Re: Dumb question: ping w/o icmp support?

Paul Fuqua (killer!pollux!ti-csl!
21 Oct 88 17:36:41 GMT

    Date: Thursday, October 20, 1988 6:28am (CDT)
    From: geoff at eagle_snax.UUCP ( R.H. coast near the top)
    Subject: Re: Dumb question: ping w/o icmp support?
    Newsgroups: comp.protocols.tcp-ip

    In article <In article <527@mks.UUCP: (Eric Gisin) writes:
    :In article <:In article <440@gonzo.UUCP:, :In article <440@gonzo.UUCP:, daveb@gonzo.UUCP (Dave Brower) writes:
    :: A number of the machines I use support only the tcp and udp protocols.

    You mean they're in violation of the RFC's? :-( ICMP is an integral
    part of IP, and it's got to be in there. Presumably you mean there's
    no user-accessible interface to ICMP services.

We have a VMS machine running a locally-hacked version of the CMU TCP/IP
package, and it doesn't respond to ICMP echoes, although it does FTP
just fine (albeit slowly). Violation or not, it's all we have and
better than Decnet (for our purposes).

    :: I'd really like to be able to ping from them. Is there any hope, short
    :: of harrassing the vendors?

There are also UDP and TCP echoes, you might try them.


Paul Fuqua
Texas Instruments Computer Science Center, Dallas, Texas
CSNet: (ARPA too, sometimes)
UUCP: {smu, texsun,, im4u, rice}!ti-csl!pf

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