Example for Configuring Radio Calibration

Radio Calibration Overview

Radio calibration can dynamically adjust channels and power of APs managed by the same AC to ensure that the APs work optimally. On a WLAN, the operating status of APs is affected by the radio environment. For example, signal interference occurs if adjacent APs managed by the same AC work on overlapping channels or an AP has high power. In this case, you can configure radio calibration on the AC.

Typical application scenarios of radio calibration are as follows:

During AP deployment, configure radio calibration to enable APs to automatically select the optimal channels.
When new APs are added to a network or the network environment changes, configure radio calibration so that APs can adjust channels and power at scheduled time to work optimally.

Configuration Notes

For details about common WLAN configuration notes, see General Precautions for WLAN. For more deployment and configuration suggestions, see Wireless Network Deployment and Configuration Suggestions.
For details about radio configuration notes, see Radio Configuration Suggestion.
From V200R011C10, WLAN configurations are automatically delivered, without the need of running the commit all command.
In this example, the security policy is WPA2-PSK-AES. To ensure network security, choose an appropriate security policy according to your network configurations.
In tunnel forwarding mode, the management VLAN and service VLAN cannot be the same. If you set the forwarding mode to direct forwarding, you are not advised to configure the management VLAN and service VLAN to be the same.
In direct forwarding mode, configure port isolation on the interface directly connected to APs. If port isolation is not configured, many broadcast packets will be transmitted in the VLANs or WLAN users on different APs can directly communicate at Layer 2.
Configure the management VLAN and service VLAN:
- In tunnel forwarding mode, service packets are encapsulated in a CAPWAP tunnel and forwarded to the AC. The AC then forwards the packets to the upper-layer network. Service packets and management packets can be forwarded normally only if the network between the AC and APs is added to the management VLAN and the network between the AC and upper-layer network is added to the service VLAN.
- In direct forwarding mode, service packets are not encapsulated into a CAPWAP tunnel, but are directly forwarded to the upper-layer network. Service packets and management packets can be forwarded normally only if the network between APs and upper-layer network is added to the service VLAN and the network between the AC and APs is added to the management VLAN.
When configuring radio calibration, set the channel mode and power mode of an AP that needs radio calibration to auto.
No ACK mechanism is provided for multicast packet transmission on air interfaces. In addition, wireless links are unstable. To ensure stable transmission of multicast packets, they are usually sent at low rates. If a large number of such multicast packets are sent from the network side, the air interfaces may be congested. You are advised to configure multicast packet suppression to reduce impact of a large number of low-rate multicast packets on the wireless network. Exercise caution when configuring the rate limit; otherwise, the multicast services may be affected.
- In direct forwarding mode, you are advised to configure multicast packet suppression on switch interfaces connected to APs.
- In tunnel forwarding mode, you are advised to configure multicast packet suppression in traffic profiles of the AC.
For details on how to configure traffic suppression, see How Do I Configure Multicast Packet Suppression to Reduce Impact of a Large Number of Low-Rate Multicast Packets on the Wireless Network?.
Table 1 and Table 2 list applicable products and versions.

Networking Requirements

As shown in Figure 1, a large number of APs are deployed in an office building. The APs connect to the AC through Switch_A to provide wireless services for users.

Manually configuring radio parameters (such as the channel) for the APs one by one would be time-consuming. To simplify network deployment, the IT department requires that the AC automatically allocate channels to the APs based on radio environments.

The following uses an AC running V200R009C00 as an example. The key configurations vary in different versions. For details, see the Command Reference in the actual version.

