View Larger Image	William R. Parkhurst Cisco Press, Paperback, Published January 2008, 370 pages, ISBN 1587055732
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• Networking/Communications : Networking
• * Series - Int/Adv Users : CCIE Professional Development Series

• Cisco Press

The comprehensive, hands-on guide to all Cisco IOS(r) Software BGP-4 commands

• The complete BGP-4 command reference
• invaluable for network designers, engineers, and architects
• Provides configuration, troubleshooting, and verification scenarios for every possible BGP-4 command supported by Cisco IOS Software that can be implemented on a minimum number of routers
• Groups BGP-4 commands by area of implementation route aggregation, auto-summary, route filtering, and route advertisement, just to name a few
• Provides clear and concise commentary on the initial release, purpose, syntax, and usage of each BGP-4 command
• Offers excellent CCIE certification preparation from one of the CCIE Program Managers
• Includes supplementary information on regular expressions, route map logic, and RFC 1771, A Border Gateway Protocol 4 (BGP-4)

Cisco BGP-4 Command and Configuration Handbook is an exhaustive practical reference to the commands contained within BGP-4. For each command/subcommand, author Bill Parkhurst explains the intended use or function and how to properly configure it. Then he presents scenarios to demonstrate every facet of the command and its use, along with appropriate show and debug commands. Through the discussion of functionality and the scenario-based configuration examples, Cisco BGP-4 Command and Configuration Handbook will help you gain a thorough understanding of the practical side of BGP-4.

Table of Contents

1. Route Aggregation.

aggregate-address address mask.

2. Auto-Summary.

auto-summary.

3. BGP-Specific Commands.

bgp always-compare-med. bgp bestpath as-path ignore. bgp bestpath med confed. bgp bestpath med missing-as-worst. bgp client-to-client reflection. bgp cluster-id 32-bit_id. bgp confederation identifier AS-number. bgp confederation peers 1_or_more_AS-numbers. bgp dampening. bgp dampening half-life. bgp dampening half-life reuse suppress max-suppress-time. bgp dampening route-map route-map-name. bgp default local-preference local-preference. bgp deterministic-med. bgp fast-external-fallover. bgp log-neighbor-changes. bgp router-id ip-address.

4. Default Information.

default-information originate. default-metric metric.

5. BGP Administrative Distance.

distance admin-distance ip-source-address ip-address-mask. distance admin-distance ip-source-address ip-address-mask ip-access-list-number. distance bgp external internal local.

6. BGP Route Filtering.

distribute-list.

7. BGP Maximum Paths.

maximum-paths number-of-paths.

8. Neighbor Configuration.

neighbor {ip-address | peer-group-name} advertise-map route-map-name1 non-exist-map route-map-name2. neighbor {ip-address | peer-group-name} advertisement-interval seconds. neighbor {ip-address | peer-group-name} default-originate. neighbor {ip-address | peer-group-name} description text. neighbor {ip-address | peer-group-name} distribute-list. neighbor {ip-address | peer-group-name} ebgp-multihop maximum-hop-count. neighbor {ip-address | peer-group-name} filter-list as-path-list-number in. neighbor {ip-address | peer-group-name} filter-list as-path-list-number out. neighbor {ip-address | peer-group-name} filter-list as-path-list-number weight weight. neighbor {ip-address | peer-group-name} maximum-prefix prefix-limit. neighbor {ip-address | peer-group-name} maximum-prefix prefix-limit warning-only. neighbor {ip-address | peer-group-name} maximum-prefix prefix-limit threshold-value. neighbor {ip-address | peer-group-name} maximum-prefix prefix-limit threshold-value warning-only. neighbor {ip-address | peer-group-name} next-hop-self. neighbor {ip-address | peer-group-name} password. neighbor peer-group-name peer-group. neighbor ip-address peer-group peer-group-name.

9. Route Advertisement.

network ip-address.

10. Route Redistribution.

redistribute protocol. redistribute protocol metric metric. redistribute protocol route-map route-map-name. redistribute protocol route-map route-map-name metric metric. redistribute protocol weight weight.

11. Address Summarization.

summary-address.

12. Synchronization.

synchronization.

13. BGP Timers.

timers bgp keepalive holdtime.

14. BGP show Commands.

show ip bgp. show ip bgp | begin line. show ip bgp prefix. show ip bgp community community-number(s). show ip bgp community-list community-list-number. show ip bgp dampened-paths. show ip bgp filter-list as-path-access-list. show ip bgp filter-list as-path-access-list | begin line. show ip bgp filter-list as-path-access-list | exclude line. show ip bgp filter-list as-path-access-list | include line. show ip bgp flap-statistics. show ip bgp flap-statistics prefix/mask-length. show ip bgp flap-statistics prefix. show ip bgp flap-statistics prefix mask. show ip bgp flap-statistics prefix mask longer-prefixes. show ip bgp flap-statistics filter-list list-number. show ip bgp flap-statistics quote-regexp quoted-line. show ip bgp flap-statistics regexp regular-expression. show ip bgp inconsistent-as. show ip bgp neighbors. show ip bgp neighbors ip-address advertised-routes. show ip bgp neighbors ip-address dampened-routes. show ip bgp neighbors ip-address flap-statistics. show ip bgp neighbors ip-address paths. show ip bgp neighbors ip-address paths line. show ip bgp neighbors ip-address received-routes. show ip bgp neighbors ip-address routes. show ip bgp paths. show ip bgp paths line. show ip bgp paths | begin line. show ip bgp paths | exclude line. show ip bgp paths | include line. show ip bgp peer-group. show ip bgp peer-group peer-group-name.

15. BGP clear Commands.

clear ip bgp • . clear ip bgp • soft. clear ip bgp • soft in. clear ip bgp • soft out. clear ip bgp • soft in out. clear ip bgp AS-number. clear ip bgp AS-number soft. clear ip bgp AS-number soft in. clear ip bgp AS-number soft out. clear ip bgp AS-number soft in out. clear ip bgp neighbor-ip-address. clear ip bgp peer-group peer-group-name. clear ip bgp dampening. clear ip bgp dampening prefix mask. clear ip bgp flap-statistics. clear ip bgp flap-statistics prefix mask. clear ip bgp flap-statistics filter-list list-number. clear ip bgp flap-statistics regexp regular-expression. clear ip bgp neighbor-ip-address flap-statistics.

16. BGP debug Commands.

debug ip bgp. debug ip bgp neighbor-ip-address updates. debug ip bgp neighbor-ip-address updates access-list-number. debug ip bgp dampening. debug ip bgp dampening access-list-number. debug ip bgp events. debug ip bgp keepalives. debug ip bgp in neighbor-ip-address updates. debug ip bgp in neighbor-ip-address updates access-list-number. debug ip bgp out neighbor-ip-address updates. debug ip bgp out neighbor-ip-address updates access-list-number. debug ip bgp updates. debug ip bgp updates in. debug ip bgp updates out. debug ip bgp updates access-list-number. debug ip bgp updates access-list-number in. debug ip bgp updates access-list-number out.

Appendix A: RFC 1771: Border Gateway Protocol 4 (BGP-4).

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