Date: 19 Mar 1998 11:10:18 -0600 From: GLEN.W.MANN@monsanto.com To: freebsd-questions@FreeBSD.ORG Subject: arp/IP to ethernet addresses Message-ID: <"0319194046-arp/IP to ethernet addresses"@MHS>
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Hello!
On the network at work, we would like the ability to match ethernet
addresses (e.g., 00:a0:24:12:34:56) to IP addresses.
The output for `arp -a' is confusing. It shows more IP addresses than
there are hosts in our DNS namedb tables, but not a full listing of
all the machines on the network. What other than explicit action,
updates the arp tables? Some time ago, `arp -a' showed me many more
entries, perhaps all the machines on the network. Is there a way to
cause the translation tables to be more complete?
If I build a script to send pings (one per) to each possible IP
address on the net, the arp table is built. Is this a good idea?
The man pages say the arp stuff works with 10Mbit ethernet, though it
seems to work with 100Mbit as well. I guess the man pages are
outdated?
Thanks...
-Glen Mann
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