cannot ping between hosts on a switch (strange)

martell1000

hi everyone,

today i dusted off my homelab because i wanted to lab a little.
to put some load on the thing i decided to use one of my netbooks as an ftp server, but i coudnt get a connection
from my PC which is connected via my netgear router to the switchrack.

i then pinged the pc from the netbook an everything goes fine.
i even can access the internet from the netbook attached to the switchrack.

i then connected another pc to the same switch an they cannot ping eachother but everything which is outside the switch (internet, my home server etc)

i even see every machine in every arp table. but as soon as i try to ping something connected to the switch it goes timeout. i can ping the vlan interface from the connected hosts but not the other way round.

there are no access lists on the switches, dafault gateway is set, and ports are in the same vlan, and there is no firewall blocking anything on the hosts.
i can also access the ftp server of my home server from the netbook, but ftp from home server to netbook does not work.


any suggestions?

networker050184

Firewall on the PCs?

martell1000

nope. and as soon as i connect them both back to the 19.99$ no name switch everything works fine.

JasonIT

Using DHCP or static IP's? Both in the same subnet?

martell1000

figured it out, after all it seems to have been the windows firewall. i turned it ON and back OFF again and now everything works.

thanks everyone. nice troubleshooting lesson

MickQ

Bit of general advice to folks experiencing similar: If turning windows firewall off and on doesn't work, kill the process. That's fixed some "this should be working" situations for me.