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Re: Just from curiosity....

  • From: roy alcala
  • Date: Fri Jan 17 20:30:42 1997

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 -

 -------------------------------------------------------------------------
|           roy alcala            |                  MCI                  |
|         IP Development          |          2100 Reston Parkway          |
|           roy@mci.net           |        Reston, Virginia  22091        |
|    beep-roy@mci.net (pager)     |            (703) 715-7425             |
|   (800) SKY-PAGE PIN 1633689    |            (703) 715-7066 FAX         |
 -------------------------------------------------------------------------

>
>
>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  
>
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