Figure 1 Networking diagram for configuring radio calibration

Data Planning

**Table 1** Data required for completing the configuration
Item	Data
DHCP server	The AC functions as a DHCP server to assign IP addresses to APs and STAs.
IP address pool for the APs	10.23.100.2-10.23.100.254/24
IP address pool for STAs	10.23.101.2-10.23.101.254/24
IP address of the AC's source interface	VLANIF 100: 10.23.100.1/24
AP group	Name: ap-group1 Referenced profiles: VAP profile wlan-vap, regulatory domain profile domain1, 5G radio profile radio5g, and 2G radio profile radio2g
Regulatory domain profile	Name: domain1 Country code: CN
SSID profile	Name: wlan-ssid SSID name: wlan-net
Security profile	Name: wlan-security Security policy: WPA2+PSK+AES Password: a1234567
VAP profile	Name: wlan-vap Forwarding mode: tunnel forwarding Service VLAN: VLANs in the VLAN pool Referenced profiles: SSID profile wlan-ssid and security profile wlan-security
5G radio profile	Name: radio5g Referenced profiles: RRM profile wlan-net and air scan profile wlan-airscan
2G radio profile	Name: radio2g Referenced profiles: RRM profile wlan-net and air scan profile wlan-airscan
RRM profile	Name: wlan-net
Air scan profile	Name: wlan-airscan Air scan channel set: all channels supported by the corresponding country code of an AP Air scan interval: 80000 ms Air scan duration: 80 ms

Configuration Roadmap

The configuration roadmap is as follows:

Configure the APs, AC, and upper-layer devices to communicate with each other.
Configure the AC as a DHCP server to assign IP addresses to APs and STAs.
Configure a VLAN pool for service VLANs.
Configure the APs to go online.
1. Create an AP group to allow for the unified configuration of multiple APs.
2. Configure AC system parameters, including the country code and source interface used by the AC to communicate with the APs.
3. Configure the AP authentication mode and import the APs offline to allow the APs to go online.
Configure WLAN service parameters for STAs to access the WLAN.
Configure radio calibration so that the AC can automatically allocate the optimal working channels to the APs.

Procedure

Set the NAC mode to unified mode on the AC (default setting). Configure SwitchA and the AC to allow the APs and AC to transmit CAPWAP packets.

# Add GE0/0/1, GE0/0/2, and GE0/0/3 on SwitchA to VLAN 100 (management VLAN).

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] vlan batch 100
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] port link-type trunk
[SwitchA-GigabitEthernet0/0/1] port trunk pvid vlan 100
[SwitchA-GigabitEthernet0/0/1] port trunk allow-pass vlan 100
[SwitchA-GigabitEthernet0/0/1] undo port trunk allow-pass vlan 1
[SwitchA-GigabitEthernet0/0/1] stp edged-port enable
[SwitchA-GigabitEthernet0/0/1] port-isolate enable
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] port link-type trunk
[SwitchA-GigabitEthernet0/0/2] port trunk pvid vlan 100
[SwitchA-GigabitEthernet0/0/2] port trunk allow-pass vlan 100
[SwitchA-GigabitEthernet0/0/2] undo port trunk allow-pass vlan 1
[SwitchA-GigabitEthernet0/0/2] stp edged-port enable
[SwitchA-GigabitEthernet0/0/3] port-isolate enable
[SwitchA-GigabitEthernet0/0/2] quit
[SwitchA] interface gigabitethernet 0/0/3
[SwitchA-GigabitEthernet0/0/3] port link-type trunk
[SwitchA-GigabitEthernet0/0/3] port trunk pvid vlan 100
[SwitchA-GigabitEthernet0/0/3] port trunk allow-pass vlan 100
[SwitchA-GigabitEthernet0/0/3] undo port trunk allow-pass vlan 1
[SwitchA-GigabitEthernet0/0/3] stp edged-port enable
[SwitchA-GigabitEthernet0/0/3] port-isolate enable
[SwitchA-GigabitEthernet0/0/3] quit

# Add GE0/0/4 that connects the SwitchA to the AC to VLAN 100.

[SwitchA] interface gigabitethernet 0/0/4
[SwitchA-GigabitEthernet0/0/4] port link-type trunk
[SwitchA-GigabitEthernet0/0/4] port trunk allow-pass vlan 100
[SwitchA-GigabitEthernet0/0/4] undo port trunk allow-pass vlan 1
[SwitchA-GigabitEthernet0/0/4] quit

# Add GE1/0/1 that connects the AC to SwitchA to VLAN 100.

[HUAWEI] sysname AC
[AC] vlan batch 100 101
[AC] interface gigabitethernet 1/0/1
[AC-GigabitEthernet1/0/1] port link-type trunk
[AC-GigabitEthernet1/0/1] port trunk allow-pass vlan 100
[AC-GigabitEthernet1/0/1] undo port trunk allow-pass vlan 1
[AC-GigabitEthernet1/0/1] quit

Configure the AC to communicate with the upstream device.

