Juniper SRX - Interface monitoring now working

Hi,

Whenever we deploy SRXs we use interface monitors with redundancy groups and reths... this is the first time I've deployed on a SRX345 and also the first time I've had a major problem.

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If I pull a cable (simulating an event) the interface monitor will identify there was an event and depending on the weight, move to the other node for that RG or simply subtract the weight from 255.

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The issue is when I plug back in the cable, the LED status light is green but the interface shows down in the CLI , if I pull and put back in both interfaces in a RG... neither come back.

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Can't replicate it on other SRXs and have never had this issue before. Software - we upgraded to the recommended JTAC version, which has a lot more layer2 default config and functionallity than older junos's so I reverted back to 15.1 which works on SRX 1500 and 4100, 4200's without any issue

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show chassis cluster interfaces Control link status: Up Control interfaces: Index Interface Monitored-Status Internal-SA Security 0 fxp1 Up Disabled Disabled Fabric link status: Up Fabric interfaces: Name Child-interface Status Security (Physical/Monitored) fab0 ge-0/0/14 Up / Up Disabled fab0 fab1 ge-5/0/14 Up / Up Disabled fab1 Redundant-ethernet Information: Name Status Redundancy-group reth0 Down Not configured reth1 Up 1 reth2 Down 2 reth3 Down Not configured Redundant-pseudo-interface Information: Name Status Redundancy-group lo0 Up 0 Interface Monitoring: Interface Weight Status Redundancy-group (Physical/Monitored) ge-5/0/12 128 Up / Up 1 ge-5/0/11 128 Down / Down 1 ge-0/0/12 128 Up / Up 1 ge-0/0/11 128 Up / Up 1 ge-5/0/8 255 Down / Down 2 ge-0/0/8 255 Down / Down 2 

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set chassis cluster reth-count 4 set chassis cluster redundancy-group 0 node 0 priority 200 set chassis cluster redundancy-group 0 node 1 priority 100 set chassis cluster redundancy-group 1 node 0 priority 200 set chassis cluster redundancy-group 1 node 1 priority 100 set chassis cluster redundancy-group 1 preempt set chassis cluster redundancy-group 1 interface-monitor ge-0/0/11 weight 128 set chassis cluster redundancy-group 1 interface-monitor ge-0/0/12 weight 128 set chassis cluster redundancy-group 1 interface-monitor ge-5/0/11 weight 128 set chassis cluster redundancy-group 1 interface-monitor ge-5/0/12 weight 128 set chassis cluster redundancy-group 2 node 0 priority 200 set chassis cluster redundancy-group 2 node 1 priority 100 set chassis cluster redundancy-group 2 interface-monitor ge-0/0/8 weight 255 set chassis cluster redundancy-group 2 interface-monitor ge-5/0/8 weight 255 

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Anyone come across this ?

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Thanks

Cian