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SRX1500 - Reth

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Hi,

 

I Could someone please clear up a point of confusion for me:

 

I have configured an "active/active" and also an "active/passive" successfully, but there is one part of the configuration that is confusing me slightly and I am amazed the HA even works because of this:

 

For the data plane configuration (fab ports) the example (and what I have used) is:

set interfaces fab0 fabric-options member-interfaces xe-0/0/16

set interfaces fab0 fabric-options member-interfaces xe-0/0/17

set interfaces fab0 fabric-options member-interfaces xe-7/0/16

set interfaces fab0 fabric-options member-interfaces xe-7/0/17

 

This is all good..... but then, it says "For failover use the following ports for the reth and tie to redundancy groups"

 

set interfaces xe-6/0/0 gigether-options redundant-parent reth0

set interfaces xe-6/1/0 gigether-options redundant-parent reth1

set interfaces xe-18/0/0 gigether-options redundant-parent reth0

set interfaces xe-18/1/0 gigether-options redundant-parent reth1

 

Why, if these are mentioned as the "failover data ports", are they completely different to the fab ports? I would have expected them to be the same...... My config works, but I want to understand why it works.

 

Thanks


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