Centralized internet protocol/multi-protocol label switching connectivity verification in a communications network management context

• US 7,487,240 B2
• Filed: 04/08/2004
• Issued: 02/03/2009
• Est. Priority Date: 04/15/2003
• Status: Active Grant

• Current Assignee: WSOU Investments, LLC (WSOU Holdings, LLC)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Proulx, Denis Armad, Zabihi, Afshan, Katz, Felix, Virdy, Macmohana Singh, Timmerman, Craig Ellirt, Rachinowski, Margaret
• Primary Examiner(s): Tran, Philip B
• Application Number:
  US10/820,111
• Publication Number:
  US 20050022189A1
• Time in Patent Office: 1,762 Days
• Field of Search: 709/220, 709/223, 709/224
• US Class Current: 709/224
• CPC Class Codes: H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks

Abstract

A framework for connectivity verification is provided. The framework includes a connectivity verification server performing unattended connectivity verification, and a connectivity verification application, both the connectivity verification server and connectivity verification application operating in a network management context. Connectivity verification jobs are defined via the connectivity verification application and the connectivity verification server is configured accordingly. Connectivity verification jobs can also be scheduled. The connectivity verification application also provides a display of connectivity verification results. The results of each connectivity verification job may be compared against a desired connectivity profile and deviations from the connectivity profile being used to raise alarms. Connectivity verification results, including alarm information, are further used to highlight displayed managed communications network entities on a network map displaying selected connectivity verification results. The advantages are derived from using the connectivity verification framework to automate connectivity verification testing at reduced operational costs.

Claims

1. A network management connectivity verification framework comprising:

a connectivity verification server to perform unattended connectivity verification jobs; and

a connectivity verification application to;

define connectivity verification jobs capable of verifying connectivity in the network relating to at least Layer-2 and Layer-3 objects within a given containment hierarchy for the network,

control the connectivity verification server to perform the defined connectivity verification jobs, wherein the performing generates at least one of connectivity verification results,

display the connectivity verification results,

receive a user-input specification of a connectivity verification threshold,

compare the connectivity verification results to the specified connectivity verification threshold,

generate an alarm when the comparison shows that at least one of the connectivity verification results has reached the specified connectivity verification threshold,

identify Layer-2 and Layer-3 objects within the containment hierarchy affected by the connectivity verification results associated with the alarm, and

display the identified Layer-2 and Layer-3 objects.

2. The connectivity verification framework of claim 1,

wherein the connectivity verification jobs are scheduled and the connectivity verification server performs scheduled connectivity verification.

3. The connectivity verification framework of claim 1, wherein the connectivity verification application further provides a display of the connectivity verification results.

4. The connectivity verification framework of claim 3,

wherein the connectivity verification results, including alarm information, are further used to generate a network map displaying selected connectivity verification results.

5. The connectivity verification framework of claim 1, wherein the results of each connectivity verification job are compared against a connectivity profile, a deviation from the connectivity profile being used to raise the alarm.

6. A method implemented at least in part by a connectivity verification server for creating a network connectivity verification test, comprising the following steps:

defining a connectivity verification job capable of verifying connectivity in the network relating to at least Layer-2 and Layer-3 objects within a given containment hierarchy for the network;

controlling the connectivity verification server to perform the connectivity verification job wherein the performing generates at least one of connectivity verification results;

displaying the connectivity verification results;

receiving a user-input specification of a connectivity verification threshold;

comparing the connectivity verification results to the specified connectivity verification threshold;

generating an alarm when the comparison shows that at least one of the connectivity verification results has reached the specified connectivity verification threshold;

identifying Layer-2 and Layer-3 objects within the containment hierarchy affected by the connectivity verification results associated with the alarm; and

displaying the identified Layer-2 and Layer-3 objects.

7. The method of creating the network connectivity verification test of claim 6, wherein defining the connectivity verification job further comprises the following steps:

selecting via an NMS user interface, a pair of source and destination IP objects between which connectivity is to be verified; and

specifying a connectivity verification schedule.

8. The method of creating the network connectivity verification test of claim 7,

wherein the step of selecting IP objects selects IP objects from a group comprising at least one of a router, an IP interface, and an IP address.

9. The method of creating the network connectivity verification test of claim 7,

wherein the step of selecting IP objects selects pairs of IP objects from a group comprising at least one of an Internet Protocol (IP) link, a Label Switched Path (LSP), and a Virtual Private Network (VPN).

10. The method of creating the network connectivity verification test of claim 6, wherein the step of receiving a user-input specification further comprises the step of specifying a threshold for at least one of round trip delay, jitter, and packet loss.

11. The method of creating the network connectivity verification test of claim 6,

wherein the step of defining the connectivity verification job further comprises the following step:

configuring a connectivity verification parameter from a group comprising at least one of a number of ping commands to issue, a ping packet size, a ping data fill pattern, a time to wait for response, and a type of service.

12. The method of creating the network connectivity verification test of claim 6,

wherein the step of defining the connectivity verification job further comprises the following step:

configuring a connectivity verification parameter from a group comprising at least one of a number of traceroute commands to issue, a traceroute packet size, a traceroute packet data fill pattern, a time to wait for response, and a type of service.

13. A method implemented at least in part by a connectivity verification server for performing a network connectivity verification test in a network management context comprising the following steps:

scheduling a connectivity verification process, the process capable of verifying connectivity in the network relating to at least Layer-2 and Layer-3 objects within a given containment hierarchy for the network;

receiving a user-input specification of a connectivity verification threshold;

performing the scheduled connectivity verification process to generate a connectivity verification result;

comparing the connectivity verification result with the user-specified connectivity verification threshold;

generating an alarm when the comparison shows that the connectivity verification result has reached the specified connectivity verification threshold;

identifying Layer-2 and Layer-3 objects within the containment hierarchy affected by the connectivity verification result associated with the alarm; and

displaying the identified Layer-2 and Layer-3 objects.

14. The method of performing the network connectivity verification test of claim 13, further comprising the following step:

storing a connectivity verification job on a computer readable medium for subsequent access and execution.

15. The method of performing the network connectivity verification test of claim 14, further comprising the following step:

displaying at least one IP object based on one of the connectivity verification job and the connectivity verification result.

16. The method of performing the network connectivity verification test of claim 15,

wherein the displayed object is one of an OSI Layer 2 and an OSI Layer 3 object.

17. The method of performing the network connectivity verification test of claim 13,

wherein the step of performing scheduled connectivity verification further comprises the following step:

periodically executing connectivity verification tests.

18. The method of performing the network connectivity verification test of claim 13,

wherein the step of performing scheduled connectivity verification further comprises the following step:

issuing at least one of a ping command and a traceroute command.

19. The method of performing the network connectivity verification test of claim 13, further comprising the following step:

storing historical connectivity verification results on a computer readable medium for subsequent access.