Cisco Systems OL-31454-01 manual Specifying a Default Route or Gateway of Last Resort, IP Routing

Models: OL-31454-01

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Chapter 4 Configuring the Router

Performing the Initial Configuration on the Router

Examples

Configuring the GigabitEthernet Interface: Example

!

interface GigabitEthernet0/0 description GE int to HR group

ip address 172.16.3.3 255.255.255.0 duplex auto

speed auto no shutdown

!

Sample Output for the show ip interface brief Command

Router# show ip interface brief

Interface

IP-Address

OK? Method Status

Protocol

GigabitEthernet0/0

172.16.3.3

YES

NVRAM

up

up

GigabitEthernet0/1

unassigned

YES

NVRAM

administratively down down

Router#

 

 

 

 

 

Specifying a Default Route or Gateway of Last Resort

This section describes how to specify a default route with IP routing enabled. For alternative methods of specifying a default route, see Configuring a Gateway of Last Resort Using IP Commands.

The Cisco IOS software uses the gateway (router) of last resort if it does not have a better route for a packet and if the destination is not a connected network. This section describes how to select a network as a default route (a candidate route for computing the gateway of last resort). The way in which routing protocols propagate the default route information varies for each protocol.

Configuring IP Routing and IP Protocols

For comprehensive configuration information about IP routing and IP routing protocols, see Cisco IOS IP Routing Protocols Configuration Guide, Release 12.4T on www.cisco.com.

IP Routing

You can configure integrated routing and bridging (IRB) so the router can route and bridge simultaneously. The router acts as an IP host on the network whether routing is enabled or not.

To read more about IRB, see the following URL:

http://www.cisco.com/en/US/tech/tk389/tk815/tk855/tsd_technology_support_sub-protocol_home.htm l

IP routing is automatically enabled in the Cisco IOS software. When IP routing is configured, the system uses a configured or learned route to forward packets, including a configured default route.

Note This task section does not apply when IP routing is disabled. To specify a default route when IP routing is disabled, see Configuring a Gateway of Last Resort Using IP Commands on www.cisco.com.

 

Cisco 2010 Connected Grid Router Hardware Installation Guide

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OL-31454-01

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Cisco Systems OL-31454-01 Specifying a Default Route or Gateway of Last Resort, Configuring IP Routing and IP Protocols

OL-31454-01 specifications

Cisco Systems OL-31454-01 refers to a specific configuration guide for Cisco networking equipment, which serves an essential role in helping IT professionals understand how to deploy and manage their networking hardware efficiently. This document is particularly relevant for those working with Cisco routers and switches, highlighting various features, technologies, and best practices in network management.

A core feature of Cisco Systems OL-31454-01 is its focus on enhancing network performance and reliability. The systems typically include advanced Quality of Service (QoS) mechanisms, ensuring that critical applications receive the necessary bandwidth and performance even during peak usage times. This is crucial for enterprises that rely on uninterrupted access to applications and services.

The guide also discusses technologies such as VLANs (Virtual Local Area Networks), which allow network administrators to segment networks for improved performance and security. By isolating traffic within different VLANs, organizations can mitigate congestion and enhance overall network efficiency.

Another critical aspect of OL-31454-01 is its in-depth look at security features. Cisco networking solutions typically come equipped with integrated security protocols, such as IPsec for Virtual Private Networks (VPNs) and advanced threat detection mechanisms. This layered approach to security helps protect sensitive data from unauthorized access and cyber threats.

Furthermore, the guide emphasizes the importance of automation and programmability in modern networks. Utilizing Cisco's software-defined networking (SDN) capabilities, network engineers can automate various tasks, reducing the potential for human error and freeing up valuable resources. The integration of tools like Cisco DNA Center provides a unified network management platform, enhancing visibility and control across the entire network.

In addition to these features, Cisco Systems OL-31454-01 outlines various compatibility options with existing technologies and infrastructure. The guide ensures that IT teams can seamlessly integrate new hardware into their current networks without significant overhauls, facilitating a more efficient transition.

Overall, OL-31454-01 serves as a comprehensive resource for deploying and managing Cisco systems, offering valuable insights into essential features, technologies, and best practices that can significantly enhance an organization's networking capabilities.