I have got a 2950 EI running 12.1.19 EA10. It is connected via fiber to a 3550-12G running 12.2.44. The port on the 3550 is set to access mode and the 2950 has no config on it's port. The 2950 sees the 3550 via CDP but the 3550 does not see the 2950 via CDP. CDP is enabled on both and on all ports. The 2950 is also no pingable and can not ping anything itself. VLAN 1 does have an ip is no shutdown. I have wr erased and reloaded and still get the same thing. Do i need to upgrade the IOS? Even if I am directly connected to the switch I can't ping so if i need to upgrade i will probably have to Xmodem..
The strange thing is pcs connected to it work fine so I know traffic is flowing.
Thanks in advance for the assistance!