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Re: proxy_arp / pppoe-server / arp cache persistence problem

Wojciech Ziniewicz escreveu:
2008/1/29, Wojciech Ziniewicz <wojciech.ziniewicz@gmail.com>:
I have pppoe server with about 200-500 clients online - all of them
have public IP adresses and I use a "proxyarp" option in my pppoe
server what means the same as proxy_arp in /proc/sys/net but only for
my pppX interfaces (not for eth0, eth1 etc )


hey - i've found a nice arp setting : net.ipv4.neigh.eth0.base_reachable_time

from man 7 arp :

" Once  a  neighbor  has  been  found,  the  entry  is  considered  to
 be valid for at least a random value (...)  Defaults to 30 seconds."

My next questions :

- can I adjust it to be "0" - will it mean "infinite" ?

- why there's so short default time of re-sending the arp cache
refresh for and ip address ?


This time is so short to avoid conflicts between the network hosts` arp entries and a new host that joins to network.

If this time becomes longer, when we add an new host on the network it`ll be unreachable.

Rodolfo Barbosa
Lunar Consultoria

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