Interface QoS Commands
Page 168 7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
The behavior on hybrid ports is as follows:
• If sap-qos-marking is enabled, then the FC to dot1p values configured in the sap-egress policy is used
for remarking traffic sent out of SAP configured in L2 services. Traffic sent out of SAPs associated with
L3 services, B-SAPs configured in PBB B-VPLS service and network IP interface (that is, IP and
MPLS traffic sent out of network IP interface) is not marked.
• If sap-qos-marking is disabled, network port policy is used for marking all the traffic. It includes traffic
sent out of SAPs configured in L2 services, SAPs configured in L3 services, BSAPs configured in PBB
BVPLS service, and network IP interface (that is, IP and MPLS traffic sent out of network IP interface).
For MPLS traffic, only Dot1p bits are marked and for the rest use has an option to mark either dot1p or
DSCP bits. For more information, see the 7210 SAS-X,R6,R12 QoS guide.
NOTE: Packets belonging to SAPs configured in a L2 service will also have their DSCP values marked
when remarking is enabled on a port and DSCP marking values are configured. Hence, it is recommended to
use only dot1p marking, when SAPs belonging to both L3 VPN service and L2 VPN service are configured
on the port.
Default Refer to Default values for sap-qos-marking in access and hybrid port modes on page 167 for more
information.
Parameters enable — Keyword used to enable port based marking for all SAPs on an access port and hybrid port.
disable — Keyword used to disable port based marking for all SAPs on an access port and hybrid port.
scheduler-mode
Syntax scheduler-mode <fc-based | sap-based >
no scheduler-mode
Context config>port>ethernet>access>egress
Description Platforms Supported: 7210 SAS-X.
This command is used to specify the mode of the access egress port scheduler. It operates in the following
two modes :
• fc-based
• sap-based
In the "fc-based" mode the priority of all egress queues across all SAPs are considered to determine the next
queue to be scheduled.
In the "sap-based" mode the scheduler uses round-robin scheduling mechanism to schedule each of the
SAPs configured on a port. The scheduler considers the priority of all the egress queues in a SAP to
determine the next queue to be scheduled.
To use the SAP egress aggregate-rate-limit command the port scheduler mode must be set to 'sap-based'
using this command. For more information on the aggregate-rate-limit command, see 7210 SAS-X,R6,R12
Services guide.
Default fc-based
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