Table of contents
Second generation single frequency zero roaming
Second generation dual frequency zero roaming
Summary of Ruijie Zero Roaming Solution
Configuration of Ruijie Zero Roaming Solution
Configure the channel of the wireless signal
Enable and disable 5G zero roaming
Introduction to Zero Roaming
The difference between normal roaming and zero roaming
normal roaming
Roaming is roaming from one AP to another AP or one RF card to another RF card
Although the SSID has not changed, the BSSID has changed (ie: the MAC address of the wireless signal has changed)
Wlan——The concept of Wlan service set and Wlan roaming
zero roaming
The implementation method is to switch within the same SSID, and the BSSID does not change
Zero roaming solution
Same-frequency networking
That is, different APs transmit the same SSID, and change the BSSID of different APs to be consistent
At this time, when roaming occurs, the BSSID does not change; the terminal cannot perceive that the signal has been switched during the movement process.
The same-frequency networking is a test and does not support the live network
1st/2nd Generation Zero Roaming
Not switching between multiple APs, nor switching between multiple RF cards
It is switching under a Radio
Generation Zero Roaming
Zero roaming is achieved through 1 wireless AP, multiple power splitters, and multiple intelligent splitter units
Equipment introduction (the equipment is connected by feeder lines)
Wireless AP
AP620-H , 6 feeder ports are used to connect the intelligent distribution unit, supporting dual frequency (up to 802.11n)
Connect the AP and the power splitter through the feeder, and a maximum of 6 power splitters can be connected
Splitters
The function is to equally divide the output power of the AP to the remote end, and divide one wireless signal into multiple channels.
This solution uses a power splitter of 1 to 4; the split signal is connected to the intelligent split unit through the feeder port
intelligence unit
APD-HF04 , can only divide 1 into 4, divide the received signal into 4 ways (4 antennas)
The intelligent division unit transmits the signal received from the power divider through the connected antenna for terminal connection
That is: the signal of the intelligent distribution unit is transmitted from the AP, and the signal of the user connection is sent from the antenna of the intelligent distribution unit
user roaming
When the terminal is connected to the signal sent by the antenna, when switching from the first antenna of the intelligent distribution unit to the second antenna, it is switched under a Radio of the AP before and after the switch, and the BSSID is consistent, achieving zero roaming
defect
Only support intranet roaming, wireless to access the external network
Second generation single frequency zero roaming
Through 1 wireless AP and multiple intelligent distribution units to complete zero roaming (no need to use power splitter)
Equipment introduction (the equipment is connected by feeder lines)
Wireless AP
AP4210 , 6 feeder ports for connecting intelligent distribution units, single frequency (maximum support 802.11n)
Connect with the intelligent distribution unit through the feeder line, and connect up to 6 intelligent distribution units
intelligence unit
APD-M , not only can divide the received signal into 6 channels (divided into 2 pairs of 6 channels through 12 feeder ports, 1 pair is used to split the signal of AP4210, and a pair is used to split the built-in AP signal ) and has its own AP
Parameters of built-in AP - dual frequency single stream (2.4 and 5G share 1 stream) (maximum support 802.11n)
APD-M has two functions
- Divide the received signal into 6 antennas for terminal connection to achieve zero roaming
- A built-in AP sends a signal, and then divides it into 6 signals through its own feeder port for terminal connection to meet the needs of going to the external network
How to access intranet and intranet
Access the external network to connect to the signal sent by the built-in AP of APD-M, and access the internal network to connect to the signal sent by AP4210
APD-M is connected to the switch through the external network port, and then the traffic of the built-in AP is sent out through the external network port to realize the requirement of accessing the external network
The AP4210 is connected to the corresponding switch to access the internal network. At this time, the internal and external network is isolated first.
shortcoming
This solution cannot meet the large bandwidth requirements of the external network (APD-M supports 802.11n at most)
Program modification
Change APD-M to APD-M (AC), AP4210 remains unchanged
AP4210 (indoor AP), 6 feeder ports for connecting to intelligent distribution units, single frequency (maximum support 802.11n)
APD-M (AC) is 2 to 1 and 6, and the built-in AP is dual-band (2.4G is single-stream 11n, 5.8G is dual-stream 11ac)
defect
Intranet AP4210 only supports 802.11n and does not support large bandwidth
Second generation dual frequency zero roaming
Complete zero roaming through 1 wireless AP and multiple intelligent distribution units (the model has changed)
Equipment introduction (the equipment is connected by feeder lines)
Wireless AP
AP422 , 8 feeder ports for connecting intelligent distribution units, dual frequency (maximum support 802.11ac)
Connect with the intelligent distribution unit through the feeder line, and connect a maximum of 8 intelligent distribution units
intelligence unit
APD-M (EA), the signal is divided into 1 and 6 (divided into 2 pairs of 6 through 12 feeder ports, 1 pair is used to split the signal of AP4220, and a pair is used to split the built-in AP signal), And built-in AP
AP parameters - dual frequency single stream, 2.4G and 5G share 1 spatial stream (2.4G is single stream 11n, 5.8G is single stream 11ac)
Types of network wireless signals
Zero roaming 2.4g is sent by AP4220, for applications with high roaming requirements
