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User’s Manual of SGSW-24040 / 24240 Series
562
Provider switching:
This is also known as Q-in-Q switching. Ports connected to subscribers are VLAN unaware,
members of one VLAN, and set up with this unique Port VLAN ID. Ports connected to the service provider are VLAN
aware, members of multiple VLANs, and set up to tag all frames. Untagged frames received on a subscriber port are
forwarded to the provider port with a single VLAN tag. Tagged frames received on a subscriber port are forwarded to
the provider port with a double VLAN tag.
VLAN ID
VLAN ID is a 12-bit field specifying the VLAN to which the frame belongs.
Voice VLAN
voice quality.
W
WEP
ired
E
quivalent
P
rivacy. WEP is a deprecated algorithm to secure IEEE 802.11 wireless
networks. Wireless networks broadcast messages using radio, so are more susceptible to eavesdropping than wired
networks. When introduced in 1999, WEP was intended to provide confidentiality comparable to that of a traditional
wired network (Wikipedia).
WiFi
reless
Fi
delity. It is meant to be used generically when referring of any type of 802.11 network,
whether 802.11b, 802.11a, dual-band, etc. The term is promulgated by the Wi-Fi Alliance.
WPA
i-Fi
P
rotected
A
ccess. It was created in response to several serious weaknesses researchers
had found in the previous system , Wired Equivalent Privacy (WEP). WPA implements the majority of the IEEE 802.11i
standard, and was intended as an intermediate measure to take the place of WEP while 802.11i was prepared. WPA is
specifically designed to also work with pre-WPA wireless network interface cards (through firmware upgrades), but not
necessarily with first generation wireless access points. WPA2 implements the full standard, but will not work with
some older network cards (Wikipedia).
WPA-PSK
i-Fi
P
rotected
A
ccess -
P
re
S
hared
K
ey. WPA was designed to enhance the security of
wireless networks. There are two flavors of WPA: enterprise and personal. Enterprise is meant for use with an IEEE
802.1X authentication server, which distributes different keys to each user. Personal WPA utilizes less scalable
'pre-shared key' (PSK) mode, where every allowed computer is given the same passphrase. In PSK mode, security
depends on the strength and secrecy of the passphrase. The design of WPA is based on a Draft 3 of the IEEE 802.11i
standard (Wikipedia)
Содержание GSW-24040R
Страница 42: ...User s Manual of SGSW 24040 24240 Series 42 Figure 2 13 SGSW 24040 24040R Series Stack Ports ...
Страница 62: ...User s Manual of SGSW 24040 24240 Series 62 Figure 4 1 5 SGSW Managed Switch Main Functions Menu ...
Страница 142: ...User s Manual of SGSW 24040 24240 Series 142 Figure 4 6 10 Port 1 Port 6 VLAN Configuration ...
Страница 199: ...User s Manual of SGSW 24040 24240 Series 199 Figure 4 9 14 Voice VLAN Configuration page screenshot ...
Страница 223: ...User s Manual of SGSW 24040 24240 Series 223 Figure 4 11 4 Network Access Server Configuration page screenshot ...
Страница 260: ...User s Manual of SGSW 24040 24240 Series 260 Figure 4 12 1 Port Limit Control Configuration Overview page screenshot ...
Страница 452: ...User s Manual of SGSW 24040 24240 Series 452 Example Show RADIUS statistics SWITCH security aaa statistics ...
Страница 474: ...User s Manual of SGSW 24040 24240 Series 474 Parameters vid VLAN ID 1 4095 Default Setting disable ...
Страница 510: ...User s Manual of SGSW 24040 24240 Series 510 Example Enable the mirror mode for port 1 4 SWITCH mirror mode 1 4 enable ...