Diffserv Network Example; Activating Diffserv - ZyXEL Communications GS2210-8 User Manual

The DSCP value det erm ines t he PHB ( Per- Hop Behavior) , t hat each packet get s as it is forwarded
across t he DiffServ net work. Based on t he m arking rule different kinds of t raffic can be m arked for
different priorit ies of forwarding. Resources can t hen be allocat ed according t o t he DSCP values and
t he configured policies.

DiffServ Network Example

The following figure depict s a DiffServ net work consist ing of a group of direct ly connect ed DiffServ-
com pliant net work devices. The boundary node ( A in
( m arks wit h a DSCP value) t he incom ing packet s int o different t raffic flows ( Pla t inu m , Gold,
Silve r, Br onze ) based on t he configured m arking rules. A net work adm inist rat or can t hen apply
various t raffic policies t o t he t raffic flows. An exam ple t raffic policy, is t o give higher drop
precedence t o one t raffic flow over ot hers. I n our exam ple, packet s in t he Br on ze t raffic flow are
m ore likely t o be dropped when congest ion occurs t han t he packet s in t he Pla t inu m t raffic flow as
t hey m ove across t he DiffServ net work.
Figure 231 DiffServ Net work
P - Platinum
G - Gold
S - Silver
B - Bronze

39.2 Activating DiffServ

Act ivat e DiffServ t o apply m arking rules or I EEE 802.1p priorit y m apping on t he Swit ch.
Click I P Applica t ion > D iffSe r v in t he navigat ion panel t o display t he screen as shown.
Chapter 39 Differentiated Services
A
S G P P
P G S B
S
B
B
GS2210 Series User's Guide
Figure 231) in a DiffServ net work classifies
334
S G P P