Configure AC uplink interfaces to transparently transmit service VLAN packets as required and communicate with the upstream device.

# Add AC uplink interface GE1/0/2 to service VLAN 101.

[AC] interface gigabitethernet 1/0/2
[AC-GigabitEthernet1/0/2] port link-type trunk
[AC-GigabitEthernet1/0/2] port trunk allow-pass vlan 101
[AC-GigabitEthernet1/0/2] undo port trunk allow-pass vlan 1
[AC-GigabitEthernet1/0/2] quit

Configure the AC as a DHCP server to allocate IP addresses to STAs and the AP.
# Configure the AC as the DHCP server to allocate an IP address to the AP from the IP address pool on VLANIF 100, and allocate IP addresses to STAs from the IP address pool on VLANIF 101.
Configure the DNS server as required. The common methods are as follows:
- In interface address pool scenarios, run the dhcp server dns-list ip-address &<1-8> command in the VLANIF interface view.
- In global address pool scenarios, run the dns-list ip-address &<1-8> command in the IP address pool view.
```
[AC] dhcp enable  //Enable the DHCP function.
[AC] interface vlanif 100
[AC-Vlanif100] ip address 10.23.100.1 24
[AC-Vlanif100] dhcp select interface  //Configure an interface-based address pool.
[AC-Vlanif100] quit
[AC] interface vlanif 101
[AC-Vlanif101] ip address 10.23.101.1 24
[AC-Vlanif101] dhcp select interface
[AC-Vlanif101] quit
```

Configure the APs to go online.

# Create an AP group.

[AC] wlan
[AC-wlan-view] ap-group name ap-group1
[AC-wlan-ap-group-ap-group1] quit

# Create a regulatory domain profile, configure the AC country code in the profile, and apply the profile to the AP group.

[AC-wlan-view] regulatory-domain-profile name domain1
[AC-wlan-regulate-domain-domain1] country-code cn
[AC-wlan-regulate-domain-domain1] quit
[AC-wlan-view] ap-group name ap-group1
[AC-wlan-ap-group-ap-group1] regulatory-domain-profile domain1 Warning: Modifying the country code will clear channel, power and antenna gain configurations of the radio and reset the AP. Continue?[Y/N]:y  
[AC-wlan-ap-group-ap-group1] quit
[AC-wlan-view] quit

# Configure the AC's source interface.

[AC] capwap source interface vlanif 100

# Import APs offline on the WLAN AC and add APs area_1 and area_2 to AP group ap-group1. Assume that an AP's MAC address is 60de-4476-e360. Configure a name for the AP based on the AP's deployment location, so that you can know where the AP is deployed from its name. For example, name the AP area_1 if it is deployed in Area 1.

The default AP authentication mode is MAC address authentication. If the default settings are retained, you do not need to run the ap auth-mode mac-auth command.

Each AP used in this example has two radios: radio 0 (2.4 GHz radio) and radio 1 (5 GHz radio).

[AC] wlan
[AC-wlan-view] ap auth-mode mac-auth
[AC-wlan-view] ap-id 0 ap-mac 60de-4476-e360
[AC-wlan-ap-0] ap-name area_1
[AC-wlan-ap-0] ap-group ap-group1 Warning: This operation may cause AP reset. If the country code changes, it will clear channel, power and antenna gain configuration s of the radio, Whether to continue? [Y/N]:y  
[AC-wlan-ap-0] quit
[AC-wlan-view] ap-id 1 ap-mac dcd2-fc04-b500
[AC-wlan-ap-1] ap-name area_2
[AC-wlan-ap-1] ap-group ap-group1 Warning: This operation may cause AP reset. If the country code changes, it will clear channel, power and antenna gain configuration s of the radio, Whether to continue? [Y/N]:y  
[AC-wlan-ap-1] quit

# Power on the AP and run the display ap all command to check the AP state. If the State field is displayed as nor, the AP has gone online.

