Cisco 642-661 Valid Dumps - CCIP Configuring BGP on Cisco Routers (BGP)

Updated: Sep 14, 2026
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Cisco 642-661 Exam Syllabus Topics:

SectionObjectives
Topic 1: Advanced BGP Operations- Route aggregation and summarization
  • 1. CIDR and aggregation strategies
    - BGP redistribution
    • 1. Redistribution between BGP and IGP protocols
      Topic 2: BGP Fundamentals- BGP protocol overview and characteristics
      • 1. eBGP vs iBGP differences
        • 2. Path vector behavior and BGP basics
          Topic 3: Scalability Features- iBGP scalability
          • 1. Confederations
            • 2. Route reflectors
              Topic 4: BGP Configuration- Basic BGP setup on Cisco routers
              • 1. Network statements and route advertisement
                • 2. Neighbor relationships and peering
                  Topic 5: Route Selection and Policy Control- BGP path selection process
                  • 1. AS-path and weight manipulation
                    • 2. Local preference and MED attributes
                      - Policy implementation
                      • 1. Route maps and filtering (prefix lists, AS-path filters)
                        Topic 6: Troubleshooting and Security- Security mechanisms
                        • 1. Prefix filtering and route validation
                          - BGP troubleshooting techniques
                          • 1. Neighbor state issues and session debugging

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