Home » 3Com Manuals » Hubs & Switches » 3Com 4007R » Manual Viewer

3Com 4007R Implementation Guide - Page 680

3Com 4007R - Switch Manual

UPC - 662705445335

Add to My Manuals
Save this manual to your list of manuals

Page 680 highlights

680 INDEX routers area border 454, 464, 465, 475, 477 autonomous system boundary (ASBRs), OSPF 459 autonomous system boundary, OSPF 475, 478 backbone, OSPF 454 backup designated, OSPF 454, 456 databases, OSPF 464 default, OSPF 468 designated, OSPF 454, 457, 476 IDs, OSPF 455 interface 365 internal, OSPF 454 link state databases, OSPF 471, 475 OSPF 459 OSPF, types of 454 placement of OSPF 459 seed 546 routes default 468 external, OSPF 478 and stub areas 487 routing and bridging 355 and protocol-based VLANs 280 AppleTalk 536 as requirement for RSVP 567 between VLANs 260, 282 inter-area, OSPF 457 intra-area, OSPF 457 IP multicast 423 overview 352 system 355, 357 to different autonomous systems 458 to stub area, OSPF 458 routing architecture 353 Routing Information Protocol (RIP) 448 routing policies adding routes to the routing table 385 advertising routes to other routers 385 defined 384 OSPF export 496, 500 routing policies, OSPF 450, 490 and imported RIP routes 491 and static routes 491 export 499 import 493, 496 routing table, IP contents 366 default route 368, 372 described 366 dynamic routes 367 metric 366 static routes 367, 372 status 367 routing table, IPX example 522 roving analysis and RMON 621 and Spanning Tree 620 definition 619 process overview 620 rules 620 RS-232 9-pin-to-25-pin cable pinout 65 9-pin-to-9-pin cable pinout 65 RSVP (Resource Reservation Protocol) 569, 607 overview 566 protocol standard 568 routing requirement 567 sample configuration 609 setting parameters 610 terms 607 RTMP (Routing Table Maintenance Protocol) 540, 550, 555, 561 rules ingress and egress 250 ingress and egress VLAN 295 S sample classifier summary 575 sample configurations GVRP 279 multiple QoS classifiers and control 595 QoS excess tagging 605 QoS filtering classifiers and controls 593 QoS high priority 598 QoS nonflow classifiers and controls 599, 601 QoS to/from classifiers and controls 591 RSVP 609 SAP (Service Advertising Protocol) aging mechanism 525 request handling 525 using for dynamic routes 524 SAP routing policies export 531 import 531 IPX 530 scripting 341 seed interfaces, AppleTalk 548, 549 routers, AppleTalk 546 segmentation, network 359 Serial Line Internet Protocol (SLIP) 75