[AC-wlan-view] display ap all
Total AP information:
nor  : normal          [2]
---------------------------------------------------------------------------------------
ID   MAC            Name   Group     IP             Type            State STA Uptime
---------------------------------------------------------------------------------------
0    60de-4476-e360 area_1 ap-group1 10.23.101.253  AP5030DN        nor   0   5M:2S
1    dcd2-fc04-b500 area_2 ap-group1 10.23.101.254  AP5030DN        nor   0   5M:4S
---------------------------------------------------------------------------------------
Total: 2

Configure WLAN service parameters.

# Create security profile wlan-security and set the security policy in the profile.

In this example, the security policy is set to WPA2+PSK+AES and password to a1234567. In actual situations, the security policy must be configured according to service requirements.

[AC-wlan-view] security-profile name wlan-security
[AC-wlan-sec-prof-wlan-security] security wpa2 psk pass-phrase a1234567 aes  //Configure security policy WPA2+PSK+AES.
[AC-wlan-sec-prof-wlan-security] quit

# Create SSID profile wlan-ssid and set the SSID name to wlan-net.

[AC-wlan-view] ssid-profile name wlan-ssid
[AC-wlan-ssid-prof-wlan-ssid] ssid wlan-net  //Set the SSID to wlan-net.
[AC-wlan-ssid-prof-wlan-ssid] quit

# Create VAP profile wlan-vap, set the data forwarding mode and service VLAN, and apply the security profile and SSID profile to the VAP profile.

[AC-wlan-view] vap-profile name wlan-vap
[AC-wlan-vap-prof-wlan-vap] forward-mode tunnel  //Set the service forwarding mode to tunnel.
[AC-wlan-vap-prof-wlan-vap] service-vlan vlan-id 101  //Set the VLAN ID to 101. By default, the VLAN ID is 1.
[AC-wlan-vap-prof-wlan-vap] security-profile wlan-security
[AC-wlan-vap-prof-wlan-vap] ssid-profile wlan-ssid
[AC-wlan-vap-prof-wlan-vap] quit

# Bind VAP profile wlan-vap to the AP group and apply the profile to radio 0 and radio 1 of the AP.

[AC-wlan-view] ap-group name ap-group1
[AC-wlan-ap-group-ap-group1] vap-profile wlan-vap wlan 1 radio 0
[AC-wlan-ap-group-ap-group1] vap-profile wlan-vap wlan 1 radio 1
[AC-wlan-ap-group-ap-group1] quit

Configure radio calibration.

# Create the RRM profile wlan-net and enable automatic channel selection and automatic transmit power selection in the RRM profile. By default, automatic channel selection and automatic transmit power selection are enabled.

[AC-wlan-view] rrm-profile name wlan-net
[AC-wlan-rrm-prof-wlan-net] undo calibrate auto-channel-select disable 
[AC-wlan-rrm-prof-wlan-net] undo calibrate auto-txpower-select disable
[AC-wlan-rrm-prof-wlan-net] quit

In V200R012 and later versions, the commands for configuring the channel selection and transmit power selection modes are executed in the AP group radio view or AP radio view instead of in the RRM profile view. For example, run the following commands to set the channel and transmit power selection modes of radio 0 of APs in AP group 1 to automatic:

[AC-wlan-view] ap-group name ap-group1
[AC-wlan-ap-group-ap-group1] radio 0
[AC-wlan-group-radio-ap-group1/0] undo calibrate auto-channel-select disable
[AC-wlan-group-radio-ap-group1/0] undo calibrate auto-txpower-select disable
[AC-wlan-group-radio-ap-group1/0] quit

In V200R019C00 and later versions, the format of commands for configuring the channel and transmit power selection modes is changed as follows:

[AC-wlan-view] ap-group name ap-group1
[AC-wlan-ap-group-ap-group1] radio 0
[AC-wlan-group-radio-ap-group1/0] calibrate auto-channel-select enable
[AC-wlan-group-radio-ap-group1/0] calibrate auto-txpower-select enable
[AC-wlan-group-radio-ap-group1/0] quit

# Create the air scan profile wlan-airscan and configure the scan channel set, scan interval, and scan duration. By default, an air scan channel set contains all channels supported by the corresponding country code of an AP.

