporting is enabled. (Range: 1-65535 seconds, Default: 400 seconds)
When a new upstream interface (that is, uplink port) starts up, the switch sends unsolicited reports
for all currently learned multicast channels via the new upstream interface.
This command only applies when proxy reporting is enabled.
Router Port Expire Time
The time the switch waits after the previous querier stops before it considers it to have expired.
(Range: 1-65535, Recommended Range: 300-500 seconds, Default: 300)
IGMP Snooping Version
Sets the protocol version for compatibility with other devices on the network. This is the IGMP
Version the switch uses to send snooping reports. (Range: 1-3; Default: 2)
This attribute configures the IGMP report/query version used by IGMP snooping. Versions 1 - 3
are all supported, and versions 2 and 3 are backward compatible, so the switch can operate with
other devices, regardless of the snooping version employed.
Querier Status
When enabled, the switch can serve as the Querier, which is responsible for asking hosts if they
want to receive multicast traffic. This feature is not supported for IGMPv3 snooping. (Default:
Disabled)
FIG. 276
Configuring General Settings for IGMP Snooping
Multicast - IGMP Snooping (Multicast Router) Options
Add Static Multicast Router
VLAN
Selects the VLAN which is to propagate all multicast traffic coming from the attached multicast
router. (Range: 1-4094)
Interface
Activates the Port or Trunk scroll down list.
Multicast - IGMP Snooping (General) Options