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.


4. check the results
[root@hpssmvr04 ~]# cat /proc/net/bonding/bond0 |grep LACP