HA legacy mode

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Hey fellas,

I am running load master in HA mode. I am routing CARP heartbeats for HA check via our production network.On taking pcaps, I found that I was loosing multicast packets. Master was sending probes in proper way.However, Back-up was not receiving all of them resulting in failover. It looks like my production network is blocking some multicast packets. To test it out, I thought of running HA in legacy mode. But, there is no option to set HA in legacy mode.

Load Master version: 7.0-14a.20140320-1255

Any ideas to resolve this issue? or How can i set legacy mode in my load balancers?

Thanks..

5 comments

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James Rago -- K360 Technical Product Manager Official comment

In your case IGMP snooping should be disabled since the multicast packets are probably getting held up there. The reason the config sync is working is because that is handled through an SSH tunnel.

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Barry Gleeson

Legacy Mode is no longer supported in the newest firmware so you will need to use CARP.
If you IGMP Snooping enabled this may be blocking the CARPs (but I would expect all of these to be blocked and not just some)
What is the infrastructure between the Loadmasters? Are they Hardware/VLMs?

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amrinder.singh

Thanks for the reply. It is good to know that legacy mode is no longer supported. We got a bunch of switches between load load masters. One more thing to add, heath check packets are dropping only when they are going via production network. When there is direct connection,packets are getting received properly.

Also, We are using same production link for HA update.It is just fine. In pcaps, tcp is establishing and sending configs to back up in fluently.

I was also thinking about disabling IGMP snooping but this it is too big a task when devices are in production.

These are hardware ones.

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amrinder.singh

You are right. This is exactly what I was thinking. To test it out, I have two options. Either run HA in legacy mode or disable IGMP Snooping on switches.Disabling IGMP snooping will too much at stake. Is downgrading Load Master version an option?? If Yes, Which version will give me the ability to use HA legacy mode ??

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James Rago -- K360 Technical Product Manager

You will need to downgrade to 7.0-10 to regain that ability.