CCNP Self-Study : Building Scalable Cisco Internetworks (BSCI)

by Paquet, Catherine; Teare, Diane

• ISBN13: 9781587051463
• ISBN10: 158705146X
• Edition: 2nd
• Format: Hardcover
• Copyright: 2004-01-01
• Publisher: Cisco Press

Summary

- Learn from the newest edition of the best-selling BSCI book - Master routed network construction and support with the only Cisco authorized self-study book for CCNP routing foundation learning - Developed in conjunction with Cisco - Includes review questions, configuration exercises, chapter objectives and summaries, key term definitions, and command summaries

Table of Contents

Foreword	xxix
Introduction	xxx
Chapter 1 Advanced IP Addressing	3	(88)
IP Address Planning	4	(12)
Scalable Network Design	4	(4)
Functional Structured Design	4	(1)
Geographic Structured Design	5	(1)
Hierarchical Layers	6	(2)
Benefits of a Good Network Design	8	(3)
Scalability of a Good Network Design	9	(1)
Predictability of a Good Network Design	10	(1)
Flexibility of a Good Network Design	11	(1)
Benefits of an Optimized IP Addressing Plan	11	(2)
Scalable Network Addressing Example	13	(1)
Nonscalable Network Addressing	14	(2)
Update Size	15	(1)
Unsummarized Internetwork Topology Changes	15	(1)
Summarized Network Topology Changes	15	(1)
Hierarchical Addressing Using Variable-Length Subnet Masks	16	(10)
Network Mask and Prefix Length	16	(3)
IP Addressing and Subnetting	16	(2)
Use of the Network Mask	18	(1)
Network Mask Example	18	(1)
Implementing VLSM in a Scalable Network	19	(2)
VLSM Calculation Example	21	(5)
LAN Addresses	22	(2)
Serial Line Addresses	24	(1)
Summary of Addresses Used in the VLSM Example	25	(1)
Another VLSM Example	26	(1)
Route Summarization	26	(6)
Route Summarization Overview	27	(2)
Route Summarization Calculation Example	29	(1)
Summarizing Addresses in a VLSM-Designed Network	30	(1)
Route Summarization Implementation	31	(1)
Route Summarization Operation in Cisco Routers	31	(1)
Route Summarization in IP Routing Protocols	32	(1)
Classless Interdomain Routing	32	(2)
CIDR Example	33	(1)
Network Address Translation	34	(12)
NAT Terminology and Features	35	(4)
NAT Terminology	35	(2)
Features Supported by NAT	37	(2)
Configuring NAT with Access Lists	39	(2)
Standard Access List Translation Example	39	(1)
Extended Access List Translation Example	40	(1)
Configuring NAT with Route Maps	41	(5)
Understanding Route Maps	42	(2)
NAT with Route Maps Example	44	(2)
Understanding IP Version 6	46	(15)
Benefits of IPv6	46	(1)
IPv6 Addressing	47	(5)
IPv6 Address Format	47	(1)
IPv6 Address Types	48	(1)
IPv6 Address Aggregation	49	(1)
IPv6 Autoconfiguration	50	(1)
IPv6 Renumbering	51	(1)
IPv6 Packet Format	52	(4)
IPv4 Header Format	52	(1)
IPv6 Header Format	53	(2)
IPv6 Extension Headers	55	(1)
IPv6 to IPv4 Interoperability	56	(3)
Dual-Stack Transition	57	(1)
Overlay Tunnels	57	(2)
IPv6 Routing Protocols	59	(5)
RIPng	60	(1)
OSPFv3	60	(1)
Integrated IS-ISv6	60	(1)
BGP4+	61	(1)
Summary	61	(3)
References	64	(1)
Configuration Exercise 1-1: Basic Connectivity	64	(4)
Objectives	64	(1)
Visual Objective	65	(1)
Command List	65	(1)
Task: Setting Up the Edge Routers	66	(2)
Exercise Verification	68	(1)
Configuration Exercise 1-2: NAT Using Access Lists and Route Maps	68	(23)
Objectives	68	(1)
Visual Objective	68	(1)
Command List	68	(6)
Task 1: Connecting the Internal Router to the Edge Router	70	(1)
Task 2: Setting Up ACL-Based NAT	70	(1)
Task 3: Translating to the Other Edge Router	71	(1)
Task 4: Using a Route Map with NAT to Translate Internal Addresses	72	(1)
Task 5: Downloading a Configuration File	73	(1)
Exercise Verification	73	(1)
Solution to Configuration Exercise 1-1: Basic Connectivity	74	(3)
Solution to Task: Setting Up the Edge Routers	74	(3)
Exercise Verification	77	(1)
Solution to Configuration Exercise 1-2: NAT Using Access Lists and Route Maps	77	(9)
