Cabletron Systems 9A656-04 Istruzioni per l'installazione e il funzionamento

9033126-01 Page 1 of 43

PVC ADDENDUM TO THE

9A686-04/9A656-04 CONFIGURATION GUIDE

This addendum to the

9A686-04/9A656-04 Conﬁguration Guide

provides an overview of the

conﬁgurations that must take place before the ﬁrst PVC can be created, and describes how to create a

PVC on the 9A686-04 and 9A656-04. This document provides a conﬁguration example, with instructions

on how to create a PVC to meet the needs of the network.

Overview

This document includes the following topics:

• Overview of ILMI 4.0 and the SmartSwitch 9500 system, and how it pertains to the creation of PVCs.

• Overview of Persistence, and how it pertains to the creation of PVCs.

• Overview of the front panel interface numbering, and CTM backplane interface numbering schemes

supported by the 9A686-04 and 9A656-04.

• Overview of Trafﬁc Descriptors, and how they pertain to the creation of PVCs.

• Overview of creating a PVC across the CTM backplane of the SmartSwitch 9500.

• A step-by-step instructs how to perform the following tasks:

• Conﬁgure the ILMI settings of a SmartSwitch 9500

• Verify that persistence is active on the SmartSwitch 9500

• Create a new trafﬁc descriptor

• Create a PVC from a front panel interface on a 9A686-04 to another front panel interface on the same

9A686-04

NOTE

This guide is for Cabletron Systems service personnel and QUALIFIED customer

maintenance personnel who are familiar with installing networking systems, and have

a working knowledge of ATM networks, and the use of MIBs to conﬁgure network

devices.

The information contained in this supplement supersedes ANY and ALL information

regarding PVCs described in the

9A686-04/9A656-04 Conﬁguration Guide

Unless noted otherwise, the information contained in this supplement pertains to both

the 9A686-04 and the 9A656-04.

CAUTION

Throughout this document, the user is often instructed to verify the settings conﬁgured

in the previous step. It is highly recommended the user perform these veriﬁcation

steps.This will assist the user in determining where problems may have occurred if the

PVC does not become operational.

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 2 of 43

ILMI 4.0 and the SmartSwitch 9500 System

By default, the SmartSwitch 9500 is an SVC-only switch. This means that noVPI/VCI pairs are reserved

for PVCs. Before the user can create a PVC, the default ILMI settings must be changed to reserve

VPI/VCI pairs for PVC use.

Local management of the SmartSwitch 9500 allows the user to specify minimum and maximum values

for VCI and VPIs for all SVCs and SPVCs that the SmartSwitch 9500 will use while establishing

connections. Table 1 provides the default settings ILMI uses when ﬁrst connected to the ATM network.

Table 2 displays the available range of VCI/VPI pairs that may be conﬁgured for requested connections.

Table 1 Default Minimum and Maximum VCI andVPIValues for SVCs and SVPCs

Table 2 Minimum and Maximum VCI andVPI Ranges

The main purpose of the ILMI Conﬁguration Menu screen is to limit the range ofVPI/VCI pairs for SVC

connections. In the default setting, there are no VPI/VCI pairs reserved for PVCs. Refer to Figure 1.

Minimum VCI for SVCs

(MIN SVCC VCI ﬁeld) 32

Minimum CTM VCI for SVCs

(Min CTM SVCC VCI ﬁeld) 32

Maximum VPI for SVCs

(MAX SVCC VPI ﬁeld) 4095

Maximum VPI for VPCs

(MAX SVPC VPI ﬁeld) 4095

Type MinimumValue Maximum Value

VCI for SVCs 32 16k

VCI for CTM SVCs 32 511

Maximum VPI for SVCs 0 4095

Maximum VPI for VPCs 0 4095

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 3 of 43

Figure 1 Default ILMI Settings

Figure 1 displays the default settings of ILMI for the 9A686-04 and 9A656-04. The entire square

represents the totalVPI/VCI range for allATM Connections. This provides a VCI range of 0 through 16K

and aVPI range of 0 through 4095.VCI values 0 through 32 are reserved by theATM Forum, as shown in

Figure 1. By default, the 9A686-04 and 9A656-04 are an SVC only switch. This allows SVCs to be

created with a VCI value between 32 and 16k. In addition, the default setting allows SVCs to use the

entire VPI range of 0 through 4095. The ILMI Conﬁguration screen allows the user to either decrease or

increase the reserved VCI or VPI range that SVCs may use. Refer to Figure 3.

