Software/Driver Configuration And Fine-Tuning; Offloading Tcp Traffic Over A Bonded Interface - Chelsio Communications Terminator Series Installation And User Manual

Chapter XVI. Offload Multi-Adapter Failover (MAFO)

Software/Driver Configuration and Fine-tuning

4.1.

Offloading TCP traffic over a bonded interface

The Chelsio MAFO driver supports only the active-backup (mode=1) mode. To offload TCP
traffic over a bonded interface, use the following method:
i. Load the network driver with TOE support:
[root@host~]# modprobe t4_tom
ii. Create a bonded interface:
[root@host~]# modprobe bonding mode=1 miimon=100
iii. Bring up the bonded interface and enslave the interfaces to the bond:
[root@host~]# ifconfig bond0 up
[root@host~]# ifenslave bond0 ethX ethY
ethX and ethY are interfaces of different adapters.
Note
iv. Assign IPv4/IPv6 address to the bonded interface
[root@host~]# ifconfig bond0 X.X.X.X/Y
[root@host~]# ifconfig bond0 inet6 add <128-bit IPv6 Address> up
v. Disable FRTO on the PEER:
[root@host~]# sysctl -w net.ipv4.tcp_frto=0
vi. Disable TCP timestamps:
[root@host~]# sysctl -w net.ipv4.tcp_timestamps=0
All TCP traffic will be offloaded over the bonded interface now and fail-over will happen in case
of link-down event.
Chelsio Unified Wire for Linux 247