Creighton Bill-BCREIGH1 wrote: > > How can you ping from a DOS prompt if the destination is > crossing a repeater > with a speed mismatch? A FastEthernet-only hub won't allow > comms between > 10Mb/s devices, so if you wouldn't have any visibility to that > device, > whether from a DOS prompt, Hyperterminal, or anything... > Good point. If a station can send a packet, such as a ping, it's unlikely that there are any physical or data-link-layer problems. If it can't receive a packet, it makes sense to look above those layers. There are some unidirectional problems, but they are pretty rare. Some protocols, including STP, deal with the infamous "one-way connectivity" problem, but I bet it happens pretty rarely.
I had a new theory about what would cause his symptoms, or at least what I think his symptoms are: PC can ping router. PC can Telnet to router?? (we're not sure if he's Telnetting or not) Router can't ping PC. Router can't TFTP a file to the PC. Possible explanation: the PC is running a firewall! From my knowledge of the default behavior of many personal firewalls, this seems rather likely. There could be an access list on the router too that could cause this. Gotta run. I promise no more messages on this topic! ;-) _______________________________ Priscilla Oppenheimer www.troubleshootingnetworks.com www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56648&t=56619 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
