© Copyright Lenovo 2016
Chapter 4: Configuration Commands
511
ARP Static Configuration
Static
ARP
entries
are
permanent
in
the
ARP
cache
and
do
not
age
out
like
the
ARP
entries
that
are
learned
dynamically.
Static
ARP
entries
enable
the
switch
to
reach
the
hosts
without
sending
an
ARP
broadcast
request
to
the
network.
Static
ARPs
are
also
useful
to
communicate
with
devices
that
do
not
respond
to
ARP
requests.
Static
ARPs
can
also
be
configured
on
some
gateways
as
a
protection
against
malicious
ARP
Cache
corruption
and
possible
DOS
attacks.
Table 265.
ARP
Static
Configuration
Options
Command Syntax and Usage
ip
arp
<IP
address>
<MAC
address>
[vlan
<
VLAN
ID
(1
‐
4094)>
]
[port
<port
alias
or
number>
]
Adds
a
permanent
ARP
entry.
To
enable
ARP
on
a
LAG,
add
the
port
number
of
a
member
of
the
LAG.
Command
mode:
Global
configuration
ip
arp
<destination
unicast
IP
address>
<destination
multicast
MAC
address>
vlan
<cluster
vlan
number>
Adds
a
static
multicast
ARP
entry
for
Network
Load
Balancing
(NLB).
Command
mode:
Global
configuration
no
ip
arp
<IP
address>
Deletes
a
permanent
ARP
entry.
Command
mode:
Global
configuration
no
ip
arp
all
[ip
<IP
interface
number>
|interface
port
<port
alias
or
number>
|vlan
<VLAN
ID
(1
‐
4094)>
]
Deletes
all
static
ARP
entries
or
just
the
ARP
entries
that
use
a
specific
IP
interface,
port
or
vlan.
Command
mode:
Global
configuration
show
[ip]
arp
static
Displays
current
static
ARP
configuration.
Command
mode:
All
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