Nokia 7705 - Page 73

Quality of Service Guide QoS and QoS Policies
Edition: 01 3HE 11014 AAAC TQZZA 73
3.2.1.1.2 Discard Probability of Classified Traffic
Once the traffic is mapped against a forwarding class, the discard probability for the
traffic can be configured as high or low priority at ingress. Once the traffic is further
classified as high or low priority, different congestion management schemes could
be applied based on this priority. For example WRED curves can then be run against
the high- and low-priority traffic separately, as described in Slope Policies (WRED
and RED).
Table 7 Access Ingress Traffic Classification for SAPs per Service Type
Access Type (SAP) Service Type
TDM
PW
ATM
PW
FR
PW
HDLC
PW
Ethernet
PW
IP PW VPLS VPRN
TDM port 1 FC
Channel group 1 FC
ATM virtual
connection identifier
1 FC 1 FC
FR 1 FC DSCP, up
to 8 FCs
HDLC 1 FC
PPP / MLPPP DSCP, up
to 8 FCs
DSCP, up
to 8 FCs
cHDLC DSCP, up
to 8 FCs
Ethernet port DSCP, up
to 8 FCs
DSCP, up
to 8 FCs
DSCP, up
to 8 FCs
DSCP, up
to 8 FCs
Dot1q encapsulation Dot1p or
DSCP, up
to 8 FCs
Dot1p or
DSCP, up
to 8 FCs
Dot1p or
DSCP, up
to 8 FCs
Dot1p or
DSCP, up
to 8 FCs
QinQ encapsulation Dot1p or
DSCP, up
to 8 FCs
Dot1p or
DSCP, up
to 8 FCs
Dot1p or
DSCP, up
to 8 FCs
Dot1p or
DSCP, up
to 8 FCs