show arp

Displays the Address Resolution Protocol (ARP) entries.

Syntax

show arp { ethernet slot / port | ve ve-id } [ vrf name ]
show arp ip ip-address [ vrf name ]
show arp [ dynamic | static ] [ summary ] [ vrf name ]

Parameters

ethernet
Specifies a physical Ethernet interface.
slot
Specifies a valid slot number. For devices that do not support line cards, specify 0.
port
Specifies a valid port number.
ve ve-id
Specifies a virtual Ethernet (VE) interface.
vrf name
Specifies the name of the VRF instance. If this option is not used, details for the default VRF are shown in the output.
ip ip-address
Specifies a next-hop IP address.
dynamic
Displays all the dynamic ARP entries in the ARP table.
static
Displays all the static ARP entries in the ARP table.
summary
Displays a summary of the ARP table.

Modes

Privileged EXEC mode

Output

The show arp command displays the following information:

Output field Description
Address Displays the IP address.
Mac-address Displays the MAC address or "UnResolved".
L3 Interface Displays the physical or VE interface.
L2 Interface Displays the Layer 2 interface. Supported values:
  • (Physical interface): "Eth slot / port"
  • (Port-channel): "Po"
  • (VxLAN): "Tu"
  • "PW": VPLS Pseudo-wire
  • "UnResolved"
Age In hh:mm:ss format, displays the time since the most recent renewal of a dynamic entry. For a static entry, displays "Never".
Type Displays the ARP type. Supported values:
  • Dynamic
  • Static
  • MCT/EVPN: MCT peer ARPS or entries learned through the BGP-EVPN control plane
  • MCT/EVPN Sticky: MCT peer ARPs or entries learned through the BGP-EVPN control plane—with the "sticky" attribute (static or MY-IP at the originator).
  • LeakArp: An ARP entry leaked from another VRF.
  • PreArp: ARP triggered by other than the data traffic, for example, by the static route.

Examples

The following example displays the output of the basic show arp command. 

device# show arp
Entries in VRF default-vrf : 24
Address    Mac-address     L3 Interface  L2 Interface        Age      Type
------------------------------------------------------------------------------
1.4.67.4   609c.9fde.0f15  Ve 1467       Tu 61441 (4.4.4.4)  00:00:00 LeakArp
1.5.67.5   609c.9fde.1215  Ve 1567       Tu 61442 (5.5.5.5)  Never    Bgp-Sticky
2.7.0.2    609c.9fde.0015  Ve 2703       Po 27               00:14:45 Dynamic
3.7.0.2    609c.9fde.0d1c  Eth 0/2       Eth 0/2             00:04:12 Dynamic
6.7.6.6    609c.9fde.0b15  Ve 4090       Eth 0/31            00:01:43 Dynamic
37.1.1.3   609c.9fde.0d15  Ve 37         PW (3.3.3.3)        00:19:26 Dynamic
37.1.1.10  0010.9400.0002  Ve 37         Eth 0/42.37         00:08:00 Dynamic
37.1.1.100 0000.0001.0002  Ve 37         UnResolved          Never    Static
37.1.1.101 UnResolved      Ve 37         UnResolved          00:00:00 PreArp

The following example displays the output of the show arp summary option. 

device# show arp summary
Static Entries        		 : 1
Dynamic Entries      		  : 6
Leaked Entries        		 : 2
Pre-arp Entries       		 : 1
Remote (MCT/EVPN) Entries	     : 0
Remote (MCT/EVPN) Sticky Entries    : 14
Total Entries         		 : 24
9036689-01 Rev AA