Re: [nsp] Cisco ios traceroute VS. windows tracert ?

From: micky (micky@apol.com.tw)
Date: Wed Nov 28 2001 - 20:04:45 EST

Hi Scott
    
      Thanks for providing information
      You said Cisco listening-UDP port number is 33434 for tracerouting ,but I can't scan the port with scan tools
      Is it hidden port ?

                               Micky
  ----- Original Message -----
  From: Scott Morris
  To: 'micky' ; cisco-nsp@puck.nether.net
  Sent: Wednesday, November 28, 2001 8:18 PM
  Subject: RE: [nsp] Cisco ios traceroute VS. windows tracert ?

  You have the right idea, just a little backwards!

  Cisco IOS traceroute, like unix traceroute is a UDP-based system. It sends out packets destined to a high UDP port (33434 by default).

  Microsoft tracert on the other hand functions just like a ping. It sends out ICMP echo packets incrementing the TTL in the same fashion.

  So depending on access-lists on routers between you and your destination, you may get very different results (and perhaps different paths) depending on which box you run the trace from.

  Hope that helps!

  Scott
    -----Original Message-----
    From: micky [mailto:micky@apol.com.tw]
    Sent: Wednesday, November 28, 2001 5:10 AM
    To: cisco-nsp@puck.nether.net
    Subject: [nsp] Cisco ios traceroute VS. windows tracert ?

    Hi Mr.techs

          I have a little confusing about traceroute function between cisco ios and windows utility
          Sometimes I used "tracert -d" x.x.x.x command under windows,it can go through all nodes and display ip address of all
          But using traceroute under IOS,it can goes through all and display * * *
          Somebody told me tracert is UDP-designed,traceroute is ICMP-designed
          I don't know if it's real or not ?

          Thanks
                                      Micky
            
         

This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:24 EDT