Hi There, I am really stumped on this one. I have setup several servers running CentOS and network bonding, however I am just trying to set one up (CentOS 5.3) and I have packet loss + a time of about 700ms! Ive tried everything I know, its not a switch problem tried 3 already, triple checked the VLANs, both NICs running at full-duplex 100. Can't seem to figure this one out! Any help would be appreciated. modprobe.conf: alias eth0 tg3 alias eth1 tg3 alias scsi_hostadapter mptbase alias scsi_hostadapter1 mptsas alias scsi_hostadapter2 ata_piix alias bond0 bonding options bond0 miimon=100 mode=5 ifcfg-bond0: DEVICE=bond0 BOOTPROTO=none BROADCAST=xx IPADDR=xx GATEWAY=xx NETMASK=xx NETWORK=xx ONBOOT=yes USERCTL=no ifcfg-eth0: # Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express DEVICE=eth0 ONBOOT=yes BOOTPROTO=none #HWADDR=00:22:196:3B:74 USERCTL=no MASTER=bond0 SLAVE=yes ifcfg-eth1: # Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express DEVICE=eth1 ONBOOT=yes BOOTPROTO=none #HWADDR=00:22:196:3B:75 USERCTL=no MASTER=bond0 SLAVE=yes Am I missing something simple? I can't seem to figure this one out! Thanks Again,