HP 1910 User Manual page 304

Figure 253 MLD snooping related ports
MLD snooping related ports include the following types:
Router port—Port on an Ethernet switch that leads the switch toward a Layer 3 multicast device
•
(designated router or MLD querier). As shown in
and Ethernet 1/0/1 of Switch B are router ports. A switch registers all its local router ports in its
router port list.
In this document, a router port is a port on the switch that leads the switch toward a Layer 3
multicast device, rather than a port on a router.
Member port—Port on an Ethernet switch that leads the switch toward IPv6 multicast group
•
members. As shown in
A and GigabitEthernet1/0/2 of Switch B are member ports. A switch registers all local member
ports in the MLD snooping forwarding table.
Unless otherwise specified, router ports and member ports in this document consist of dynamic and static
ports.
NOTE:
An MLD snooping enabled switch deems that all its ports that receive MLD general queries with the source
address other than 0::0 or that receive IPv6 PIM hello messages are dynamic router ports.
Aging timers for dynamic ports in MLD snooping and related messages and actions
Timer
Dynamic router port
aging timer
Figure 253, GigabitEthernet 1/0/2 and GigabitEthernet 1/0/3 of Switch
Description
For each dynamic router
port, the switch sets an
aging timer. When the
timer expires, the
dynamic router port ages
out.
243
Figure 253, GigabitEthernet 1/0/1 of Switch A
Message before expiry
MLD general query of
which the source address
is not 0::0 or IPv6 PIM
hello
Action after expiry
The switch removes this
port from its router port
list.