What is doing the pinging and what is being pinged? In addition to the 
great advice from Michael, which has you check to see when the switch 
learns a MAC address, keep in mind that the pinger needs to get a MAC 
address too. Assuming it's on the same subnet as the device that it is 
pinging, it will ARP for the device. That can take a little while. If the 
pinger is a PC, you can check its ARP table with arp -a from an MS-DOS
prompt.

If the devices are in different subnets, then the pinger would ARP for its 
default gateway.

Just a couple other things to keep in mind, not a definite answer.

Priscilla

At 10:58 AM 10/30/01, Michael Williams wrote:
>I'm in the boat with Paul, as my kneejerk reaction was "enable portfast".
>However, if you've done that, then you can start to analyse the problem from
>ground up (or Layer 1 up =) .  Since you *can* ping this thing eventually, I
>think we could safely rule out a physical wiring problem or the like.  So
>next, I would console (or telnet) into the switch and watch the that
>specific port (in the 1900 series it's under the Port Addressing menu).
>Then, plug the PC in and keep watching the port addressing for that port and
>see how long/when the switch learns the MAC for the PC.  If it learns the
>MAC instantly (which it should), then I don't see where the switch is
>causing the problem. As long as switch sees the MAC addr.  Also, assuming
>your switch and the PC are in the same IP subnet, I would try pinging the PC
>from the switch directly instead of from another PC.
>
>Hope this helps some.... let me know how it goes...... interesting problem.
>
>Mike W.
________________________

Priscilla Oppenheimer
http://www.priscilla.com




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