Avaya Configuring Traffic Filters and Protocol Prioritization Manuale Utente

Configuring Traffic Filters andProtocol Prioritization Router Software Version 10.0Site Manager Software Version 4.0Part No. 112927 Rev. AJanuary 19

Configuring Traffic Filters and Protocol Prioritization6-85.Select Criteria➔Add; then select the criterion that you want to use to filter packets (Figu

Applying Inbound Traffic Filters6-9Figure 6-8. Add Range Window6.Specify the low and high values for the range you want to apply to the selected crite

Configuring Traffic Filters and Protocol Prioritization6-10Figure 6-9. Create Template Window with Criteria and Range Added8.Add additional ranges if

Applying Inbound Traffic Filters6-11 Figure 6-10. Actions List with New Action10.When you are finished adding actions to your template, click on OK.You

Configuring Traffic Filters and Protocol Prioritization6-12Customizing TemplatesThere are two ways to change a filter template:• Copy the existing temp

Applying Inbound Traffic Filters6-13Remember that it is a good idea to give your template a name that reflects its contents.5. Click on OK.You are retu

Configuring Traffic Filters and Protocol Prioritization6-14Table 6-1. Using the Edit Filter Template WindowTask Site Manager Instructions NotesAdd a

Applying Inbound Traffic Filters6-15Creating an Inbound FilterTo create an inbound traffic filter: 1. Display the Inbound Filters window for your select

Configuring Traffic Filters and Protocol Prioritization6-166.Click on OK.You are returned to the Traffic Filters window (Figure 6-13).Figure 6-13. New

Applying Inbound Traffic Filters6-17Editing an Inbound FilterAfter you apply a filter to an interface, you can edit its criteria, ranges, and actions.

xi Figures Figure 2-1. Protocol Prioritization Dequeuing ...2-2Figure 2-2. Bandwidth Alloca

Configuring Traffic Filters and Protocol Prioritization6-18Figure 6-14. Edit Filters Window

Applying Inbound Traffic Filters6-19Table 6-2. Using the Edit Filters WindowTask Site Manager Instructions NotesAdd a criterion1.Select Criteria➔Add;

Configuring Traffic Filters and Protocol Prioritization6-20Specifying User-Defined CriteriaIn addition to predefined criteria, the Edit Filters and Crea

Applying Inbound Traffic Filters6-212. Select the protocol-specific reference field.In this example, the choices are the MAC or Data Link header.3. Spec

Configuring Traffic Filters and Protocol Prioritization6-22Changing Filter PrecedenceYou can assign as many as 31 inbound traffic filters per protocol t

Applying Inbound Traffic Filters6-23To change the order of precedence:1. In the Traffic Filters window, select the filter whose precedence you want to c

Configuring Traffic Filters and Protocol Prioritization6-24Figure 6-19. Traffic Filters List (Reordered Precedence)Enabling or Disabling an Inbound Fil

Applying Inbound Traffic Filters6-25Figure 6-20. Traffic Filters Window2.Select the filter that you want to disable or re-enable in the filter scroll box

Configuring Traffic Filters and Protocol Prioritization6-26Deleting an Inbound FilterWhen you delete a filter, it affects only the interface from which

7-1Chapter 7Applying Outbound Traffic FiltersThis chapter shows how to use the Configuration Manager to configure outbound traffic filters. To apply inboun

xiiFigure 6-11. Copy Filter Template Window ...6-12Figure 6-12. Create Filter Window .

