Changing LACP timeout

How to change the LACP Timeout?

Here are Steps how to change the the LACP timeout from 3 sec to 30 sec as requested by the NET department at KIT-SCC.

With this change now all-HPSS Hosts have the same timeout setting as the SCC-Switches.

Changes done by Jonathan Hermann (IBM) on 5.11.2014.

1. Backup ifcfg-bond0 file
ssh_all "cp /etc/sysconfig/network-scripts/ifcfg-bond0 /etc/sysconfig/network-scripts/ifcfg-bond0.20141105"

2. set lacp_rate=0

ssh_all "sed -i 's/lacp_rate=1/lacp_rate=0/' /etc/sysconfig/network-scripts/ifcfg-bond0"

3. restart all network interfaces used in the bonding
Since the interfaces used for the bond0 are different on cores and movers, be careful using ssh_all commands!

Example from hpssmvr04:

[root@hpssmvr04 ~]# cat /proc/net/bonding/bond0 |grep 'Slave Interface'
Slave Interface: eth0
Slave Interface: eth1
Slave Interface: eth6
Slave Interface: eth7


So on hpssmvr04, issue the following commands:
ifdown bond0
ifdown eth0
ifdown eth1
ifdown eth6
ifdown eth7
ifup eth0
ifup eth1
ifup eth6
ifup eth7
ifup bond0

Only then the change in LACP rate will become active.