SRX Clustering primary\lost

Many of you came across configuring cluster in SRX firewall and got lost after they tried almost everything but they still stuck in “primary\lost” mode .

A lot of engineers are not aware of one important thing which is “cabling arrangement” . And this issue is the most of all “primary\lost” issues !!

So this table will show you where to put fxp0-1 and fab links in every node in cluster

interfaces-of-chassic-clustering

Also you can use SRX HA Configuration Generator tool. It will help you build the best HA  configuration .

You also want to consider interfaces numbering when it comes to configure fab link. Take a look at this table :

interface_numbering

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