Section	Page
Contents	3
About This Guide	31
Audience	31
Scope of this Guide	32
Conventions	32
Switch 4007 Documentation	34
Documentation Comments	35
Year 2000 Compliance	35
Configuration Overview	39
Physical Configuration Requirements and Options	40
Requirements	40
Options	41
Order of Installation Activities	41
System Architecture	41
Management Options	42
Management Module Console	42
Switching Module Administration Console	43
Web Management software	43
SNMP-Based Network Management Overview	44
Management Access	45
Terminal Port Access	45
Modem Port Access	46
Access Levels	46
System Configuration Process	47
Configuration Procedure	47
Configure the Management Module	47
Configure Each Switching Module	47
Overview of the ManagementModule	53
Before You Start	53
Module Overview	54
Module Components	54
Module Functions	55
Impact on the Network	56
Installing Management Modules	57
Before You Start	57
Installing Modules	58
Hot Insert and HotSwap	58
Installing Non-Management Modules	58
Creating a Redundant Configuration	59
Installation	59
The Relationship Between Two Management Modules	59
The Failover Process	60
Connectivity Rules	61
Verifying Management Module Operation	62
The Display Button	63
Making Management Connections	63
Connecting to a 10BASE-T Ethernet Port	63
Using an MDI-to-MDI Crossover Cable	64
Connecting to an RS-232 Console Port	64
Using a Modem	66
Verifying Network Connectivity	67
EME Technical Specifications	69
Configuring and Using EME Options	71
Quick Reference Configuration	72
Saving Configuration Values	72
Connecting to the System	73
Initial Access	73
Logging into the System	73
Terminating a Connection	73
Setting Up an IP Address for Telnet	73
Connecting to Remote Devices	74
In-band Connections	75
Serial Line Internet Protocol Connections	75
Configuring Access to the Web Interface	76
Entering Commands	77
The Command Completion Feature	77
Listing Command Options	78
Keystroke Functions	80
Configuring the Terminal	81
Configuring the Terminal to Default Settings	81
Changing the Terminal Configuration	82
Customizing Terminal Settings	82
Setting Terminal Hangup	83
Setting Terminal Prompt	83
Setting Terminal Timeout Value	83
Setting Terminal Type	84
Troubleshooting the Terminal Interface	84
Customizing Your System	86
Assigning a UniqueName	86
Setting EME Diagnostics	86
Assigning a Contact Name and Location	86
Configuring the Internal Clock	87
Configuring User Logins	89
User Access Levels	89
User Login Functions	89
Login Limitations	89
Administer Access	89
Setting the Password	90
Adding New Users	90
Showing Current Users	91
Clearing Login Names	93
Configuring SNMP Values	94
Interaction Between the EME and SNMP	94
Setting Up IP Connectivity	94
Assigning an IP Address to the EME	94
Setting a Subnet Mask	95
Defining a Default Gateway	95
Showing and Clearing IP Settings	95
Creating a Community Table	96
Configuring a Trap Destination	97
Configuring the Authentication Alert Setting	97
Configuring Trap Options	97
Viewing SNMP Extensions and Traps	98
Interpreting EME Trap Messages	98
Obtaining More Information About SNMP	99
Configuring the Event Log	100
Using the File System	101
Software Configuration Files	101
Displaying Files in the File System	101
Deleting Specified Files From the File System	102
Deleting All Files and Resetting the Management Module	102
Resetting System Components	104
Resetting the Chassis	104
Resetting Switching Modules	104
Resetting the EME	105
Resetting the EME to Default Values	105
Accessing the Administration Console	106
Running Diagnostic Tests	107
Reporting Diagnostic Errors	108
Setting servdiag Characteristics	108
The cont_mode Characteristic	108
The loop_count Characteristic	108
The verbosity Characteristic	109
Displaying servdiag Characteristics	109
Obtaining Technical Assistance	109
Managing the Chassis Power and Temperature	111
Managing Power in the Chassis	112
Intelligent Power Subsystem Features	112
Load-Sharing Power Supplies	113
Power Non-Fault-Tolerant Mode	114
Power Fault-Tolerant Mode	114
Setting Power Fault-Tolerance	115
Enabling and Disabling Power to Slots	116
Power Class Settings	117
Using the Default Power Class Setting	117
Setting Power Class	117
Power Class 10 Warnings	118
Budgeting Power	118
Allocating Power for Installed Modules	118
Increasing the Unallocated Power Budget	119
Determining Chassis Power Budget	120
Power Supply Output in Non-Fault-Tolerant Mode	121
Power Supply Output in Fault-Tolerant Mode	121
Overheat Conditions	122
Enabling and Disabling Automatic Module Power-off	123
The Overheat Management Area	123
Overheat Power-off Process	124
Overheat Recovery Process	125
Saved Power Management Configurations	125
Displaying Operating Conditions	126
Displaying Chassis Information	126
Displaying Module Information	127
Basic Information For One Module	127
Basic Information For All Modules	127
Detailed Information For All Modules	127
Displaying Power Information	128
Displaying Chassis Inventory Information	129
Displaying EME Information	129
