Справочник Пользователя для ZyXEL Communications B-2000
ZyAIR B-2000 Wireless LAN Gateway with 4-Port Switch
3-16
Internet Access
Table 3-6 Wireless LAN Setup Field Description
FIELD DESCRIPTION
EXMAPLE
ESSID
The ESSID (Extended Service Set IDentity) identifies the AP the wireless client
is to associate to. Wireless clients associating to the AP must have the same
ESSID. Enter a descriptive name up to 32 printable 7-bit ASCII characters.
is to associate to. Wireless clients associating to the AP must have the same
ESSID. Enter a descriptive name up to 32 printable 7-bit ASCII characters.
Wireless
Hide ESSID
Press [SPACE BAR] and select Yes to hide the ESSID in the outgoing beacon
frame so a station cannot obtain the ESSID through passive scanning.
frame so a station cannot obtain the ESSID through passive scanning.
No
Channel ID
Press [SPACE BAR] to select a channel. This allows you to set the operating
frequency/channel depending on your particular region.
Possible choices are CH01 2412MHz, CH02 2417MHz, CH03 2422MHz,
CH04 2427MHz, CH05 2432MHz, CH06 2437MHz, CH07 2442MHz, CH08
2447MHz, CH09 2452MHz, CH10 2457MHz or CH11 2462MHz.
frequency/channel depending on your particular region.
Possible choices are CH01 2412MHz, CH02 2417MHz, CH03 2422MHz,
CH04 2427MHz, CH05 2432MHz, CH06 2437MHz, CH07 2442MHz, CH08
2447MHz, CH09 2452MHz, CH10 2457MHz or CH11 2462MHz.
CH01
2412MHz
RTS
Threshold
Threshold
RTS (Request To Send) threshold (number of bytes) enables RTS/CTS
handshake. Data with its frame size larger than this value will perform the
RTS/CTS handshake. Setting this attribute to be larger than the maximum
MSDU (MAC Service Data Unit) size turns off the RTS/CTS handshake.
Setting this attribute to zero turns on the RTS/CTS handshake. Enter a value
between 0 and 2432.
handshake. Data with its frame size larger than this value will perform the
RTS/CTS handshake. Setting this attribute to be larger than the maximum
MSDU (MAC Service Data Unit) size turns off the RTS/CTS handshake.
Setting this attribute to zero turns on the RTS/CTS handshake. Enter a value
between 0 and 2432.
2432
Fragment
Threshold
Threshold
The threshold (number of bytes) for the fragmentation boundary for directed
messages. It is the maximum data fragment size that can be sent. Enter a
value between 256 and 2432.
messages. It is the maximum data fragment size that can be sent. Enter a
value between 256 and 2432.
2432
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to
cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
For WEP key configuration, refer to section on WEP Data Encryption.
3.11.3 Roaming
A wireless station is a computer with an IEEE 802.11b compliant wireless Network Interface Card (NIC).
An Access Point (AP) acts as a bridge between the wireless and wired networks. An AP creates its own
wireless coverage area. A wireless station can associate with a particular access point only if it is within the
access point’s coverage area.
An Access Point (AP) acts as a bridge between the wireless and wired networks. An AP creates its own
wireless coverage area. A wireless station can associate with a particular access point only if it is within the
access point’s coverage area.
In a network environment with multiple access points, wireless stations are able to switch from one access
point to another as they move between the coverage areas. This is roaming. As the wireless station moves
from place to place, it is responsible for choosing the most appropriate access point depending on the signal
strength, network utilization or other factors.
point to another as they move between the coverage areas. This is roaming. As the wireless station moves
from place to place, it is responsible for choosing the most appropriate access point depending on the signal
strength, network utilization or other factors.
The roaming feature on the access points allows the access points to relay information about the wireless
stations to each other. When a wireless station moves from a coverage area to another, it scans and uses the
stations to each other. When a wireless station moves from a coverage area to another, it scans and uses the