Edge-Core ECS4660-28F, Management Manual, Page: 658 / 2020

C
HAPTER
15
| Multicast Filtering
Multicast VLAN Registration for IPv4
– 658 –
group to the participating interfaces (see "Assigning Static MVR
Multicast Groups to Interfaces" on page 667 ).
◆
Although MVR operates on the underlying mechanism of IGMP
snooping, the two features operate independently of each other. One
can be enabled or disabled without affecting the behavior of the other.
However, if IGMP snooping and MVR are both enabled, MVR reacts only
to join and leave messages from multicast groups configured under
MVR. Join and leave messages from all other multicast groups are
managed by IGMP snooping. Also, note that only IGMP version 2 or 3
hosts can issue multicast join or leave messages.
C
ONFIGURING
MVR
G
LOBAL
S
ETTINGS
Use the Multicast > MVR (Configure Global) page to configure proxy
switching and the robustness variable.
CLI R
EFERENCES
◆
"MVR for IPv4" on page 1478
P
ARAMETERS
These parameters are displayed:
◆
Proxy Switching – Configures MVR proxy switching, where the source
port acts as a host, and the receiver port acts as an MVR router with
querier service enabled. (Default: Enabled)
■
When MVR proxy-switching is enabled, an MVR source port serves
as the upstream or host interface, and the MVR receiver port serves
as the querier. The source port performs only the host portion of
MVR by sending summarized membership reports, and
automatically disables MVR router functions.
■
Receiver ports are known as downstream or router interfaces.
These interfaces perform the standard MVR router functions by
maintaining a database of all MVR subscriptions on the downstream
interface. Receiver ports must therefore be configured on all
downstream interfaces which require MVR proxy service.
■
When the source port receives report and leave messages, it only
forwards them to other source ports.
■
When receiver ports receive any query messages, they are dropped.
■
When changes occurring in the downstream MVR groups are
learned by the receiver ports through report and leave messages,
an MVR state change report is created and sent to the upstream
source port, which in turn forwards this information upstream.
■
When MVR proxy switching is disabled:
■
Any membership reports received from receiver/source ports
are forwarded to all source ports.