`show arp`

Displays the Address Resolution Protocol (ARP) table.

Syntax

Parameters

ip-addr

Specifies an IP address.

ip-mask: Specifies the IPv4 mask.

detail

Specifies detailed information.

decimal

Specifies the number of entries to skip.

dynamic

Specifies dynamic ARPs.

ethernet unit/slot/port

Specifies an Ethernet interface.

inspect

Specifies ARP entry inspection.

lag lag-id

Specifies a LAG interface.

mac-address mac-address [ mac-address ]

Limits the output to the ARP entry that contains the specified MAC address.

management port-number

Specifies a management port.

pending

Specifies pending ARPs.

resource

Specifies resource information.

static

Specifies static ARPs.

statistics

Specifies ARP statistics.

summary

Specifies summarized information.

ve ve-number

Specifies a Virtual Ethernet (VE) interface.

vrf vrf-name

Specifies ARP entries belonging to a given VRF instance.

Modes

User EXEC mode

Usage Guidelines

The decimal, detail, static, statistics, and ve parameters are not supported for Layer 2 switches.

The ve option is not available for member units. The ve option is only supported for Layer 3 routers.

You may enter a second MAC address without re-entering the mac-address keyword to display information for two ARP entries.

The show arp command displays the following information:

Output field	Description
IP Address	The IP address of the entry.
MAC Address	The MAC address of the entry.
Type	ARP entry type. The options are : Static: The Layer 3 switch loaded the entry from the static ARP table when the device for the entry was connected to the Layer 3 switch. Dynamic: The Layer 3 switch learned the entry from an incoming packet. DHCP: The Layer 3 Switch learned the entry from the DHCP binding address table. In this case, the port number is not available until the entry gets resolved through ARP.
Age	The number of minutes since the ARP entry was refreshed. If this value reaches the defined ARP aging period, the entry is removed from the table. Static entries do not age out.
Port	Port associated with the ARP entry.
Status	Status of the ARP entry, either valid or pending.
ARP entries per interface	The number of ARP entries for each interface.
Dynamic	The number of dynamic ARP entries.
Pending	The number of pending ARP entries.
Interface	The type and number of a specific interface.
Pending count	The number of pending ARP entries.
Dynamic count	The number of dynamic ARP entries.
Static count	The number of static ARP entries.

Examples

The following example displays the ARP table.

device> show arp

Total number of ARP entries: 3
Entries in default routing instance:
No.   IP Address       MAC Address    Type     Age Port               Status
1     10.176.150.129   02e0.52cb.55c8 Dynamic  0    mgmt1             Valid
2     10.1.1.2         903a.7205.07c0 Dynamic  1    1/1/5             Valid
3     10.1.1.3         000a.000b.000c Static   0    1/1/5             Valid

The following example displays detailed ARP information.

device> show arp detail

Total number of ARP entries: 3
Entries in default routing instance:
No.   IP Address       MAC Address    Type     Age Port        VLAN       Status
1     10.176.150.129   02e0.52cb.55c8 Dynamic  0    mgmt1      1          Valid
2     10.1.1.2         903a.7205.07c0 Dynamic  1    1/1/5      100        Valid
3     10.1.1.3         000a.000b.000c Static   0    1/1/5      100        Valid

The following example shows ARP resource information.

device> show arp resource  
                                                                          
4 ARPs in table, maximum #: 61000

The following example shows summarized ARP information.

device> show arp summary

Printing summary for default vrf:
Pending count   : 0
Dynamic count   : 2
Static count    : 2

The following example shows summarized ARP information for a VE interface for a Layer 3 router.

device> show arp ve 10 summary
	
Interface    : ve 10
Dynamic ARP    : 7
Pending ARP    : 3

The following example shows ARP statistics.

device> show arp statistics

 ARP packets Tx/Rx in the last few sec:
                     ARP  REQ             ARP REP
                   TX        RX        TX        RX
5     sec :        3         20        5         0
30    sec :        9         122       30        0
60    sec :        18        245       61        0
300   sec :        112       1225      302       8

The following example shows dynamic ARP information.

device> show arp dynamic

No.   IP Address       MAC Address    Type     Age Port               Status
1     10.177.114.129   02e0.5297.56a0 Dynamic  0    mgmt1             Valid
2     10.177.114.130   cc4e.2445.1e00 Dynamic  2    mgmt1             Valid
3     10.177.114.131   cc4e.2445.0400 Dynamic  0    mgmt1             Valid
4     30.30.30.1       903a.7205.3b18 Dynamic  2    1/1/3             Valid
5     30.30.31.1       903a.7205.3b18 Dynamic  2    1/1/3             Valid

The following example shows pending ARP information.

device> show arp pending

Number of pending entries 1
No.   IP Address       MAC Address    Type        Age   Port               Status
1      10.1.1.52       None           Dynamic     0      v10               Pend

The following example shows static ARP information.

device> show arp static

No.   IP Address       MAC Address    Type     Age Port               Status
1     10.1.1.50        000a.000b.000c Static   0    1/1/1             Valid
2     10.1.1.51        000a.000c.000d Static   0    1/1/1             Valid

History

Release version	Command history
08.0.95	The decimal, detail, dynamic, pending, static, statistics, summary, and ve options were added.

Show Commands

show arp

`show arp`