AP Multi-Edit Properties

When you use the Multi-edit function, only options that are explicitly modified are changed by the update. The APs shown in the Wireless APs list are supported by various versions of software. Only attributes that are common between software versions are available for multi-edit. Setting an attribute that does not apply to an AP does not cause an abort of the multi-edit operation.

Multi-Edit AP Properties

Field	Description
AP Properties
Location	Define the location of the AP. When a client roams to an AP with a different location, Area Notification is triggered. The Area Notification feature is designed to track client locations within pre-defined areas using either the Location Engine (for more information, see Configuring the Location Engine) or the AP Location field. When the clients change areas, a notification is sent. Location functionality on the AP is useful when access to Extreme Management Center OneView is not available.
Zone	Zone is a label that can be sent to a RADIUS server in place of an AP BSSID in the called-station-id attribute. It can be easier to base authorization decisions on the zone label rather than on the BSSID. Each AP can have its own Zone label although it is often useful to assign the same Zone to multiple APs.
Poll Timeout	Type the timeout value, in seconds. The AP uses this value to trigger re-establishing the link with the Controller if the AP does not get an answer to its polling. The default value is 10 seconds. Note: If you are configuring session availability, the Poll Timeout value should be 1.5 to 2 times of Detect link failure value on AP Properties screen. For more information, see Session Availability.
Secure Tunnel	This feature, when enabled, provides encryption, authentication, and key management between the AP and/or controllers. Select the desired Secure Tunnel mode from the drop-down list: Disabled — Secure Tunnel is turned off and no traffic is encrypted. All SFTP/SSH/TFTP traffic works normally. Encrypt control traffic between AP & Controller — An IPSEC tunnel is established from the AP to the controller and all SFTP/SSH/TFTP/WASSP control traffic is encrypted. The AP skips the registration and authentication phases and when selected, the Secure Tunnel Lifetime feature can be configured. Encrypt control and data traffic between AP & Controller — This mode only benefits routed/bridged@Controller Topologies. An IPSEC tunnel is established from the AP to the controller and all SFTP/SSH/TFTP/WASSP control and data traffic is encrypted. The AP skips the registration and authentication phases, and when selected, the Secure Tunnel Lifetime feature can be configured. Note: This option is not available for AP3805 models. Debug mode — An IPSEC tunnel is established from the AP to the controller, no traffic is encrypted, and all SFTP/SSH/TFTP traffic works normally. The AP skips the registration and authentication phases and when selected, the Secure Tunnel Lifetime feature can be configured. Note: Changing a Secure Tunnel mode will automatically disconnect and reconnect the AP.
Secure Tunnel Lifetime (hours)	Enter an interval (in hours) at which time the keys of the IPSEC tunnel are renegotiated. Note: Changing the Secure Tunnel Lifetime setting will not cause any AP disruption.
Remote Access	Determines if the AP can be accessed remotely.
Location-based Service	Enable or disable third-party location based services on this AP. ExtremeWireless supports the following third-party services: AeroScout Ekahau Centrak
Maintain client session in event of poll failure	Determines if the AP remains active when a link loss with the controller occurs. Select this option when using a bridged at AP VNS. This option is enabled by default.
Restart service in the absence of controller	Determines if the AP‘s radios continue providing service when the AP‘s connection to the controller is lost. Select this option when using a bridged at AP VNS. When this option is enabled, the AP starts a bridged at AP VNS in the absence of a controller.
Use broadcast for disassociation	Determines if the AP uses broadcast disassociation when disconnecting all clients, instead of disassociating each client one by one. This setting affects the behavior of the AP when the AP is preparing to reboot or preparing to enter one of the special modes (DRM initial channel selection). and when a BSSID is deactivated or removed on the AP. This option is disabled by default.
LLDP	Determines if the AP broadcasts Link Layer Discovery Protocol information. This option is disabled by default. If SNMP is enabled on the controller and you enable LLDP, the LLDP Confirmation dialog is displayed. Select one of the following: Proceed (not recommended) — Select this option to enable LLDP and keep SNMP running. Disable SNMP publishing, and proceed — Select this option to enable LLDP and disable SNMP. For more information on enabling SNMP, see the ExtremeWireless Maintenance Guide.
Multicast prioritized as voice	Ensures that multicast data has the highest priority in the wireless network. Prioritizes multicast data to the level of voice data. This setting must be enabled when deploying healthcare patient monitoring devices.
IP Multicast Assembly	Determines if IP Multicast Assembly runs on the wireless AP. If enabled, IP Multicast Assembly joins together fragmented multicast data packets that are too large to fit the MTU size of the tunnel header. This feature is disabled by default.
