AP Default Settings

AP Default Settings

Field	Description
AP Properties
LLDP	Determines if the AP broadcasts LLDP (Link Layer Discovery Protocol) information. This option is disabled by default. If SNMP (Simple Network Management Protocol) is enabled on the controller and you enable LLDP, the LLDP Confirmation dialog is displayed. Select one of the following: Proceed (not recommended) — Enables LLDP and keeps SNMP (Simple Network Management Protocol) running. Disable SNMP publishing, and proceed — Enables LLDP and disables SNMP. For more information on using SNMP, see the Extreme Networks ExtremeWireless Maintenance Guide
Announcement Interval	Determines how often the AP advertises its information by sending a new LLDP (Link Layer Discovery Protocol) packet when LLDP is enabled. This value is measured in seconds. If there are no changes to the AP configuration that impact the LLDP information, the AP sends a new LLDP packet according to this schedule. Note: Announcement Interval is not applicable on all AP models.
Announcement Delay	Determines the length of time that delays the new packet delivery. The announcement delay helps minimize LLDP (Link Layer Discovery Protocol) packet traffic when LLDP is enabled. This value is measured in seconds. If a change to the AP configuration occurs which impacts the LLDP information, the AP sends an updated LLDP packet. Note: Announcement Delay is not applicable on all AP models.
Time to Live	Determines the lifespan of the LLDP (Link Layer Discovery Protocol) packet. The Time to Live value is calculated as four times the Announcement Interval value. It cannot be directly edited. Note: Time to Live is not applicable on all AP models.
Country	Select the country of operation.
Radio Settings (Radio 1 and Radio 2)
Admin mode	Select On to enable this radio; Select Off to disable this radio.
Radio mode	Click the radio mode based on the type of AP. For more information on the available Radio modes, see Configuring Wireless AP Radio Properties. The available radio settings are dependent on the radio mode you select.
Channel Width	Click the channel width for the radio: 20 MHz — Click to allow 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 — Click to allow 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 — Click to allow 802.11ac clients to use the 80MHz frequency. Applies to AP38xx and AP39xx Radio 1 only. Auto — Click to automatically switch between 20 MHz, 40 MHz, and 80 MHz channel widths, depending on how busy the extension channels are.
RF Domain	Uniquely defines a group of APs that cooperate in managing RF channels and transmission power levels. The maximum length of the string is 16 characters.
Auto Tx Power Ctrl (ATPC)	Determines if the AP will automatically adapt transmission power signals. Click to either enable or disable ATPC from the Auto Tx Power Ctrl drop-down list. ATPC 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. Note: When enabled, Min Tx Power and Auto Tx Power Ctrl Adjust parameters can be edited, and the ATPC algorithm will adjust the AP power between Max Tx power and Min Tx Power. When disabled, the Max Tx Power selected value or the largest value in the compliance table will be the power level used by the radio, whichever is smaller.
Max Tx Power	Click the appropriate Tx power level from the Max TX Power drop-down list. The values in the Max TX Power drop-down are in dBm and will vary by AP. The values are governed by compliance requirements based on the country, radio, and antenna selected. Changing this value below the current Min Tx Power value will change the Min Tx Power to a level lower than the selected Max TX Power. Note: If Auto Tx Power Ctrl (ATPC) is disabled, the selected value or the largest value in the compliance table will be the power level used by the radio, whichever is smaller.
Min Tx Power	If ATPC is enabled, select the minimum Tx power level that is equal or lower than the maximum Tx power level. We recommend that you use the lowest supported value if you do not want to limit the potential Tx power level range that can be used. Note: The Min Tx Power setting cannot be set higher than the Max Tx Power setting.
Auto Tx Power Ctrl Adjust	The Auto Tx Power Ctrl Adj parameter is a correction parameter that allows you to manually adjust (up or down) the Tx Power calculated by the ATPC algorithm. If ATPC is enabled, click the Tx power level that can be used to adjust the ATPC power levels that the system has assigned. Extreme Networks recommends that use 0 dB during your initial configuration. If you have an RF plan that recommends Tx power levels for each AP, compare the actual Tx power levels your system has assigned against the recommended values your RF plan has provided. Use the Auto Tx Power Ctrl Adjust value to achieve the recommended values. Valid range is from -(Max Tx Power - Min Tx Power) dB to (Max Tx Power - Min Tx Power) dB.
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. All channels including weather radar — ACS scans all channels for an operating channel and returns all channels including weather radar channels. (This option is supported in Europe only). The weather channel includes 5600-5650MHz sub-bands and requires a 10-minute listening period before the AP can provide wireless service. During the listening period, the Current Channel field for DFS channels displays the value DFS Timeout, and the weather channel fields display DFS Timeout 10 minutes. 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.
Antenna Selection	Antenna Selection — Click the antenna, or antenna combination, you want to configure on this radio. When you configure 11n Wireless APs to use specific antennas, the transmission power is recalculated; the Current Tx Power Level value for the radio is automatically adjusted to reflect the recent antenna configuration. It takes approximately 30 seconds for the change to the Current Tx Power Level value to be reflected in the ExtremeWireless Assistant. Also, the radio is reset causing client connections on this radio to be lost. Note: Antenna Selection is not applicable on all AP models.
Advanced dialog – AP Properties
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	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	Click to Enable or Disable SSH to the AP.
