75
via priority queuing or bandwidth allocation, or by choosing dedicated routes for
specific traffic flows.
As displayed in following diagram, the IPV4 packet has a TOS filed. Diffserv
defines TOS field in IP packet headers referred to as DSCP. Hosts or routes that
pass traffic to a Diffserv-enabled network typically mark each transmitted packet
with an appropriate DSCP. The DSCP markings are used by Diffserv network
routers to appropriately classify packets and to apply particular queue handing or
scheduling behavior.
Layer 3 IPV4 packet
Versi
on/le
ngth
TOS
(1
word
)
leng
th
I
D
Offs
et
/mar
k
T
T
L
protoc
ol
Chec
k
sum
IP-S
A
IP-
DA
d
a
t
a
TOS filed-IP priority (TOS front 3 bit) or DSCP (front 6 bit)
7
6
5
4
3
2
1
0
IP priority
Undefined
DSCP
Flow control
For example, mark each transmitted ICMP packet which passes traffic to 0-35class
with an appropriate DSCP (CS1).
Содержание W3400V
Страница 1: ...W3400V Four port ADSL 2 Wireless Router User Manual ...
Страница 19: ...16 Step 7 Click Finish to complete the USB driver installation ...
Страница 26: ...23 Click Reset Statistics at the bottom to restore the values to zero and recount them ...
Страница 28: ...25 ...
Страница 51: ...48 Click Next and the following page appears In this page you can modify the service name ...
Страница 114: ...111 3 7 Management 3 7 1 Settings 3 7 1 1 Settings Backup Click Backup Settings to back up the DSL router configuration ...
Страница 123: ...120 3 7 7 Save Reboot Click Save Reboot to show the following interface Click Save Reboot to save and reboot the router ...
Страница 136: ...133 ...