Balanced Channel List Power	Simplify power settings so settings function across all channels in the channel plan.
LED	Select the desired LED pattern from the drop-down list. Options include: Off, WDS Signal Strength, Identify, and Normal.
Country	Indicates the country of operation. The antenna you select determines the available channel list and the maximum transmitting power for the country in which the AP is deployed.
Antennas	The Professional Install option is only available when an AP model with external antennas is selected. The fields and corresponding antenna value options that appear on the Professional Install dialog depend on the selected AP and the antenna models that are available. Select and antenna for each available port. Choose the desired attenuation for each radio from the drop-down list. Selectable range is from 0 to 30 dBI.
Radio Settings
Admin Mode	Determines if the radio is on or off. Select On to enable the radio. Select Off to disable the radio.
Radio Mode	Select the radio mode based on the type of AP. Available radio settings are dependent on the selected radio mode.
Channel Width	Determines the channel width for the radio. Valid values are: 20 MHz — Allows 802.11n clients to use the primary channel (20 MHz) and non-802.11n clients, beacons, and multicasts to use the 802.11b/g radio protocols. 40 MHz — Allows 802.11n clients that support the 40 MHz frequency to use 40 MHz, 20 MHz, or the 802.11b/g radio protocols. 802.11n clients that do not support the 40 MHz frequency can use 20 MHz or the 802.11b/g radio protocols and non-802.11n clients, beacons, and multicasts use the 802.11b/g radio protocols. 80 MHz — Allows 802.11ac clients to use the 80MHz frequency. Applies to AP38xx and AP39xx Radio 1 only. 80 MHz — Allows 802.11ac clients to use the 80MHz frequency. Applies to AP38xx and AP39xx Radio 1 only. Auto — Automatically switches between 20 MHz, 40 MHz, and 80 MHz channel widths, depending on how busy the extension channels are.
DTIM	Type the desired DTIM (Delivery Traffic Indication Message) period — the number of beacon intervals between two DTIM beacons. To ensure the best client power savings, use a large number. Use a small number to minimize broadcast and multicast delay. The default value is 5.
Beacon Period	Defines the time, in milliseconds, between beacon transmissions. The default value is 100 milliseconds.
RTS/CTS (Bytes)	(Request to Send/Clear to Send) handshake. Determines the maximum packet size, in bytes, that triggers a RTS/CTS handshake. The default value is 2346 (the maximum 802.11 frame size) which means all packets are sent without RTS/CTS. If the transmitted packet size is greater than the threshold value, the RTS/CTS handshake occurs. Otherwise, the data frame is sent immediately. Reduce this value only if necessary. Note: In order for RTS/CTS to take affect, the RTS threshold must be less than or equal to the Frag threshold.
Frag Threshold (Bytes)	Determines the maximum packet size, in bytes, that triggers packet fragmentation. The default value is 2346. At 2346, all packets are sent unfragmented. Any value above the frag threshold triggers packet fragmentation by the AP prior to transmission.
RF Domain	Defines a group of APs that cooperate in managing RF channels and transmission power levels. The maximum string length is 16 characters.
Channel	Select Auto to use Automatic Channel Selection. For more information, see Dynamic Radio Management (DRM).
Auto Tx Power Control	Determines if the AP automatically adapts transmission power signals according to the coverage provided by the AP. After a period of time, the system stabilizes itself based on the RF coverage of your wireless APs. When enabled, Min Tx Power and Auto Tx Power Ctrl Adjust parameters can be edited, and the ATPC algorithm adjusts the AP power between the Max Tx and Min Tx settings. When disabled, the radio uses the Max Tx Power value or the largest value in the compliance table,whichever is smaller.
Max Tx Power	Determines the maximum power level used by the radio in dBm. The values are governed by compliance requirements based on the country, radio, and antenna selected, and will vary by AP. Changing this value below the current Min Tx Power value will lower the Min Tx Power to a level lower than the selected Max TX Power. If Auto Tx Power Ctrl (ATPC) is disabled, the radio uses the selected value or the largest value in the compliance table as the power level, whichever is smaller.
Min Tx Power	Determines the minimum power level for the radio. Use the lowest supported value in order to not limit the potential Tx power level range that can be used. If ATPC is enabled, select the Min Tx power level that is equal or lower than the Max Tx power level. The Min Tx Power setting cannot be set higher than the Max Tx Power setting.
Auto Tx Ctrl Adjust	Determines if the AP automatically adapts transmission power signals according to the coverage provided by the AP. After a period of time, the system stabilizes itself based on the RF coverage of your wireless APs. When enabled, Min Tx Power and Auto Tx Power Ctrl Adjust parameters can be edited, and the ATPC algorithm adjusts the AP power between the Max Tx and Min Tx settings. When disabled, the radio uses the Max Tx Power value or the largest value in the compliance table,whichever is smaller.
