Transcript Routing - Dian2008's Weblog

Routing
Working at a Small-to-Medium Business or ISP –
Chapter 6
© 2007 Cisco Systems, Inc. All rights reserved.
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Objectives

Describe the purpose and function of dynamic routing
and the protocols used to implement it.

Configure RIPv2 dynamic routing using the Cisco
IOS.

Describe the use of exterior routing protocols across
the Internet.

Enable BGP on a customer site router.
© 2007 Cisco Systems, Inc. All rights reserved.
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Dynamic Routing and Protocols
 Describe the purpose and function of routing and the
required protocols used.
© 2007 Cisco Systems, Inc. All rights reserved.
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3
How Routers use Routes
 Describe the purpose of destination, mask, gateway,
and metric in a routing table route.
© 2007 Cisco Systems, Inc. All rights reserved.
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4
Static and Default Routes
 Describe the syntax and function of manuallyconfigured routes.
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5
Dynamic Routing and Protocols
 Compare and contrast the distance vector and link
state protocols and identify common types of each.
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Dynamic Routing and Protocols
 Describe and compare the RIP, EIGRP and OSPF
routing protocols
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Dynamic Routing and Protocols
 Describe the routing protocols that are most commonly
deployed in an organization’s network for routing
internally.
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Dynamic Routing and Protocols
 Describe and implement RIP routing on an integrated
router.
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Exterior Routing Protocols Across the Internet
 Describe an Autonomous System
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Exterior Routing Protocols Across the Internet
 Describe the difference between interior and exterior
routing protocols
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Exterior Routing Protocols Across the Internet
 Describe how packets are routed across the Internet
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Exterior Routing Protocols Across the Internet
 Describe how ISPs use exterior routing protocols to
forward traffic
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Exterior Routing Protocols Across the Internet
 Implement BGP using a predefined configuration and
verify its operation
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Summary
 All routers make routing decisions by looking up information stored
in their routing tables.
 Routes can be statically assigned by an administrator, or
dynamically learned by the router via a routing protocol.
 Routing protocols use either distance-vector or link-state
algorithms to calculate the best routes to each destination.
 Criteria such as ease of management, ease of configuration, and
efficiency must be considered when selecting a routing protocol for
use within an organization.
 Organizations are also called Autonomous Systems.
 Between Autonomous Systems, Exterior Gateway routing
protocols control the flow of traffic.
 ISPs handle Internet traffic through the use of routing policies.
© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
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© 2007 Cisco Systems, Inc. All rights reserved.
Cisco Public
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