VCI Range

4095

VPI Range

016k

VCI

0-31

VPI

0-4095

Reserved by the

ATM Forum

VCI 32-16K

VPI 0-4095 VCI Values 32-16K

VPI Values 0-4095

Available for Use by

SVCs ONLY

Max SVCC VPI=4095

Min SVCC VCI=32

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 4 of 43

Figure 2 Modiﬁed ILMI Conﬁguration Menu Screen

Figure 2 displays how the ILMI Conﬁguration Menu screen may be used to change the

SmartSwitch 9500 from the default settings. The settings entered in Figure 2 result in the conﬁguration

shown in Figure 3.

Figure 3 User-Deﬁned ILMI Conﬁguration

CAUTION

Changing the values of the ILMI Conﬁguration screen will cause all current

connections on the system to be dropped.

VCI Range

4095

VPI Range

016k

VCI

0-31

VPI

0-4095

Reserved by the

ATM Forum

VCI

32-199

VPI

0-4095 VCI Values 32-199

VPI Values 0-4095

Available for Use by

PVCs Only

VCI 32-16K

VPI 5-4095 VCI Values 32-16K

VPI Values 5-4095

Available for Use by

PVCs Only

31 200

Min SVCC VCI=200

Min CTM SVCC VCI=200

Max. SVCC VPI

Max. SVPC VPI VCI 200-16k, VPI 4

VCI 200-16k, VPI 0-3

VPI Values 1-4 Available for SVPCs,

VPI 4 is also available for PVCs

With VCI Range 32-16k

VCI Values 200-16k

VPI Values 0-3 Available

for SVCs and SVPCs. This is

the ONLYAvailable Range for SVCs

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 5 of 43

Figure 3 provides an example of a user-deﬁned ILMI conﬁguration. In this example the user has

increased the minimum VCI value for SVCCs from the default value of 33 to 200. The maximum VPI

value for SVCCs has been set to 3, and the maximum VPI value for SVPCs has been set to 4. This limits

the range for SVCCs and SVPCs to the settings displayed in Figure 3.

Persistence

The procedures described in this document, by default, create permanent conﬁgurations for the interface

on which they were performed, which are deﬁned as “persistent” conﬁgurations. These conﬁgurable

options are performed on an interface by interface basis via theAToM MIB. Before performing any of

these conﬁgurations, be aware that the only way to revert these settings to the factory default settings is to

clear NVRAM. Instructions on how to clear NVRAM can be found in the

9A686-04 Hardware and

Installation Guide

and the

9A656-04 Hardware and Installation Guide

. Pressing the RESET button on

the front of the module will NOT restore factory default settings after they have been changed.

Keep in mind that if the user turns off persistence (described later in this document),ALL PVCs created

on this ENTIRE chassis will be lost if ANY module in the SmartSwitch 9500 chassis resets.

CAUTION

Before making any changes to the ILMI Conﬁguration Menu screen, refer to the

following two examples of what can happen if ILMI settings are changed

indiscriminately:

The user sets the MIN SVCC VCI ﬁeld to 2000.However, a third party ATM Uplink

device is attached to this SmartSwitch 9500, and this uplink device only supports a

VCI range of 0 through 1064.In this case, the ATM Uplink device would NOT be able

to establish ANY SVCs with the SmartSwitch 9500.

The user MUST be aware of the

VPI/VCI ranges of ALL devices that connect to this SmartSwitch 9500 before

changing the ILMI parameters

The user sets the MIN CTM SVCC VCI ﬁeld to 500.In this case, the user has allowed

only 11 VCI values to be reserved for SVCs across the CTM backplane of this

SmartSwitch 9500. Be aware that the VCI range for all CTM interfaces is 0 through

511.

If the user sets a value at or above 511 for this ﬁeld, NO SVCs will be

created across the CTM backplane.

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 6 of 43

Front Panel Interface (Port) Numbering

Read through the following section to learn about the front panel interface numbering scheme used by the

9A686-04 and 9A656-04. An understanding of this numbering scheme is necessary to create a PVC on a

front panel interface.