Channel Plan	If ACS is enabled you can define a channel plan for the AP. Defining a channel plan allows you to control which channels are available for use during an ACS scan. For example, you may want to avoid using specific channels because of low power, regulatory domain, or radar interference. For 5 GHz Radio nodes, click one of the following: All channels — ACS scans all channels for an operating channel and returns both DFS and non-DFS channels, if available. All Non-DFS Channels — ACS scans all non-DFS channels for an operating channel. Custom — To configure individual channels from which the ACS will select an operating channel, click Configure. The Custom Channel Plan dialog displays. By default, all channels participate in the channel plan. Click the individual channels you want to include in the channel plan. To select contiguous channels, use the Shift key. To select multiple, non-contiguous channels in the list, use the CTRL key. Click OK to save the configuration. For 2.4 GHz Radio nodes, click one of the following: 3 Channel Plan — ACS scans the following channels: 1, 6, and 11 in North America, and 1, 7, and 13 in the rest of the world. 4 Channel Plan — ACS scans the following channels: 1, 4, 7, and 11 in North America, and 1, 5, 9, and 13 in the rest of the world. Auto — ACS scans the default channel plan channels: 1, 6, and 11 in North America, and 1, 5, 9, and 13 in the rest of the world. Custom — If you want to configure individual channels from which the ACS selects an operating channel, click Configure. The Add Channels dialog is displayed. Click the individual channels you want to add to the channel plan while pressing the CTRL key, and then click OK.
Dynamic Channel Selection	Determines behavior when traffic or noise levels exceed the configured DCS thresholds. Valid values are: Monitor Mode — An alarm is triggered and an information log is generated. Active Mode — An alarm is triggered, an information log is generated, the AP stops operating on the current channel,and ACS automatically selects an alternate channel for the AP to operate on.
DCS Noise Threshold	Defines the noise interference limit, measured in dBm. If the noise interface exceeds this threshold, ACS scans for a new operating channel for the AP.
DCS Channel Occupancy Threshold	Defines the channel utilization level, measured as a percentage. If the threshold is exceeded, ACS scans for a new operating channel for the AP.
DCS Update Period (Minutes)	Defines a period of time, in minutes, where the average values for DCS Noise and Channel Occupancy are measured. If the average value for either setting exceeds the defined threshold for that setting, then the AP triggers Automatic Channel Scan (ACS).
Dynamic Channel Selection (DCS) events	Indicates items that can affect DCS (Dynamic Channel Selection). Enable one or more events if they are part of the wireless network: Bluetooth Microwave Cordless Phone Constant Wave Video Bridge
Interference Wait Time	Length of the delay (in seconds) before logging an alarm. Default setting is 10 seconds.
Preamble	Select a preamble type for 11b-specific (CCK) rates: Short, or Long. Click Short if you are sure that there is no 11b APs or client in the vicinity of this AP. Click Long if compatibility with 11b clients is required.
Protection Mode	When data collides on a given channel, CTS (clear to send) protection determines which device transmits at a given time. Auto. The default and recommended setting. None. Select if 11b APs and clients are not expected. Always. Select if you expect many 11b-only clients.
Protection Rate	A CTS (Clear to Send) packet is always sent out at the MBR (Minimum Basic Rate) configured for the radio. Protection is used when the sending rate (to the client) is greater than the configured protection rate. For example,if the protection rate is 11Mbps it means that 802.11 protection is used.
Protection Type	Select a protection type: CTS (Clear to Send) Only. RTS (Request to Send) and CTS. Recommended when a 40 MHz or 80 MHz channel is used. This protects high throughput transmissions on extension channels from interference from non-11n APs and clients.
Min Basic Rate	Defines the minimum data rate that must be supported by all stations in a BSS (Base Station Subsystem): Select 1, 2, 5.5, or 11 Mbps for 11b and 11b+11g modes. Select 6, 12, or 24 Mbps for 11g-only mode. Select 6, 12, or 24 Mbps for 11a mode.
Probe Suppression	Used to remedy "sticky clients", that is clients that do not probe on other channels and remain associated to an AP when a better AP is available. Configure per radio (Enable/Disable and Threshold). Applies to AP37xx, AP38xx, and AP39xx series APs. Probe Suppression accomplishes the following: RSS threshold (Adjustable “Cell Size”) Reduces the number of Probe Responses. Prevents clients with RSS below the threshold from associating.