Configuring Traffic Filters and Protocol Prioritization7-2• Temporarily disable or enable a filter, described in “Enabling or Disabling an Outbound Fil

Applying Outbound Traffic Filters7-3Figure 7-1. Selecting the Priority/Outbound Filters WindowThe Priority/Outbound Filters window appears (Figure 7-2

Configuring Traffic Filters and Protocol Prioritization7-4Figure 7-2. Priority/Outbound Filters WindowPreparing Filter TemplatesThis section describes

Applying Outbound Traffic Filters7-5Creating a New TemplateTo add a filter to an interface, you do not always need to create a new template. Often, you

Configuring Traffic Filters and Protocol Prioritization7-6Figure 7-4. Create Priority/Outbound Template Window4.Enter a descriptive name for the templ

Applying Outbound Traffic Filters7-7Figure 7-5. Selecting Outbound Traffic Filter Criteria6.Select the protocol-specific criterion you want to add.Each

Configuring Traffic Filters and Protocol Prioritization7-8Figure 7-6. Add Range Window7.Specify the low and high values for the range you want to appl

Applying Outbound Traffic Filters7-9If you selected the Length action, go to “Specifying Prioritization Length.” For other actions, the Create Priorit

Configuring Traffic Filters and Protocol Prioritization7-10Specifying Prioritization LengthIf you select the Length action in the Create Priority/Outb

Applying Outbound Traffic Filters7-11 Parameter: Less Than or Equal Queue Default: Normal Options: High | Low | Normal Function: Specifies which queue

xiii Tables Table 1-1. Summary of Predefined Inbound Traffic Filter Criteria ...1-9Table 1-2. Summary of Predefined Outbound T

Configuring Traffic Filters and Protocol Prioritization7-12Customizing TemplatesThere are two ways to change a filter template:• Copy the existing temp

Applying Outbound Traffic Filters7-13Figure 7-9. Copy Filter Template Window4.Enter a name for the new template in the box provided.Remember that it i

Configuring Traffic Filters and Protocol Prioritization7-14Figure 7-10. Edit Priority/Outbound Template WindowYou can add or delete filter criteria, ra

Applying Outbound Traffic Filters7-154. Click on OK when you are finished editing the template.You return to the Filter Template Management window. You

Configuring Traffic Filters and Protocol Prioritization7-16Creating an Outbound FilterTo create a new filter, you apply a filter template to an interfac

Applying Outbound Traffic Filters7-17Figure 7-12. Create Filter Window3.If the correct interface is not already highlighted, select the interface.4. S

Configuring Traffic Filters and Protocol Prioritization7-18Editing an Outbound Filter After you apply a filter to an interface, you can edit its criter

Applying Outbound Traffic Filters7-19Figure 7-13. Edit Priority/Outbound Filters Window

Configuring Traffic Filters and Protocol Prioritization7-20Table 7-2. Using the Edit Priority/Outbound Filters WindowTask Site Manager Instructions N

Applying Outbound Traffic Filters7-21Changing Filter Precedence You can assign as many as 31 outbound traffic filters per protocol to each router interf

xivTable 7-2. Using the Edit Priority/Outbound Filters Window ...7-20Table A-1. Predefined Criteria, Ranges, and Acti

Configuring Traffic Filters and Protocol Prioritization7-22To change the order of precedence:1. In the Priority/Outbound Filters window (see Figure 7-

Applying Outbound Traffic Filters7-23Figure 7-16. Example of Outbound Filter Order ChangeEnabling or Disabling an Outbound FilterYou can disable and r

Configuring Traffic Filters and Protocol Prioritization7-24Deleting an Outbound FilterTo delete a priority or outbound filter from an interface:1. Disp

A-1Appendix AConfiguration Examples andImplementation NotesThis appendix contains examples, hints, reminders, and important notes you could have missed

Configuring Traffic Filters and Protocol PrioritizationA-2Dial Backup TrafficWhen configuring outbound filters or protocol prioritization on a synchronou

Configuration Examples and Implementation NotesA-3With a drop-all filter specified, higher-precedence accept filters create exceptions (or “holes”) in th

Configuring Traffic Filters and Protocol PrioritizationA-4Inbound Traffic Filter ExamplesThe first part of this section provides examples for creating p

Configuration Examples and Implementation NotesA-59. Click on Done.You are returned to the protocol-specific Traffic Filter window.10. Click on Create.1

