Layer 2 pinging Problem

[smavashev]

The weirderst Problem of all

2950 Switch is Connected to 3550 connected to 2801 Router

2950 Mangement IP to VLAN 1 192.168.1.103

2950 Default Gateway   192.168.1.1

PC1 = 192.168.20.2

MASK = 255.255.255.0

DEFAULT G - 192.168.20.1

PC2= 192.168.20.3

MASK = 255.255.255.0

DEFAULT G - 192.168.20.1

3550

SVI = 192.168.20.1

has IP helper-address to 2801 of 10.1.1.1

PC1 is ping all the way to 2801, PC2 I can't even ping from PC1, I'm confused because at Layer 2 on the same subnet PC1 at least should be pinging PC2, it was working fine yesterday but I can't figure it out. HELP !!!

[singhaam007]

Hi Sergei,

this is a duplicate request.

please test it and advise it its helpful

If you cannot ping the other computer from a computer on the same subnet, ensure that the other computer is connected to the network and that you have the correct IP address for the other computer. check if there is any cableing issue.

ping loopback address to see if TCP/IP working on machine

more likely its layer one issue.

check arp table.

thanks