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20-4
User Guide for the Avaya P580 and P882 Multiservice Switches, v6.0
Chapter 20
Automatic Client Port Pruning, if enabled, will remove a client port from a
session if no IGMP reports have been received on that port for that session
in the time specified.
* Note: By enabling Automatic Client Port Pruning, there is a chance
that the switch may disrupt multicast service temporarily to
clients requesting to receive that multicast traffic. This is
because of the report suppression mechanism in IGMP v1 and
v2.
Automatic Router Port pruning, if enabled, will prune quiet router ports. If
the switch has not been notified that there is a router on the port in Router
Pruning Time, then the router port is removed.
The Dissemination
Process, LGMP
and CGMP
Snooping
The Dissemination Process provides a method to dynamically configure
multicast sessions on switches with VLANs that do not have IP interfaces.
See
Figure 20-1. LGMP and CGMP Snooping
Switch 1 will route the multicast traffic from the Multicast Server on VLAN
1 to VLAN 2. Switch 2 does not have an IP interface on VLAN 2. Because
the Learning Process requires an IP interface to perform learning, a different
method must be used to create multicast sessions on Switch 2. Switch 1
must disseminate the Intelligent Multicast information to all switches on the
attached VLANs that do not have IP interfaces. Two protocols are available
for this use on the Switch, LGMP and CGMP.
LGMP and CGMP are similar protocols. Both protocols have a server
implementation that runs on a switch that implements the Learning Process,
and both protocols have a client implementation which runs on switches
that do not have local IP interfaces on all involved VLANs. For the Avaya
Содержание Cajun P580
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Страница 323: ...Document No 650 100 700 Issue 1 12 7 Configuring IP Routing Figure 12 3 Add IP Interface Web Screen...
Страница 419: ...Document No 650 100 700 Issue 1 13 9 Configuring Access Lists Figure 13 3 IP Extended Access Rule Creation Dialog Box...
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