How Does The Son Perform Device Discovery; Does The Son Configuration Change If The Master Device Is Disconnected; Does The Son Support The Preemption Mode; What Is The Ip Address Of The Master Device On The Son - Ruijie Reyee Series Faqs

Cookbook
7.7

How Does the SON Perform Device Discovery?

Device discovery is based on Layer 2 broadcast, so all devices must be deployed at the same layer without
VLAN or port isolation configuration.
Note
The SON establishment does not require a device to access the Internet.
7.8 Does the SON Configuration Change If the Master Device Is
Disconnected?
The master device will be re-elected after the old master device is disconnected. The configuration does not
change during re-election.
7.9

Does the SON Support the Preemption Mode?

Preemption means that a device with a higher priority is added to a stable network, and the master device will
change accordingly. Typical preemption scenarios are as follows.

An EG router is added to RAP networking:
○
After the master device is successfully elected, the EG router is added and will become the new master
device.
○ Preemption time: 7s to 8s

An RAP device is added to RAP networking:
○ After the master device is successfully elected, preemption will be delayed if a new RAP with a higher
priority is added.
○
Preemption time: If the startup time of the master device is less than 36 hours and the startup time of the
new device is longer than 5 minutes, preemption will start. Otherwise, preemption will start when the new
device's startup time is longer than 30 minutes.
Note
An EG router can only act as the master device and cannot be preempted.
7.10

What Is the IP Address of the Master Device on the SON?

The IP address of the master device is 10.44.77.253.
7.11 What Is the Difference Between the Default SSID @Ruijie-s and
@Ruijie-m?
@Ruijie-m is generated after the SON established successfully, while @Ruijie-s is generated on a standalone
device.
16
FAQs About SON