Greetings. I'm having a slight issue with some NFS file transfers. Configuration is like this: MACHINEA --> CISCO3600 --> SWITCH --> MACHINEB I also have a configuration like this: MACHINEA --> SWITCH (same one as abonve) --> MACHINEB On the second configuration my NFS works fine.. however in the first configuration it will start to work fine and then after running for maybe 25 minutes (it's used for backups on some linux server) it will just die with messages: NFS server at xxx.xxx.xxx.xxx is not responding. Retrying: OK NFS server at xxx.xxx.xxx.xxx is not responding. Retrying: OK NFS server at xxx.xxx.xxx.xxx is not responding. Retrying: OK NFS server at xxx.xxx.xxx.xxx is not responding. Retrying: OK And the backup will die. Router configs for the two interfaces look like: interface FastEthernet0/0 description Interconnect with 3024 Dell Primary Switch for the 63.174 block ip address 63.174.xxx.xxx 255.255.255.0 no ip redirects no ip unreachables duplex auto speed auto arp timeout 1800 and interface FastEthernet1/1 description Wireless / Highspeed Interface ip address 65.173.xxx.xxx 255.255.255.0 no ip redirects no ip unreachables duplex auto speed auto arp timeout 1800 Does anyone have any ideas why this would be happening? ~ Matt