Event triggered traceroute for optimized routing in a computer network

A routing and event technology, applied in the field of computer networks, can solve the problems of not working, not knowing the specific target address of tracking routing work, and network events are no longer in the midst of occurrence

Active Publication Date: 2009-08-12
CISCO TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, again, a problem with manually applying traceroute diagnostics is that the network event may no longer be in progress (eg, may have been corrected)
[0004] Additionally, another problem associated with tracerouting is determining the appropriate tracetarget to direct the tracerou

Method used

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  • Event triggered traceroute for optimized routing in a computer network
  • Event triggered traceroute for optimized routing in a computer network
  • Event triggered traceroute for optimized routing in a computer network

Examples

Experimental program
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Embodiment Construction

[0013] overview

[0014] According to some embodiments of the present disclosure, a network device (eg, a master controller) may detect events in a computer network on a current path of a destination address prefix from a local network domain to a remote domain. In response, the device may dynamically (e.g., intelligently) determine the trace target destination address within the destination address prefix, and may perform (or request to perform) an alternative to the current path and network from the local network domain to the trace target. A traceroute for a selection of alternate paths, where the traceroute is used to obtain per-hop metrics along each traced path. These metrics may then be stored, eg, for optimal path selection, fault identification reporting, and the like.

[0015] describe

[0016] A computer network is a geographically distributed collection of nodes interconnected by communication links and segments used to communicate data between end nodes (eg, per...

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PUM

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Abstract

In one embodiment, a network device (e.g., a master controller) may detect an event on a current path in a computer network from a local network domain to a destination address prefix of a remote domain. In response, the device may dynamically (e.g., intelligently) determine a trace target destination address within the destination address prefix, and may perform (or request performance of) a Traceroute of the current path and a selection of alternate paths in the network from the local network domain to the trace target, where the Traceroute is adapted to obtain per-hop measurements along the respective traced path. The measurements may then be stored, for example, to be used for optimal path selection, fault identification reporting, etc.

Description

technical field [0001] The present invention relates generally to computer networks, and more particularly to traceroute operations for optimized routing in computer networks. Background technique [0002] Currently, when a network event (e.g., a performance problem) occurs in a computer network, it is often desirable to determine the cause of the problem, e.g., why traffic no longer reaches its destination in the network, or why the delay in reaching the destination becomes unacceptable . However, every now and then, by the time the system administrator is notified to check for the problem, the network may have corrected itself, thus hiding the problem from detection. In particular, administrators often have to go to specific edge routers in the local domain and manually run diagnostics on destinations that are experiencing performance issues. [0003] Traceroute (for example, traditional traceroute for Internet Protocol or "IP") is a feature available to administrators t...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/56H04L45/748
CPCH04L41/0677H04L41/0668H04L43/10H04L41/0686H04L43/0858H04L47/125
Inventor 普瑞塔姆·沙赫达纳·布莱尔拉胡尔·G·帕特尔
Owner CISCO TECH INC
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