Overview: Ethernet Routing Switch 5500 Qos And Filtering; Figure 1: Qos System Diagram - Nortel 5530 Engineering Manual

Filters and QoS Configuration for ERS 5500
Technical Configuration Guide
1. Overview: Ethernet Routing Switch 5500
QoS and Filtering
The Ethernet Routing Switch 5500 supports QoS and filter configuration via WEB, CLI, and
Device Manager with no support for COPS at this time. As shown in the diagram below, the
following functional components provide QoS support on the Ethernet Routing Switch 5500:
•
Role Combination on the ingress port
•
Classify traffic at either Layer 2 or at a Layer 3/4 level
•
Take action by dropping, marking, redirecting, or metering (policing) traffic
•
Send traffic to appropriate egress queue
Port
Port
Port
Port
Role Combinations
(ingress port group)
Role Combination
A role combination is a grouping of one or more ports, capabilities, and interface classifications
against which a policy is applied. The capabilities presently supported on the Ethernet Routing
Switch 5500 include ingress IP and Layer 2 classification. The Ethernet Routing Switch 5500
supports the following interface classes that can be applied to zero, one, or many interfaces:
•
Trusted Ports
Assumes that all traffic coming into the port is originating from a trusted source.
o
Therefore, the DSCP field of any traffic that enters the Ethernet Routing Switch 5500
from a Trusted Port is not remarked by default. However, a policy can still be applied
to a trusted port to remark if required. Note that only the 802.1p user priority value
associated with 'well-known' DSCP values are remapped by the default trusted
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v2.0
Classifier
Meter
Marker
Dropper
Redirecto
r
Actions

Figure 1: QoS System Diagram

External Distribution
NN48500-559
Queue
Queue
Queue
Queue
Egress
ports
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