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Re: Domain names for ISP infrastructure links
From: "Mark A. Fullmer" <maf () net ohio-state edu>
Date: Wed, 29 Jan 1997 19:25:01 -0500 (EST)

So how do we name internal links in a way that is usefull for
all operators, and conforms to the A-Z 0-9 and "-" and can
be proposed as an RFC?

Well, here's what I suggested to UUNET and Genuity, which they mostly did:

[...]

      [<iface>.]<router>.<pop>.<toplev>

where

      <iface> is something like <type><slot>[-<port>], i.e.,
              fddi0           -> f0           (no port number)
              ethernet2/3     -> e2-3         
              hssi4.21        -> h4-21        (subinterface 21)
      note that <iface> is optional since the router's loopback
      interface address (for IBGP) will just be the router's name.

      <router> is something like "CR2".
      
      <pop> is something like "DCA1".

      <toplev> is something like "alter.net".

I got tired of trying to fix this problem one interface at a time
and finally wrote a script that digests a Cisco config file and
produces both an error report and the named db files.  We use a slightly
different convention, but the script is easy to modify.

% cat clv1.oar.net | ./ifdns -foar.cfg -e

                       Reverse lookup problem report

IP Address         Current Hostname                Correct Hostname
------------------------------------------------------------------------------
131.187.68.5       csp-ccf.oar.net                 clv1-sl9-5.cle.oar.net
199.18.19.5        clv1-lo0.cleveland.oar.net      clv1-lo0.cle.oar.net
199.18.21.1        clv1-e0.oar.net                 clv1-eth0-0.cle.oar.net
...

                       Forward lookup problem report

Hostname                          Current IP Address   Correct IP Addrses
------------------------------------------------------------------------------
clv1-sl9-5.cle.oar.net            ***                  131.187.68.5
clv1-lo0.cle.oar.net              ***                  199.18.19.5
clv1-eth0-0.cle.oar.net           ***                  199.18.21.1

..

ftp://ftp.net.ohio-state.edu/users/maf/priv/ifdns and oar.cfg or osu.cfg


-- 
mark
- - - - - - - - - - - - - - - - -


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