Solution to Task 1: Connecting the Internal Router to the Edge Router	77	(1)
Solution to Task 2: Setting Up ACL-Based NAT	78	(2)
Solution to Task 3: Translating to the Other Edge Router	80	(2)
Solution to Task 4: Using a Route Map with NAT to Translate Internal Addresses	82	(3)
Solution to Task 5: Downloading a Configuration File	85	(1)
Exercise Verification	85	(1)
Review Questions	86	(5)
Chapter 2 Routing Principles	91	(52)
IP Routing Overview	91	(8)
Principles of Static Routing	91	(4)
Configuring a Static Default Route	94	(1)
Principles of Dynamic Routing	95	(2)
Principles of On-Demand Routing	97	(1)
Configuring ODR.	98	(1)
Characteristics of Routing Protocols	99	(14)
Classful Routing Protocol Concepts	100	(3)
Automatic Network-Boundary Summarization in a Classful Routing Protocol	100	(2)
Summarizing Routes in a Discontiguous Network	102	(1)
Route Summarization Cautions in Discontiguous Networks	102	(1)
Route Summarization Summary	103	(3)
Examining a Classful Routing Table	103	(2)
The ip classless Command	105	(1)
Classless Routing Protocol Concepts	106	(7)
Classless Subnetting Requirements	106	(1)
Automatic Network-Boundary Summarization Using RIPv2 and EIGRP	107	(1)
The auto-summary Command for RIPv2 and EIGRP	108	(2)
Characteristics of RIPv1	110	(1)
Characteristics of RIPv2	110	(3)
IP Routing Protocol Comparisons	113	(8)
Administrative Distance	113	(2)
Floating Static Routes	115	(1)
Criteria for Inserting Routes in the IP Routing Table	116	(1)
Comparing Routing Protocol Charts	117	(4)
Summary	121	(1)
References	121	(1)
Configuration Exercise: Migrating to a Classless Routing Protocol	121	(5)
Objectives	122	(1)
Visual Objective	122	(1)
Command List	123	(1)
Task 1: Cleaning Up	124	(1)
Task 2: Exploring Classful Routing	124	(1)
Task 3: Exploring Classless Forwarding	125	(1)
Task 4: Optimizing Classless Routes for Scalability	125	(1)
Exercise Verification	126	(1)
Solution to Configuration Exercise: Migrating to a Classless Routing Protocol	126	(11)
Solution to Task 1: Cleaning Up	126	(2)
Solution to Task 2: Exploring Classful Routing	128	(4)
Solution to Task 3: Exploring Classless Forwarding	132	(2)
Solution to Task 4: Optimizing Classless Routes for Scalability	134	(3)
Exercise Verification	137	(1)
Review Questions	137	(6)
Chapter 3 Configuring Enhanced Interior Gateway Routing Protocol	143	(76)
EIGRP Overview	143	(4)
EIGRP Terminology	146	(1)
EIGRP Operation	147	(18)
EIGRP Packets	148	(1)
EIGRP Hello Packets	148	(1)
EIGRP Neighbors	149	(4)
Neighbor Table	150	(1)
EIGRP Reliability	151	(1)
Topology Table	152	(1)
Initial Route Discovery	153	(1)
Route Selection	154	(3)
EIGRP Metric Calculation	154	(2)
EIGRP Metric Calculation Example	156	(1)
Routing Table and EIGRP DUAL	157	(8)
Advertised Distance and Feasible Distance	157	(1)
Successor and Feasible Successor	158	(3)
DUAL Example	161	(4)
Configuring and Verifying EIGRP	165	(35)
Basic EIGRP Configuration	166	(3)
Basic EIGRP Configuration Example	167	(1)
EIGRP Configuration Example Using the Wildcard Mask	168	(1)
Configuring EIGRP Default Routes	169	(1)
Route Summarization	170	(3)
Configuring Summarization	172	(1)
EIGRP Load Balancing	173	(2)
EIGRP and WAN Links	175	(5)
EIGRP Link Utilization	176	(1)
Examples of EIGRP on WAN	177	(3)
Using EIGRP in a Scalable Internetwork	180	(12)
Tiered Network Design	181	(1)
Active and Stuck in Active	181	(1)
Update and Query Example	182	(3)
Limiting the EIGRP Query Range	185	(6)
EIGRP Scalability Rules	191	(1)
Verifying EIGRP Operation	192	(10)
show ip route for EIGRP Example	193	(2)
show ip protocols Example	195	(1)
show ip eigrp topology Example	196	(1)
debug eigrp packets Examples	197	(2)
debug ip eigrp Examples	199	(1)
Summary	200	(2)
Reference	202	(1)
Configuration Exercise: Configuring and Tuning EIGRP	202	(4)
Objectives	203	(1)
Visual Objective	203	(1)
Command List	203	(1)
Task 1: Cleaning Up	204	(1)