Module Parameters	133
Module Parameters Overview	134
Features	134
Benefits	134
Key Concepts	135
How to Set and Modify Module Parameters	135
Terminology	135
nvData	136
Physical Port Numbering	137
Slot Architecture	137
Default Port Settings	138
Configuring Port Status	139
Allocating Switch Fabric Capacity to Slots	140
9-port GEN Switch Fabric Module	140
Using Table33: Examples	140
24-port GEN Switch Fabric Module	141
Using Table34: Examples	142
Key Guidelines for Implementation	142
Effects of Removing a Module	143
VLAN Changes	143
Trunk Changes	143
Effects of Replacing Modules	144
Replacing Modules of the Same Type	144
Replacing Modules of Different Types	144
Ethernet	145
Ethernet Overview	146
Features	146
Benefits	147
Link Bandwidths	147
Link Availability	147
Other Benefits	147
Key Concepts	148
Ethernet Packet Processing	150
Key Guidelines for Implementation	152
Link Bandwidths	152
Trunks	152
Port Enable and Disable (Port State)	153
Important Considerations	153
Port Labels	153
Implementing PortLabels	153
Autonegotiation	154
Important Considerations	154
Port Mode	156
Important Considerations	156
Flow Control	157
Important Considerations	157
PACE Interactive Access	158
Important Considerations	158
Port Monitoring	158
Standards, Protocols, and Related Reading	159
Ethernet Protocol	159
Media Specifications	159
Related Reading	160
Bridge-Wide and Bridge Port Parameters	161
Bridging Overview	162
Benefits	162
Key Bridging Concepts	163
Learning Addresses	163
Aging Addresses	163
Forwarding, Filtering, and Flooding	164
Loop Detection and Network Resiliency	164
Bridging Implementation Summary	165
Key Guidelines for Implementation	167
Physical Ports and Bridge Ports	167
Option For FastAging	167
If You Want ToUseSTP	167
Port Forwarding Behavior	168
Routing Over BlockedSTP Ports	168
STP Compatible with Trunking	168
STP Not Compatible with Resilient Links	169
Bridge Ports and Trunks	169
Multicast Limits and Trunks	169
Bridge Port Addresses in Closed VLAN Mode	169
GVRP Usefulness	169
STP Terms and Concepts	170
Configuration Messages	170
Bridge Hierarchy	170
Actions That Result from CBPDU Information	171
Contents of CBPDUs	173
Comparing CBPDUs	173
How a Single Bridge Interprets CBPDUs	174
How Multiple Bridges Interpret CBPDUs	175
Determining the Root Bridge	178
Determining the Root Ports	178
Determining the Designated Bridge and Designated Ports	178
Spanning Tree PortStates	180
Reconfiguring the Bridged Network Topology	182
Resulting Actions	182
STP Bridge and Port Parameters	183
Bridge-wide STP Parameters	183
Bridge-Wide STP State	183
Bridge Priority	184
Bridge Maximum Age	184
Bridge Hello Time	184
Bridge Forward Delay	184
STP Group Address	185
Bridge Port STPParameters	186
Port State	186
Port Path Cost	186
Port Priority	186
MAC Address Table Design	187
Address Space	187
Important Considerations	187
Address Aging	189
Address Table Dependencies	189
Normal Aging Process	190
If the STP State isEnabled	190
STP Topology Change	190
Port Down Events	191
If the STP State isDisabled	191
If STP State is “AgingOnly”	192
Important Considerations	192
Frame Processing	194
IP Fragmentation	194
IPX SNAP Translation	195
Broadcast and Multicast Limits	195
Important Considerations	196
GARP VLAN Registration Protocol (GVRP)	197
Important Considerations	197
Standards, Protocols, and Related Reading	198
Class of Service (CoS)	199
Overview	200
Key Concepts	201
Basic Elements of theStandard	201
Format of PrioritizedPackets	202
Queues and PriorityLevels	202
CoS in Your System	203
CoS Architecture	203
Important Considerations	204
Configuring Priority Levels	204
Configuring a Rate Limit on Queue1	204
Important Considerations	205
Handling Tagged and Untagged Packets	206
Standards, Protocols, and Related Reading	206
IP Multicast Filtering with IGMP	207
Overview	208
Benefits	208
Key Concepts	210
Devices That Generate IP Multicast Packets	210
Group Addresses and Group Members	210
Communication Protocols	210
IP Multicast DeliveryProcess	211
How Routers and Switches UseIGMP	211
Tracking Group Member Locations	212
How Hosts Use IGMP	213
Host Membership Reports	213
Join Message	213
Leave-Group Messages	213
Report Suppression and Effect on Switch Activity	213
Configuring IGMP in Your System	214
Key Implementation Guidelines	215
ProcessingIP MulticastPackets	217
Effects of MAC Address Aliasing	218
Important Considerations	219
Operating as theQuerier	220
Locating Multicast Routers	220
Aging the IGMP Tables	221
Standards, Protocols, and Related Reading	221
Trunking	223
Trunking Overview	224
Features	224
Benefits	224
Key Concepts	225
Port Numbering in a Trunk	225
Trunk Control Message Protocol (TCMP)	226
Key Guidelines for Implementation	227
General Guidelines	227
Trunk Capacity Guidelines	229
Automatic Backplane Trunking	230
Important Considerations	230
Defining Trunks	231
Important Considerations	231
Modifying Trunks	233
Important Considerations	233
Removing Trunks	233
Important Consideration	233
Standards, Protocols, and Related Reading	234
Resilient Links	235
