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Lag (Active Backup)

Hello Team

I user the Lag on Sophos with active and backup and i set the Primary interface to be auto . I want to know dependent on what the firewall will select the active link .

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0 Keyur over 5 years ago

Hi Hesham Mahmoud1

Primary Interface (Available only if Mode selected is Active-Backup )

Select an interface to be the primary interface. This interface remains active as long as it is available.

Default: Auto

The interfaces included in the member interface list are listed here. If you set the Primary Interface to Auto, the device selects any interface from the member interface list as the primary interface.
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0 Hesham Mahmoud1 over 5 years ago in reply to Keyur

Hello Keyur

I want to know in default : auto

dependent on what sophos will select the active primary interface
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0 Vishal_R over 5 years ago in reply to Hesham Mahmoud1

Hi Hesham Mahmoud1

If you set the Primary Interface to Auto, the device selects any interface from the member interface list as the primary interface.

Reference:

https://docs.sophos.com/nsg/sophos-firewall/v16058/Help/en-us/webhelp/onlinehelp/index.html#page/onlinehelp/LinkAggregationEdit.html
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0 Hesham Mahmoud1 over 5 years ago in reply to Vishal_R

Hello

I am sorry but it doesn't make any sense their is must be an algorithm which the firewall used to select the primary in the auto mode .
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0 Keyur over 5 years ago in reply to Hesham Mahmoud1

Hi Hesham Mahmoud1

As we have shared details in previous responses, it will select it randomly.

If you set the Primary Interface to Auto, the device selects any interface from the member interface list as the primary interface. Mentioned in the document as well, which we have provided.

If you are facing any issue while configuration, please share more details, it would help us to assist you better.
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