Task 2: Configuring Basic EIGRP	204	(1)
Task 3: Configuring EIGRP Summarization	205	(1)
Task 4: Configuring the EIGRP Stub	205	(1)
Task 5: Configuring the EIGRP Default Route	206	(1)
Exercise Verification	206	(1)
Solutions to the Configuration Exercise: Configuring and Tuning EIGRP	206	(9)
Solution to Task 1: Cleaning Up	206	(1)
Solution to Task 2: Configuring Basic EIGRP	207	(3)
Solution to Task 3: Configuring EIGRP Summarization	210	(1)
Solution to Task 4: Configuring the EIGRP Stub	211	(3)
Solution to Task 5: Configuring the EIGRP Default Route	214	(1)
Exercise Verification	215	(1)
Review Questions	215	(4)
Chapter 4 Configuring the Open Shortest Path First Protocol in a Single Area	219	(56)
OSPF Protocol Overview	219	(7)
Link-State Routing Protocols	219	(2)
Defining an OSPF Area	221	(2)
OSPF Areas	222	(1)
Defining OSPF Adjacencies	223	(1)
OSPF Calculation	224	(2)
OSPF Packet Types	226	(9)
OSPF Neighbor Adjacency Establishment: Hello	228	(1)
Exchange Process and OSPF Neighbor Adjacency States	229	(4)
Maintaining Routing Information	232	(1)
OSPF Link-State Sequence Numbers	233	(2)
Configuring Basic OSPF for a Single Area	235	(6)
Verifying OSPF Operations	236	(2)
Manipulating OSPF Router ID	238	(3)
Loopback Interfaces	239	(2)
OSPF Network Types	241	(13)
Adjacency Behavior for a Point-to-Point Link	241	(1)
Adjacency Behavior for a Broadcast Network	241	(3)
Electing a DR	242	(2)
Adjacency Behavior for a Nonbroadcast Multiaccess Network	244	(1)
Frame Relay Topologies	244	(2)
OSPF Over NBMA Topology Modes of Operation	245	(1)
OSPF Commands for NBMA Frame Relay	246	(7)
Configuration in Nonbroadcast Mode	247	(4)
Using Subinterfaces	251	(2)
The debug ip ospf adj Command	253	(1)
OSPF Over NBMA Topology Summary	254	(1)
Summary	254	(1)
References	255	(1)
Configuration Exercise: Configuring and Examining OSPF in a Single Area	255	(4)
Exercise Objective	256	(1)
Visual Objective	256	(1)
Command List	256	(1)
Task 1: Cleaning Up	257	(1)
Task 2: Configuring Single-Area OSPF Within Your Pod	257	(1)
Task 3: Understanding the OSPF Process	258	(1)
Task 4: Understanding OSPF DR and BDR Election	258	(1)
Exercise Verification	259	(1)
Solution to Configuration Exercise: Configuring and Examining OSPF in a Single Area	259	(11)
Solution to Task 1: Cleaning Up	259	(1)
Solution to Task 2: Configuring Single-Area OSPF Within Your Pod	260	(6)
Solution to Task 3: Understanding the OSPF Process	266	(3)
Solution to Task 4: Understanding OSPF DR and BDR Election	269	(1)
Exercise Verification	270	(1)
Review Questions	270	(5)
Chapter 5 Interconnecting Multiple Open Shortest Path First Areas	275	(80)
Types of OSPF Routers and LSAs	275	(80)
Types of OSPF Routers	275	(3)
OSPF LSA Types	278	(4)
LSA Type 1: Router LSA	279	(1)
LSA Type 2: Network LSA	280	(1)
LSA Type 3: Summary LSA	280	(1)
LSA Type 4: Summary LSA	281	(1)
LSA Type 5: External LSA	281	(1)
Interpreting the OSPF LSDB and Routing Table	282	(4)
OSPF LSDB	282	(1)
OSPF Routing Table and Types of Routes	283	(2)
Calculating the Costs of El and E2 Routes	284	(1)
Changing the Cost Metric	285	(1)
OSPF Route Summarization Techniques	286	(7)
OSPF Route Summarization Commands	288	(2)
Route Summarization Configuration Example at the ABR	289	(1)
Route Summarization Configuration Example at the ASBR	290	(1)
Creating a Default Route in OSPF	290	(3)
The default-information originate Command	291	(2)
OSPF Special Area Types	293	(10)
Stubby Areas	295	(2)
Totally Stubby Areas	297	(3)
NSSAs	300	(3)
OSPF Virtual Links	303	(5)
Configuring OSPF Virtual Links	304	(3)
Verifying OSPF Virtual Link Operation	307	(1)
Summary	308	(1)
References	309	(1)
Configuration Exercise 5-1: Configuring OSPF for Multiple Areas and Frame Relay NBMA	309	(3)
Objectives	310	(1)
Visual Objective	310	(1)
Command List	310	(1)
Task: Using the Nonbroadcast Network Type Over Frame Relay	311	(1)
