CODEWITHSUNDEEP
clinuxethernet
César Ortiz
César Ortiz

Reputation: 311

How to know the active slave interface in a bonding pair

I am working under Linux, with two physical ethernet interfaces. I have grouped the two interfaces to a bonding interface for backup... and it works.

I would like to know if there is any way to know, from my C user program, what is the active interface.

Thanks

Upvotes: 1

Views: 9295

Answers (2)

digitalTrilunaire
digitalTrilunaire

Reputation: 105

Another method to know it (tested on Debian) is looking at the file /proc/net/bonding/bondX. Replace bondX with the name of your interface.

Upvotes: 0

jørgensen
jørgensen

Reputation: 10579

Look at /sys/class/net/bond0/bonding/active_slave and read it using a program or code of your choice. (Replace path accordingly if using an interface name different from bond0.)

Upvotes: 4

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