Example for Configuring Non-Fast Roaming Between APs in Different Service VLANs
Configuration Process
You need to configure and maintain WLAN features and functions in different profiles. These WLAN profiles include regulatory domain profile, radio profile, VAP profile, AP system profile, AP wired port profile, WIDS profile, WDS profile, and Mesh profile. When configuring WLAN services, you need to set related parameters in the WLAN profiles and bind the profiles to the AP group or APs. Then the configuration is automatically delivered to and takes effect on the APs. WLAN profiles can reference one another; therefore, you need to know the relationships among the profiles before configuring them. For details about the profile relationships and their basic configuration procedure, see WLAN Service Configuration Procedure.
Networking Requirements
As shown in Figure 1, two APs are deployed in a campus network to provide WLAN services for employees of two departments, and are managed and controlled by an AC. The AC dynamically assigns IP addresses to the APs and STAs. The employees of the two departments belong to different VLANs, that is, AP1 belongs to VLAN101 and AP2 belongs to VLAN102. The default security policy (WEP open system authentication) is used. User data is forwarded through tunnels.
The department requires that services should not be interrupted when a STA moves from AP1 to AP2.
Configuration Roadmap
- Configure parameters used for communication between the AC and APs to transmit CAPWAP packets.
- Configure the AC to function as a DHCP server to assign IP addresses to the STAs and APs.
- Configure basic WLAN services to enable the STAs to connect to the WLAN.
Item |
Data |
|---|---|
DHCP server |
The AC functions as a DHCP server to assign IP addresses to the STAs and APs. |
IP address pool for the APs |
10.23.100.2-10.23.100.254/24 |
IP address pool for the STAs |
10.23.101.2-10.23.101.254/24 10.23.102.2-10.23.102.254/24 |
AC's source interface address |
VLANIF100: 10.23.100.1/24 |
AP group |
|
|
|
Regulatory domain profile |
|
SSID profile |
|
Security profile |
|
VAP profile |
|
|
Configuration Notes
- 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.
Configure port isolation on the interfaces of the device directly connected to APs. If port isolation is not configured and direct forwarding is used, a large number of unnecessary broadcast packets may be generated in the VLAN, blocking the network and degrading user experience.
In tunnel forwarding mode, the management VLAN and service VLAN cannot be the same. Only packets from the management VLAN are transmitted between the AC and APs. Packets from the service VLAN are not allowed between the AC and APs.
Procedure
- Set the NAC mode to unified on the AC so that users can connect to the network properly.
<HUAWEI> system-view [HUAWEI] authentication unified-mode
If the NAC mode is changed from traditional to unified, the unified mode takes effect after you save the configuration and restart the device.
- Configure the AC and Switch_A so that the APs and AC can transmit CAPWAP packets.
# Configure Switch_A: add interfaces GE0/0/1, GE0/0/2, and GE0/0/3 to management VLAN 100.
<HUAWEI> system-view [HUAWEI] sysname Switch_A [Switch_A] vlan batch 100 [Switch_A] interface gigabitethernet 0/0/1 [Switch_A-GigabitEthernet0/0/1] port link-type trunk [Switch_A-GigabitEthernet0/0/1] port trunk pvid vlan 100 [Switch_A-GigabitEthernet0/0/1] port trunk allow-pass vlan 100 [Switch_A-GigabitEthernet0/0/1] port-isolate enable [Switch_A-GigabitEthernet0/0/1] quit [Switch_A] interface gigabitethernet 0/0/2 [Switch_A-GigabitEthernet0/0/2] port link-type trunk [Switch_A-GigabitEthernet0/0/2] port trunk pvid vlan 100 [Switch_A-GigabitEthernet0/0/2] port trunk allow-pass vlan 100 [Switch_A-GigabitEthernet0/0/2] port-isolate enable [Switch_A-GigabitEthernet0/0/2] quit [Switch_A] interface gigabitethernet 0/0/3 [Switch_A-GigabitEthernet0/0/3] port link-type trunk [Switch_A-GigabitEthernet0/0/3] port trunk allow-pass vlan 100 [Switch_A-GigabitEthernet0/0/3] quit
# Add GE0/0/1 that connects the AC to Switch_A to VLAN 100.
<HUAWEI> system-view [HUAWEI] sysname AC [AC] vlan batch 100 [AC] interface gigabitethernet 0/0/1 [AC-GigabitEthernet0/0/1] port link-type trunk [AC-GigabitEthernet0/0/1] port trunk allow-pass vlan 100 [AC-GigabitEthernet0/0/1] quit
- Connect the AC to the upper-level network device.
# Add the AC uplink interface GE0/0/3 to VLAN101 and VLAN102.
[AC] vlan batch 101 102 [AC] interface gigabitethernet 0/0/3 [AC-GigabitEthernet0/0/3] port link-type trunk [AC-GigabitEthernet0/0/3] port trunk allow-pass vlan 101 102 [AC-GigabitEthernet0/0/3] quit
- Configure the AC to function as a DHCP server to assign IP addresses to the STAs and APs.
