cannot ping a PC (on a hub) from 3750 switch

[William Burgess]

I have a PC that is connected to a port on a 3com hub. The 3com hub is connected to the 3750 (layer 2) with portfast disabled. The 3750 has a management address of 10.19.19.10 and is connected to a 2500 router ethernet interface that has a primary IP(10.19.19.1) and a secondary IP address (10.19.18.1).

When connected in this config I cannot ping the PC (10.19.19.11) from the switch and I cannot ping the switch or router from the PC. I know I must be missing something simple as I have done this before.

[CSCO10892433]

Hi,

Would you please tell us what the default-gateway settings of your PC and the 3750 are? Thanks.

SSLIN

[William Burgess]

The default gateway of the PC is 10.19.19.1. I have no default on the switch.

[Hieu Cao]

Is the IP address of your pc static or dynamic from DHCP? If you connect another computer to the same or different port in the 3Com hub, can you ping the router and switch and vice versa?

If your pc is connecting directly to the 3750 switch, can you ping the switch and router from the pc and vice versa?

If you're using windows xp, try disabling the firewall and test ping again.

hieu

[William Burgess]

The PC IP is static. When directly connected to the switch I can ping the switch and the router and vice versa.

Disabling the firewall did not help.

Connecting another PC to the hub, both the same and different ports, received the same results.

[William Burgess]

This issue resolved. Problem was with the 3com hub.