Exercise Verification	312	(1)
Configuration Exercise 5-2: Configuring OSPF for Multiple Areas and Frame Relay Point-to-Multipoint and Point-to-Point	312	(4)
Objectives	312	(1)
Visual Objective	312	(1)
Command List	313	(1)
Task 1: Cleaning Up	314	(1)
Task 2: Configuring OSPF for Multiple Areas and Frame Relay Point-to-Multipoint and Point-to-Point	314	(2)
Exercise Verification	316	(1)
Configuration Exercise 5-3: Understanding the OSPF Database and Tuning OSPF	316	(3)
Objectives	316	(1)
Visual Objective	316	(1)
Command List	316	(2)
Task 1: Examining the OSPF Database	318	(1)
Task 2: OSPF Area Route Summarization	318	(1)
Exercise Verification	319	(1)
Configuration Exercise 5-4: Configuring the OSPF Virtual Link	319	(3)
Objectives	319	(1)
Visual Objective	319	(1)
Command List	320	(1)
Task: Configuring the OSPF Virtual Link	321	(1)
Exercise Verification	321	(1)
Solution to Configuration Exercise 5-1: Configuring OSPF for Multiple Areas and Frame Relay NBMA	322	(3)
Solution to Task: Using the Nonbroadcast Network Type Over Frame Relay	322	(3)
Exercise Verification	325	(1)
Solution to Configuration Exercise 5-2: Configuring OSPF for Multiple Areas and Frame Relay Point-to-Multipoint and Point-to-Point	325	(8)
Solution to Task 1: Cleaning Up	325	(1)
Solution to Task 2: Configuring OSPF for Multiple Areas and Frame Relay Point-to-Multipoint and Point-to-Point	326	(7)
Exercise Verification	333	(1)
Solution to Configuration Exercise 5-3: Understanding the OSPF Database and Tuning OSPF	333	(12)
Solution to Task 1: Examining the OSPF Database	334	(4)
Solution to Task 2: OSPF Area Route Summarization	338	(7)
Exercise Verification	345	(1)
Solution to Configuration Exercise 5-4: Configuring the OSPF Virtual Link	345	(6)
Solution to Task: Configuring the OSPF Virtual Link	345	(5)
Exercise Verification	350	(1)
Review Questions	351	(4)
Chapter 6 Configuring the Intermediate System-to-Intermediate System Protocol	355	(56)
Overview of IS-IS Routing and CLNS	355	(10)
IS-IS Routing	356	(4)
Integrated IS-IS Design Principles	358	(1)
Issues with Integrated IS-IS	358	(1)
ES-IS Discovery Protocol Operations	359	(1)
OSI Routing Levels	360	(2)
IS-IS Level 0 Routing	360	(1)
IS-IS L1 Routing	361	(1)
IS-IS L2 Routing	361	(1)
IS-IS L3 Routing	361	(1)
Comparing IS-IS and OSPF	362	(3)
Similarities Between IS-IS and OSPF	363	(1)
Differences Between Integrated IS-IS and OSPF	363	(2)
Understanding CLNS Addressing	365	(5)
NSAP Addresses	365	(3)
IS-IS NSAP Address Structure	366	(2)
NET Addresses	368	(2)
Basic Operations of IS-IS in a CLNS Environment	370	(12)
Intra-Area and Interarea Addressing and Routing	370	(3)
IS-IS Routing Levels	372	(1)
IS-IS PDUs	373	(3)
Link-State Packets	374	(2)
Topologies	376	(3)
Broadcast Networks	376	(2)
Point-to-Point Networks	378	(1)
Link-State Database Synchronization and Adjacency	379	(3)
Flooding Subprotocol	379	(1)
LSDB Synchronization	379	(3)
Basic Operations of Integrated IS-IS in an IP and CLNS Environment	382	(8)
Integrated IS-IS NET Addressing	382	(1)
Criteria and Path Selection for IS-IS Area Routing	383	(2)
Building an IP Forwarding Database	384	(1)
Using show Commands	385	(5)
Troubleshooting Commands: CLNS	385	(1)
Troubleshooting Commands: CLNS and IS-IS	385	(1)
OSI Intra-Area and Interarea Routing Example	386	(4)
Configuring Basic Integrated IS-IS	390	(7)
Integrated IS-IS Configuration Steps	390	(3)
Step 1: Define the Area and Addressing	391	(1)
Step 2: Enable IS-IS on the Router	391	(1)
Step 3: Configure the NET	392	(1)
Step 4: Enable Integrated IS-IS	392	(1)
Optimizing IS-IS	393	(2)
Changing the IS-IS Router Level	393	(1)
Changing the IS-IS Interface Level	393	(1)
Changing the IS-IS Metric	394	(1)
Tuning IS-IS Example	394	(1)
Scalable IS-IS in Large Networks and IP Summarization	395	(1)
Verifying IS-IS Configuration and Troubleshooting IS-IS Operations	396	(1)
Summary	397	(1)
