Multicast Filtering; Rapid Spanning Tree Protocol - 3Com SuperStack 3 3812 Implementation Manual

18 C 1: S
HAPTER WITCH

Multicast Filtering

Rapid Spanning Tree
Protocol
F O
EATURES VERVIEW
Parameters such as VLANs and Fast Start may be set up as required.
Other combinations of port settings, however, are not recommended
as Configuration Restore will only perform a "best effort" restore of
the configuration. For example, LACP automatic aggregations with
manually defined ports are restored as manual aggregations with
manual ports. LACP automatic aggregations with automatic ports
where the aggregated link is disabled and Spanning Tree Protocol is
disabled are restored as manual aggregations with the aggregated link
disabled.
For further information about LACP, see
Bandwidth".
When restoring a configuration onto a unit over an aggregated link,
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communication with that unit may be lost because the restore
operation disables the aggregated link ports. Communication over the
aggregated links is re-established when the restore operation has
been completed.
For detailed descriptions of the Configuration Save and Restore Web
interface operations and Command Line Interface (CLI) commands, please
refer to the Management Interface Reference Guide supplied in HTML
format on the CD-ROM that accompanies your Switch.
Multicast filtering allows the Switch to forward multicast traffic to only
the endstations that are part of a predefined multicast group, rather than
broadcasting the traffic to the whole network.
The multicast filtering system supported by your Switch uses IGMP
(Internet Group Management Protocol) snooping to detect the
endstations in each multicast group to which multicast traffic should be
forwarded.
For more information about multicast filtering, see
Multicast Filtering".
Rapid Spanning Tree Protocol (RSTP) is a bridge-based systems that
makes your network more resilient to link failure and also provides
protection from network loops — one of the major causes of broadcast
storms.
Chapter 2 "Optimizing
Chapter 3 "Using