Draytek Vigor2850 Series, Руководство пользователя

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Vigor2850 Series User’s Guide
264
PPP Authentication -
It specifies the PPP authentication
method for PPP/MP connections. Normally you can set it to
PAP/CHAP for better compatibility.
TCP Header Compression - VJ Compression
: It is used
for TCP/IP protocol header compression. Normally it is set
to Yes to improve bandwidth utilization.
Idle Timeout -
Because our IDSN link type is
Dial On
Demand
, the connection will be initiated only when
needed.
Bandwidth-On-Demand
(BOD) Setup
Bandwidth-On-Demand is for Multiple-Link PPP \(ML-PPP
or MP). The parameters are only applied when you set the
Link Type
to
Dialup BOD
. The ISDN usually use one B
channel to access the Internet or remote network when you
choose the Dialup BOD link type. The router will use the
parameters here to decide on when you activate/drop the
additional B channel. Note that
cps
(characters-per-second)
measures the total link utilization.
High Water Mark and High Water Time -
These
parameters specify the situation in which the second
channel will be activated. With the first connected channel,
if its utilization exceeds the High Water Mark and such a
channel is being used over the High Water Time, the
additional channel will be activated. Thus, the total link
speed will be 128kbps (two B channels).
Low Water Mark and Low Water Time -
These
parameters specify the situation in which the second
channel will be dropped. In terms of the two B channels, if
their utilization is under the Low Water Mark and these two
channels are being used over the High Water Time, the
additional channel will be dropped. As a result, the total
link speed will be 64kbps (one B channel).
3
3
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1
1
4
4
W
W
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r
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l
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s
s
s
L
L
A
A
N
N
This function is used for “n” models only.
3
3
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1
1
4
4
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1
1
B
B
a
a
s
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C
C
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Over recent years, the market for wireless communications has enjoyed tremendous growth.
Wireless technology now reaches or is capable of reaching virtually every location on the
surface of the earth. Hundreds of millions of people exchange information every day via
wireless communication products. The Vigor “n” model, a.k.a. Vigor wireless router, is
designed for maximum flexibility and efficiency of a small office/home. Any authorized staff
can bring a built-in WLAN client PDA or notebook into a meeting room for conference
without laying a clot of LAN cable or drilling holes everywhere. Wireless LAN enables high
mobility so WLAN users can simultaneously access all LAN facilities just like on a wired
LAN as well as Internet access.