System and method for conducting diagnostics in a telecommunications node
View Patent ↗A system and method for conducting diagnostic tests on a network card disposed in a telecommunications node. A diagnostic application automaton is launched at predetermined intervals by a base level diagnostics automata under the control of an executive scheduler running on the network card, wherein the network card is initially in a provisioned configuration mode operable to transmit and receive communication traffic therethrough. Upon determining by the base level diagnostics automata to install the diagnostic application, the network card is reconfigured into a loopback configuration mode involving a predefined loopback path in the telecommunications node. Operations relating to the telecommunications traffic are suspended in the loopback mode, whereby one or more diagnostic tests may be performed by the installed diagnostic application by injecting appropriate test patterns at specific locations in the path. Upon completing the diagnostic tests, the network card is reconfigured into the provisioned configuration mode in order to commence the communication traffic.
1. A method for conducting diagnostic tests in a telecommunications node including an optics assembly coupled to a plurality of formatter cards, wherein a plurality of channel bank assemblies are coupled via a time slot interchanger (TSI) to said formatter cards, said method comprising the steps:
launching a diagnostics automaton at a predetermined time by an executive scheduler running on a standby formatter card, wherein said standby formatter card is in a provisioned configuration mode operable to transport communication traffic therethrough;
upon determining by said diagnostics automaton to install a diagnostic application, reconfiguring said standby formatter card into a loopback configuration mode involving a predefined loopback path in said telecommunications node and suspending said communication traffic through said standby formatter card, wherein said predefined loopback path involves a transmit path and a receive path in said standby formatter card and a cross-connect path in said optics assembly, said predefined loopback path traversing a backplane to which said standby formatter card is coupled;
performing at least one diagnostic test relating to said predefined loopback path; and
upon completing said at least one diagnostic test, reconfiguring said standby formatter card into said provisioned configuration mode in order to commence said communication traffic through said standby formatter card.
2. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 1 , wherein said communication traffic is commenced through said network card upon reconfiguration after a predetermined delay.
3. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 2 , wherein said predetermined delay is about 20 to 50 milliseconds.
4. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 1 , wherein said diagnostic application is installed once every second.
5. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 1 , wherein said step of performing at least one diagnostic test involves the step of injecting a predetermined pattern of test traffic at a particular point disposed on said predefined loopback path.
6. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 1 , further comprising the step of reporting an alarm to a terminal control processor disposed in said telecommunications node when a failure is detected with respect to said at least one diagnostic test.
7. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 1 , wherein said predefined loopback path is effectuated by cross-connecting a transmit path and a receive path in a cross-connect module disposed on said standby formatter card.
8. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 1 , wherein said standby formatter card comprises a Synchronous Optical Network (SONET) formatter.
9. A computer-accessible medium operable with a telecommunications node disposed in an access network, said computer-accessible medium carrying a sequence of instructions which, when executed by at least one processing entity associated with said telecommunications node, cause the following steps to be performed:
launching a diagnostics automaton at a predetermined time by an executive scheduler running on a network card disposed in said telecommunications node, wherein said network card is in a provisioned configuration mode operable to transport communication traffic therethrough;
upon determining by said diagnostics automaton to install a diagnostic application, reconfiguring said network card into a loopback configuration mode involving a predefined loopback path therein and suspending said communication traffic through said network card;
performing at least one diagnostic test relating to said predefined loopback path; and
upon completing said at least one diagnostic test, reconfiguring said network card into said provisioned configuration mode in order to commence said communication traffic through said network card, wherein said diagnostic application is installed once every second.
10. The computer-accessible medium operable with a telecommunications node disposed in an access network as set forth in claim 9 , wherein said communication traffic is commenced through said network card upon reconfiguration after a predetermined delay.
11. The computer-accessible medium operable with a telecommunications node disposed in an access network as set forth in claim 10 , wherein said predetermined delay is about 20 to 50 milliseconds.
12. The computer-accessible medium operable with a telecommunications node disposed in an access network as set forth in claim 9 , wherein said step of performing at least one diagnostic test involves the step of injecting a predetermined pattern of test traffic at a particular point disposed on said predefined loopback path.
13. The computer-accessible medium operable with a telecommunications node disposed in an access network as set forth in claim 9 , further comprising instructions to perform the step of reporting an alarm when a failure is detected with respect to said at least one diagnostic test.
14. The computer-accessible medium operable with a telecommunications node disposed in an access network as set forth in claim 9 , wherein said predefined loopback path is effectuated by cross-connecting a transmit path and a receive path in a cross-connect module disposed on said network card.
15. A method for conducting diagnostic tests in a telecommunications node including an optics assembly coupled to a plurality of formatter cards, wherein a plurality of channel bank assemblies are coupled via a time slot interchanger (TSI) to said formatter cards, said method comprising the steps:
launching a diagnostics automaton at a predetermined time by an executive scheduler running on a standby formatter card, wherein said standby formatter card is in a provisioned configuration mode operable to transport communication traffic therethrough;
upon determining by said diagnostics automaton to install a diagnostic application, reconfiguring said standby formatter card into a loopback configuration mode involving a predefined loopback path in said telecommunications node and suspending said communication traffic through said standby formatter card, wherein said, predefined loopback path involves a first loopback path portion involving a transmit path and a receive path in said standby formatter card and a second loopback path portion involving said optics assembly, each of said first and second loopback path portions being effectuated via a decoupled cross-connect path in a cross-connect module disposed on said standby formatter card;
performing at least one diagnostic test relating to said predefined loopback path; and
upon completing said at least one diagnostic test, reconfiguring said standby formatter card into said provisioned configuration mode in order to commence said communication traffic through said standby formatter card.
16. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 15 , wherein said communication traffic is commenced through said network card upon reconfiguration after a predetermined delay.
17. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 16 , wherein said predetermined delay is about 20 to 50 milliseconds.
18. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 15 , wherein said diagnostic application is installed once every second.
19. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 15 , wherein said step of performing at least one diagnostic test involves the step of injecting a predetermined pattern of test traffic at a particular point disposed on said predefined loopback path.
20. The method for conducting diagnostic tests in a telecommunications node as set forth in claim 15 , further comprising the step of reporting an alarm to a terminal control processor disposed in said telecommunications node when a failure is detected with respect to said at least one diagnostic test.