M Ld S Nooping - Black Box LPB2910A User Manual

2-­‐11.2 M LD S nooping
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: I n a n a pplication s uch a s d esktop c onferencing, a n etwork n ode m ay a ct a s b oth a s ource a nd
an M LD h ost, b ut M LD i nteracts w ith t hat n ode o nly i n i ts r ole a s a n M LD h ost.)
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 a ddress t o u se. ( NOTE: T his i s a f unction o f t he a pplication s oftware, n ot o f M LD.)
When M LD s nooping i s e nabled o n a V LAN, t he s witch a cts t o m inimize u nnecessary m ulticast t raffic.
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 t hat h ave n o M LD h osts.
2-­‐11.2.1 B asic C onfiguration
The s ection w ill e xplain h ow t o c onfigure t he M LD S nooping b asic c onfiguration a nd t he p arameters.
Web I nterface
To c onfigure t he M LD S nooping C onfiguration i n t he w eb i nterface:
1. Click C onfiguration, M LD S nooping, B asic C onfiguration.
2. Enable or disable the Global configuration parameters. Enable the port to join a Router port and
Fast L eave.
3. Scroll t o s elect t he T hrottling m ode w ith u nlimited o r 1 t o 1 0.
4. Click S ave t o s ave t he s etting.
5. To c ancel t he s etting, c lick t he R eset b utton. I t w ill r evert t o p reviously s aved v alues.
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Publication date: Sept, 2015
Revision A1