ARP

From dankwiki
Revision as of 05:13, 19 July 2011 by Dank (talk | contribs) (Created page with '==Linux ARP states== {|class="wikitable" border="1" !state !meaning !transitions |- |'''permanent''' |never undergoes verification or expiry |none (manually configured) |- |'''no…')
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Linux ARP states

state meaning transitions
permanent never undergoes verification or expiry none (manually configured)
noarp normal expiration, never verified use resets use counter
reachable normal expiration use resets timer
stale still usable, needs verification use resets timer and returns to reachable

timer changes state to delay

delay schedule ARP request, needs verification use resets timer and returns to reachable

timer changes state to probe, issuing ARP request

probe need ARP reply for verification use resets timer and returns to reachable

timer reissues ARP requests or moves to failed

incomplete (new entry) need ARP reply for first use use resets timer and returns to reachable

timer reissues ARP requests or moves to failed

failed no response received timer governs reissuing of ARP requests

use resets timer and moves to reachable

See Also