Hp ProCurve 520wl Wireless Access Point Uživatelský manuál stáhnout pdf (Strana 10)

802.11b versus 802.11a networks

802.11b versus 802.11a networks802.11b versus 802.11a networks

feature list

feature listfeature list

feature

featureature

2.4 ghz

2.4 ghz2.4 ghz

(802.11b)

(802.11b)(802.11b)

5 ghz

5 ghz5 ghz

(802.11a)

(802.11a)(802.11a)

comments

commentscomments

802.11b versus 802.11a networks

The WL520 supports 802.11 wireless connectivity through the use of an 802.11a-compliant 5 GHz and 802.11b-compliant

2.4 GHz radio technology. The IEEE 802.11a standard adds support for a high-speed wireless physical layer in the 5 GHz

band using Orthogonal Frequency Division Multiplexing (OFDM). The standard requires support for data rates of 6, 12, 24,

and 54 Mbits/s. The WL520 unit supports the following data rates: 6, 9, 12, 18, 24, 36, 54 Mbits/s. The IEEE 802.11b

standard supports wireless physical layer in the 2.4 GHz band using Direct Sequence Spread Spectrum (DSSS). The standard

provides for data rates of 1, 2, 5.5, and 11 Mbits/s.

The WL520 device can be used with any combination of 802.11a and 802.11b radio cards. Note however, that only one

802.11a card with antenna adapter can be plugged into the WL520 unit at one time. You can have an 802.11a and an

802.11b card present in the WL520 device at the same time and 2.4 GHz and 5 GHz clients will be supported

simultaneously.

feature list

The IEEE standards that governs wireless communications are different for the 2.4 GHz band and the 5 GHz band. The table

below compares the software features supported for each type of card in the WL520 device:

feature

2.4 ghz

(802.11b)

5 ghz

(802.11a)

comments

Number of stations per BSS up to 250 up to 50

HTTP Server yes yes

Telnet / CLI yes yes

SNMP Agent yes yes

VLAN Support (2 User VLANs) yes yes

Emergency Reset to Default Configuration yes yes

DHCP Client yes yes

DHCP Server yes yes

TFTP yes yes

RADIUS Access Control yes yes

Fallback to Primary RADIUS Server

RADIUS Session Timeout

RADIUS Multiple MAC Address Formats yes yes

RADIUS DNS Host Name Support yes yes

RADIUS Start/Stop Accounting yes yes

802.1X (EAP-MD5, EAP-TLS and EAP-TTLS) yes yes

802.1d bridging yes yes

MAC Access Control Table yes yes

Protocol Filtering yes yes

Multicast/Broadcast Storm Filtering yes yes

Proxy ARP yes yes

Configuration Support for MAC Features yes yes

ICMP Echo Response yes yes

Hardware Watchdog Timer yes yes

Roaming yes yes

Link Integrity yes yes

Automatic Channel Select yes yes

WEP yes yes Key lengths supported for 802.11b: 64-bit and 128-bit

Key lengths supported for 802.11a: 64-bit, 128-bit, and 152-bit

(Note: Some products refer to 64-bit as “40-bit”, 128-bit as “104-

bit”, and 152-bit as “128-bit”.)

WEP Plus (Weak Key Avoidance) yes No client support for 802.11a

WDS Relay yes

Remote Link Test yes

Link Test Responder yes No client support for 802.11a

Medium Density Distribution yes

Distance between APs yes

Ultra High Density yes

Closed System yes

Interference Robustness yes

Load Balancing yes No client support for 802.11a

1-3

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 141 142

Komentáře k této Příručce

Žádné komentáře

Hp ProCurve 520wl Wireless Access Point Uživatelský manuál Strana 10

Komentáře k této Příručce

Související produkty a manuály pro Směrovače Hp ProCurve 520wl Wireless Access Point