Lantronix SISPM1040-3166-L Web User Guide Rev G PDF 14.13 MB - Page 208

MLD Snooping

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Transition Networks SISPM1040-3xxx-L Web User Guide 13-2 MLD Snooping Curiously enough, a network node that acts as a source of IPv6 multicast traffic is only an indirect participant in MLD snooping-it just provides multicast traffic, and MLD doesn't interact with it. (Note, however, that in an application like desktop conferencing a network node may act as both a source and an MLD host; but MLD interacts with that node only in its role as an MLD host.) A source node creates multicast traffic by sending packets to a multicast address. In IPv6, addresses with the first eight bits set (that is, "FF" as the first two characters of the address) are multicast addresses, and any node that listens to such an address will receive the traffic sent to that address. Application software running on the source and destination systems cooperates to determine what multicast address to use. (Note that this is a function of the application software, not of MLD.) When MLD snooping is enabled on a VLAN, the switch acts to minimize unnecessary multicast traffic. If the switch receives multicast traffic destined for a given multicast address, it forwards that traffic only to ports on the VLAN that have MLD hosts for that address. It drops that traffic for ports on the VLAN that have no MLD hosts Figure 3-2: MLD snooping enable 13-2.1 Basic Configuration This page lets you configure MLD Snooping basic parameters. Web Interface To configure the MLD Snooping Configuration in the web interface: 1. Click Multicast, MLD Snooping, and Basic Configuration. 2. Set the Global configuration parameters. 3. Select the port to join Router port and Fast Leave. 4. Select the Throttling mode (unlimited or 1 to 10). 5. Set the Profile. 6. Click the Apply button to save the settings. 33763 Rev. G https://www.transition.com Page 208 of 496

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Transition Networks
SISPM1040-3xxx-L Web User Guide
33763 Rev. G
Page
208
of
496
13-2 MLD Snooping
Curiously enough, a network node that acts as a source of IPv6 multicast traffic is only an indirect participant in
MLD snooping
it just provid
es multicast traffic, and MLD doesn’t interact with it. (Note, however, that in an
application like desktop conferencing a network node may act as both a source and an MLD host; but MLD
interacts with that node only in its role as an MLD host.)
A source node creates multicast traffic by sending packets to a multicast address. In IPv6, addresses with the first
eight bits set (that is, “FF” as the first two characters of the address) are multicast addresses, and any node that
listens to such an address will receive the traffic sent to that address. Application software running on the source
and destination systems cooperates to determine what multicast address to use. (Note that this is a function of
the application software, not of MLD.)
When MLD snooping is enabled on a VLAN, the switch acts to minimize unnecessary multicast traffic. If the switch
receives multicast traffic destined for a given multicast address, it forwards that traffic only to ports on the VLAN
that have MLD hosts for that address. It drops that traffic for ports on the VLAN that have no MLD hosts
Figure 3-2: MLD snooping enable
13-2.1 Basic Configuration
This page lets you configure MLD Snooping basic parameters.
Web Interface
To configure the MLD Snooping Configuration in the web interface:
1.
Click Multicast, MLD Snooping, and Basic Configuration.
2.
Set the Global configuration parameters.
3.
Select the port to join Router port and Fast Leave.
4.
Select the Throttling mode (unlimited or 1 to 10).
5.
Set the Profile.
6.
Click the Apply button to save the settings.