Networking
Configuring IPv6 Addressing
Cisco SA 500 Series Security Appliances Administration Guide
103
3
MLD Tunnels
Multicast Listener Discovery (MLD) is an IPv6 protocol that discovers listeners for a
specific multicast group. This protocol is similar to IGMP in IPv4.
STEP 1
Click
Networking
on the menu bar, and then click
IPv6 > MLD Tunnels
in the
navigation tree.
The MLD Tunnels page appears.
STEP 2
Check the box to enable MLD when this router is in IPv6 mode. Then enter the
following information:
•
Maximum query response time:
Enter the maximum amount of time (in
milliseconds) that can elapse between this router sending a host-query
message and the host replying back to it. By varying the Query Response
Interval, an administrator can tune the burstiness of MLD messages on the
link; larger values make the traffic less bursty, as host responses are spread
out over a larger interval. The minimum value of this parameter is 5000 ms (5
seconds) and maximum value is 1800000 ms (30 mins).
•
Robustness Variable:
Enter a value from 2 to 8 to allow tuning for the
expected packet loss on a link. Enter a higher value if a link is expected to be
lossy. The default value is 2. The minimum value of Robustness Variable is 2
and maximum value is 8.
•
Query Interval:
Enter the number of seconds to elapse between General
Queries sent by the device. The default value is 125 seconds. By varying the
Query Interval, an administrator can tune the number of MLD messages on
the link; larger values cause MLD Queries to be sent less often. The minimum
value of Query interval is 100 seconds and maximum value is 1800 seconds.
STEP 3
Click
Apply
to save your settings, or click
Reset
to revert to the saved settings.
