Reserved Addresses Excluded From Ip Multicast (Igmp) Filtering; Igmp Support - GE MultiLink ML810 Instruction Manual

CHAPTER 15: IGMP

15.1.4 Reserved Addresses Excluded from IP Multicast (IGMP) Filtering

15.1.5 IGMP Support

MULTILINK ML810 MANAGED EDGE SWITCH – INSTRUCTION MANUAL
Traffic to IP multicast groups in address range 224.0.0.0 to 224.0.0.255 will always be
flooded because addresses in this range are "well known" or "reserved". Thus, if IP Multicast
is enabled and there is an IP multicast group within the reserved address range, traffic to
that group will be flooded instead of filtered by the switch.
The MultiLink ML810 Managed Edge Switch supports IGMP version 1 and version 2. The
switch can act either as a querier or a nonquerier. The querier router periodically sends
general query messages to solicit group membership information. Hosts on the network
that are members of a multicast group send report messages. When a host leaves a group,
it sends a leave group message. The difference between Version 1 and Version 2 is that
version 1 does not have a "Leave" mechanism for the host. The MultiLink ML810 Managed
Edge Switch does pruning when there is a leave message or a time expires on a port, we
prune the multicast group membership on that port.
1. The MultiLink ML810 Managed Edge Switch supports only the default VLAN. It
can be enabled within a port VLAN, tagged VLAN, or no VLAN. It can snoop up
to 256 multi-cast Groups.
2. IGMP is disabled as a default. It has to be enabled to leverage the benefits of
IGMP.
3. The MultiLink ML810 Managed Edge Switch supports only the default VLAN. It
can be enabled within a port VLAN, tagged VLAN, or no VLAN. It can snoop up
to 256 multi-cast Groups.
4. IGMP works only on default VLAN (DEFAULT_VLAN or VID = 1).
IGMP
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