Configuring Traffic Filters and Protocol PrioritizationA-6Examples with User-defined CriteriaSetting up user-defined criteria is similar to setting up p

Configuration Examples and Implementation NotesA-711. Click on OK.You are returned to the Filter Template Management window.12. Click on Done.You are

xv About This Guide Read this guide to learn how to customize Bay Networks router software to filter and prioritize inbound and outbound traffic. Config

Configuring Traffic Filters and Protocol PrioritizationA-8Protocol Prioritization ExamplesThis section provides summary examples for configuring protoc

Configuration Examples and Implementation NotesA-97. Select a queue action.Refer to Table A-3.8. Click on Done.The Priority/Outbound Filters window re

Configuring Traffic Filters and Protocol PrioritizationA-10Place SNA traffic in the high priority queueCriteria➔Add➔Data-link➔Source Routing➔DSAPNOTE:

Configuration Examples and Implementation NotesA-11Place Spanning Tree traffic in the high priority queueCriteria➔Add➔Data-link➔Source Routing➔DSAP | S

Index-1Aaccept filters, 1-6, A-2actions, traffic filter. See traffic filter actions.addingactionsinbound, 6-14, 6-19outbound, 7-15, 7-18, 7-20criteriainbou

Index-2IPIP Destination Address, 3-7IP Source Address, 3-7Protocol, 3-7TCP Destination Port, 3-7TCP Source Port, 3-7Type of Service, 3-7UDP Destinatio

Index-3disablinginbound traffic filters, 6-24outbound traffic filters, 7-23Discard Eligible Bit Low parameter, 2-22Discard Eligible Bit Normal parameter,

Index-4IICMP traffic, example, A-9InfoFACTS service, xviiiIPactions, 3-8criteria, 3-7 to 3-8outbound traffic filters, 4-4IP headeroutbound traffic filters,

Index-5precedenceoutbound traffic filters, 6-22, 7-21traffic filters, A-2predefined criteria, about, 1-8Prioritization Algorithm Type parameter, 2-21protoc

Configuring Traffic Filters and Protocol Prioritizationxvi Before You Begin Before using this guide, you must complete the following procedures: 1. I

Index-6TTCP Port criteria, 5-6Telnet traffic, prioritizing, A-11templates, about, 1-13 to 1-14templates, inbound traffic filterapplying to an interface,

Index-7Transparent Bridge. See Bridge.UUDP Port Criteria, 5-6user-defined criteriaabout, 1-8components of, 1-8inboundBridge, 3-4DECnet, 3-13DLSw, 3-15I

About This Guidexvii To purchase any of these support programs, including PhonePlus™ for 24-hour telephone technical support, call 1-800-2LANWAN. Out

Configuring Traffic Filters and Protocol Prioritizationxviii InfoFACTS InfoFACTS is the Bay Networks free 24-hour fax-on-demand service. This automat

About This Guidexix bold text Indicates text that you need to enter and command names in text. Example: Use the dinfo command. brackets ([ ]) Indic

4401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821 Copyright © 1988–1996 Bay Networks, Inc. All rights reserved. Pr

Configuring Traffic Filters and Protocol Prioritizationxx Acronyms ANSI American National Standards InstituteDLC Data Link ControlDLSw data link swit

1-1 Chapter 1Using Traffic Filters To help you understand and plan for traffic filter configurations on Bay Networks routers, this chapter describes • Ty

Configuring Traffic Filters and Protocol Prioritization1-2 Inbound Traffic Filters Inbound traffic filters act on packets coming in a router circuit (

Using Traffic Filters1-3 Outbound Traffic Filters Outbound traffic filters act on packets that the router sends out a specific interface to a local or wi

Configuring Traffic Filters and Protocol Prioritization1-4 Chapter 4 lists protocol-specific outbound filter criteria and actions. Chapter 7 explains h

