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How to change Low Priority Link NIC in VCS 6.0 Linux

Created: 20 Oct 2012 • Updated: 23 Oct 2012 | 7 comments
uvahpux's picture
This issue has been solved. See solution.

Hi All,

Greetings!

I need you guys  help to change my network interface  which was configured for Low priority link. 

We are running a two node cluster vcs 6.0 in Linux platform as per the below configuration.

There are two llt network  and a low priority is configured in this vcs and below are the interface information.

eth0 - Low priority link.

eth1 - llt1

eth2 - llt2

Now there is a requirement to configure a linux bonding for public interface ( eth0 ), after the linux bonding configuration the public interface name will change as bond0. so i need to update the vcs configuration accrodingly.

Please help me in this regard.

Comments 7 CommentsJump to latest comment

mikebounds's picture

You just need to update /etc/llttab and then restart VCS, gab and llt - you can reboot to do this, or to do this online:

On one node:

hastop -all -force

Then on both nodes:

gabconfig -U
lltconfig -U
lltconfig -c
. /etc/gabtab

Then on both nodes

hastart

Mike

UK Symantec Consultant in VCS, GCO, SF, VVR, VxAT on Solaris, AIX, HP-ux, Linux & Windows

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SOLUTION
Adhiraj Joshi's picture

You can do this on the fly:

First remove the low pri link using:

lltconfig -u <eth0-tagname>

And add the new low-pri link using:

lltconfig -t <bond0-tagname>  -d /dev/<bond0 device> -b ether -l 

The "-l" is for low pri.

Regards,

Adhiraj.

Adhiraj Joshi's picture

Please note that with the above command, changes will not be persistent across reboot/cluster restart. If you want the changes to be persistent, then please update the llttab by replacing the eth0 entry with bond0 link.

priyanka3rdfeb@gmail.com's picture

Thanks for your reply,

Following is the content of /etc/llttab on node1

set-node node1
set-cluster 26020
link bond0 bond0 - ether - -

Does it mean that bond0 (bonded interface) will be used for the VCS heartbeat?

arangari's picture

Out of the two solutions provided above - one by Mike and other by Adhiraj, I think the one by Adhiraj is better as it doesnt need HA to be stopped.  

Thanks and Warm Regards,

Amit Rangari

If this post helped you resolving the issue, please mark it as solution. _____________________________________________________________________________

mikebounds's picture

I would agree with this

UK Symantec Consultant in VCS, GCO, SF, VVR, VxAT on Solaris, AIX, HP-ux, Linux & Windows

If this post has answered your question then please click on "Mark as solution" link below