Resilient Links Overview	236
Features	237
Benefits	237
Key Concepts	237
Key Guidelines for Implementation	238
General Guidelines	238
Resilient Link Define and Modify	238
Important Considerations	238
Resilient LinkState	239
Important Considerations	239
Resilient Link ActivePort	239
Important Considerations	239
Resilient LinkRemove	239
Important Consideration	239
Virtual LANs (VLANs)	241
VLAN Overview	242
Need for VLANs	242
Benefits	243
VLANs on the Switch4007	243
Features	245
Key Concepts	246
Related Standards and Protocols	246
Tagging Types	247
VLAN IDs	248
Terminology	249
Key Guidelines for Implementation	250
Migration Path for Network-based VLANs	250
VLANs Created by Router Port IP Interfaces	252
Design Guidelines	253
Procedural Guidelines	254
Number of VLANs	256
Equation for VLANs on Multilayer Switching Modules	256
VLAN Aware Mode	258
General Guidelines	259
VLAN allOpen or allClosed Mode	261
Important Considerations	261
Modifying the VLAN Mode	263
Mode Requirements	264
Using allOpen Mode	265
Using allClosed Mode	265
Port-based VLANs	266
The Default VLAN	266
Modifying the Default VLAN	267
Trunking and the Default VLAN	268
User-Configured Port-based VLANs	270
Important Considerations	270
Example 1: A Single VLAN Configuration	271
Example 2: VLANs with Tagged Backplane Ports	272
Example 3: VLANs with Tagged Front-Panel Ports	274
Dynamic Port-based VLANs Using GVRP	277
Important Considerations	277
Example: GVRP	279
Protocol-based VLANs	280
Important Considerations	280
Selecting a Protocol Suite	281
Establishing Routing Between VLANs	282
Important Considerations	282
Example 1: Routing Between Multilayer Modules	283
Example 2: One-Armed Routing Configuration	286
Network-based IP VLANs	289
Important Considerations	289
Example: Network-based VLANs	290
Ignore STP Mode	293
Important Considerations	293
Example: Ignore STP Mode	293
Rules of VLAN Operation	295
Ingress Rules	295
Egress Rules	298
Standard Bridging Rules for Outgoing Frames	298
Tag Status Rules	298
Examples of Flooding and Forwarding Decisions	299
Example 1: Flooding Decisions for Protocol-based VLANs	299
Example 2: VLAN Exception Flooding	300
Rules for Network-based (Layer 3) VLANs	300
Example 3: Decisions for One Network-based VLAN	301
Modifying and Removing VLANs	302
Monitoring VLAN Statistics	303
Packet Filtering	305
Packet Filtering Overview	306
What Can You Filter?	306
When Is a Filter Applied? — Paths	307
Input Packet Filtering: Receive Path	307
Output Packet Filtering: Transmit Path	307
Internal Packet Filtering: Receive Internal Path	307
Path Assignment	308
Key Concepts	309
Standard Packet Filters	309
Custom Packet Filters	310
Important Considerations	311
Managing Packet Filters	311
Tools for Writing Filters	313
ASCII Text Editor	313
Built-in Line Editor	313
Web Management Filter Builder Tool	315
Downloading Custom Packet Filters	317
Setting Up Your Environment	317
Loading a Custom Filter on the Switch4007	318
The Packet Filtering Language	319
Principles for Writing a Custom Filter	319
How the Packet Filter Language Works	319
Procedure for Writing a Custom Filter	320
Packet Filter Opcodes	322
Implementing Sequential Tests in a Packet Filter	329
Common Syntax Errors	331
Custom Packet Filter Examples	333
Destination AddressFilter	333
Source Address Filter	333
Length Filter	333
Type Filter	334
Ethernet Type IPX and Multicast Filter	334
Multiple Destination Address Filter	334
Source Address and Type Filter	335
Accept XNS or IP Filter	335
XNS Routing Filter	335
Port Group Filter	336
Limits to Filter Size	336
Storage Rules for Preprocessed Packet Filters	336
Run-time Storage of Packet Filters	336
Using Port Groups in Custom Packet Filters	337
Port Group Packet Filter Example	337
Port Group Filter Operation	337
Port Group Management and Control Functions	340
Defining Port Groups	340
Important Considerations	340
Long Custom Filter Example	341
Filtering Problem	341
Packet Filter Solution	342
Packet Filter One	344
Packet Filter Two	345
Combining a Subset of the Filters	346
Combining All the Filters	347
Optimizing the Filter with Accept and Reject Commands	348
IP Routing	351
Routing Overview	352
Routing in a Subnetworked Environment	354
Integrating Bridging and Routing	355
Bridging and Routing Models	355
3Com Bridging and Routing	356
IP Routing Overview	358
Features and Benefits	359
Key Concepts	359
Multiple IP Interfaces per VLAN	359
Media Access Control (MAC) Address	360
Network-Layer Address	360
IP Addresses	360
Dotted Decimal Notation	361
Network Portion	361
Subnetwork Portion	362
Subnet Mask Numbering	363
Variable Length Subnet Masks (VLSMs)	364
How VLSMs Work	364
Guidelines for Using VLSMs	364
Router Interfaces	365
Routing Table	366
Default Route	368
Routing Models: Port-based and VLAN-based	368
Key Guidelines for Implementing IP Routing	369
Configure Trunks (Optional)	369
Configure IP VLANs	370
Establish Your IP Interfaces	370
Interface Parameters	370
Important Consideration	371
Defining an IP Interface	371
Enable IP Routing	372

