show iparp

show iparp {ip_addr | mac | [ {vlan} vlan_name | vlan vlan_list] | permanent} {port port {vr vr_name}

Description

Displays the IP Address Resolution Protocol (ARP) table. You can filter the display by IP address, MAC address, VLAN, or permanent entries.

Syntax Description

ip_addr Specifies an IP address.
mac Specifies a MAC address.
vlan_name Specifies a VLAN name.
vlan_list Specifies a VLAN list of IDs.
permanent Specifies permanent entries.
port Show entries for a specific port.
port Show only entries for this port number.
vr_name Specifies a VR or VRF.

Default

Show all entries, except for proxy entries.

Usage Guidelines

Displays the IP ARP table, including:
  • IP address
  • MAC address
  • Aging timer value
  • VLAN name, VLAN ID and port number
  • Flags

If you do not specify a VR or VRF, the command applies to the current VR context.

The show output displays the following information:

ARP address check Whether IP ARP checking is enabled or disabled. IP ARP checking verifies if the ARP request‘s source address is in the receiving interface‘s subnet.
ARP refresh Whether ARP refresh is enabled or disabled. ARP refresh is performed when an ARP entry‘s age is three-fourths of the timeout value.
Distributed mode Displays the configured and current states for the distributed IP ARP feature, which applies only to BlackDiamond 8800 series switches. The Configured field shows the feature state that will apply the next time the switch is restarted. The Current state shows the current state that was applied the last time the switch was restarted.
Dup IP Addr IP addresses that have been used by other hosts on the network.
Dynamic entries The number of dynamic (learned ARP) entries in the table.
Failed requests The number of failed ARP requests sent (by this VR or VRF).
In Request The number of ARP request packets received (by this VR or VRF).
In Response The number of ARP reply packets received (by this VR or VRF).
Max ARP entries Maximum ARP table size for the VR or VRF (each VR has its own ARP table).
Max ARP pending entries Maximum number of incomplete (pending) ARP entries allowed in the table.
Out Request The number of ARP request packets sent (by this VR or VRF).
Out Response The number of ARP reply packets sent (by this VR or VRF).
Pending entries The number of sent ARP requests that have not yet received a response.
Proxy Answered The number of ARP requests answered by the ARP proxy.
RX Error The number of incorrect ARP request and reply packets received. The malformed packets include the following errors: incorrect ARP op code, hardware address type is not Ethernet, the protocol address is not IP, and similar errors.
Static entries The number of configured (static ARP) entries in the table.
Rejected Count The number of rejected ARP request packets.
Rejected I/F The VLAN on which the last rejected ARP request packet arrived.
Rejected IP The source address for the last rejected ARP request. An example reason for an ARP request packet to be rejected is if the source address of the packet is not in the subnet.
Rejected Port The port on which the last rejected ARP request packet arrived.
Timeout Timeout value for a dynamic (learned) ARP entry.

Example

The following example displays the IP ARP table for the current VR or VRF context:

# show iparp
VR            Destination      Mac                Age  Static  VLAN          VID  Port
VR-Default    10.10.10.6       00:04:96:1f:a5:71    8      NO  bluered       4092  1
VR-Default    10.128.32.1      00:01:30:ba:6a:a0    0      NO  Default       4095
VR-Default    10.128.32.2      00:01:03:1c:ae:b0    5      NO  Default       4095
VR-Default    10.128.32.4      00:d0:59:17:74:83    3      NO  Default       4095
VR-Default    10.128.32.5      00:02:a5:c2:5c:dd    0      NO  Default       4095
VR-Default    10.128.32.6      00:12:3f:1c:f8:fb    5      NO  Default       4095
VR-Default    10.128.32.7      00:11:11:80:9c:b9    7      NO  Default       4095
VR-Default    10.128.32.8      00:11:43:53:8e:f1    0      NO  Default       4095
VR-Default    10.128.32.9      00:02:a5:bf:ac:70    7      NO  Default       4095
VR-Default    10.128.32.10     00:11:43:44:18:68   10      NO  Default       4095
VR-Default    10.128.32.11     00:12:3f:1c:e9:f2    0      NO  Default       4095
VR-Default    10.128.32.12     00:02:a5:bf:af:79    8      NO  Default       4095
VR-Default    10.128.32.13     00:11:43:40:89:91    0      NO  Default       4095
VR-Default    10.128.32.16     00:0f:1f:c9:2d:80    2      NO  Default       4095
VR-Default    10.128.32.17     00:06:5b:b1:6a:91    1      NO  Default       4095
VR-Default    10.128.32.19     00:11:43:3a:96:1d   10      NO  Default       4095
VR-Default    10.128.32.20     00:08:02:d5:c5:b7    6      NO  Default       4095
VR-Default    10.128.32.24     00:12:3f:0a:44:92   14      NO  Default       4095
VR-Default    10.128.32.26     00:50:04:ad:36:5e    6      NO  Default       4095
VR-Default    10.128.32.30     00:b0:d0:23:f2:9a   11      NO  Default       4095
VR-Default    10.128.32.54     00:b0:d0:59:e4:e2    6      NO  Default       4095
VR-Default    10.128.32.55     00:a0:c9:0c:41:de    3      NO  Default       4095
VR-Default    10.128.32.59     00:b0:d0:7c:d6:07   14      NO  Default       4095
VR-Default    10.128.32.99     00:04:96:05:00:03   13      NO  Default       4095
VR-Default    10.128.32.101    00:04:96:1f:a8:48    0      NO  Default       4095
VR-Default    10.128.32.104    00:30:48:41:ed:45    0      NO  Default       4095
VR-Default    10.128.32.105    00:30:48:41:ed:97    0      NO  Default       4095
VR-Default    10.128.32.106    00:01:30:23:c1:00    0      NO  Default       4095
VR-Default    10.128.32.108    00:04:96:1f:a5:71    0      NO  Default       4095
VR-Default    10.128.32.116    00:04:96:1f:a4:0e    0      NO  Default       4095
Dynamic Entries  :           1             Static Entries            :          0
Pending Entries  :           0
In Request       :         111             In Response               :          3
Out Request      :         110             Out Response              :        111
Failed Requests  :           0
Proxy Answered   :           0
Rx Error         :           0             Dup IP Addr               :         0.0.0.0
Rejected Count   :                         Rejected IP               :
Rejected Port    :                         Rejected I/F              :
Max ARP entries  :        4096             Max ARP pending entries   :        256
ARP address check:    Enabled              ARP refresh               :    Enabled
Timeout          :    Configured:  10 minutes    Current:  30 minutes
Distributed mode :    Configured:  On            Current:  Off
Max ARP entries  :    Configured:  259000 (Distributed mode was turned "on" after boot)
ARP Sender-Mac Learning   :   Disabled

History

This command was first available in ExtremeXOS 10.1.

The vr option was added in ExtremeXOS 11.0.

For BlackDiamond 8800 series switches only, additional display information was added to show the configured and current state of the distributed IP ARP feature in ExtremeXOS 12.5.

The vlan_list variable was added in ExtremeXOS 16.1.

Platform Availability

This command is available on all platforms.