The 9A686-04 and 9A656-04 use a geographic interface numbering scheme that allows for easy

identiﬁcation of each front panel and backplane interface of each 9A686-04 and 9A656-04 installed in

the SmartSwitch 9500 chassis. Interface numbers are generated as follows:

Slot ##, ANIM ##, Interface ##

Table 3 provides an example of how the interface numbering scheme works. In this example, there is a

SmartSwitch 9500 chassis with ﬁve 9A686-04 modules installed. These modules are installed in slots 1,

3, 7, 11 and 14. Each of these modules are equipped with fourANIM 21/3s. This provides each 9A686-04

and 9A656-04 with 12 front panel interfaces. Refer to Table 3 for a breakdown of the interface numbering

scheme.

Table 3 Front Panel Interface (Port) Numbering Example

ANIM # Interface # Slot 1 Slot 3 Slot 7 Slot 11 Slot 14

1 1 10101 30101 70101 110101 140101

1 2 10102 30102 70102 110102 140102

1 3 10103 30103 70103 110103 140103

2 1 10201 30201 70201 110201 140201

2 2 10202 30202 70202 110202 140202

2 3 10203 30203 70203 110203 140203

3 1 10301 30301 70301 110301 140301

3 2 10302 30302 70302 110302 140302

3 3 10303 30303 70303 110303 140303

4 1 10401 30401 70401 110401 140401

4 2 10402 30402 70402 110402 140402

4 3 10403 30403 70403 110403 140403

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 7 of 43

CTM (Backplane) Interface Numbering Scheme

Read through the following section to learn about the CTM interface numbering scheme used by the

9A686-04 and 9A656-04. An understanding of this numbering scheme is necessary to create a PVC

across the CTM backplane.

Table 4 through Table 7 provide examples of how the CTM interface numbering scheme works,

depending on when the user has a 9A656-04 or 9A686-04, and if these modules are installed in a 14-slot

or 6-slot SmartSwitch 9500 chassis.

Refer to

Creating a PVC across the CTM Backplane

on page 10 for an example of how a user would use

the CTM backplane interface numbering scheme to create a PVC that traverses the CTM backplane.

Table 4 CTM Interface Numbering for a 9A656-04 Installed in the 14-Slot SmartSwitch 9500

To the 9A656-04 or 9A686-04 installed in slot number

Slot #

1234567891011121314

From the 9A656-04 installed in slot number

xxx 902 1001 1002 1101 1102 1201 1202 1301 1302 1401 1402 1501 1502

901 xxx 1001 1002 1101 1102 1201 1202 1301 1302 1401 1402 1501 1502

901 902 xxx 1002 1101 1102 1201 1202 1301 1302 1401 1402 1501 1502

901 902 1001 xxx 1101 1102 1201 1202 1301 1302 1401 1402 1501 1502

901 902 1001 1002 xxx 1102 1201 1202 1301 1302 1401 1402 1501 1502

901 902 1001 1002 1101 xxx 1201 1202 1301 1302 1401 1402 1501 1502

901 902 1001 1002 1101 1102 xxx 1202 1301 1302 1401 1402 1501 1502

901 902 1001 1002 1101 1102 1201 xxx 1301 1302 1401 1402 1501 1502

901 902 1001 1002 1101 1102 1201 1202 xxx 1302 1401 1402 1501 1502

901 902 1001 1002 1101 1102 1201 1202 1301 xxx 1401 1402 1501 1502

901 902 1001 1002 1101 1102 1201 1202 1301 1302 xxx 1402 1501 1502

901 902 1001 1002 1101 1102 1201 1202 1301 1302 1401 xxx 1501 1502

901 902 1001 1002 1101 1102 1201 1202 1301 1302 1401 1402 xxx 1502

901 902 1001 1002 1101 1102 1201 1202 1301 1302 1401 1402 1501 xxx

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 8 of 43

Table 5 CTM Interface Numbering for a 9A686-04 Installed in the 14-Slot SmartSwitch 9500