# Configure the DHCP server based on the interface address pool. VLANIF100 provides IP addresses for AP1 and AP2, VLANIF101 provides IP addresses for STAs connected to AP1, and VLANIF102 provides IP addresses for STAs connected to AP2.
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 [AC] interface vlanif 100 [AC-Vlanif100] ip address 10.23.100.1 24 [AC-Vlanif100] dhcp select interface [AC-Vlanif100] quit [AC] interface vlanif 101 [AC-Vlanif101] ip address 10.23.101.1 24 [AC-Vlanif101] dhcp select interface [AC-Vlanif101] quit [AC] interface vlanif 102 [AC-Vlanif102] ip address 10.23.102.1 24 [AC-Vlanif102] dhcp select interface [AC-Vlanif102] quit
- Configure the AP to go online.
# Create an AP group and add the AP to the AP group.
[AC] wlan [AC-wlan-view] ap-group name ap-group1 [AC-wlan-ap-group-ap-group1] quit [AC-wlan-view] ap-group name ap-group2 [AC-wlan-ap-group-ap-group2] 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] ap-group name ap-group2 [AC-wlan-ap-group-ap-group2] 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-group2] quit [AC-wlan-view] quit
# Configure the AC's source interface.[AC] capwap source interface vlanif 100
# Import APs offline on the AC and add AP1 to AP group ap-group1 and AP2 to AP group ap-group2. Assume that the APs' MAC addresses are 60de-4476-e360 and 60de-4474-9640. Configure names for the APs based on the APs' deployment locations, so that you can know where the APs are deployed from their names. 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.
In this example, the AP5030DN is used and 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 Warning: This operation may cause AP reset. Continue? [Y/N]:y [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 60de-4474-9640 [AC-wlan-ap-1] ap-name area_2 Warning: This operation may cause AP reset. Continue? [Y/N]:y [AC-wlan-ap-1] ap-group ap-group2 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
# After the APs are powered on, run the display ap all command to check the AP state. If the State field is displayed as nor, the APs have gone online.
[AC-wlan-view] display ap all Total AP information: nor : normal [2] -------------------------------------------------------------------------------------------------- ID MAC Name Group IP Type State STA Uptime ExtraInfo -------------------------------------------------------------------------------------------------- 0 60de-4476-e360 area_1 ap-group1 10.23.100.254 AP5030DN nor 0 5M:2S - 1 60de-4474-9640 area_2 ap-group2 10.23.100.253 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 [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 [AC-wlan-ssid-prof-wlan-ssid] quit
# Create VAP profiles wlan-vap1 and wlan-vap2, set the data forwarding mode and service VLANs, and apply the security profile wlan-security and SSID profile wlan-ssid to the VAP profiles.
[AC-wlan-view] vap-profile name wlan-vap1 [AC-wlan-vap-prof-wlan-vap1] forward-mode tunnel [AC-wlan-vap-prof-wlan-vap1] service-vlan vlan-id 101 [AC-wlan-vap-prof-wlan-vap1] security-profile wlan-security [AC-wlan-vap-prof-wlan-vap1] ssid-profile wlan-ssid [AC-wlan-vap-prof-wlan-vap1] quit [AC-wlan-view] vap-profile name wlan-vap2 [AC-wlan-vap-prof-wlan-vap2] forward-mode tunnel [AC-wlan-vap-prof-wlan-vap2] service-vlan vlan-id 102 [AC-wlan-vap-prof-wlan-vap2] security-profile wlan-security [AC-wlan-vap-prof-wlan-vap2] ssid-profile wlan-ssid [AC-wlan-vap-prof-wlan-vap2] quit
# Bind VAP profile wlan-vap1 to AP group ap-group1, and VAP profile wlan-vap2 to AP group ap-group2, and apply the VAP profiles to radio 0 and radio 1 of the APs.
[AC-wlan-view] ap-group name ap-group1 [AC-wlan-ap-group-ap-group1] vap-profile wlan-vap1 wlan 1 radio 0 [AC-wlan-ap-group-ap-group1] vap-profile wlan-vap1 wlan 1 radio 1 [AC-wlan-ap-group-ap-group1] quit [AC-wlan-view] ap-group name ap-group2 [AC-wlan-ap-group-ap-group2] vap-profile wlan-vap2 wlan 1 radio 0 [AC-wlan-ap-group-ap-group2] vap-profile wlan-vap2 wlan 1 radio 1 [AC-wlan-ap-group-ap-group2] quit
- Set channels and power for the AP radios.
Automatic channel and power calibration functions are enabled by default. The manual channel and power configurations take effect only when these two functions are disabled. The channel and power configuration for the AP radios in this example is for reference only. In actual scenarios, configure channels and power for AP radios based on country codes of APs and network planning results.
