[7117] in North American Network Operators' Group
Re: Just from curiosity....
daemon@ATHENA.MIT.EDU (roy alcala)
Fri Jan 17 18:25:45 1997
To: Brian Tackett <cym@acrux.net>
cc: nanog@merit.edu, Rob Barron <rbarron@acrux.net>
In-reply-to: Your message of "Fri, 17 Jan 1997 16:26:46 CST."
<Pine.GSO.3.93.970117162448.21258A-100000@pluto>
Date: Fri, 17 Jan 1997 18:21:36 -0500
From: "roy alcala" <roy@mci.net>
You see this behavior because your traceroute program does not
understand the ICMP "administratively prohibited" (ICMP type 3, code
13 - defined in RFC 1812) messages being sent back to it from
cpe1.reston.mci.net.
Cisco routers typically return ICMP messages of this nature to the
source of traffic which is being blocked by a traffic-filtering
ACL on the Cisco router.
- roy -
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>
>
>Anyone have any insights on what causes the following interesting data
>from a traceroute?
>
>10 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 39 ms 36 ms 38 ms
>11 * cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 36 ms *
>12 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 38 ms * *
>13 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 41 ms * *
>14 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 194 ms * *
>15 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 36 ms * *
>16 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 36 ms * 37 ms
>17 * cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 37 ms *
>18 cpe1-fddi4-0.Reston.mci.net (204.70.176.102) 37 ms * 35 ms
>