Force Disassociate	Field is available when Probe Suppression is enabled. This setting does the following: Disassociates “Sticky Clients” Occurs 5dBm below the suppression threshold. Prevents clients from re-associating to the AP. Encourages/Forces roaming to a better AP. Configure per radio (Enable/Disable).
RSS Threshold (dBm)	90 (Range of -50 to -100). Field is available when Probe Suppression is enabled.
Max % of non-unicast traffic per Beacon period	Defines the maximum percentage of time that the AP transmits non-unicast packets (broadcast and multicast traffic) for each configured Beacon Period. For each non-unicast packet transmitted, the system calculates the airtime used by each packet and drops all packets that exceed the configured maximum percentage. Restrict non-unicast traffic, to limit the impact of broadcasts and multicasts on overall system performance.
Optimized Multicast for power save	Enables several performance enhancements applicable to clients in power save mode. One of these enhancements converts multicast to unicast for power save clients when the ratio of active to power save clients is sufficiently large.
Adaptable rate for Multicast	Determines if the AP tracks the lowest unicast transmission speed of any station currently associated to the AP. Multicast frames are then forwarded at that speed or at the Minimum Basic Rate, whichever is higher.
Multicast to Unicast delivery	Determines if multicast packets are replaced by one unicast packet per destination station. Each unicast packet is transmitted at the highest speed the destination station will accept. Note: It is possible that some client devices will not handle frames properly when the L2 MAC is unicast and the L3 IP address is multicast in which case the "Multicast to Unicast Delivery" option should be disabled. Note: The AP converts a multicast frame to unicast frames only when it determines that it is more efficient to do so. With the exception of “Optimized Multicast for power save” these options can be enabled at any time without service disruption.
11n Radio Settings
Guard Interval	Ensures that individual transmissions do not interfere with one another. It is the space between the symbols being transmitted. Selecting Short increases throughput, but can increase interference. Selecting Long can increase overhead due to additional idle time. The wireless 802.11n AP provides a shorter guard interval, which increases channel throughput. Long guard periods reduce channel efficiency.
Protection Mode	When data collides on a given channel, CTS (clear to send) protection determines which device transmits at a given time. Auto. The default and recommended setting. None. Select if 11b APs and clients are not expected. Always. Select if you expect many 11b-only clients.
Protection Type	Select a protection type: CTS (Clear to Send) Only. RTS (Request to Send) and CTS. Recommended when a 40 MHz or 80 MHz channel is used. This protects high throughput transmissions on extension channels from interference from non-11n APs and clients.
Extension Channel Busy Threshold	CTS Only or RTS CTS, when a 40 MHz channel is used. This protects high throughput transmissions on extension channels from interference from non-11n APs and clients.
Aggregate MSDUs	Determines MAC Service Data Unit (MSDU) aggregation. Enable to increase the maximum frame transmission size.
Aggregate MPDUs	Determines MAC Protocol Data Unit (MPDU) aggregation. Enable to increase the maximum frame transmission size, providing a significant improvement in throughput.
Aggregate MPDU Max Length	Defines the maximum length of the MAC Protocol Data Unit (MPDU) aggregation. Valid values range from 1024-65535 bytes. For the 802.11ac radio (Radio 1 of the AP38xx), the range is 1024-1048575.
Agg. MPDU Max # of Sub-frames	Determines the maximum number of sub frames in the aggregate MAC Protocol Data Unit (MPDU). Valid value range is 2-64.
ADDBA Support	Block acknowledgement. Provides acknowledgement of a group of frames instead of a single frame. ADDBA Support must be enabled if Aggregate MPDU is enable.
LDPC	Increases the reliability of the transmission resulting in a 2dB increased performance compared to traditional 11n coding.
STBC	Space Time Block Coding. A simple open loop transmit diversity scheme. When enabled, STBC configuration is 2x1 (two spatial streams combined into one spatial stream). TXBF overrides STBC if both are enabled for single stream rates.
TXBF	Tx Beam Forming is a technique of re-aligning the transmitter multipath spatial streams phases in order to get better signal-to-noise ratio on the receiver side. For the AP37xx and AP38xx models, valid values are Enabled or Disabled. For the 39xx APs, this setting is only available on Radio1 and valid values are MU_MIMO and Disabled.
Static Configuration
EWC Search List	Defines the list of IP addresses that the AP is configured to try to connect to in the event that the current connection to the controller is lost.
Tunnel MTU	Maximum transmission unit. Determines the largest packet size than can be transmitted by an IP interface without the packet needing to be broken down into smaller units.
WLAN Assignments
WLAN Assignment Option	Determines action on the WLAN assignment list associated with one or more APs. Valid values are Clear WLAN List or Reconfigure WLAN List.

Published April 2017prev | next

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