# Disable automatic channel and power calibration functions of radio 0, and configure the channel and power for radio 0.[AC-wlan-view] ap-id 0 [AC-wlan-ap-0] radio 0 [AC-wlan-radio-0/0] calibrate auto-channel-select disable [AC-wlan-radio-0/0] calibrate auto-txpower-select disable [AC-wlan-radio-0/0] channel 20mhz 6 Warning: This action may cause service interruption. Continue?[Y/N]y [AC-wlan-radio-0/0] eirp 127 [AC-wlan-radio-0/0] quit# Disable automatic channel and power calibration functions of radio 1, and configure the channel and power for radio 1.[AC-wlan-ap-0] radio 1 [AC-wlan-radio-0/1] calibrate auto-channel-select disable [AC-wlan-radio-0/1] calibrate auto-txpower-select disable [AC-wlan-radio-0/1] channel 20mhz 149 Warning: This action may cause service interruption. Continue?[Y/N]y [AC-wlan-radio-0/1] eirp 127 [AC-wlan-radio-0/1] quit [AC-wlan-ap-0] quit - Verify the configuration.After the service configuration is complete, run the display vap ssid wlan-net command. If Status in the command output is displayed as ON, the VAPs have been successfully created on AP radios.
[AC-wlan-view] display vap ssid wlan-net Info: This operation may take a few seconds, please wait. WID : WLAN ID -------------------------------------------------------------------------------- AP ID AP name RfID WID BSSID Status Auth type STA SSID -------------------------------------------------------------------------------- 0 area_1 0 1 60DE-4476-E360 ON WPA2-PSK 0 wlan-net 0 area_1 1 1 60DE-4476-E370 ON WPA2-PSK 0 wlan-net 1 area_2 0 1 60DE-4474-9640 ON WPA2-PSK 0 wlan-net 1 area_2 1 1 60DE-4474-9650 ON WPA2-PSK 0 wlan-net ------------------------------------------------------------------------------- Total: 4
In the coverage area of AP1, connect the STA to the wireless network with SSID wlan-net and enter the password a1234567. After the STA successfully associates with the network, run the display station ssid wlan-net command on the AC. The command output shows that the STA with MAC address e019-1dc7-1e08 has associated with AP1.[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 1/1 5G 11n 38/64 -68 101 10.23.101.254 --------------------------------------------------------------------------------- Total: 1 2.4G: 0 5G: 1
When the STA moves from the coverage of AP1 to AP2, run the display station ssid wlan-net command on the AC to check the STA access information. The STA is associated with AP2.[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 1 area_2 1/1 5G 11n 46/59 -58 101 10.23.101.254 ---------------------------------------------------------------------------------------- Total: 1 2.4G: 0 5G: 1
Run the display station roam-track sta-mac e019-1dc7-1e08 command on the AC to check the STA roaming track.[AC-wlan-view] display station roam-track sta-mac e019-1dc7-1e08 Access SSID:huawei Rx/Tx:link receive rate/link transmit rate(Mbps) c:PMK Cache Roam r:802.11r Roam s:Same Frequency Network ------------------------------------------------------------------------------ L2/L3 AC IP AP name Radio ID BSSID TIME In/Out RSSI Out Rx/Tx ------------------------------------------------------------------------------ -- 10.23.100.1 area_1 0 60de-4476-e360 2015/02/07 17:48:30 -51/-48 46/13 L2 10.23.100.1 area_2 0 60de-4474-9640 2015/02/07 17:54:50 -58/- -/- ------------------------------------------------------------------------------ Number: 1
Configuration Files
SwitchA configuration file
# sysname Switch_A # vlan batch 100 # interface GigabitEthernet0/0/1 port link-type trunk port trunk pvid vlan 100 port trunk allow-pass vlan 100 port-isolate enable group 1 # interface GigabitEthernet0/0/2 port link-type trunk port trunk pvid vlan 100 port trunk allow-pass vlan 100 port-isolate enable group 1 # interface GigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 100 # return
AC configuration file
# sysname AC # vlan batch 100 to 102 # 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 Vlanif102 ip address 10.23.102.1 255.255.255.0 dhcp select interface # interface GigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 100 # interface GigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 101 to 102 # capwap source interface vlanif100 # wlan 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-vap1 forward-mode tunnel service-vlan vlan-id 101 ssid-profile wlan-ssid security-profile wlan-security vap-profile name wlan-vap2 forward-mode tunnel service-vlan vlan-id 102 ssid-profile wlan-ssid security-profile wlan-security regulatory-domain-profile name domain1 ap-group name ap-group1 regulatory-domain-profile domain1 radio 0 vap-profile wlan-vap1 wlan 1 radio 1 vap-profile wlan-vap1 wlan 1 ap-group name ap-group2 regulatory-domain-profile domain1 radio 0 vap-profile wlan-vap2 wlan 1 radio 1 vap-profile wlan-vap2 wlan 1 ap-id 0 type-id 35 ap-mac 60de-4476-e360 ap-sn 210235554710CB000042 ap-name area_1 ap-group ap-group1 radio 0 channel 20mhz 6 eirp 127 calibrate auto-channel-select disable calibrate auto-txpower-select disable radio 1 channel 20mhz 149 eirp 127 calibrate auto-channel-select disable calibrate auto-txpower-select disable ap-id 1 type-id 35 ap-mac 60de-4474-9640 ap-sn 210235554710CB000078 ap-name area_2 ap-group ap-group2 # return