Chapter 6: IP Routing
Essentials
Instructor Materials
CCNP Enterprise: Core Networking
,Chapter 6 Content
This chapter covers the following content:
• Routing Protocol Overview - This section explains how different
routing protocols advertise and identify routes.
• Path Selection - This section explains the logic a router uses to identify
the best route and install it in the routing table.
• Static Routing - This section provides a brief overview of fundamental
static route concepts.
• Virtual Routing and Forwarding - This section explains the creation of
logical routers on a physical router.
© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 2
,Routing Protocol Overview
• A router is necessary to transmit packets between network segments.
• A router’s primary function is to move a packet from one network to a different
network.
• This section will cover distance vector algorithms, enhanced distance vector
algorithms, link state algorithms, and path vector algorithms.
© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 3
, Routing Protocol Overview
Routing Protocol Overview
• A router’s primary function is to move an IP packet from one network to a different
network.
• A router learns about nonattached networks through configuration of static routes or
through dynamic IP routing protocols.
• Dynamic IP routing protocols distribute network topology information between routers
and provide updates without intervention when a topology change in the network
occurs.
• With dynamic routing protocols, routers try to select the best loop-free path on which to
forward a packet to its destination IP address.
• A network of interconnected routers and related systems managed under a common
network administration is known as an autonomous system (AS), or a routing domain.
© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 4
Essentials
Instructor Materials
CCNP Enterprise: Core Networking
,Chapter 6 Content
This chapter covers the following content:
• Routing Protocol Overview - This section explains how different
routing protocols advertise and identify routes.
• Path Selection - This section explains the logic a router uses to identify
the best route and install it in the routing table.
• Static Routing - This section provides a brief overview of fundamental
static route concepts.
• Virtual Routing and Forwarding - This section explains the creation of
logical routers on a physical router.
© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 2
,Routing Protocol Overview
• A router is necessary to transmit packets between network segments.
• A router’s primary function is to move a packet from one network to a different
network.
• This section will cover distance vector algorithms, enhanced distance vector
algorithms, link state algorithms, and path vector algorithms.
© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 3
, Routing Protocol Overview
Routing Protocol Overview
• A router’s primary function is to move an IP packet from one network to a different
network.
• A router learns about nonattached networks through configuration of static routes or
through dynamic IP routing protocols.
• Dynamic IP routing protocols distribute network topology information between routers
and provide updates without intervention when a topology change in the network
occurs.
• With dynamic routing protocols, routers try to select the best loop-free path on which to
forward a packet to its destination IP address.
• A network of interconnected routers and related systems managed under a common
network administration is known as an autonomous system (AS), or a routing domain.
© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 4