Zero roaming 5g is issued by AP4220 for applications that require roaming and high bandwidth
The signal covered by 2.4G/smart distribution unit is used for the signal of the external network
The signal covered by the 5G intelligent distribution unit is used for the signal of the external network (but the interference is relatively large)
Precautions for the second-generation dual-band zero-roaming solution (zero-roaming can be achieved on the internal network, but not on the external network, because different APDs have different built-in APs)
1. AP4200+APD-M can deploy a total of 48 rooms, but it is recommended to have a total of 9 APs (AP4200+8 APDs)
2. When there are more than 48 rooms, two sets of zero-roaming devices need to be deployed, but zero-roaming devices are deployed between the two networks
3. Generally, the AP is deployed in the center, and the distance from the farthest room to the AP4220 is required to be no more than 50m (the maximum distance between the AP4200 and the APD is 15m, and the maximum distance between the APD and the antenna is 35m)
4. It is recommended to deploy four rooms and two corridors in one smart unit
5. Generally, APD is configured as 11 channels, and AP4220 is configured as 1 and 6 channels; and it is recommended that APD-M and AP4200 use different SSIDs
Summary of Ruijie Zero Roaming Solution
AP model
Intelligent point unit built-in AP parameters
defect
generation roaming
AP620-H Dual Frequency (Maximum 802.11n)
APD-HF04 without built-in AP
Unable to access external network
Second generation single frequency roaming
AP4210 Single Frequency (802.11n max)
APD-M dual frequency single stream
(2.4 and 5G share 1 stream) (maximum support 802.11n)This solution cannot meet the demand for large bandwidth of the external network
Second generation single frequency roaming
AP4210 Single Frequency (802.11n max)
APD-M (AC) Dual frequency multi-stream
(2.4G supports 11n for single stream, 5.8G supports 11ac for dual stream)Intranet does not support large bandwidth
Second generation dual frequency roaming
AP4220 Dual Band (Maximum 802.11ac)
APD-M (EA) dual frequency single stream
2.4G and 5G share 1 spatial stream (2.4G is single stream 11n, 5.8G is single stream 11ac)————
Dos and don'ts for any program
1. Pay attention to whether the device is powered by POE (802.3af) or POE+ (802.3at), and ensure that the power supply of POE+ and POE switches is sufficient
2. The low-loss SMA to SMA feeder is used for the connection between the AP and the intelligent distribution unit, and the double-strand low-loss SMA to SMA feeder is used for the connection between the intelligent distribution unit and the antenna
3. Feeder lines of different solutions must not be mixed, and the feeder lines and equipment must be from Ruijie manufacturers
4. Pay attention to the number of licenses managed on the AC; the intelligent distribution unit with built-in AP is also counted as an AP
5. If there is a problem with the signal sent by an antenna under the APD, you need to check whether there is a problem with the feeder between the antenna and the APD
6. If the signals sent by all antennas under the same APD are abnormal, it may be that the link between AP4220 and APD is damaged, there is a problem with the interface, the interface is not connected, etc.
Zero roaming signal strength recommendation (intranet)
2.4G at a distance of 1 meter from the antenna, the zero roaming signal strength is -30~-35dbm, and the APD signal strength is -35~40dbm
5G at a distance of 1 meter from the antenna, zero roaming and APD signal strength of -40~-50dbm
Configuration of Ruijie Zero Roaming Solution
Configure the channel of the wireless signal
Configure the channel of AP4220 and APD-M (EA) built-in AP (both are configured on the AC or the fat AP is configured directly on the AP)
It is recommended that the built-in AP be channel 11, the AP4200 signal be channel 1 or 6, and use different SSIDs
Generally, radio 1 is 2.4g radio frequency, and radio 2 is 5g radio frequency
ap-config APD-M Configure the built-in AP (named APD-M)
ap-mac 0000-0001-0001 Configure MAC to 0000-0001-0001
ap-group 123 Configure the group to which the AP belongs
channel 11 radio 1 Configure 2.4g channel 1
channel 36 radio 2 configure channel 36 of 5g
chan-width 40 radiu 2 Configure the bandwidth of 5g as 40
apsd disable radio 1 configuration 2.4g cancel power saving mode
apsd disable radio 2 configuration 5g cancel power saving mode
andetect enable enable feeder detection
ap-config AP4220
ap-mac 0000-0001-0002
ap-group 456
no fair-shedule
channel 1 radio 1
channel 149 radio 2
no short-gi enable radio 1chan-width 20 close 2.4g short-gi, reduce self-interference
802.11n mcs support 7 radio 1 802.11n is single stream on 2.4G (7 means single stream, 15 dual stream, 23 triple stream)
apsd disable radio 1 configuration 2.4g cancel power saving mode
apsd disable radio 2 configuration 5g cancel power saving mode
andetect enable enable feeder detection
Enable and disable 5G zero roaming
For the signal from AP4220, APD-M (EA) uses single-stream 5G 11ac for splitting by default; if zero roaming needs to use 2.4G signal for splitting (compatible with the previous solution), you need to turn off 5g zero roaming
Disable 5g zero roaming on APD (APD-M (EA) only supports 5g as a single stream)
ap-config APD-M-EA
no zero-roam enable Close 5g zero roaming channel
antenna receive 3 radio 2 configures 5g receiver as dual stream (3 is dual stream, 1 is single stream)
antenna transmit 3 radio 2 configures 5g transmission as dual stream
Enable 5g zero roaming on APD
ap-config APD-M-EA
zero-roam enable Open 5g zero roaming channel
antenna receive 1 radio 2 configure 5g receive as dual stream
antenna transmit 1 radio 2 configure 5g transmission as single stream
view configuration
show antdetect all View feeder connections
Three states: NY -
- Indicates no interface
N means the feeder is not connected, or there is a problem with the connection
Y means normal