AP Registration method

There are two registration methods: AC discovers AP and AP discovers AC

AC discovers AP in two modes: two-layer discovery mode and three-layer discovery mode

The AP finds AC in two ways: statically specifying the AC list on the AP, and acquiring the AC list through DHCP (using option 43)

//During project implementation, it is recommended to use the AC two-layer discovery AP mode (AC, AP two-layer connectivity) or DHCP option 43 mode to let AP discover AC (AC, AP three-layer connectivity)//

AP registration message

Regardless of the registration method, it must be ensured that the AC management address and the AP address must be interconnected!!!!

AC Level 2 discovery AP

Basic principle: AC can specify the list of two-layer auto discovered vlans, and send auto discovered messages to each vlan in the list. The AP receiving the broadcast discovery message will respond to the AC.

Note: Only the Discovery message sent by AC is broadcast, and the subsequent AC-AP interaction messages are unicast (udp).

The following is the Layer 2 discovery topology

AC configuration

 Service dhcp/Use DHCP service to issue IP to AP/ ! ip dhcp pool vlan100 network-address 192.168.100.0 255.255.255.0 default-router 192.168.100.254 ! vlan 1; one hundred ! Interface Ethernet1/0/1 switchport mode trunk ! interface Vlan100 ip address 192.168.100.254 255.255.255.0 ! ! no login wireless no auto-ip-assign enable No discovery vlan list 1/Close the default vlan list/ Discovery vlan list 100/This vlan list is generally the same as the AP interface vlan id, and the default vlan list is vlan1/ Static ip 192.168.100.54/management address/

AP configuration

 DCN-WLAN AP # set management vlan id 100/Modify AP interface vlan id, the default is vlan 1/ DCN-WLAN-AP# get management detail   Property Value --------------------------------------------- vlan-id 100 interface brvlan100 Static ip 192.168.1.10/ap default address/ static-mask 255.255.255.0  IP 192.168.100.1/Address sent by DHCP/ mask 255.255.255.0

View the AC discovery vlan list

 DCWS#show wireless discovery vlan-list VLAN Name --------------------------- 100 VLAN0100

Check whether wireless is on

 DCWS#show wireless Administrative Mode............................  Enable Operational Status.............................  Enabled

Check whether to register

 DCWS # show wireless ap failure status/ MAC Address  (*) Peer Managed IP Address Last Failure Type Age  ------------------ --------------------------------------------- 00-03-0f-30-a1-60 192.168.100.1 No Database Entry 0d:00:00:05

If you want to use the AP to go online without configuration, the AP is the default configuration, the AC interface is configured with an intrinsic vlan of 100, and the vlan list is the default vlan 1

AC III Layer Discovery AP 

Basic principle: The AC is configured with a three-layer discovery IP address list. The AC sends unicast packets to discover APs according to the addresses in the list.

The following is the three-layer discovery&AP discovery AC topology

SW2 main configuration commands

 Service dhcp/Use DHCP to send addresses to APs/ ! ip dhcp pool vlan100 network-address 100.1.1.0 255.255.255.0 lease 45 0 0  default-router 100.1.1.254 ! vlan 1; one hundred ! Interface Ethernet1/0/1 switchport mode trunk switchport trunk native vlan 100

The router configuration is omitted to ensure the interconnection of the whole network

Check the AC routing table&interface information&test whether it can be pinged

 DCWS(config)#show ip route  Codes: K - kernel, C - connected, S - static, R - RIP, B - BGP O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default O 10.1.1.0/30 [110/3] via 30.1.1.1, Vlan233, 00:03:02 tag:0 O 20.1.1.0/30 [110/2] via 30.1.1.1, Vlan233, 00:03:02 tag:0 C 30.1.1.0/30 is directly connected, Vlan233 tag:0 O 100.1.1.0/24 [110/4] via 30.1.1.1, Vlan233, 00:03:02 tag: 0/Existing AP network segment routing/ C 127.0.0.0/8 is directly connected, Loopback tag:0 Total routes are : 5 item(s) DCWS(config)#show ip interface brief Index Interface IP-Address Protocol 11001 Vlan1 192.168.1.1 down 11233 Vlan233 30.1.1.2 up/This address is used as the management address/ 17500 Loopback 127.0.0.1 up DCWS#ping 100.1.1.1  Type ^c to abort. Sending 5 56-byte ICMP Echos to 100.1.1.1, timeout is 2 seconds. !!!!! / Be able to communicate/ Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/0 ms

AC wireless configuration

 wireless no auto-ip-assign enable discovery ip-list 100.1.1.1 static-ip 30.1.1.2

View the AC three-layer discovery list

 DCWS#show wireless discovery ip-list Maximum Number of Configurable Entries.........  two hundred and fifty-six Total Number of Configured Entries.............  one Total Number of Polled Entries.................  one Total Number of Not-Polled Entries.............  zero Total Number of Discovered Entries.............  zero Total Number of Discovered-Failed Entries......  zero IP Address Status  ----------------------- 100.1.1.1 Polled

Check whether to register

 DCWS#show wireless ap failure status MAC Address  (*) Peer Managed IP Address Last Failure Type Age  ------------------ --------------------------------------------- 00-03-0f-30-a1-60 100.1.1.1 No Database Entry 0d:00:00:04

AP obtains AC list through DHCP option 43

The AP obtains the AC address through the Option43 option in DHCP

SW2 configuration (the above configuration will continue to be used)

 ip dhcp pool vlan100 Option 43 hex 01041E010102/This is the hexadecimal address, 0104 is the DCN fixed prefix 1E010102 is 30.1.1.2/

AC configuration

 wireless  no enable  no discovery ip-list 100.1.1.1 enable

View the address (AC address) in option43 obtained on the AP

 DCN-WLAN-AP# get managed-ap  Property Value -------------------------------------- mode up managed-type 0 ap-state down switch-address-1  switch-address-2  switch-address-3  switch-address-4  switch-ipv6-address-1  switch-ipv6-address-2  switch-ipv6-address-3  switch-ipv6-address-4  Dhcp-switch-address-1 30.1.1.2/option43 address obtained from DHCP/

If you cannot register, please restart the AP and SW2

AP static discovery AC

AP configuration (The above configuration continues to be used)

 DCN-WLAN-AP# set managed-ap switch-address-1 30.1.1.2 DCN-WLAN AP # get managed ap/View the configured static AC address/ Property Value -------------------------------------- mode up managed-type 0 ap-state down switch-address-1 30.1.1.2

SW2 Configuration

 ip dhcp pool vlan100 no option 43

AC configuration

 wireless  no enable  enable

If unable to register, please restart AC, SW2 and AP