I have always seen the !H replies when there is not a route to the
destination and when there is an access-list blocking the router then the
reply is !A using traceroute.
-----Original Message-----
From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]]
Sent: Monday, November 20, 2000 12:57 PM
To: [EMAIL PROTECTED]
Subject: RE: !H not a complete answer
I thought the original question was in regard to traceroute results and not
ping. Look at the original question at the bottom of this page.
[EMAIL PROTECTED]
>===== Original Message From "Phillip Heller" <[EMAIL PROTECTED]> =====
>From cisco:
>
>"If the router receives a datagram which it is unable to deliver to it's
>ultimate destination because it knows of no route to the destination
>address, it replies to the originator of that datagram with an ICMP Host
>Unreachable message."
>
>An access-list denying icmp echo-requests will simply not permit the
>forwarding of icmp echo-requests. From the use of ping, this would be
>observed as timeouts rather than "Host Unreachable" or "!H".
>
>--phil
>
>| -----Original Message-----
>| From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>| Jennifer Cribbs
>| Sent: Monday, November 20, 2000 1:13 PM
>| To: [EMAIL PROTECTED]
>| Subject: RE: !H not a complete answer
>|
>|
>| This response is returned when an access list somewhere along the path
>| prevents a router from forwarding a packet to the HOST.
>|
>| and that is correct.
>|
>| Jennifer Cribbs
>| [EMAIL PROTECTED]
>|
>|
>| >===== Original Message From "Croyle, James"
>| <[EMAIL PROTECTED]> =====
>| >http://www.cisco.com/warp/public/112/chapter7.htm
>| >
>| >I think you have a routing loop as is described here. Ping from
several
>| >stations and map it out.
>| >
>| >Jim
>| >
>| >
>| >-----Original Message-----
>| >From: Miller, Nathan (AZ15)
>| >To: Richard Bosire; Jason yee
>| >Cc: John Huston; [EMAIL PROTECTED]
>| >Sent: 11/20/00 11:15 AM
>| >Subject: RE: !H
>| >
>| >Does it meas that the destination NETWORK is unreachable or the
>| >destination
>| >HOST??
>| >
>| >-----Original Message-----
>| >From: Richard Bosire [mailto:[EMAIL PROTECTED]]
>| >Sent: Monday, November 20, 2000 8:01 AM
>| >To: Jason yee
>| >Cc: John Huston; [EMAIL PROTECTED]
>| >Subject: Re: !H
>| >
>| >
>| >destination unreachable i.e not path to the destination network
>| >
>| >Jason yee wrote:
>| >
>| >> hi anyone knows what does the symbol !H means in
>| >> traceroute results
>| >>
>| >> __________________________________________________
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>| >--
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>| >
>| >Richard Bosire
>| >Network Engineer CCNA,CCSE
>| >AfricaOnline (k) Ltd
>| >tel +254-2-243775 fax +254-2-243762
>| >http://www.africaonline.co.ke
>| >
>| >
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