Cisco 642-661 BGP Certification ExamCisco Configuring BGP on Cisco Routers Exam 642-661 ... Continue Below To CCIP Exam Information and Cisco Articles. The real Cisco CCIP 642-661 BGP Exam has a duration of 90 minutes and 50 - 60 questions to complete.
The Cisco BGP 642-661 exam is a qualifying exam for the CCIP certification. The Cisco BGP 642-661 certification exam tests material covered under the Configuring BGP on Cisco Routers (BGP) v 3.1 course. The Cisco BGP 642-661 exam assesses a candidate's understanding of the theory of BGP, ability to configure BGP on Cisco IOS routers, and skills with troubleshooting on BGP. As a routing protocol, BGP is one of the underlying foundations of the Internet and new-world technologies. All these objectives are designated from the Cisco.com website. Please note that the CCIP BGP 642-661 exam topics and objectives may change without notice, since technologies are always changing.
CCIP 642-661 Exam Objectives:
BGP Overview
Introduction to BGP
- Given a network scenario, identify appropriate BGP usage and its limitations
BGP Session Establishment
- Given a typical BGP network scenario, describe the concept of BGP neighbors and the neighbor session establishment procedures
BGP Route Processing
- Given a diagram of an operational BGP network, describe interdomain route processing, route propagation and BGP path selection
Basic BGP Configuration
- Given a network consisting of multiple domains, successfully configure BGP
Monitoring and Troubleshooting BGP
- Given a configured BGP network, verify proper operation and perform the steps necessary to correct basic BGP configuration errors
Route Selection Using Policy Controls
Multi-Homed BGP Networks
- Given a customer scenario where connections to multiple ISPs must be supported, describe the need for influencing BGP route selection
AS-Path Filters
- Given a customer scenario where connections to multiple ISPs must be supported, successfully configure BGP to influence route selection using AS path filters
Prefix-List Filters
- Given a customer scenario where connections to multiple ISPs must be supported, successfully configure BGP to influence route selection using prefix-list filters
Outbound Route Filtering
- Given an operational BGP network, use outbound route filtering to minimize the impact of BGP routing updates on router resources
Route-Maps as BGP Filters
- Given a typical BGP network, correctly configure BGP to influence route selection using route maps
Implementing Changes in BGP Policy
- Given a typical BGP network, configure the route-refresh feature to minimize the impact of expediting BGP policy updates
Route Selection Using Attributes
BGP Path Attributes
- List BGP path attributes and functionality of each attribute
Influencing BGP Route Selection with Weights
- Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using the weight attribute
BGP Local Preference
- Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using the local preference attribute
BGP Multi-Exit-Discriminator (MED)
- Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using the Multi-Exit-Discriminator (MED) attribute
BGP Communities
- Given a customer scenario where multiple connections must be supported, successfully configure BGP to influence route selection using BGP community attributes
Customer-to-Provider Connectivity with BGP
Customer Connectivity Requirements
- Describe the requirements to connect customer networks to the Internet in a service provider environment
Static Routing Toward the Customer
- Given a service provider network, implement customer connectivity using static routing
BGP Customer Multi-Homed to a Single Service Provider
- Given a customer scenario where multiple connections to a single ISP must be supported, implement customer connectivity with BGP
BGP Customer Multi-Homed to Multiple Service Providers
- Given a customer scenario where connections to multiple ISPs must be supported, implement customer connectivity with BGP
BGP Transit Autonomous System
Transit Autonomous System Functions
- Describe the function of a transit autonomous system and the need for IBGP
IBGP and EBGP Interaction in a Transit AS
- Given a transit autonomous system, describe the interaction between EBGP and IBGP in relation to relevant BGP attributes
Packet Forwarding in Transit Autonomous Systems
- Describe the function of an IGP in forwarding packets through an autonomous system
Configuring a Transit Autonomous System
- Given a BGP network scenario, successfully configure an autonomous system to act as a transit backbone
Monitoring and Troubleshooting IBGP in Transit AS
- Given a configured BGP transit network, verify proper operation and perform the steps necessary to correct basic IBGP configuration errors
BGP Route Reflectors
Introduction to Route Reflectors
- Describe the function and operation of route reflectors in a BGP environment
Network Design with Route Reflectors
- Based upon established route reflector design rules, describe the concept of hierarchial route reflectors and their requirements
Configuring and Monitoring Route Reflectors
- Given an existing IBGP network, configure and verify proper operation of route reflectors to modify IBGGP split-horizon rules
Advanced BGP Configuration
Limiting the Number of Prefixes Received from a BGP Neighbor
- Given a typical BGP network, successfully configure BGP to limit the number of prefixes received from a neighbor
AS-Path Prepending
- Given a typical service provider network with connections to multiple autonomous systems, use AS-Path prepending to influence the return path selected by the neighboring autonomous systems
BGP Peer Group
- Given a typical BGP network, use BGP peer groups to share common configuration parameters between multiple BGP peers
BGP Route Flap Dampening
- Given a properly configured BGP network, use route flap dampening to minimize the impact of unstable routes
Scaling IGP and BGP in Service Provider Networks
Common Routing Issues in Service Provider Networks
- Describe common routing concerns of service provider networks
Optical Networking Designs
- Describe the scalability issues of using OSPF and IS-IS as interior gateway protocols in a service provider network and list solutions for each
Scaling BGP in Service Provider Networks
- Describe common scalability issues when using BGP in a service provider network and list solutions for each
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