Operation Manual – Multicast Protocol
H3C S3610&S5510 Series Ethernet Switches
Chapter 3 MLD Snooping Configuration
3-3
Note:
z
Whenever mentioned in this document, a router port is a router-connecting port on
the switch, rather than a port on a router.
z
On an MLD-snooping-enabled switch, the ports that received MLD general queries
with the source address other than 0::0 or IPv6 PIM hello messages are router
ports.
II. Aging timers for dynamic ports in MLD Snooping
Table 3-1
Aging timers for dynamic ports in MLD Snooping and related messages and
actions
Timer
Description
Message before
expiry
Action after
expiry
Router port aging
timer
For each router
port, the switch
sets a timer
initialized to the
aging time of the
route port.
MLD general
query of which the
source address is
not 0::0 or IPv6
PIM hello.
The switch
removes this port
from its router port
list.
Member port aging
timer
When a port joins
an IPv6 multicast
group, the switch
sets a timer for the
port, which is
initialized to the
member port aging
time.
MLD report
message.
The switch
removes this port
from the IPv6
multicast group
forwarding table.
Note:
The port aging mechanism of MLD Snooping works only for dynamic ports; a static port
will never age out.
3.1.3 How MLD Snooping Works
A switch running MLD Snooping performs different actions when it receives different
MLD messages, as follows:
