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New Member

arp cache

is this basically where the router/switch memorizes what mac address goes out of which port !!

cheers

Carl

2 REPLIES
Cisco Employee

Re: arp cache

The CAM table is used to associate the MAC address to the physical port. The ARP table is used for the MAC to IP address association.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México 
Paseo de la Reforma 222 Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

Re: arp cache

Carl,

the ARP table stores dynamically all IP/MAC address pairs with which the router/switch is in an IP conversation. The IP/MAC address pairs mostly belong to other systems that are in common LAN/VLAN with the router/switch. The router/switch also keeps its own MAC address per LAN/VLAN interface in the ARP table (the one with '-' under age).

HTH

Mat

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