References	397	(1)
Configuration Exercise: Configuring Integrated IS-IS in Multiple Areas	397	(4)
Objectives	398	(1)
Visual Objective	398	(1)
Command List	399	(1)
Task 1: Cleaning Up and Preparing	399	(1)
Task 2: Configuring Integrated IS-IS in Multiple Areas	399	(1)
Exercise Verification	400	(1)
Solution to Configuration Exercise: Configuring Integrated IS-IS in Multiple Areas	401	(6)
Solution to Task 1: Cleaning Up and Preparing	401	(1)
Solution to Task 2: Configuring Integrated IS-IS in Multiple Areas	401	(5)
Exercise Verification	406	(1)
Review Questions	407	(4)
Chapter 7 Manipulating Routing Updates	411	(96)
Migrating to Multiple IP Routing Protocols	411	(30)
Considerations When Migrating to Another Routing Protocol	412	(1)
Planning for a New IP Address Allocation	413	(2)
Migrating to a New IP Address Space	415	(2)
Configuring a Secondary IP Address	416	(1)
Migrating to a New Routing Protocol	417	(1)
Redistribution Overview	418	(3)
Redistribution Implementation Considerations	421	(5)
Selecting the Best Route	422	(1)
Administrative Distance	422	(1)
Seed Metrics	423	(2)
Redistribution Techniques	425	(1)
Configuring Redistribution	426	(15)
The redistribute Command for RIP	428	(1)
The redistribute Command for OSPF	429	(2)
The redistribute Command for EIGRP	431	(2)
The redistribute Command for IS-IS	433	(2)
The default-metric Command	435	(1)
The passive-interface Command	436	(2)
Route Redistribution Example	438	(3)
Controlling Routing Update Traffic	441	(14)
Static and Default Routes	442	(3)
Using Distribute Lists to Control Routing Updates	445	(5)
Distribute List Processing	445	(1)
Configuring Distribute Lists	446	(2)
IP Route Filtering Configuration Example	448	(1)
Controlling Redistribution with Distribute Lists	449	(1)
Using Route Maps to Control Routing Updates	450	(5)
Route Map Operation	450	(1)
Route Map Applications	451	(1)
Configuring Route Maps	451	(3)
Using Route Maps with Redistribution	454	(1)
Route Maps to Avoid Route Feedback	454	(1)
Using Administrative Distance to Influence the Route-Selection Process	455	(10)
Administrative Distance Review	456	(1)
Modifying Administrative Distance	457	(2)
An Example of Redistribution Using Administrative Distance	459	(5)
Verifying Redistribution Operation	464	(1)
Policy-Based Routing	465	(11)
Configuring Policy-Based Routing	466	(5)
Policy-Based Routing match Commands	466	(1)
Policy-Based Routing set Commands	467	(3)
Configuring Policy-Based Routing on an Interface	470	(1)
Verifying Policy-Based Routing	471	(1)
Policy-Based Routing Examples	471	(7)
Using Policy-Based Routing When Connecting Two ISPs	471	(3)
Using Policy-Based Routing Based on Source Address	474	(2)
Summary	476	(2)
Reference	478	(1)
Configuration Exercise 7-1: Configuring Basic Redistribution	478	(4)
Objectives	478	(1)
Visual Objective	479	(1)
Command List	479	(1)
Task 1: Cleaning Up	480	(1)
Task 2: Setting Up the Routing Protocols	480	(1)
Task 3: Configuring Basic Redistribution	481	(1)
Task 4: Filtering Routing Updates	481	(1)
Exercise Verification	482	(1)
Configuration Exercise 7-2: Tuning Basic Redistribution	482	(2)
Objectives	482	(1)
Visual Objective	482	(1)
Command List	483	(1)
Task: Tuning Basic Redistribution with Route Maps	484	(1)
Exercise Verification	484	(1)
Configuration Exercise 7-3: Configuring Policy-Based Routing	484	(3)
Objectives	484	(1)
Visual Objective	484	(1)
Command List	485	(1)
Task: Configuring PBR	486	(1)
Exercise Verification	487	(1)
Solution to Configuration Exercise 7-1: Configuring Basic Redistribution	487	(9)
Solution to Task 1: Cleaning Up	487	(1)
Solution to Task 2: Setting Up the Routing Protocols	488	(2)
Solution to Task 3: Configuring Basic Redistribution	490	(3)
Solution to Task 4: Filtering Routing Updates	493	(3)
Exercise Verification	496	(1)
Solution to Configuration Exercise 7-2: Tuning Basic Redistribution	496	(3)
