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- Path: sparky!uunet!elroy.jpl.nasa.gov!usc!news.service.uci.edu!unogate!mvb.saic.com!tgv.com!info-multinet
- Date: 20 NOV 92 21:05:03 GMT
- Newsgroups: vmsnet.networks.tcp-ip.multinet
- X-Return-path: <info-multinet-relay@TGV.COM>
- X-RFC822-From: adelman (Kenneth Adelman) @ TGV.COM
- From: adelman@TGV.COM
- Subject: Re: TCPDUMP and the ETHERS file.
- Organization: The INFO-MULTINET Community
- Message-ID: <36A00FB320NOV92210503@TGV.COM>
- Nntp-Posting-Host: Mvb.Saic.Com
- Lines: 46
-
- > I've been doing some debugging using TCPDUMP. From the Multinet help
- > library I get this:
-
- > ether dst ehost
- > True if the ethernet destination address is ehost. Ehost may be
- > either a name from MULTINET:TCPDUMP.ETHERS or a number.
- > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^
-
- > Now. My ethers file looks like this:
-
- > #
- > # This file maps between ethernet addresses and host names for
- > # the tcpdump utility
- > #
- > 09:00:2B:00:00:0F LAT-servers
- > 09:00:2B:01:00:01 DEC-bridges
- > 09:00:2B:02:00:00 DECnet-L2-Rtrs
- > AB:00:00:01:00:00 DECnet-Dump/Load
- > AB:00:00:02:00:00 Remote-Console
- > AB:00:00:03:00:00 DECnet-Routers
- > AB:00:00:04:00:00 DECnet-End-Nodes
- > AB:00:03:00:00:00 LAT-multicast
- > CF:00:00:00:00:00 loopback
- > FF:FF:FF:FF:FF:FF broadcast
- > 00:00:89:01:A1:AC Cecil
-
- > My question is, why can't I use the name "Cecil" in the TCPDUMP command?
-
- > $ mu tcpdump/snap=1500 ether host cecil
- > tcpdump: unknown ether host 'cecil'
- > $
-
- > But, when I enter the Ethernet address for Cecil, I get:
-
- > $ mu tcpdump/snap=1500 ether host 00:00:89:01:a1:ac
- > 13:57:04.27 Cecil 9:0:7:ff:ff:ff 0022 26:
- > 001a 0000 0000 0002 ff5d 0101 0100 0208 .........]......
- > 5d00 0280 0002 8200 0900 ].........
-
- > It obediently translates Cecil's Ethernet address into the name Cecil when
- > it displays the packets. Anybody know what's going on?
-
- The name is case-sensitive. Put it in lower case.
-
- Ken
-