A WLAN is a data-communications system that flexibly extends the functionality of a wired LAN. A WLAN links two or more computers or devices using spread-spectrum or Orthogonal Frequency Division Multiplexing (OFDM) modulation based technology. WLANs do not require lining up devices for line-of-sight transmission, and are thus, desirable for wireless networking. Roaming users can be handed off from one access point to another, like a cellular phone system. WLANs can therefore be configured around the needs of specific user groups, even when they are not in physical proximity.
WLANs can provide an abundance of services, including data communications (allowing mobile devices to access applications), e-mail, file, and print services or even specialty applications (such as guest access control and asset tracking).
Each WLAN configuration contains encryption, authentication and QoS policies and conditions for user connections. Connected access point radios transmit periodic beacons for each BSS. A beacon advertises the SSID, security requirements, supported data rates of the wireless network to enable clients to locate and connect to the WLAN.
WLANs are mapped to radios on each access point. A WLAN can be advertised from a single access point radio or can span multiple access points and radios. WLAN configurations can be defined to provide service to specific areas of a site. For example, a guest access WLAN may only be mapped to a 2.4 GHz radio in a lobby or conference room providing limited coverage, while a data WLAN is mapped to all 2.4 GHz and 5.0 GHz radios at the branch site to provide complete coverage.
wlan {<WLAN-NAME>|containing <WLAN-NAME>}
wlan {<WLAN-NAME>|containing <WLAN-NAME>}
| wlan <WLAN-NAME> | Configures a new WLAN
Note: The WLAN name
could be a logical representation of its coverage area (for example,
engineering, marketing etc.). The name cannot exceed 32
characters.
|
| containing <WLAN-NAME> | Optional. Configures an existing WLAN‘s settings
|
nx9500-6C8809(config)#wlan wlan1 nx9500-6C8809(config-wlan-wlan1)#? Wireless LAN Mode commands: 802.11v Configure 802.11v parameters accounting Configure how accounting records are created for this wlan acl Actions taken based on ACL configuration [ packet drop being one of them] answer-broadcast-probes Include this wlan when responding to probe requests that do not specify an SSID assoc-response Association response threshold association-list Configure the association list for the wlan authentication-type The authentication type of this WLAN bridging-mode Configure how packets to/from this wlan are bridged broadcast-dhcp Configure broadcast DHCP packet handling broadcast-ssid Advertise the SSID of the WLAN in beacons captive-portal-enforcement Enable captive-portal enforcement on the wlan client-access Enable client-access (normal data operations) on this wlan client-client-communication Allow switching of frames from one wireless client to another on this wlan client-load-balancing Configure load balancing of clients on this wlan controller-assisted-mobility Enable controller assisted mobility to determine wireless clients' VLAN assignment data-rates Specify the 802.11 rates to be supported on this wlan description Configure a description of the usage of this wlan downstream-group-addressed-forwarding Enable downstream group addressed forwarding of packets dpi Deep-Packet-Inspection (Application Assurance) dynamic-vlan-assignment Dynamic VLAN assignment configuration eap-types Configure client access based on eap-type used for authentication encryption-type Configure the encryption to use on this wlan enforce-dhcp Drop packets from Wireless Clients with static IP address fast-bss-transition Configure support for 802.11r Fast BSS Transition http-analyze Enable HTTP URL analysis on the wlan ip Internet Protocol (IP) ipv6 Internet Protocol version 6 (IPv6) kerberos Configure kerberos authentication parameters mac-authentication Configure mac-authentication related parameters no Negate a command or set its defaults nsight Nsight Server opendns OpenDNS related config for this wlan protected-mgmt-frames Protected Management Frames (IEEE 802.11w) related configuration proxy-arp-mode Configure handling of ARP requests with proxy-arp is enabled proxy-nd-mode Configure handling of IPv6 ND requests with proxy-nd is enabled qos-map Support the 802.11u QoS map element and frame radio-resource-measurement Configure support for 802.11k Radio Resource Measurement radius Configure RADIUS related parameters registration Enable dynamic registration of device (or) user relay-agent Configure dhcp relay agent info shutdown Shutdown this wlan ssid Configure the Service Set Identifier for this WLAN t5-client-isolation Isolate traffic among clients t5-security Configure encryption and authentication time-based-access Configure client access based on time use Set setting to use vlan Configure the vlan where traffic from this wlan is mapped vlan-pool-member Add a member vlan to the pool of vlans for the wlan (Note: configuration of a vlan-pool overrides the 'vlan' configuration) wep128 Configure WEP128 parameters wep64 Configure WEP64 parameters wing-extensions Enable support for WiNG-Specific extensions to 802.11 wireless-client Configure wireless-client specific parameters wpa-wpa2 Modify tkip-ccmp (wpa/wpa2) related parameters clrscr Clears the display screen commit Commit all changes made in this session do Run commands from Exec mode end End current mode and change to EXEC mode exit End current mode and down to previous mode help Description of the interactive help system revert Revert changes service Service Commands show Show running system information write Write running configuration to memory or terminal nx9500-6C8809(config-wlan-wlan1)#
The following example shows how to use the ‘containing‘ keyword to enter the configuration mode of an existing WLAN:
nx9500-6C8809(config)#wlan containing wlan1 nx9500-6C8809(config-wlan-{'containing': 'wlan1'})#
| no (global-config-mode) | Removes an existing WLAN from the system |