Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!ucbvax!PAN.SSEC.HONEYWELL.COM!thompson
From: thompson@PAN.SSEC.HONEYWELL.COM (John Thompson)
Newsgroups: comp.sys.apollo
Subject: re: TCP Hostname Resolving - 10.2/BSD
Message-ID: <9011011949.AA13298@pan.ssec.honeywell.com>
Date: 1 Nov 90 19:49:27 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 41


> I've got a 10.2 machine with bsd and aegis combo on it, and I'm having
> a bizarre problem with resolving hostnames from /etc/hosts
> 
> There's a network host that's number is 126.0.0.1, and its name is 'gateway1'.
> If I type:
> 
>      % rlogin gateway1
> It tries and times out, no connection.
> 
> If I type:
> 
>     % rlogin 126.0.0.1
> It immediately connects.
1) Check the /etc/hosts file for gateway1 (fpat or grep).  The first entry
   is the address that the name will resolve to.  You might have more than one.
2) The /etc/hosts.dir and /etc/hosts.pag files may be out-of-date / corrupt.
   If they exist, they're used for quick, hashed-entry access to addresses.
   I'm not sure whether they access the /etc/hosts or not.
3) If you're using name-server resolution (/etc/nmconfig -hostent_bind)
   the name-server may be what you can't access.  Check for a file /etc/resolv.conf
   file on your node, and/or /etc/named running.  From there, figure out what
   machine you're using for name-service (if you are using any).

> If I try to access a node that requires a few gateway hops, I always get the
> 'network unreachable', although routed is running, etc.
Check your routing tables with '/usr/ucb/netstat -r' or '/com/tcpstat -r'.  Just
because routed is running doesn't mean that routes are there.  Also check out
your tcp address (probably '/etc/ifconfig dr0' if you're on token ring) and
subnet masking (if any).  


Good Luck --

John Thompson (jt)
Honeywell, SSEC
Plymouth, MN  55441
thompson@pan.ssec.honeywell.com

As ever, my opinions do not necessarily agree with Honeywell's or reality's.
(Honeywell's do not necessarily agree with mine or reality's, either)