Location-based Service	Click to Enable or Disable location-based service on this AP. Location-based service allows you to use this AP with an AeroScout or Ekahau solution.
Maintain client sessions in event of poll failure	Click to Enable or Disable (using a bridged at AP VNS) the AP remains active if a link loss with the controller occurs. This option is disabled by default.
Restart service in the absence of controller	Click to Enable or Disable (if using a bridged at AP VNS) to ensure the AP continues providing service if the AP‘s connection to the controller is lost. If this option is enabled, it allows the AP to start a bridged at AP VNS even in the absence of a controller.
Use broadcast for disassociation	Click to Enable or Disable if you want the AP to use broadcast disassociation when disconnecting all clients, instead of disassociating each client one by one. This affects the behavior of the AP under the following conditions: If the AP is preparing to reboot or to enter one of the special modes (DRM initial channel selection). If a BSSID is deactivated or removed on the AP. This option is disabled by default.
IP Multicast Assembly	Click to Enable or Disable multicast frames assembling for groups of APs using AP Multi-editing settings (for more information, see AP Multi-Edit Properties ).
Balanced Channel List Power:	This simplifies power settings such that they will 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.
Radio Settings
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.
RST/CTS	Type the packet size threshold, in bytes, above which the packet will be preceded by an RTS/CTS (Request to Send/Clear to Send) handshake. The default value is 2346, which means all packets are sent without RTS/CTS. Reduce this value only if necessary.
Frag. Threshold	Type the fragment size threshold, in bytes, above which the packets will be fragmented by the AP prior to transmission. The default value is 2346, which means all packets are sent un-fragmented.
Dynamic Channel Selection	Click one of the following: Monitor Mode — If traffic or noise levels exceed the configured DCS thresholds, an alarm is triggered and an information log is generated. Active Mode — If traffic or noise levels exceed the configured DCS thresholds, an alarm is triggered and an information log is generated. In addition, the AP ceases operating on the current channel and ACS automatically selects an alternate channel for the AP to operate on.
DCS Noise Threshold	Type the noise interference level, measured in dBm, after which ACS scans for a new operating channel for the AP if the threshold is exceeded.
DCS Channel Occupancy Threshold	Type the channel utilization level, measured as a percentage, after which ACS scans for a new operating channel for the AP if the threshold is exceeded.
DCS Update Period	Type the time, measured in minutes that determines the period during which the AP averages the DCS Noise Threshold and DCS Channel Occupancy Threshold measurements. If either one of these thresholds is exceeded, then the AP triggers ACS.
DCS Interference Event (appears if Dynamic Channel Selection is enabled)	Enable or disable the following DCS Events: 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	Click 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 Rate	Click a protection rate: 1, 2, 5.5, or 11 Mbps. The default and recommended setting is 11. Only reduce the rate if there are many 11b clients in the environment or if the deployment has areas with poor coverage. For example, rates lower than 11 Mbps are required to ensure coverage.
Protection Mode	Click a protection mode: None, Auto, or Always. The default and recommended setting is Auto. Click None if 11b APs and clients are not expected. Click Always if you expect many 11b-only clients.
Protection Type	Click a protection type, CTS Only or RTS CTS, 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.
Max % of non-unicast traffic per Beacon period	Enter 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. By restricting non-unicast traffic, you limit the impact of broadcasts and multicasts on overall system performance.
Optimized Multicast for power save	Click to optimize for power save.
Adaptable rate for Multicast	Click to enable adaptable rate capabilities.
Multicast to Unicast delivery	Click to set the Multicast to Unicast delivery method from the drop-down list.
Enhanced Rate Control
Min. Basic Rate	For each radio, click the minimum data rate that must be supported by all stations in a BSS: Click 1, 2, 5.5, or 11 Mbps for 11b and 11b+11g modes. Click 6, 12, or 24 Mbps for 11g-only mode. Click 6, 12, or 24 Mbps for 11a mode.
11n Settings
Protection Mode	Click a protection mode: None, Auto, or Always. The default and recommended setting is Auto. Click None if 11b APs and clients are not expected. Click Always if you expect many 11b-only clients.
Protection Type	Click a protection type, 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.
Extension Channel Busy Threshold	Type the extension channel threshold percentage, which if exceeded, disables transmissions on the extension channel (40 MHz).
Aggregate MSDUs	Click an aggregate MSDU mode: Enabled or Disabled. Aggregate MSDU increases the maximum frame transmission size.
Aggregate MPDUs	Click an aggregate MPDU mode: Enabled or Disabled. Aggregate MPDU provides a significant improvement in throughput.
Aggregate MPDU Max Length	Type the maximum length of the aggregate MPDU. The value range is 1024-65535 bytes.
Agg. MPDU Max # of Sub-frames	Type the maximum number of sub-frames of the aggregate MPDU. The value range is 2-64.
ADDBA Support	Click an ADDBA support mode: Enabled or Disabled. ADDBA, or 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	Click an LDPC mode: Enabled or Disabled. LDPC increases the reliability of the transmission resulting in a 2dB increased performance compared to traditional 11n coding.
STBC	Click an STBC mode: Enabled or Disabled. STBC is a simple open loop transmit diversity scheme. When enabled, STBC configuration is 2x1 (two spatial streams combine into one spatial stream). TXBF will override 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. Click a TXBF mode: 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.

Published May 2017prev | next

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