Network diagnostic system with programmable oscillator

• US 7,516,046 B2
• Filed: 02/01/2006
• Issued: 04/07/2009
• Est. Priority Date: 02/01/2005
• Status: Expired due to Fees

• Current Assignee: Finisar Corporation (II-VI Incorporated)
• Original Assignee: Finisar Corporation (II-VI Incorporated)
• Inventors: Abrahams, Paul, Lawson, A. Michael, Gentieu, Paul R.
• Primary Examiner(s): TSAI, CAROL S W
• Application Number:
  US11/344,829
• Publication Number:
  US 20060246845A1
• Time in Patent Office: 1,161 Days
• Field of Search: 702/122, 702/188, 702/183, 375/316, 375/224, 375/216, 375/217, 455/184.1, 455/196.1, 455/226.1, 455/255, 455/142, 455/67.11, 455/164.1, 455/67.13, 455/258, 455/62, 455/182.2, 455/192.2, 455/192.1, 455/199, 455/127.1, 370/342, 370/350, 370/347, 370/503, 370/252, 370/203, 370/538, 370/210
• US Class Current: 702/183
• CPC Class Codes: H04L 43/50 Testing arrangements

Abstract

A networking system is provided. The networking system may include a diagnostic module. The diagnostic module may perform any of a variety of network diagnostic functions. A diagnostic module may include an oscillator module. The oscillator module may be configured to provide a variety of clock signals to support a variety of network protocols and/or data rates.

Claims

1. A network diagnostic system comprising:

a network diagnostic module configured to perform one or more network diagnostic functions, the network diagnostic module comprising an oscillator module, the oscillator module being programmable among at least two configurations, including a first configuration and a second configuration;

in the first configuration, the oscillator module being configured to generate a first clock signal from a source signal, the first clock signal having a frequency, the frequency of the first clock signal being configured to support a data rate of a first network protocol, the source signal having a frequency, the frequency of the first clock signal being different from the frequency of the source signal;

in the second configuration, the oscillator module being configured to generate a second clock signal from the source signal, the second clock signal having a frequency, the frequency of the second clock signal being configured to support a data rate of a second network protocol, the frequency of the second clock signal being different from the frequency of the source signal, the frequency of the second clock signal being different from the frequency of the first clock signal;

wherein the one or more network diagnostic functions comprise any of the following network diagnostic functions;

a bit-error-rate-tester network diagnostic function comprising;

generating an initial version of a bit sequence;

transmitting the initial version of the bit sequence over at least a portion of network;

receiving a version of the transmitted bit sequence; and

comparing at least a portion of the initial version of the bit sequence with at least a portion of the received version of the bit sequence;

a generator network diagnostic function comprising;

generating a first bit sequence; and

transmitting the first bit sequence over at least a portion of network;

wherein the first bit sequence comprises a plurality of network messages simulating traffic between at least two nodes on the network;

a jammer network diagnostic function comprising;

receiving a second bit sequence comprising at least one network message;

altering at least a portion of the second bit sequence; and

transmitting at least a portion of the altered bit sequence;

a protocol-analyzer network diagnostic function comprising;

receiving a third bit sequence comprising at least one network message;

comparing at least a portion of the third bit sequence with a fourth bit sequence; and

in response to the comparison, executing a capture of a fifth bit sequence comprising at least a portion of a network message; and

a monitor network diagnostic function comprising;

receiving a sixth bit sequence comprising at least one network message;

comparing at least a portion of the sixth bit sequence with an seventh bit sequence; and

in response to the comparison, generating one or more statistics.

2. The network diagnostic system of claim 1, wherein the frequency of the first clock signal is approximately x;

wherein x=((1.5 GHz)*a); and

wherein a is an integer greater than 0.

3. The network diagnostic system of claim 2, wherein the frequency of the second clock signal is approximately y;

wherein y=((1.25 GHz)*b ); and

wherein b is an integer greater than 0.

4. The network diagnostic system of claim 3, wherein the first network protocol is SAS/SATA;

and wherein the second network protocol is Gigabit Ethernet.

5. The network diagnostic system of claim 1, wherein the frequency of the first clock signal is approximately x;

wherein x=((1.0625 GHz)*a); and

wherein a is an integer greater than 0.

6. The network diagnostic system of claim 5, wherein the frequency of the second clock signal is approximately y;

wherein y=((1.5 GHz)*b ); and

wherein b is an integer greater than 0.

7. The network diagnostic system of claim 6, wherein the first network protocol is Fibre Channel;

and wherein the second network protocol is SAS/SATA.

8. The network diagnostic system of claim 1, wherein the frequency of the first clock signal is approximately x;

wherein x=((1.25 GHz)*a); and

wherein a is an integer greater than 0.

9. The network diagnostic system of claim 8, wherein the frequency of the second clock signal is approximately y;

wherein y=((1.0625 GHz)*b ); and

wherein b is an integer greater than 0.

10. The network diagnostic system of claim 9, wherein the first network protocol is Gigabit Ethernet;

and wherein the second network protocol is Fibre Channel.

11. The network diagnostic system of claim 1, further comprising a printed circuit board that includes the network diagnostic module.

12. The network diagnostic system of claim 1, further comprising a chassis computing system that includes at least one blade that includes the network diagnostic module.

13. The network diagnostic system of claim 1, further comprising an appliance that includes the network diagnostic module and a storage device.

14. The network diagnostic system of claim 1, wherein the one or more network diagnostic functions comprise at least the bit error rate tester network diagnostic function.