Solution to Task: Tuning Basic Redistribution with Route Maps	496	(2)
Exercise Verification	498	(1)
Solution to Configuration Exercise 7-3: Configuring Policy-Based Routing	499	(4)
Solution to Task: Configuring PBR	499	(3)
Exercise Verification	502	(1)
Review Questions	503	(4)
Chapter 8 Configuring Basic Border Gateway Protocol	507	(98)
BGP Overview	507	(10)
Autonomous Systems	507	(2)
BGP Use Between Autonomous Systems	509	(2)
Comparison with Other Scalable Routing Protocols	511	(1)
Policy-Based Routing	512	(1)
When to Use BGP	513	(1)
When Not to Use BGP	514	(3)
Static Routes	514	(2)
Static Route Examples	516	(1)
BGP Terminology and Concepts	517	(19)
BGP Characteristics	517	(3)
BGP Path Vector	519	(1)
BGP Neighbor Relationships	520	(2)
External BGP Neighbors	520	(1)
Internal BGP Neighbors	521	(1)
BGP Tables	522	(1)
BGP Message Types	523	(2)
BGP Attributes	525	(11)
Well-Known Attributes	526	(1)
Optional Attributes	526	(1)
Defined BGP Attributes	527	(9)
BGP Operation	536	(9)
BGP Split Horizon and Full Mesh of IBGP Neighbors	536	(5)
BGP Split Horizon	537	(1)
IGP Adjacencies	537	(1)
IBGP Full Mesh	538	(1)
BGP Partial-Mesh and Full-Mesh Examples	538	(3)
BGP Synchronization	541	(2)
The Route Selection Decision Process	543	(2)
Configuring BGP	545	(19)
Peer Groups	546	(1)
Entering BGP Configuration Mode	547	(1)
Defining BGP Neighbors	547	(2)
Defining the Source IP Address	549	(3)
EBGP Multihop	552	(1)
Changing the Next-Hop Attribute	553	(2)
Defining the Networks That BGP Advertises	555	(1)
Disabling BGP Synchronization	556	(1)
Resetting BGP Sessions	557	(3)
BGP Configuration Examples	560	(1)
Basic BGP Example	560	(4)
Peer Group Example	560	(2)
No Synchronization Example	562	(2)
Verifying and Troubleshooting BGP	564	(7)
show ip bgp Command Output Example	564	(2)
show ip bgp neighbors Command Output Example	566	(1)
show ip bgp summary Command Output Example	567	(1)
debug ip bgp updates Command Output Example	568	(1)
Understanding and Troubleshooting BGP Neighbor States	569	(5)
Debugging Session Establishment	569	(1)
Idle State Troubleshooting	570	(1)
Active State Troubleshooting	571	(1)
Established State	571	(1)
Summary	571	(3)
References	574	(1)
Configuration Exercise 8-1: Configuring EBGP and IBGP for Two Neighbors	574	(5)
Objectives	574	(1)
Visual Objective	575	(1)
Command List	575	(1)
Task 1: Cleaning Up	576	(1)
Task 2: Configuring BGP	577	(1)
Exercise Verification	578	(1)
Configuration Exercise 8-2: Configuring Full-Mesh IBGP	579	(3)
Objectives	579	(1)
Visual Objective	579	(1)
Command List	580	(1)
Task: Configuring Full-Mesh IBGP	580	(2)
Exercise Verification	582	(1)
Solution to Configuration Exercise 8-1: Configuring EBGP and IBGP for Two Neighbors	582	(9)
Solution to Task 1: Cleaning Up	583	(1)
Solution to Task 2: Configuring BGP	584	(7)
Exercise Verification	591	(1)
Solution to Configuration Exercise 8-2: Configuring Full-Mesh IBGP	591	(10)
Solution to Task: Configuring Full-Mesh IBGP	592	(8)
Exercise Verification	600	(1)
Review Questions	601	(4)
Chapter 9 Advanced Border Gateway Protocol Configuration	605	(58)
BGP Route Summarization	605	(9)
CIDR and Aggregate Addresses	605	(2)
Network Boundary Summarization	607	(1)
BGP Route Summarization Using the network Command	608	(3)
Cautions When Using the network Command for Summarization	609	(2)
Creating a Summary Address in the BGP Table Using the aggregate-address Command	611	(3)
Basic BGP Path Manipulation Using Route Maps	614	(13)
BGP Path Manipulation	614	(4)
The Route Selection Decision Process	615	(3)
Setting Local Preference	618	(4)
Changing Local Preference for All Routes	618	(1)
Local Preference Example	619	(1)
Changing Local Preference Using Route Maps	620	(2)
Setting the MED with Route Maps	622	(4)
Changing the MED for All Routes	622	(1)
Changing the MED Using Route Maps	623	(3)
Configuring Weight	626	(1)