Using Traffic Filters1-5 Site Manager also supports one to ten priority queues at the TCP level for DLSw traffic. Refer to Configuring DLSw Services

Configuring Traffic Filters and Protocol Prioritization1-6 Filtering Strategies This section suggests some ways you might use traffic filters in a netw

Using Traffic Filters1-7Combine FiltersYou can apply as many as 31 inbound and 31 outbound traffic filters on each router interface. As you add filters t

Configuring Traffic Filters and Protocol Prioritization1-8• The upper-level protocol header. Examples of protocol header types include:— IP and TCP —

Using Traffic Filters1-9Table 1-1. Summary of Predefined Inbound Traffic Filter CriteriaProtocol Predefined Inbound Filter CriteriaBridge(Four Data Link

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Configuring Traffic Filters and Protocol Prioritization1-10Table 1-2. Summary of Predefined Outbound Traffic Filter CriteriaHeader Protocol Predefined Ou

Using Traffic Filters1-11User-Defined CriteriaTo apply customized criteria that use fields that are not represented in a protocol’s predefined criteria,

Configuring Traffic Filters and Protocol Prioritization1-12ActionsThe filter action determines what happens to packets that match a filter criterion’s r

Using Traffic Filters1-13Using Filter TemplatesWhen you create traffic filters, it is important to understand the difference between a traffic filter temp

Configuring Traffic Filters and Protocol Prioritization1-14To create and use a filter template: 1. Name the template.It is a good idea to give each tem

2-1Chapter 2Using Circuit-level Protocol PrioritizationThis chapter describes circuit-level priority queuing on interfaces that support outbound traffi

Configuring Traffic Filters and Protocol Prioritization2-2The router automatically queues frames that do not match a traffic filter to the Normal queue.

Using Circuit-level Protocol Prioritization2-3By default, protocol prioritization uses the bandwidth allocation algorithm to send traffic to the transm

Configuring Traffic Filters and Protocol Prioritization2-4If there is no traffic in the normal-priority queue, the algorithm proceeds to Step 5.4. The

Using Circuit-level Protocol Prioritization2-5Figure 2-2. Bandwidth Allocation Dequeuing Algorithm

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Configuring Traffic Filters and Protocol Prioritization2-6Strict Dequeuing AlgorithmProtocol prioritization can also use the strict dequeuing algorith

Using Circuit-level Protocol Prioritization2-7 Figure 2-3. Strict Dequeuing Algorithm

Configuring Traffic Filters and Protocol Prioritization2-8Tuning Protocol PrioritizationProtocol prioritization defaults are designed to work well for

Using Circuit-level Protocol Prioritization2-9How you tune protocol prioritization depends on whether the bandwidth allocation or strict dequeuing alg

Configuring Traffic Filters and Protocol Prioritization2-10When you set the queue size, you assign buffers (which hold the packets) to each queue. A q

Using Circuit-level Protocol Prioritization2-11Figure 2-4. Priority Queue Statistics for the Queue Depth ExampleIn this case, you may choose to reconfi

Configuring Traffic Filters and Protocol Prioritization2-12LatencyLatency, or line delay, specifies how many normal- or low-priority bits the router ca

Using Circuit-level Protocol Prioritization2-13Enabling Protocol PrioritizationYou use the Configuration Manager to configure the high-, normal-, and lo

Configuring Traffic Filters and Protocol Prioritization2-143.Look for “Protocol Priority” in the Protocols scroll box.If Protocol Priority appears in

Using Circuit-level Protocol Prioritization2-15Editing Protocol Prioritization ParametersAny circuit to which you have added protocol prioritization u

v Contents About This Guide Audience ...

