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[FAQ]What Does Incomplete Mean in an ARP Entry?

Created: Dec 29, 2015 01:58:00Latest reply: Apr 24, 2020 21:10:26 2415 3 0 0

If the value of MAC ADDRESS in an ARP entry is Incomplete, this ARP entry is a temporary one. When IP packets trigger ARP Miss messages, the device generates temporary ARP entries and sends ARP Request packets to the destination network segment.

When a temporary ARP entry is not aged out:
- Before receiving an ARP Reply packet, the device discards the IP packets matching the temporary ARP entry, and no ARP Miss message is triggered.
- After receiving the ARP Reply packet, the device generates a correct ARP entry to replace the temporary entry.
After the temporary ARP entry ages out, the device deletes this entry.

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who_knows Created Dec 29, 2015 02:05:13

Use display arp to check the whole arp table.

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albertsilva

Created Apr 24, 2020 21:10:18

very useful, thanks!!

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albertsilva

Created Apr 24, 2020 21:10:26

Good post

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[FAQ]What Does Incomplete Mean in an ARP Entry?

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