Multihoming Design Options	627	(10)
Types of Multihoming	627	(1)
Default Routes from All Providers	628	(1)
A Partial Routing Table from Each Provider	629	(2)
A Full Routing Table from Each Provider	631	(4)
Example of Full Routes from All Providers	631	(1)
OSPF and BGP Example	632	(1)
Filtering BGP Advertisements to ISPs	633	(2)
More Multihoming Examples	635	(2)
Multihoming Example with No Special Tuning	635	(1)
Multihoming Example with Weight Attributes Changed	636	(1)
Redistribution with IGPs	637	(2)
Advertising Networks into BGP	638	(1)
Advertising from BGP into an IGP	638	(3)
ISP: No Redistribution from BGP into IGP Is Required	638	(1)
Non-ISP: Redistribution from BGP into IGP Might Be Required	639	(1)
Summary	639	(2)
References	641	(1)
Configuration Exercise 9-1: Configuring BGP Route Summarization and Examining the BGP Path-Selection Process	641	(2)
Objectives	641	(1)
Visual Objective	642	(1)
Command List	642	(1)
Task: Configuring BGP Summarization and Investigating the Path-Selection Process	643	(1)
Exercise Verification	643	(1)
Configuration Exercise 9-2: BGP Path Manipulation Using MED and Local Preference with Route Maps	643	(4)
Objectives	644	(1)
Visual Objective	644	(1)
Command List	644	(1)
Task: Using MED and Local Preference with Route Maps for BGP Path Manipulation	645	(2)
Exercise Verification	647	(1)
Solution to Configuration Exercise 9-1: Configuring BGP Route Summarization and Examining the BGP Path-Selection Process	647	(3)
Solution to Task: Configuring BGP Summarization and Investigating the Path-Selection Process	648	(2)
Exercise Verification	650	(1)
Solution to Configuration Exercise 9-2: BGP Path Manipulation Using MED and Local Preference with Route Maps	650	(1)
Solution to Task: Using MED and Local Preference with Route Maps for BGP Path Manipulation	651	(9)
Exercise Verification	660	(1)
Review Questions	660	(3)
Appendix A Job Aids and Supplements	663	(100)
Supplement 1: IPv4 Addressing	663	(41)
IPv4 Addresses and Subnetting Job Aid	663	(2)
Decimal-to-Binary Conversion Chart	665	(2)
IPv4 Addressing Review	667	(6)
Converting IP Addresses Between Decimal and Binary	667	(1)
Determining an IP Address Class	668	(1)
Extending an IP Classful Address Using Subnet Masks	669	(1)
Calculating a Subnet Mask	670	(1)
Calculating the Networks for a Subnet Mask	671	(1)
Using Prefixes to Represent a Subnet Mask	672	(1)
IPv4 Access Lists	673	(21)
IP Access List Overview	673	(1)
IP Standard Access Lists	674	(8)
IP Extended Access Lists	682	(9)
Restricting Virtual Terminal Access	691	(2)
Verifying Access List Configuration	693	(1)
IP Features	694	(8)
IP Unnumbered Serial Interfaces	694	(1)
IP Helper Addresses	695	(5)
HSRP	700	(2)
Supplement 1 Review Questions	702	(2)
Supplement 2: EIGRP	704	(5)
IPX and EIGRP	704	(1)
Route Selection	704	(1)
Redistribution and Metric Handling	704	(1)
Reducing SAP Traffic	705	(1)
AppleTalk and EIGRP	705	(1)
Route Selection	705	(1)
Metric Handling	705	(1)
Redistribution	705	(1)
EIGRP Configuration Examples	706	(3)
Supplement 3: OSPF	709	(8)
OSPF Not-So-Stubby Areas	709	(3)
Configuring an NSSA	710	(2)
OSPF Single-Area Configuration Examples	712	(2)
OSPF Multiarea Configuration Examples	714	(3)
Supplement 4: IS-IS	717	(12)
IS-IS TLVs	717	(2)
TLV Encoding	718	(1)
IS-IS PDU and TLV Definitions	718	(1)
TLVs Implemented by Cisco	718	(1)
Configuring IS-IS Authentication	719	(6)
Interface Authentication	720	(1)
Area Authentication	721	(2)
Domain Authentication	723	(2)
IS-IS Route Leaking	725	(4)
Using Route Leaking	726	(1)
Configuring Route Leaking	727	(2)
Supplement 5: BGP	729	(25)
BGP Configuration Output Examples	729	(3)
Example of BGP/RIP Configuration for P1R1	730	(1)
Sample RIP Configuration for P1R2	731	(1)
Sample Output of show ip route for P1R1	731	(1)
Sample Output of show ip route for P1R2	732	(1)
Distribute Lists	732	(2)
Extended Access List Use in a Distribute List	734	(1)