Match case Limit results 1 per page

680

NDEX

routers

area border

454, 464, 465, 475, 477

autonomous system boundary (ASBRs),

OSPF

459

autonomous system boundary, OSPF

475, 478

backbone, OSPF

454

backup designated, OSPF

454, 456

databases, OSPF

464

default, OSPF

468

designated, OSPF

454, 457, 476

IDs, OSPF

455

interface

365

internal, OSPF

454

link state databases, OSPF

471, 475

OSPF

459

OSPF, types of

454

placement of OSPF

459

seed

546

routes

default

468

external, OSPF

478

and stub areas

487

routing

and bridging

355

and protocol-based VLANs

280

AppleTalk

536

as requirement for RSVP

567

between VLANs

260, 282

inter-area, OSPF

457

intra-area, OSPF

457

IP multicast

423

overview

352

system

355, 357

to different autonomous systems

458

to stub area, OSPF

458

routing architecture

353

Routing Information Protocol (RIP)

448

routing policies

adding routes to the routing table

385

advertising routes to other routers

385

defined

384

OSPF

export

496, 500

routing policies, OSPF

450, 490

and imported RIP routes

491

and static routes

491

export

499

import

493, 496

routing table, IP

contents

366

default route

368, 372

described

366

dynamic routes

367

metric

366

static routes

367, 372

status

367

routing table, IPX

example

522

roving analysis

and RMON

621

and Spanning Tree

620

definition

619

process overview

620

rules

620

RS-232

9-pin-to-25-pin cable pinout

9-pin-to-9-pin cable pinout

RSVP (Resource Reservation Protocol)

569, 607

overview

566

protocol standard

568

routing requirement

567

sample configuration

609

setting parameters

610

terms

607

RTMP (Routing Table Maintenance Protocol)

540,

550, 555, 561

rules

ingress and egress

250

ingress and egress VLAN

295

sample classifier summary

575

sample configurations

GVRP

279

multiple QoS classifiers and control

595

QoS excess tagging

605

QoS filtering classifiers and controls

593

QoS high priority

598

QoS nonflow classifiers and controls

599, 601

QoS to/from classifiers and controls

591

RSVP

609

SAP (Service Advertising Protocol)

aging mechanism

525

request handling

525

using for dynamic routes

524

SAP routing policies

export

531

import

531

IPX

530

scripting

341

seed

interfaces, AppleTalk

548, 549

routers, AppleTalk

546

segmentation, network

359

Serial Line Internet Protocol (SLIP)