[AC-wlan-view] air-scan-profile name wlan-airscan
[AC-wlan-air-scan-prof-wlan-airscan] scan-channel-set country-channel
[AC-wlan-air-scan-prof-wlan-airscan] scan-period 80
[AC-wlan-air-scan-prof-wlan-airscan] scan-interval 80000
[AC-wlan-air-scan-prof-wlan-airscan] quit

# Create the 2G radio profile radio2g and bind the RRM profile wlan-net and air scan profile wlan-airscan to the 2G radio profile.

[AC-wlan-view] radio-2g-profile name radio2g 
[AC-wlan-radio-2g-prof-radio2g] rrm-profile wlan-net
[AC-wlan-radio-2g-prof-radio2g] air-scan-profile wlan-airscan
[AC-wlan-radio-2g-prof-radio2g] quit

# Create the 5G radio profile radio5g and bind the RRM profile wlan-net and air scan profile wlan-airscan to the 5G radio profile.

[AC-wlan-view] radio-5g-profile name radio5g 
[AC-wlan-radio-5g-prof-radio5g] rrm-profile wlan-net
[AC-wlan-radio-5g-prof-radio5g] air-scan-profile wlan-airscan
[AC-wlan-radio-5g-prof-radio5g] quit

# Bind the 5G radio profile radio5g and 2G radio profile radio2g to the AP group ap-group1.

[AC-wlan-view] ap-group name ap-group1 
[AC-wlan-ap-group-ap-group1] radio-5g-profile radio5g // //In V200R010C00 and later versions, you need to specify the radio ID using the radio-5g-profile radio5g radio 1 command.
[AC-wlan-ap-group-ap-group1] radio-2g-profile radio2g //In V200R010C00 and later versions, you need to specify the radio ID using the radio-2g-profile radio2g radio 0 command.
[AC-wlan-ap-group-ap-group1] quit

# Set the radio calibration mode to schedule, configure the AC to start radio calibration at 3:00 a.m. every day.

[AC-wlan-view] calibrate enable schedule time 03:00:00

Commit the configuration.

[AC-wlan-view] commit all
Warning: Committing configuration may cause service interruption, continue?[Y/N]:y

Verify the configuration.

Connect STAs to the WLAN with SSID wlan-net and enter the password a1234567. Run the display station ssid wlan-net command on the AC. The command output shows that the STAs are connected to the WLAN wlan-net.

[AC-wlan-view] display station ssid wlan-net
Rf/WLAN: Radio ID/WLAN ID                                                     
Rx/Tx: link receive rate/link transmit rate(Mbps)                             
----------------------------------------------------------------------------------------
STA MAC          AP ID Ap name  Rf/WLAN  Band  Type  Rx/Tx      RSSI  VLAN  IP address     
----------------------------------------------------------------------------------------
e019-1dc7-1e08   0     area_1   0/1      2.4G  11n   65/38      -29   101   10.23.101.253
b878-2eb4-2689   1     area_2   0/1      2.4G  11n   78/43      -33   101   10.23.101.254
----------------------------------------------------------------------------------------
Total: 2 2.4G: 2 5G: 0

# Run the display radio all command on the AC to check radio calibration results.

[AC-wlan-view] display radio all
CH/BW:Channel/Bandwidth
CE:Current EIRP (dBm)
ME:Max EIRP (dBm)
CU:Channel utilization
ST:Status
----------------------------------------------------------------------
AP ID Name    RfID  Band  Type    ST      CH/BW    CE/ME   STA      CU
----------------------------------------------------------------------
1     area_2  0     2.4G  bgn     on      1/20M    28/28   1        10%
1     area_2  1     5G    an      on      149/20M  29/29   0        15%
0     area_1  0     2.4G  bgn     on      6/20M    28/28   1        15%
0     area_1  1     5G    an      on      153/20M  29/29   0        49%
----------------------------------------------------------------------
Total:4

