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One of the IP routing protocols supported by BFD must be configured on the routers before BFD is deployed.

PXF is enabled by default and is generally not turned off.

You must enable Cisco Parallel eXpress Forwarding (PXF) on the Cisco 10720 Internet router in order for BFD to operate properly.

Cisco Express Forwarding (CEF) and IP routing must be enabled on all participating routers.

Feature Information for Bidirectional Forwarding Detection.

Configuration Examples for Bidirectional Forwarding Detection.

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How to Configure Bidirectional Forwarding Detection.Information About Bidirectional Forwarding Detection.Restrictions for Bidirectional Forwarding Detection.Prerequisites for Bidirectional Forwarding Detection.To access Cisco Feature Navigator, go to.

IDLE TIMER MULTIPLIR SOFTWARE

Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS software image support. To reach links to specific feature documentation in this module and to see a list of the releases in which each feature is supported, use the "Feature Information for Bidirectional Forwarding Detection" section.įinding Support Information for Platforms and Cisco IOS Software Images Your Cisco IOS software release may not support all of the features documented in this module. Because the network administrator can use BFD to detect forwarding path failures at a uniform rate, rather than the variable rates for different routing protocol hello mechanisms, network profiling and planning will be easier, and reconvergence time will be consistent and predictable.įinding Feature Information in This Module In addition to fast forwarding path failure detection, BFD provides a consistent failure detection method for network administrators. BFD is a detection protocol designed to provide fast forwarding path failure detection times for all media types, encapsulations, topologies, and routing protocols.

This document describes how to enable the Bidirectional Forwarding Detection (BFD) protocol. Monitoring and Troubleshooting BFD for Cisco 10720 Internet RoutersĬonfiguration Examples for Bidirectional Forwarding DetectionĬonfiguring BFD in an EIGRP Network with Echo Mode Enabled by Default: ExampleĬonfiguring BFD in an OSPF Network: ExampleĬonfiguring BFD in a BGP Network: ExampleĬonfiguring BFD in an IS-IS Network: ExampleĬonfiguring BFD in an HSRP Network: Exampleįeature Information for Bidirectional Forwarding Detection

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Monitoring and Troubleshooting BFD for Cisco 12000 Series Routers Monitoring and Troubleshooting BFD for Cisco 7600 Series Routers How to Configure Bidirectional Forwarding DetectionĬonfiguring BFD Session Parameters on the InterfaceĬonfiguring BFD Support for Routing Protocolsĭisabling BFD Echo Mode Without Asymmetry Information About Bidirectional Forwarding Detectionīenefits of Using BFD for Failure Detection Restrictions for Bidirectional Forwarding Detection

Add the days including any carried over from calculating hoursĪdd 2 days 21 hours 45 minutes 39 seconds to 5 days 10 hours 45 minutes 22 secondsĭivide days, hours, minutes and seconds by a divisor, working from smallest unit of time to largest.Prerequisites for Bidirectional Forwarding Detection.

If total hours is greater than 24, subtract 24 from hours and carry 1 to days.

Add the hours including any carried over from calculating minutes.

If total minutes is greater than 59, subtract 60 from minutes and carry 1 to hours.

Add the minutes including any carried over from calculating seconds.

If total seconds is greater than 59, subtract 60 from seconds and carry 1 to minutes.

How to Add TimeĪdd days, hours, minutes and seconds working from smallest unit of time to largest. See examples of adding, subtracting, multiplying and dividing segments of time. How to do math operations with time is explained below. Answers include equivalent time in total days, hours, minutes or seconds.

The calculator can add and subtract time segments or multiply and divide time by a number or decimal. Time calculator to add, subtract, multiply and divide time in days, hours, minutes and seconds.