Policy Control and Prefix Lists	734	(7)
Prefix List Characteristics	735	(1)
Filtering with Prefix Lists	736	(1)
Configuring Prefix Lists	736	(3)
Prefix List Sequence Numbers	739	(1)
Prefix List Example	740	(1)
Verifying Prefix Lists	740	(1)
Verifying Prefix Lists Example	741	(1)
Communities	741	(5)
Community Attribute	742	(1)
Setting and Sending the Communities Configuration	742	(2)
Using the Communities Configuration	744	(2)
Route Reflectors	746	(8)
Route Reflector Benefits	747	(1)
Route Reflector Terminology	748	(1)
Route Reflector Design	749	(1)
Route Reflector Design Example	749	(1)
Route Reflector Operation	750	(1)
Route Reflector Migration Tips	750	(2)
Route Reflector Configuration	752	(1)
Route Reflector Example	753	(1)
Verifying Route Reflectors	753	(1)
Supplement 6: Route Optimization	754	(15)
Examples of Redistribution in a Nonredundant Configuration	754	(3)
Example of Redistribution Between EIGRP and OSPF	754	(3)
Miscellaneous Redistribution Configuration Examples	757	(12)
IGRP Redistribution Example	757	(1)
RIP/OSPF Redistribution Example	758	(1)
Redistribution Example Using the Default Metric	759	(1)
Redistribution Example Using Filtering	760	(1)
Redistribution Example Using Filtering and the Default Metric	760	(3)
Appendix B Router Password Recovery Procedure	763	(6)
Appendix C Summary of ICND Router and Switch Commands	769	(20)
Summary of ICND Router Commands	769	(13)
General Commands	769	(4)
Comparison of Configuration File Commands	773	(1)
General Configuration Commands	773	(1)
General Interface Configuration Commands	774	(1)
General Internet Protocol (IP) Commands	775	(2)
IP Configuration Commands	777	(1)
General Internetwork Packet Exchange (IPX) Commands	778	(1)
IPX Configuration Commands	778	(1)
General AppleTalk Commands	779	(1)
AppleTalk Configuration Commands	779	(1)
General WAN Commands	780	(1)
WAN Configuration Commands	781	(1)
Summary of ICND Switch IOS Commands	782	(7)
General Switch Commands	783	(2)
General Switch Configuration Commands	785	(1)
General Switch Interface Configuration Commands	786	(3)
Appendix D Summary of BSCI Router Commands	789	(16)
General Commands	789	(1)
Comparison of Configuration File Commands	790	(1)
General Configuration Commands	791	(1)
General Interface Configuration Commands	792	(1)
General IP Commands	792	(4)
IP Configuration Commands	796	(6)
General WAN Commands	802	(1)
WAN Configuration Commands	802	(1)
CLNS Configuration Commands	802	(3)
Appendix E Open System Interconnection (OSI) Reference Model	805	(12)
Characteristics of the OSI Layers	806	(1)
Protocols	807	(1)
OSI Model and Communication Between Systems	807	(3)
Interaction Between OSI Model Layers	807	(1)
OSI Layer Services	808	(1)
OSI Model Layers and Information Exchange	809	(1)
Information Exchange Process	809	(1)
OSI Model's Physical Layer	810	(1)
OSI Model's Data Link Layer	810	(1)
OSI Model's Network Layer	811	(1)
OSI Model's Transport Layer	811	(1)
OSI Model's Session Layer	812	(1)
OSI Model's Presentation Layer	812	(1)
OSI Model's Application Layer	813	(1)
Information Formats	813	(4)
Appendix F Common Requests for Comments	817	(6)
Appendix G Answers to Review Questions	823	(52)
Appendix H Configuration Exercise Equipment Requirements and Initial Configurations	875	(22)
Configuration Exercise Equipment Requirements	875	(2)
Configuration Exercise Setup Diagram	877	(1)
Configuration Exercise Equipment Wiring	878	(1)
Backbone Router Configurations	879	(9)
BBR1 Configuration	880	(2)
BBR2 Configuration	882	(3)
Frame_Switch Configuration	885	(3)
TFTP Server and Pod Router Configurations	888	(9)
P1R1 Configuration	888	(1)
P1R2 Configuration	889	(1)
P1R3 Configuration	890	(1)
P1R4 Configuration	891	(1)
P2R1 Configuration	892	(1)
P2R2 Configuration	893	(1)
P2R3 Configuration	894	(1)
P2R4 Configuration	895	(2)
Glossary	897	(42)
Index	939