The advantage of setting a high MAC notification interval is that the amount of network traffic is reduced because updates are sent less frequently. The advantage of setting a low MAC notification interval is that the network management system is better synchronized with the switch. MAC notification is disabled by default. When a switch learns or unlearns a MAC address, SNMP notifications can be sent to the network management system at regular intervals to record the addition or removal of the MAC address.
You need to perform this procedure to enable MAC notification. Perform this procedure only if MAC notification was previously enabled on your switch. The default MAC notification interval is 30 seconds. The procedure to change the MAC notification interval to a different interval is identical to the procedure to enable MAC notification on the switch with a nondefault value for the MAC notification interval.
MAC Notification is disabled by default.
FortiSwitch port features
Verify that MAC notification is enabled or disabled, and that the MAC notification interval is set to the specified value. This event should be used to create a WDS interface that is bound to the remote station and usually plumbed into a bridge. Once the WDS interface is up and running 4-address traffic then logically flows through that interface.
When DWDS is enabled on a station, traffic with a destination ad- dress different from the peer station are encapsulated in a 4-ad- dress frame and transmitted to the peer. All 4-address traffic uses the security information of the stations e. A station is associated using The DWDS implementation guards against layer 2 routing loops of multicast traffic. Fast Frames are an encapsula- tion technique by which two This can noticeably improve throughput but requires that the receiving station understand how to decapsulate the frame. Fast frame use is negotiated using the Atheros By default, use of fast frames is enabled if the device is capable.
To explicitly dis- able fast frames, use -ff.
Manual:Layer2 misconfiguration
The length argument is the frame size in bytes and must be in the range to Setting length to , any , or - disables transmit fragmentation. Not all adapters honor the fragmentation threshold. By de- fault, the SSID is included in beacon frames and undirected probe request frames are answered.
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To re-enable the broadcast of the SSID etc. Stations negotiate use of these facilities, termed HT20 and HT40, when they associate. To disable all use of To dis- able use of HT20 e. To disable use of HT40 use -ht For example, if a station associates to an 11n-capable access point it controls whether the station uses legacy operation, HT20, or HT When an 11n-capable device is setup as an access point and Auto Channel Selection is used to locate a channel to operate on, HT configuration controls whether legacy, HT20, or HT40 operation is setup on the selected channel.
If a fixed channel is specified for a station then HT configura- tion can be given as part of the channel specification; e.
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Some vendors implemented 11n support to older specifications that will not interoperate with a purely 11n-compliant station. In particular the information elements included in management frames for old devices are different. When compatibility support is enabled both standard and compati- ble data will be provided. To disable compatibility support use -htcompat. Tech- nique names are case insensitive. When operating as an access point the If no response is received then the station is deauthenticated.
Applications that prefer to handle this work can disable this facility by us- ing -inact. The location is also advertised in beacon and probe response frames when See also outdoor , anywhere , country , and regdomain. See the description of list chan for more information. Channels are shown with their IEEE channel number, equivalent frequency, and usage modes. This means a station is not permitted to transmit on the channel until it identifies the channel is being used for By default a com- pacted list of channels is displayed; if the -v option is speci- fied then all channels are shown.
This information may be updated automatically by the adapter with a scan request or through background scanning. De- pending on the capabilities of the stations the following flags can be included in the output: A Authorized. Indicates that the station is op- erating in an H High Throughput HT.
Indicates that the station is using HT transmit rates. P Power Save.
CONTACT SUPPORT
Indicates that the station is operating in power save mode. Q Quality of Service QoS. Indicates that the station is us- ing QoS encapsulation for data frame. QoS encapsulation is enabled only when WME mode is enabled. S Short Preamble. Indicates that the station is doing short preamble to optionally improve throughput performance with Indicates that the station associated using TSN; see also tsn below.
Indicates that the station as- sociated using WPS. By default interesting information elements captured from the neighboring stations are displayed at the end of each row. If the -v flag is used all the information elements and their contents will be shown. Specifying the -v flag also enables display of long SSIDs. The list ap command is another way of requesting this in- formation.
When operating in ad-hoc mode display sta- tions identified as neighbors in the IBSS. When operating in mesh mode display stations identified as neighbors in the MBSS. When operating in station mode display the access point. Capa- bilities advertised by the stations are described under the scan request. Depending on the capabilities of the stations the fol- lowing flags can be included in the output: A Authorized.
By default information elements received from associated stations are displayed in a short form; the -v flag causes this informa- tion to be displayed symbolically. When WME mode is enabled for an adaptor this information will be displayed with the regular status; this command is mostly useful for examining parameters when WME mode is disabled.
See the description of the wme directive for information on the vari- ous parameters. The default setting is 6 but drivers may override this with a value they choose. This rate should be valid for the current operating condi- tions; if an invalid rate is specified drivers are free to chose an appropriate rate.
See also anywhere , country , indoor , and regdomain. When operating as a client, the sta- tion will conserve power by periodically turning off the radio and listening for messages from the access point telling it there are packets waiting. The station must then retrieve the packets. Not all devices support power save operation as a client.
Use -powersave to disable powersave operation when operating as a client. By default the max powersave sleep time is TU's. Technique names are case insensitive.
VLAN Network Segmentation and Security- Chapter 5
Not all de- vices support cts as a protection technique. To allow both 11g and 11b-only stations to associate, use -pureg.
To allow both HT and legacy stations to asso- ciate, use -puren. In particular the set of available channels, how the wireless device will operation on the channels, and the maximum transmit power that can be used on a channel are defined by this setting. See also country , indoor , outdoor , and anywhere. Note that RIFS must be supported by both the station and access point for it to be used.
To disable RIFS use -rifs.