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| Hi
Does ARP find only on Ethernet network? And does it install be default on win 2000 pro?
Thanks
Asadi | |
| relder 2003-04-13, 1:49 pm |
| ARP is broadcast based. It is installed on any OS as part of the TCP/IP protocol suite. | |
| andrey2629 2003-04-14, 12:08 am |
| Arp is used to find out the MAC address of the hosts based on the IP address.
so to find out the MAC address of the hosts,
1) ping ip address
2) go to command prompt and type arp -a: lists the arp table
Anybody here know how to resolve MAC address to IP address? | |
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| PING the IP, then ARP -a to give the ARP cache.
PING by MAC cannot be done. | |
| andrey2629 2003-04-14, 2:25 am |
| So let's say i have a switch that i know its MAC address.
To find out the IP address of the switch, no utility can be used?
Any other way? | |
| yongjian 2003-04-14, 3:22 am |
| MAC is a physical attached to the network device, whereas ip does not. you can have IP with different MACs at any time. So there is no tool to resolve MAC to IP. They are not accossiated with each other. | |
| relder 2003-04-14, 5:47 am |
| Use Reverse ARP (RARP) to resolve MAC to IP. rfc 903 | |
| GilGrabber 2003-04-17, 11:04 pm |
| To asadi:
ARP is a Layer 3 protocol in TCP/IP suite to resolve unknown MAC address for a known IP address on only Ethernet / Fast Ethernet / Gigabite Ethernet LANs. On Windows 95 system ARP cache entry will be cleared out after 4 minute time of inactivity for the given destination host by default (I have not seen any defaults listed for win98 and higher ups, so I assume they are the same).
To andrey2629:
Switch is a Layer 2 device and even though each port has its own MAC address it does not change MAC address in the frame when a frame passes through it. It operates transperantly to sending and receiving hosts.
Yes switches do have the capability to hold an IP address strictly for the purpose of remote management and manitoring. The only way to learn its IP address is if you are connected to a switche's console port, or you are at a network management server, or you are able to access manualy configured Host table file.
Hope this helps,
GG | |
| thecomeons 2003-04-18, 6:45 pm |
| and arp is only available if you install tcp/ip? | |
| relder 2003-04-18, 8:29 pm |
| Yes, part of the TCP/IP protocol suite. Its installed as the default protocol on Windows 2000. |
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