Re: Cisco question...

["Randall S. Benn" <rbenn () clark net>]

According to:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/f
un_r/frprt4/frtroubl.htm#16073

IP Trace Test Characters:

Char     Description
-------- ------------------
 *       The probe timed out. 
 ?       Unknown packet type. 
 A       Administratively unreachable. Usually, this output indicates that an
         access list is blocking traffic. 
 H       Host unreachable. 
 N       Network unreachable. 
 P       Protocol unreachable. 
 Q       Source quench. 
 U       Port unreachable. 


Similarly, for PING:

Char  Meaning
----- -----------------
 !    Each exclamation point indicates receipt of a reply. 
 .    Each period indicates the network server timed out while waiting for
a reply. 
 U    A destination unreachable error PDU was received. 
 C    A congestion experienced packet was received. 
 I    User interrupted test. 
 ?    Unknown packet type. 
 &    Packet lifetime exceeded. 


Regards,

Randy Benn
http://www.clark.net/pub/rbenn/cisco.html



At 03:14 AM 1/10/98 -0500, you wrote:
> What the hell is a !Q in a traceroute? 
>
> nyc6#trace www.demon.net
>
> Type escape sequence to abort.
> Tracing the route to www.demon.net (193.195.0.1)
>
>  1 nac-wisper-10Mb.nac.net (207.99.122.4) 0 msec 0 msec 4 msec
>  2 nac-wisper-10Mb.nac.net (207.99.122.4) !Q  * 
>    lth1-e1.uk-core.uk.wisper.net (193.164.160.10) [AS 6765] 92 msec
>  3 linx-1.router.demon.net (194.68.130.13) [AS 5459] 112 msec 108 msec
112 msec
>  4 telehouse-1.router.demon.net (194.159.252.51) [AS 2529] 112 msec 112
msec 104 msec
>  5 demon.www.demon.net (194.159.255.45) [AS 2529] 112 msec *  116 msec