BGP 1st Edition by Iljitsch Van Beijnum – Ebook PDF Instant Download/Delivery:9780596002541,0596002548
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Product details:
ISBN 10:0596002548
ISBN 13: 9780596002541
Author: Iljitsch Van Beijnum
Border Gateway Protocol (BGP) is the routing protocol used to exchange routing information across the Internet. It makes it possible for ISPs to connect to each other and for end-users to connect to more than one ISP. BGP is the only protocol that is designed to deal with a network of the Internet’s size, and the only protocol that can deal well with having multiple connections to unrelated routing domains.This book is a guide to all aspects of BGP: the protocol, its configuration and operation in an Internet environment, and how to troubleshooting it. The book also describes how to secure BGP, and how BGP can be used as a tool in combating Distributed Denial of Service (DDoS) attacks. Although the examples throughout this book are for Cisco routers, the techniques discussed can be applied to any BGP-capable router.The topics include: Requesting an AS number and IP addresses Route filtering by remote ISPs and how to avoid this Configuring the initial BGP setup Balancing the available incoming or outgoing traffic over the available connections Securing and troubleshooting BGP BGP in larger networks: interaction with internal routing protocols, scalability issues BGP in Internet Service Provider networksThe book is filled with numerous configuration examples with more complex case studies at the end of the book to strengthen your understanding. BGP is for anyone interested in creating reliable connectivity to the Internet.
BGP 1st Table of contents:
1. The Internet, Routing, and BGP
Topology of the Internet
The NSFNET Backbone
Commercial Backbones and NAPs
The Rest of the World
Transit and Peering
Classification of ISPs
TCP/IP Design Philosophy
The IP Protocol
The Routing Table
Routing Protocols
Multihoming
2. IP Addressing and the BGP Protocol
IP Addresses
Subnetting and VLSM
CIDR: Classless Inter-Domain Routing
Interdomain Routing History
The BGP Protocol
Open Message
Update Message
Notification and Keepalive Messages
BGP States
Propagation of BGP Routes
How BGP Selects Routes
The route-selection algorithm
BGP tie-breaking rules
Multiprotocol BGP
Routing Multicast
IPv6
MBGP and MPLS VPNs
Interior Routing Protocols
RIP
IGRP and EIGRP
OSPF
IS-IS
Interaction Between Routing Protocols
3. Physical Design Considerations
Availability
Single points of failure
Common sense
Testing
Selecting ISPs
Bandwidth
Minimum Bandwidth Required
Burst Bandwidth and Queuing Delays
Calculating Bandwidth, Step by Step
Router Hardware
Host-Based Routers
Multilayer Switches
Memory and the Routing Table
Performance
Anticipating Growth
Failure Risks
Water
Power Failure
Building a Wide Area Network
The Likelihood of Concurrent Fiber Cuts
Network Topology Design
A Design Model
The Topology
4. IP Address Space and AS Numbers
The Different Types of Address Space
Provider-Independent Address Space
Your Own Provider Aggregatable Block
Address Space From an ISP
Requesting Address Space
Renumbering IP Addresses
The AS Number
Routing Registries
Routing Policy Specification Language
5. Getting Started with BGP
Enabling BGP
How to Announce an Address Block
Configuring the Router
Monitoring BGP
Clearing BGP Sessions
Soft Reconfiguration Inbound
Route Refresh
Filtering Routes
Filter Lists
Distribute Lists
Prefix Lists
Internal BGP
Enabling iBGP
Default Routes
Next Hop Processing
Synchronizing with the IGP
The Internal Network
Cisco’s Hot Standby Routing Protocol
Full BR2 Configuration
RPSL Routing Policy
Minimizing the Impact of Link Failures
eBGP Multihop
6. Traffic Engineering
Knowing Which Route Is Best
Finding High- and Low-Quality Routes
Is the Highest-Bandwidth Route Best?