Configuring Traffic Filters and Protocol Prioritization2-16Figure 2-9. Edit Protocol Priority Interface Window (First Screen)To see additional paramet

Using Circuit-level Protocol Prioritization2-17Figure 2-10. Edit Protocol Priority Interface Window (Scrolled Screen)This window displays parameter va

Configuring Traffic Filters and Protocol Prioritization2-18Priority Interface Parameter DescriptionsUse the following descriptions as guidelines when

Using Circuit-level Protocol Prioritization2-19 Parameter: Normal Queue Size Default: 20 (200 for Frame Relay) Options: Any integer value Function: Sp

Configuring Traffic Filters and Protocol Prioritization2-20 Parameter: Max High Queue Latency Default: 250 milliseconds (ms) Range: 100 to 5000 ms Fun

Using Circuit-level Protocol Prioritization2-21 Parameter: Prioritization Algorithm Type Default: BANDWIDTH ALLOCATION Options: BANDWIDTH ALLOCATION |

Configuring Traffic Filters and Protocol Prioritization2-22 Parameter: Normal Queue Percent Bandwidth Default: 20 Range: 0 to 100 percent Function: If

Using Circuit-level Protocol Prioritization2-23 Parameter: Discard Eligible Bit Normal Default: DISABLE Options: ENABLE | DISABLE Function: Sets the F

3-1Chapter 3Inbound Traffic Filter Criteria and ActionsYou create inbound traffic filters from templates that consist of protocol-specific filter criteria,

viDrop or Accept Certain Traffic ...1-6Build a Firewall ...

Configuring Traffic Filters and Protocol Prioritization3-2Transparent Bridge Criteria and ActionsBridge filters are the most complex, because they supp

Inbound Traffic Filter Criteria and Actions3-3Figure 3-1. Headers of Encapsulation Methods Supported by Transparent Bridge FiltersPredefined Transparen

Configuring Traffic Filters and Protocol Prioritization3-4User-Defined Transparent Bridge CriteriaYou can create bridge traffic filters with user-defined

Inbound Traffic Filter Criteria and Actions3-5You can combine the Log action with any of the other actions. However, you should use Log only to record

Configuring Traffic Filters and Protocol Prioritization3-6Specifying a SRB Criterion RangeIf you create a filter that includes a Source or Destination

Inbound Traffic Filter Criteria and Actions3-7IP Criteria and ActionsYou filter inbound IP traffic based on specified bit patterns contained within the I

Configuring Traffic Filters and Protocol Prioritization3-8IP ActionsIn addition to the Accept, Drop, and Log actions common to all the protocols, IP s

Inbound Traffic Filter Criteria and Actions3-9• Forward to First Up Next Hop InterfaceEnsures traffic forwarding by specifying that any frame that matc

Configuring Traffic Filters and Protocol Prioritization3-10User-Defined IPX CriteriaIn addition to the predefined filter criteria, you can create traffic

Inbound Traffic Filter Criteria and Actions3-11User-Defined XNS CriteriaIn addition to the predefined filter criteria, you can create traffic filters with

viiUser-Defined Transparent Bridge Criteria ...3-4Transparent Bridge Actions ...

Configuring Traffic Filters and Protocol Prioritization3-12User-Defined OSI CriteriaIn addition to the predefined OSI filter criteria, you can create tra

Inbound Traffic Filter Criteria and Actions3-13User-Defined DECnet CriteriaIn addition to the predefined DECnet filter criteria, you can create traffic fil

Configuring Traffic Filters and Protocol Prioritization3-14Specifying VINES Address RangesYou can obtain a VINES server address from a sniffer trace,

Inbound Traffic Filter Criteria and Actions3-15DLSw Criteria and ActionsYou can filter inbound DLSw traffic based on specified bit patterns contained wit

Configuring Traffic Filters and Protocol Prioritization3-16LLC2 Criteria and ActionsYou can filter inbound LLC2 traffic based on specified bit patterns c

4-1Chapter 4Outbound Traffic Filter Criteria and ActionsYou create outbound traffic filters from templates that consist of protocol-specific filter criteri

Configuring Traffic Filters and Protocol Prioritization4-2This section lists the predefined Data Link and IP criteria for outbound traffic filters. Refer

