If the issue is true for all routers and switches then extended trace isn't the solution. I believe that Microsoft implements tracert differently from the standard which Cisco uses. Next guess is that you have a firewall that is blocking the traffic. Here's some snips from old GroupStudy posts:
"Unix and Cisco send UDP packets, but Microsoft actually sends 3 ICMP echo requests. Using traceroute on different platforms may yield different results. Especially when you have firewall rulesets involved." "Here's a description of how it works in Unix. Traceroute sends out a UDP packet addressed to the target machine, port 33434, with a "TTL" field set to 1. The first hop accepts the packet, decrements the "TTL" field (as required by the IP spec), and sees that the resulting TTL is 0. It then sends an ICMP Time Exceeded message to the original host. This is repeated twice, and the host records the elapsed time between sending the packet and receiving the "Time Exceeded" packet. It reports this for each of the three packets. Then, the host increments the port number (33434 + 1 = 33435) and the TTL field (1 + 1 = 2), and sends another packet to the same target machine. This time, the packet will get to the second hop before the TTL field becomes a 0. So now the second hop will send ICMP Time Exceeded messages to the host. This is repeated over and over until an ICMP Port Unreachable message is received. This is how the host knows it's reached the destination. This is also why it uses UDP port 33434 and up, because it's pretty safe to assume that no service will be running on any of those ports." > -----Original Message----- > From: Paul [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, July 03, 2002 2:00 PM > To: Daniel Cotts > Subject: Re: Specify DNS on a Router ... [7:48009] > > > Cheers Daniel ... > > I was using 'traceroute aaa.bbb.ccc.ddd' > > Does traceroute perform differently to trace ???? > > I am experiencing this problem from all routers and switches > !!! but all > workstations and servers perform a tracert without any problems !!! > > I will try the extended trace tomorrow in work ... > > Thanks again ... > > Paul ... > ----- Original Message ----- > From: "Daniel Cotts" > To: > Sent: Wednesday, July 03, 2002 6:11 PM > Subject: RE: Specify DNS on a Router ... [7:48009] > > > > I'm assuming that your trace problem is from your router. > > Standard trace would be: > > router#trace aaa.bbb.ccc.ddd > > > > Just in case it's choking on your external ip address -- > > Try an extended trace: > > > > router#trace > > Protocol [ip]: > > Target IP address: aaa.bbb.ccc.ddd > > Source address: xxx.yyy.zzz.111 (one of your internal interfaces) > > Numeric display [n]: > > Timeout in seconds [3]: > > Probe count [3]: > > Minimum Time to Live [1]: > > Maximum Time to Live [30]: > > Port Number [33434]: > > Loose, Strict, Record, Timestamp, Verbose[none]: > > Type escape sequence to abort. > > Tracing the route to aaa.bbb.ccc.ddd > > > > > -----Original Message----- > > > From: Paul [mailto:[EMAIL PROTECTED]] > > > Sent: Wednesday, July 03, 2002 10:46 AM > > > To: [EMAIL PROTECTED] > > > Subject: Re: Specify DNS on a Router ... [7:48009] > > > > > > > > > Doh !!!! Cheers Tim ... > > > > > > The underlying problem that I have is that within my LAN > > > at work .. I > > > can ping externally using DNS and IP fine .. However, If I > > > try to traceroute it does not work !!! All I get is the > > > timeout asterisks .... but I can successfully traceroute from > > > workstations, > > > servers and even Novell boxes !!!! > > > > > > Do anyone have any ideas ??? > > > > > > Regards .. > > > > > > Paul .. > > > ----- Original Message ----- > > > From: "Bob Timmons" > > > To: > > > Sent: Wednesday, July 03, 2002 4:22 PM > > > Subject: Re: Specify DNS on a Router ... [7:48009] > > > > > > > > > > ip name-server x.x.x.x > > > > > > > > > Hi all ... > > > > > > > > > > Quick easy question to you all ... can and how do you > > > specify what > > > DNS > > > > > server to use on a router ??? > > > > > > > > > > Regards > > > > > > > > > > Paul ... > [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=48037&t=48009 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