# Radio calibration is complete half an hour after the radio calibration is manually triggered. The following configuration steps are not provided in the configuration file. After that, you can perform either of the configurations:
- (Recommended) Set the radio calibration mode to scheduled. Configure the APs to perform radio calibration in off-peak hours, for example, between 00:00 am and 06:00 am.
```
[AC-wlan-view] calibrate enable schedule time 03:00:00
[AC-wlan-view] commit all
Warning: Committing configuration may cause service interruption, continue?[Y/N]:y
```
- Manually fix the working channels of APs: disable automatic channel selection and automatic transmit power selection in the RRM profile. Manually trigger radio calibration when new APs are added to the network.
```
[AC-wlan-view] rrm-profile name wlan-net
[AC-wlan-rrm-prof-wlan-net] calibrate auto-channel-select disable 
[AC-wlan-rrm-prof-wlan-net] calibrate auto-txpower-select disable
[AC-wlan-rrm-prof-wlan-net] quit
[AC-wlan-view] calibrate enable manual
[AC-wlan-view] calibrate manual startup
[AC-wlan-view] commit all
Warning: Committing configuration may cause service interruption, continue?[Y/N]:y
```
  In V200R012 and later versions, the commands for configuring the channel selection and transmit power selection modes are executed in the AP group radio view or AP radio view instead of in the RRM profile view. For example, run the following commands to set the channel and transmit power selection modes of radio 0 of APs in AP group 1 to fixed:
```
[AC-wlan-view] ap-group name ap-group1
[AC-wlan-ap-group-ap-group1] radio 0
[AC-wlan-group-radio-ap-group1/0] calibrate auto-channel-select disable
[AC-wlan-group-radio-ap-group1/0] calibrate auto-txpower-select disable
[AC-wlan-group-radio-ap-group1/0] quit
```

Configuration Files

SwitchA configuration file

#
sysname SwitchA
#
vlan batch 100
#
interface gigabitethernet0/0/1
 port link-type trunk
 port trunk pvid vlan 100
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 100
 stp edged-port enable
 port-isolate enable group 1
#
interface gigabitethernet0/0/2
 port link-type trunk
 port trunk pvid vlan 100
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 100
 stp edged-port enable
 port-isolate enable group 1
#
interface gigabitethernet0/0/3
 port link-type trunk
 port trunk pvid vlan 100
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 100
 stp edged-port enable
 port-isolate enable group 1
#
interface gigabitethernet0/0/4
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 100
#
return

AC configuration file

#
sysname AC
#
vlan batch 100 to 101
#
dhcp enable
#
interface Vlanif100
 ip address 10.23.100.1 255.255.255.0
 dhcp select interface
#
interface Vlanif101
 ip address 10.23.101.1 255.255.255.0
 dhcp select interface
#
interface GigabitEthernet1/0/1
 port link-type trunk
 port trunk allow-pass vlan 100
 undo port trunk allow-pass vlan 1
#
interface GigabitEthernet1/0/2
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 101
#
capwap source interface vlanif100
#
wlan
 calibrate enable schedule time 03:00:00
 security-profile name wlan-security
  security wpa2 psk pass-phrase %^%#m"tz0f>~7.[`^6RWdzwCy16hJj/Mc!,}s`X*B]}A%^%# aes
 ssid-profile name wlan-ssid
  ssid wlan-net
 vap-profile name wlan-vap
  forward-mode tunnel
  service-vlan vlan-id 101
  ssid-profile wlan-ssid
  security-profile wlan-security
 regulatory-domain-profile name domain1
 air-scan-profile name wlan-airscan
  scan-period 80
  scan-interval 80000 
 rrm-profile name wlan-net
 radio-2g-profile name radio2g
  rrm-profile wlan-net
  air-scan-profile wlan-airscan 
 radio-5g-profile name radio5g
  rrm-profile wlan-net
  air-scan-profile wlan-airscan 
 ap-group name ap-group1
  regulatory-domain-profile domain1
  radio 0
   radio-2g-profile radio2g 
   radio-5g-profile radio5g 
   vap-profile wlan-vap wlan 1
  radio 1
   radio-5g-profile radio5g 
   vap-profile wlan-vap wlan 1
 ap-id 0 type-id 35 ap-mac 60de-4476-e360 ap-sn 210235554710CB000042
  ap-name area_1
  ap-group ap-group1
 ap-id 1 type-id 21 ap-mac dcd2-fc04-b500 ap-sn 210235554710CB000078
  ap-name area_2
  ap-group ap-group1
#
return