POEGEM24T4SFP
User
Manual
197
It
sets
a
trusted
VLAN
ID,
available
VID
from
1
to
4094.
Server
IP:
It
sets
a
trusted
DHCP
Server
IP
address
for
DHCP
Snooping.
Option
82:
It
sets
the
DHCP
Option
82
function
on
the
switch,
default
is
Disable.
Action:
Used
to
set
what
will
happen
when
the
switch
receives
a
DHCP
request
packet.
Options
are
keep,
drop
and
replace.
Note
‐
Filtering
rules
are
implemented
as
follows:
‐
If
DHCP
snooping
is
disabled,
all
DHCP
packets
are
forwarded.
‐
If
DHCP
snooping
is
enabled
and
also
enabled
on
the
VLAN
where
the
DHCP
packet
is
received,
all
DHCP
packets
are
forwarded
for
a
trusted
port.
‐
If
DHCP
snooping
is
enabled
and
also
enabled
on
the
VLAN
where
the
DHCP
packet
is
received,
but
the
port
is
not
trusted,
it
is
processed
as
follows:
‐
If
the
DHCP
packet
is
a
reply
packet
from
a
DHCP
server,
the
packet
is
dropped.
‐
If
the
DHCP
packet
is
from
a
client,
such
as
a
DISCOVER,
REQUEST
INFORM,
DECLINE
or
RELEASE
message,
the
packet
is
forwarded
if
MAC
address
verification
is
disabled.
However,
if
MAC
address
verification
is
enabled,
then
the
packet
will
only
be
forwarded
if
the
client’s
hardware
address
stored
in
the
DHCP
packet
is
the
same
as
the
source
MAC
address
in
the
Ethernet
header
‐
If
the
DHCP
packet
is
not
a
recognisable
type,
it
is
dropped.
‐
If
a
DHCP
packet
from
a
client
passes
the
filtering
criteria
above,
it
will
only
be
forwarded
to
trusted
ports
in
the
same
VLAN.
‐
If
a
DHCP
packet
is
from
a
server
and
is
received
on
a
trusted
port,
it
will
be
forwarded
to
both
trusted
and
un
‐
trusted
ports
in
the
same
VLAN.
Содержание POEGEM24T4SFP
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Страница 120: ...POEGEM24T4SFP User Manual 120 Fig 3 121 Action Fig 3 122 Rate Limiter...
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Страница 122: ...POEGEM24T4SFP User Manual 122 Fig 3 125 VLAN ID Filter Fig 3 126 VLAN ID Filter Fig 3 127 Tag Priority...
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Страница 288: ...POEGEM24T4SFP User Manual 288 POEGEM24T4SFP mirror show Mirror Mode rx Monitoring Port 2 Monitored Port 3 4 5 7 10...