ARP flags

Oqak node.ch na centrum.cz
Pátek Září 23 03:48:01 CEST 2005


>> IP address       HW type     Flags       HW address            Mask
>> Device
>> 192.168.10.10    0x1         0x2         00:1A:A2:F4:42:18     * 
>> br0
>>
> Podle me je 0x1 ethernet, do /proc/net/arp zapisuje obsah
> net_device->type, ktery je definovan v include/linux/netdevice.h jako
>    unsigned short      type;   /* interface hardware type  */
> Zjistuje se to podle RFC1700,
> ARPHRD_NETROM   NET/ROM(tm) devices
> ARPHRD_ETHER         10 and 100Mbit/second Ethernet
> ARPHRD_EETHER   Experimental Ethernet (not used)
> ARPHRD_AX25          AX.25 level 2 interfaces
> ARPHRD_PRONET        PROnet token ring (not used)
> ARPHRD_CHAOS         ChaosNET (not used)
> ARPHRD_IEE802        802.2 networks notably token ring
> ARPHRD_ARCNET        ARCnet interfaces
> ARPHRD_DLCI          Frame Relay DLCI
> Defined by Linux:
> ARPHRD_SLIP          Serial Line IP protocol
> ARPHRD_CSLIP         SLIP with VJ header compression
> ARPHRD_SLIP6         6bit encoded SLIP
> ARPHRD_CSLIP6        6bit encoded header compressed SLIP
> ARPHRD_ADAPT         SLIP interface in adaptive mode
> ARPHRD_PPP      PPP interfaces (async and sync)
> ARPHRD_TUNNEL   IPIP tunnels
> ARPHRD_TUNNEL6  IPv6 over IP tunnels
> ARPHRD_FRAD          Frame Relay Access Device
> ARPHRD_SKIP          SKIP encryption tunnel
> ARPHRD_LOOPBACK Loopback device
> ARPHRD_LOCALTLK Localtalk apple networking device
> ARPHRD_METRICOM Metricom Radio Network
>
> Opravte me, jestli se mylim.

a ten flag? Ten se myslim meni podle toho jak dlouho je PC odpojene...
Btw a kde jsou cisla pro ty promenne?

>> A dale by me zajimalo, za jak dlouho po vypnuti PC zmizi standardne 
>> zaznam z
>> ARP tabulky routeru?
>>
> Muzete si to zmerit ;-), je to OS specific

je to linux 2.4.20 tusim, merit se mi to nechce asi je timeout v nejakem 
zdrojaku na ktery jsem myslel ze kernel hacker odkaze (nejlepe linkem, ne 
abych musel stahovat pul jadra), anebo to nekdo vi z hlavy, alespon 
priblizne dik. 




Další informace o konferenci Linux