This is where I am getting my info..
Ref: chapter 8 of Intro to Cisco Router Configuration
pages 229-230
It says responses to trace command include:
!H The probe was rceived by the router, but not forwarded, usually due to an
access list.
P The protocol was unreachable
N The network was unreachable
U The port was unreachable
* Timout
Jennifer Cribbs
[EMAIL PROTECTED]
>===== Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]>
=====
>Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that
>the character A signifies that the destination is "Administratively
>Unreachable. Usually, this output indicates that an access list is blocking
>traffic."
>
>-----Original Message-----
>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]]
>Sent: Monday, November 20, 2000 1:13 PM
>To: cisco; [EMAIL PROTECTED]
>Subject: RE: !H !H !H!H
>
>
>On the traceroute command:
>
>!H is returned 3 times if an access list prevents a router from forwarding
>the
>packet to the HOST. The 'trace' command is used to determine the route
>taken
>to a remote host. All the hops are shown as the trace probe moves toward
>the
>destination. Three probes are issued. The response time of each probe will
>
>be displayed if successful.
>
>The trace command returns a N if the network is unreachable.
>The P is the response if the protocol is unreachable.
>An * is a timeout.
>!H is the return for what I said above but it is regarding a traceroute
>command,
>and not a ping.
>
>Jennifer Cribbs
>[EMAIL PROTECTED]
>
>
>
>>===== Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]>
>=====
>>I thought !A meant this path is blocked by an access list.
>>
>>-----Original Message-----
>>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]]
>>Sent: Monday, November 20, 2000 12:13 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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