To the 9A656-04 or 9A686-04 installed in slot number

Slot #

1234567891011121314

From the 9A686-04 installed in slot number

xxx 503 504 601 602 603 604 701 702 703 704 801 802 803

502 xxx 504 601 602 603 604 701 702 703 704 801 802 803

502 503 xxx 601 602 603 604 701 702 703 704 801 802 803

502 503 504 xxx 602 603 604 701 702 703 704 801 802 803

502 503 504 601 xxx 603 604 701 702 703 704 801 802 803

502 503 504 601 602 xxx 604 701 702 703 704 801 802 803

502 503 504 601 602 603 xxx 701 702 703 704 801 802 803

502 503 504 601 602 603 604 xxx 702 703 704 801 802 803

502 503 504 601 602 603 604 701 xxx 703 704 801 802 803

502 503 504 601 602 603 604 701 702 xxx 704 801 802 803

502 503 504 601 602 603 604 701 702 703 xxx 801 802 803

502 503 504 601 602 603 604 701 702 703 704 xxx 802 803

502 503 504 601 602 603 604 701 702 703 704 801 xxx 803

502 503 504 601 602 603 604 701 702 703 704 801 802 xxx

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 9 of 43

Table 6 CTM Interface Numbering for a 9A656-04 Installed in the 6-Slot SmartSwitch 9500

To the 9A656-04 or 9A686-04 installed in slot number

Slot #

112233445566

From the 9A656-04 installed in slot number

xxx xxx 1001 1002 1101 1102 1201 1202 1301 1302 1401 1402

901 902 xxxx xxxx 1101 1102 1201 1202 1301 1302 1401 1402

901 902 1001 1002 xxxx xxxx 1201 1202 1301 1302 1401 1402

901 902 1001 1002 1101 1102 xxxx xxxx 1301 1302 1401 1402

901 902 1001 1002 1101 1102 1201 1202 xxxx xxxx 1401 1402

901 902 1001 1002 1101 1102 1201 1202 1301 1302 xxxx xxxx

Table 7 CTM Interface Numbering for a 9A686-04 Installed in the 6-Slot SmartSwitch 9500

To the 9A656-04 or 9A686-04 installed in slot number

Slot #

112233445566

From the 9A686-04 installed in slot number

xxx xxx 504 601 602 603 604 701 702 703 704 801

502 503 xxxx xxxx 602 603 604 701 702 703 704 801

502 503 504 601 xxxx xxxx 604 701 702 703 704 801

502 503 504 601 602 603 xxxx xxxx 702 703 704 801

502 503 504 601 602 603 604 701 xxxx xxxx 704 801

502 503 504 601 602 603 604 701 702 703 xxxx xxxx

PVC Addendum to the 9A686-04/9A656-04 Conﬁguration Guide

9033126-01 Page 10 of 43

Trafﬁc Descriptors for the 9A686-04 and 9A656-04

If the user is creating a PVC for the ﬁrst time, the user must also create a trafﬁc descriptor. A trafﬁc

descriptor proﬁle instructs the two interfaces, or sides, of the PVC as to what type ofATM connection

they will support. For example, in the PVC created later on in this document, the user desires a Variable

Bit Rate (VBR) connection between the two interfaces. In addition, a Peak Cell Rate (PCR) of 1000 cells

a second, and a Sustained Cell Rate (SCR) of 500 cells a second, with a Maximum Burst Size of 75. All

of this information is conﬁgured in the trafﬁc descriptor. Then, when the PVC is created, this trafﬁc

descriptor is assigned to the PVC. This trafﬁc descriptor can then be assigned to any other number of

PVCs that the user requires, or new trafﬁc descriptors that provide different levels of QoS (CBR, ABR,

etc.) may be created. Table 8 provides a detailed listing of the 15 trafﬁc proﬁles supported by the

9A686-04 and 9A656-04.

Creating a PVC across the CTM Backplane

This section provides a basic example of creating a PVC across the CTM backplane. In this case, two

PVCs must be conﬁgured. Refer to Figure 4.

Figure 4 Creating a PVC Across Multiple Modules

In this example, the user created a PVC from port 3 ofANIM 1 of the 9A686-04 installed in slot 1 of the

chassis, to port 1 of ANIM 1 of the 9A686-04 installed in slot 14 of the chassis.

NOTE

The user MUST create at least one trafﬁc descriptor before a PVC can be created.

Port 4

Port 3

Port 2 ANIM 1

Port 1

Port 3

Port 2 ANIM 2

Port 1

Port 3

Port 2 ANIM 3

Port 1

Port 3

Port 2

ANIM 4

Port 1

CTM Backplane

Port 3

Port 2

ANIM 1

Port 1

Port 3

Port 2

ANIM 2

Port 1

Port 3

Port 2

ANIM 3

Port 1

Port 3

Port 2

ANIM 4

Port 1

9A686-04 Installed in Slot 1 9A686-04 Installed in Slot 14

CTM

Interface CTM

Interface

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