Outbound Traffic Filter Criteria and Actions4-3Figure 4-1. Predefined Data Link Outbound Filter Criteria

Configuring Traffic Filters and Protocol Prioritization4-4Predefined IP CriteriaYou configure outbound filters for IP traffic based on the predefined crite

Outbound Traffic Filter Criteria and Actions4-5Figure 4-2. Predefined IP Outbound Filter CriteriaSpecifying Criteria Common to IP and Data Link Headers

viiiDLSw Actions ...3-15LLC2 Criteria and Acti

Configuring Traffic Filters and Protocol Prioritization4-6Reference Points for User-Defined CriteriaTo create a filter with a user-defined criterion, you

Outbound Traffic Filter Criteria and Actions4-7Figure 4-3. Data Link Reference Points in a Source Routing Packet Bridged over Bay Networks Proprietary

Configuring Traffic Filters and Protocol Prioritization4-8IP Reference PointsTable 4-4 defines the IP reference points, and Figure 4-5 shows an example

5-1Chapter 5Specifying Common Criterion RangesFor every inbound or outbound traffic filter criterion, you must specify a valid range — a series of targe

Configuring Traffic Filters and Protocol Prioritization5-2Specifying MAC Address RangesWhen you create a filter that includes a Source or Destination M

Specifying Common Criterion Ranges5-3Source Routing Bridge Functional MAC AddressesFunctional MAC addresses are Destination MAC addresses that always

Configuring Traffic Filters and Protocol Prioritization5-4Specifying Source and Destination SAP Code RangesTable 5-3 lists some common SAP codes to us

Specifying Common Criterion Ranges5-5Specifying Frame Relay NLPID Range ValuesTable 5-4 lists several Frame Relay network layer protocol ID (NLPID) va

Configuring Traffic Filters and Protocol Prioritization5-6Specifying TCP and UDP Port Range ValuesTable 5-6 lists some common TCP port ranges you can

Specifying Common Criterion Ranges5-7Specifying Ethernet Type Range ValuesTable 5-8 lists some common Ethernet Type codes to use when specifying Ether

ixEditing a Template ...6-13Creating an Inbound Filter ...

Configuring Traffic Filters and Protocol Prioritization5-8DEC 6000-6009DEC MOP 6001-6002DRP 6003DEC LAT 6004LAVC 60073COM 6010-6014UB Download 7000UB

Specifying Common Criterion Ranges5-9Nixdorf 80A3Siemens 80A4-80B3Pacer Software 80C6Applitek 80C7Intergraph 80C8-80CCHarris 3M 80CD-80CEIBM SNA 80D5R

Configuring Traffic Filters and Protocol Prioritization5-10Specifying IP Protocol Range ValuesTable 5-9 lists some IP Protocol Type codes to use when

6-1Chapter 6Applying Inbound Traffic FiltersThis chapter shows how to use the Configuration Manager to configure inbound traffic filters. To apply outbound

Configuring Traffic Filters and Protocol Prioritization6-2Displaying the Inbound Traffic Filters WindowTo display the inbound Traffic Filters window for

Applying Inbound Traffic Filters6-3Figure 6-2. Selecting the Inbound Traffic Filters Menu (Bridge Example)The Filters window for the selected circuit a

Configuring Traffic Filters and Protocol Prioritization6-4Figure 6-3. Selecting the DLSw Inbound Traffic Filters WindowThe DLS Filters window appears.

Applying Inbound Traffic Filters6-5Creating a New TemplateTo add a filter to an interface, you do not always need to create a new template. Often, you

Configuring Traffic Filters and Protocol Prioritization6-6Figure 6-5. Filter Template Management Window3.Click on Create.The Create Template window fo

Applying Inbound Traffic Filters6-7Figure 6-6. Create Template Window4.Enter a name for the new template in the Filter Name box. Give descriptive name