3 Replies Latest reply on Sep 12, 2007 11:52 PM by Eric E

    Switchport mapper not discovering MACs


      I have four 3Com 7757 switches connected to a Cisco 6509 ( I know, don't say it).  When I use the switchport mapper, the device MACs on two of the switches are discovered, while the other two are not.  As a result, all I get on the latter two is port status, but no MAC address, IP address or DNS.  I have checked the configs, and they are the same, also ran a ping sweep to ensure the ARP table of my router was populated, but to no avail.  I have upgraded to 9.1 already.  Any thoughts on this?

       Thanks in advance.