Nortel Networks 5530, 5520, 5510 manual Overview Ethernet Routing Switch 5500 QoS and Filtering

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Filters and QoS Configuration for ERS 5500
Technical Configuration Guide	v2.0	NN48500-559

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

					Classifier

	Port

	Port

	Port		Counters/
	Port					Meter
Role Combinations


	Port
	Port					Marker
						Marker


(ingress port group)			Statistics			Dropper


						r
						Redirecto
						Actions

Figure 1: QoS System Diagram

Role Combination

Queue

Queue

Queue

Queue

Egress ports

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

o Assumes that all traffic coming into the port is originating from a trusted source. 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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Contents Ethernet Routing Switch NN48500-559 Abstract Table of Contents List of Tables List of FiguresText Document UpdatesSymbols ConventionsOverview Ethernet Routing Switch 5500 QoS and Filtering ƒ Layer 2 Classifier Elements ClassificationUntrusted Ports Unrestricted PortsStatistics Actions SupportedQoS Flow Chart Overall Classification Functionality Filter FunctionalityClassifier Block Functionality 7, 15, 31, 63 255, 511, 1025 4095, 8191 32762, or Min = Port Range FunctionalityPolicies Default Policy Drop ActionNN48500-559 5520-24T-PWRconfig#default qos agent buffer 5520-24T-PWRconfig#qos agent buffer large maximum regularQueue Sets Egress CoS Queuing Ethernet Routing Switch 5500 Egress CoS QueuingCoS 5520-24T-PWRconfig#qos agent queue set 5520-24T-PWRconfig#show qos queue-set-assignment5520-24T-PWRconfig#qos agent reset-default 5520-24T-PWRconfig#default qos agent queue-setEgress Queue Recommendations Bucket Size Traffic Meter and ShapingParameter Description Actual Bucket SizePolicing Traffic Actual Bucket Size in Bytes Actual size in bytes InterfaceExample Meter Bucket Size and Duration Interface ShaperBucket Size Max burst rate Committed rate Duration MSec 5530-24TFDconfig#show qos if-shaper port Hex Decimal Default Nortel Class of ServiceDefault Nortel CoS Markings BinaryConfig#qos ip-acl name 1..16 character string ? QoS Access Lists ACLACL Configuration IP-ACL ConfigurationConfig#qos l2-acl name 1..16 character string ? 2 L2-ACL ConfigurationACL-Assign Configuration ACL Configuration Example5530H-24TFD#show qos acl-assign Verification5530H-24TFD#show qos ip-acl 5530H-24TFD#show qos policy Changing ACL 5500config#no qos acl-assign5500config#no qos acl-assign 1 port 1/19 5500config#no qos ip-aclDhcp Snooping IP Security FeaturesDhcp Snooping Configuration Dynamic ARP Inspection ConfigurationIP Source Guard IP Source Guard ConfigurationBpdu Filtering Bpdu Filtering ConfigurationQoS Interface Applications QoS Applications Number of Classifiers Used FeatureARP Spoofing Configuration ExampleDhcp Snooping Dhcp Attacks10.3 DoS Bpdu Blocking ERS5500-48T#show qos if-group Configuration Steps Policy ConfigurationRole Combination ERS5500-48T#show qos if-assignIP Element ERS5500-48Tconfig#qos ip-element 1-64000?Classification Adding IP and L2 ElementAdding a Classifier Block Adding a ClassifierParameters and variables Description MetersAdd a New Policy Pre-defined Values Configuration ExamplesQoS Action Configure the IP elements Configuration Example 1 Traffic Meter Using Policies12.2.1 ERS5500 Configuration Using Policies Configure the Interface Role CombinationConfigure the Classifier Block Configure MetersERS5500 Create the classifier block Verify the Role Combination Configure the PolicyVerify Operations ERS5500 Create the policyName m1 Verify Classifier and Classifier Block ConfigurationERS5500-24T#show qos classifier-block Verify Policy Configuration Verify that the QoS Policy IP ACL, Dhcp Snooping, ARP Inspection, and Source Guard 12.3.1 ERS5500 ConfigurationERS5500 Add IP address to Vlan 700 and enable Ospf ERS5500 Enable ARP-Inspection for VLAN’s 110 Verify DHCP-Snooping ERS5500 Assign the IP-ACL’s to portsVID Verify ARP InspectionVerify IP Source Guard Verify ACL ConfigurationNN48500-559 NN48500-559 ERS5500-24T#show qos acl-assign TCP Port Range Configuration Example 3 Port Range Using ACL or PolicyConfigure the Policies Configuration Using PoliciesERS5500 Create IP elements for UDP port range ERS5500 Remark all other traffic to Bronze Configuration Using IP-ACL’sCreate Policy 12.5.1 ERS5500 Configuration Using PoliciesERS5500 Pass all other traffic with standard CoS 12.5.2 ERS5500 Configuration Using IP-ACL’sERS5500 Assign the L2-ACL’s to ports 12.6.1 ERS5500 Configuration Using Policies Configuration Example 5 L2 and L3 ClassificationERS5500 Add L2 elements for Vlan 110 Configure Classifier and Classifier BlocksDscp Mapping via Un-restricted Port Role 12.7.1 ERS5500 ConfigurationPolicy Configuration ACL ConfigurationID ID View the Queue AssignmentsEnable Shaping on Port Configuration Example 7 Interface ShapingVerify Shape Rate Configuration Reference Documentation Software BaselineContact us