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IP SLA Install Question

FormerMember

I have two NPM pollers, do I install IP SLA on both systems? If so, primary or secondary first?

Thanks

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ip_sla_install

ip_sla_manager

Accepted answers

chris.smouse

Hi rmmagow -

Great question.

You will need to install IPSLA Manager on both pollers. You'll want to install it on the secondary system first, so it will know how to process IPSLA Manager jobs that the primary system will send to it.

All comments

chris.smouse

Hi rmmagow -

Great question.

savell

OK, so now I'm confused.

I have a support case currently open where I am having issues using IPSLA Manager against nodes defined on secondary systems. The advice I received is that an install of IPSLA manager is not required on the secondary pollers - and it's being treated as a bug.

Is this advice not correct? Is there a licence implication with installation on secondary pollers?

I can't find reference to this type of configuration in the admin guide - maybe I just missed it (along with the additional web server install notes).

Dave.

macnugetz

Hi Dave,

Sorry for the confusion. You do need to install IP SLA Manager on both primary and secondary pollers. There is no license implication for installing on the secondary poller.

savell

Cool, thanks Craig.

That might get rid of our current open issue I suspect - will implement this suggestion tonight.

Dave.

FormerMember

Chris, we already have IPSLA installed on the primary server and has been running operations for a year. We now have 2 additional pollers. Your instruction has me a little confused. You are suggesting to install the secondary pollers first. Does this mean we have to uninstall IPSLA on the primary poller first before we install to the secondary pollers? Please advise.

jiri.tomek

Hello Ron,

you can install IPSLA on secondary poller without uninstalling it from primary.

FormerMember

Thanks Jiri.

With multiple pollers, another question has come to mind. How does IPSLA distribute the load across additional pollers?

tom.rybka

Hi Ron,

Polling of a node is executed on the main poller or any installed additional poller, depending on your choice. You can manage the assignments of nodes to polling engines in Node management page.

FormerMember

Thanks Tomas. I'm familiar with Manage Nodes and distributing nodes across pollers. What I'm unclear about is when I create a 2-way operation (e.g., ICMP PATH ECHO) using nodeA as the source managed by PollerA and the target is nodeB managed by PollerB does pollerA manage/poll the result of both nodeA & nodeB operations or does PollerA only manage/poll operations where it is the source and PollerB manages/polls operations where it is the source? I hope I made sense. How's this handled across multiple pollers with meshed operations?