ARP

The Address Resolution Protocol (ARP) allows a host to find the physical address of a target host on the same physical network using only the target's IP address. ARP is a low-level protocol that hides the underlying network physical addressing and permits assignment of an arbitrary IP address to every machine. ARP is considered part of the physical network system and not as part of the Internet protocols.

Configuring ARP - Gaia Portal

To show dynamic ARP entries:

Step	Description
1	In the navigation tree, click Network Management > ARP.
2	In the upper right corner, click the Monitoring tab.

To show static ARP entries:

Step	Description
1	In the navigation tree, click Network Management > ARP.
2	In the upper right corner, click the Configuration tab.

To change static and dynamic ARP parameters:

Step

Description

In the navigation tree, click Network Management > ARP.

In the upper right corner, click the Configuration tab.

In the ARP Table Settings section:

Enter the Maximum Entries. This is the maximal number of entries in the ARP cache.
Range: 1024 - 16384 entries

Default: 4096 entries

Note - Make sure to configure a value large enough to accommodate at least 100 dynamic entries, in addition to the maximum number of static entries.
Enter the Validity Timeout. This is the time, in seconds, to keep resolved dynamic ARP entries. If the entry is not referred to and is not used by traffic before the time elapses, it is deleted. Otherwise, a request will be sent to verify the MAC address.
Range: 60 - 86400 seconds (24 hours)

Default: 60 seconds

To add a static ARP entry:

Step	Description
1	In the navigation tree, click Network Management > ARP.
2	In the upper right corner, click the Configuration tab.
3	In the Static ARP Entries section, click Add.
4	Enter the IP Address of the static ARP entry and the MAC Address used when forwarding packets to the IP address.
5	Click OK.

To delete a static ARP entry:

Step	Description
1	In the navigation tree, click Network Management > ARP.
2	In the upper right corner, click the Configuration tab.
3	In the Static ARP Entries section, select a Static ARP entry.
4	Click Remove.

To flush all dynamic ARP entries:

Step	Description
1	In the navigation tree, click Network Management > ARP.
2	In the upper right corner, click the Monitoring tab.
3	Click Flush All.

Configuring ARP - Gaia Clish

Description

Configure the Address Resolution Protocol (ARP).

Syntax

To add a static ARP entry:

add arp static ipv4-address <IPv4 Address> macaddress <MAC Address>
To delete static and dynamic ARP entries:

delete arp

dynamic all

static ipv4-address <IPv4 Address>
To configure ARP table parameters:

set arp table

validity-timeout <Seconds>

cache-size <Number of Entries>
To show ARP table parameters:

show arp

dynamic all

static all

table validity-timeout

table cache-size

Important - After you add, configure, or delete features, run the save config command to save the settings permanently.

Parameters

Parameter	Description
`static`	Configures static ARP entries.
`dynamic`	Configures dynamic ARP entries.
`ipv4-address <`IPv4 Address`>`	Configures IPv4 Address for a static ARP entry. Range: Dotted-quad ([0-255].[0-255].[0-255].[0-255]) Default: No default value
`macaddress`	Configures the hardware MAC address (six hexadecimal octets separated by colons) for a static ARP entry. Range: 00:00:00:00:00:00 - FF:FF:FF:FF:FF:FF Default: No default value
`table validity-timeout <`Seconds`>`	Configures the time, in seconds, to keep resolved dynamic ARP entries in the ARP cache table. If the entry is not referred to and is not used by traffic before this time elapses, the dynamic ARP entry is deleted from the ARP cache table. Otherwise, an ARP Request will be sent to verify the MAC address. Range: 60 - 86400 seconds (24 hours) Default: 60 seconds
`table cache-size <`Number of Entries`>`	Configures the maximal number of entries in the ARP cache table. Range: 1024 - 16384 Default: 4096 Note - Make sure to configure a value large enough to accommodate at least 100 dynamic ARP entries, in addition to the maximum number of static ARP entries.