© Copyright Lenovo 2017
Chapter 4: Configuration Commands
459
Flooding VLAN Configuration Menu
The
following
table
describes
the
Flooding
VLAN
commands.
Table 248.
Flooding
VLAN
Menu
Options
Command Syntax and Usage
[no]
flood
Enables
or
disables
the
switch
to
flood
unregistered
IP
multicast
traffic
to
all
ports.
The
default
setting
is
enabled
.
Note:
If
none
of
the
IGMP
hosts
reside
on
the
VLAN
of
the
streaming
server
for
a
IPMC
group,
you
must
enable
IGMP
flooding
to
ensure
that
multicast
data
is
forwarded
across
the
VLANs
for
that
IPMC
group.
Command
mode
:
VLAN
[no]
cpu
Enables
or
disables
the
switch
to
forward
unregistered
IP
multicast
traffic
to
the
MP,
which
adds
an
entry
in
the
IPMC
table,
as
follows:
If
no
Mrouter
is
present,
drop
subsequent
packets
with
same
IPMC.
If
a
Mrouter
is
present,
forward
subsequent
packets
to
the
Mrouter(s)
on
the
ingress
VLAN.
The
default
setting
is
enabled
.
Note
:
If
both
flood
and
cpu
are
disabled,
the
switch
drops
all
unregistered
IPMC
traffic.
Command
mode
:
VLAN
[no]
optflood
Enables
or
disables
optimized
flooding.
When
enabled,
optimized
flooding
avoids
packet
loss
during
the
learning
period.
The
default
setting
is
disabled
.
Command
mode
:
VLAN
show
vlan
<VLAN
ID
(1
‐
4094)>
information
Displays
the
current
flooding
parameters
for
the
selected
VLAN.
Command
mode
:
All
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