Route Maps
Setting the Local Preference
Manipulating Inbound AS Paths
Inbound Communities
RPSL Routing Policy
BGP Load Balancing
Traffic Engineering for Incoming Traffic
Setting the MED
Prepending Outbound AS Paths
The Effect of AS Path Prepending
Setting Outbound Communities
Well-known communities
Common community actions
Influencing the Local Preference in Upstream ASes
Prepending the AS Path
Announcing More Specific Routes
Queuing, Traffic Shaping, and Policing
TCP Congestion Control
Slow start
Congestion avoidance
Fast retransmit and fast recovery
TCP Under Packet Loss and Delay Conditions
Queuing
First in, first out
Weighted fair queuing
Random early detect
Priority queuing
Custom queuing
Traffic Shaping and Rate Limiting
7. Security and Integrity of the Network
Passwords and Security
Telnet Versus SSH
Software
Software Lifecycle
Cisco IOS Versions
Protecting BGP
Avoiding Black Holes
Denial-of-Service Attacks
Identifying Attacking Packets
Tracking Down and Stopping the Source
Filtering DoS Traffic
Rate-Limiting DoS Traffic
Deflecting DoS Traffic Using BGP
8. Day-to-Day Operation of the Network
The Network Operations Center
The NOC and the Help Desk
Contacting the NOC
NOC Hardware Facilities
SNMP Management
Network-Management Suites
Product-Specific Management Software
Generic SNMP Tools
MRTG
BGP-4 Management Information Base
Router Names
General IP Network Management
Logging
Version Control
The Network Time Protocol
Scheduled Reloads
9. When Things Start to Go Down: Troubleshooting
Keeping a Clear Head
Managing the Troubleshooting Process
Dealing with Service Providers
Physical and Datalink Layer Problems
Broken Cable or Circuit
Link status and keepalives
Last input and loops
Line encoding and framing
Power and Equipment Failure
Poor Network Performance
Too much traffic
High CPU load
Ethernet collisions, broadcasts, and loops
Too many errors
CRC errors on ATM
Ethernet errors because of duplex or speed mismatch
Routing and Reachability Problems
BGP Session Is Down
BGP Session Is Unstable
Address Blocks Aren’t Announced
Filters Further Upstream
Outgoing Traffic Not Going Out
Black Holes
Is the Black Hole Incoming or Outgoing?
Transit from Nontransit AS
Traffic Is Filtered
Broken Upstream AS
Announcing Your Routes—With a Vengeance
DNS Problems
10. BGP in Larger Networks
Peer Groups
Using Loopback Addresses for iBGP
iBGP Scaling
Route Reflectors
Confederations
Dampening Route Flaps
OSPF as the IGP
Redistributing Routing Information
Redistributing static and connected into OSPF
Redistributing BGP into OSPF
Redistributing OSPF into BGP
Redistributing BGP into OSPF into BGP
Redistributing static and connected routes into BGP
Traffic Engineering in the Internal Network
Network Partitions
IP Tunnels and Path MTU Discovery
11. Providing Transit Services
Route Filters
Communities
Setting the Local Preference
Fine-Grained Path Prepending
Setting Communities on Incoming Routes
Community Overview In Routing Registry
Anti-DoS Measures
A Community for Black-Holing
Preemptive Anti-DoS Measures
Customers with Backup Connections
Simple Backups
More Complex Backups: BGP
Providing IPv6 and Multicast
IPv6 Multihoming
Multicast
12. Interconnecting with Other Networks
Peering
Internet Exchanges, NAPs, and MAEs
Connecting to an Internet Exchange
The Business of Peering
Where Does the Traffic Go?
The Politics of Peering
Multilateral Peering
Connecting to the Exchange
Connecting to More Exchange Points
Rejecting Unwanted Traffic
IX Subnet Problems
Talking to Other Network Operators
Exchange Point Future
A. Cisco Configuration Basics
IP Configuration Essentials
Source Routing and Directed Broadcasts
Antispoofing Filters
CIDR and VLSM
B. Binary Logic, Netmasks, and Prefixes
C. Notes on the IPv4 Address Spac
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