15. The network diagnostic system of claim 1, wherein the one or more network diagnostic functions comprise at least the generator network diagnostic function.

16. The network diagnostic system of claim 1, wherein the one or more network diagnostic functions comprise at least the jammer network diagnostic function.

17. The network diagnostic system of claim 1, wherein the one or more network diagnostic functions comprise at least the protocol-analyzer network diagnostic function.

18. The network diagnostic system of claim 1, wherein the one or more network diagnostic functions comprise at least the monitor network diagnostic function.

19. The network diagnostic system of claim 1, wherein the one or more network diagnostic functions comprise each of the bit error rate tester network diagnostic function, the generator network diagnostic function, the jammer network diagnostic function, the protocol-analyzer network diagnostic function, and the monitor network diagnostic function.

20. A network diagnostic system comprising:

a network diagnostic module configured to perform one or more network diagnostic functions, the network diagnostic module comprising a frequency chip, the frequency chip being programmable among at least four configurations, including a first configuration, a second configuration, a third configuration and a fourth configuration;

in the first configuration, the frequency chip being configured to generate a first clock signal from a source signal, the first clock signal having a frequency, the frequency of the first clock signal being configured to support a first data rate of a first network protocol, the source signal having a frequency, the frequency of the first clock signal being different from the frequency of the source signal; and

in the second configuration, the frequency chip being configured to generate a second clock signal from the source signal, the second clock signal having a frequency, the frequency of the second clock signal being configured to support a second data rate of the first network protocol, the frequency of the second clock signal being different from the frequency of the source signal;

in the third configuration, the frequency chip being configured to generate a third clock signal from a source signal, the third clock signal having a frequency, the frequency of the third clock signal being configured to support a first data rate of a second network protocol, the frequency of the third clock signal being different from the frequency of the source signal;

in the fourth configuration, the frequency chip being configured to generate a fourth clock signal from the source signal, the fourth clock signal having a frequency, the frequency of the fourth clock signal being configured to support a second data rate of the second network protocol, the frequency of the fourth clock signal being different from the frequency of the source signal;

the frequencies of the first, second, third and fourth clock signals being different from each other;

wherein the one or more network diagnostic functions comprise any of the following network diagnostic functions;

a bit-error-rate-tester network diagnostic function comprising;

generating an initial version of a bit sequence;

transmitting the initial version of the bit sequence over at least a portion of network;

receiving a version of the transmitted bit sequence; and

comparing at least a portion of the initial version of the bit sequence with at least a portion of the received version of the bit sequence;

a generator network diagnostic function comprising;

generating a first bit sequence; and

transmitting the first bit sequence over at least a portion of network;

wherein the first bit sequence comprises a plurality of network messages simulating traffic between at least two nodes on the network;

a jammer network diagnostic function comprising;

receiving a second bit sequence comprising at least one network message;

altering at least a portion of the second bit sequence; and

transmitting at least a portion of the altered bit sequence;

a protocol-analyzer network diagnostic function comprising;

receiving a third bit sequence comprising at least one network message;

comparing at least a portion of the third bit sequence with a fourth bit sequence; and

in response to the comparison, executing a capture of a fifth bit sequence comprising at least a portion of a network message; and

a monitor network diagnostic function comprising;

receiving a sixth bit sequence comprising at least one network message;

comparing at least a portion of the sixth bit sequence with an seventh bit sequence; and

in response to the comparison, generating one or more statistics.

21. The network diagnostic system of claim 20, wherein the frequency of the first clock signal is approximately x;

wherein x=((1.5 GHz)* a);

wherein a is an integer greater than 0;

wherein the frequency of the third clock signal is approximately y;

wherein y=((1.25 GHz)*b); and

wherein b is an integer greater than 0.

22. The network diagnostic system of claim 20, wherein the frequency of the first clock signal is approximately x;

wherein x=((1.0625 GHz)*a);

wherein a is an integer greater than 0;

wherein the frequency of the third clock signal is approximately y;

wherein y=((1.5 GHz)*b); and

wherein b is an integer greater than 0.

23. The network diagnostic system of claim 20, wherein the frequency of the first clock signal is approximately x;

wherein x=((1.25 GHz)*a);

wherein a is an integer greater than 0;

wherein the frequency of the third clock signal is approximately y;

wherein y=((1.0625 GHz)*b); and

wherein b is an integer greater than 0.

24. The network diagnostic system of claim 20, wherein the one or more network diagnostic functions comprise at least the bit error rate tester network diagnostic function.

25. The network diagnostic system of claim 20, wherein the one or more network diagnostic functions comprise at least the generator network diagnostic function.

26. The network diagnostic system of claim 20, wherein the one or more network diagnostic functions comprise at least the jammer network diagnostic function.

27. The network diagnostic system of claim 20, wherein the one or more network diagnostic functions comprise at least the protocol-analyzer network diagnostic function.

28. The network diagnostic system of claim 20, wherein the one or more network diagnostic functions comprise at least the monitor network diagnostic function.

29. The network diagnostic system of claim 20, wherein the one or more network diagnostic functions comprise each of the bit error rate tester network diagnostic function, the generator network diagnostic function, the jammer network diagnostic function, the protocol-analyzer network diagnostic function, and the monitor network diagnostic function.

30. A network diagnostic system comprising:

a network diagnostic module configured to perform one or more network diagnostic functions, the network diagnostic module comprising a frequency chip, the frequency chip being programmable among at least two configurations, including a first configuration and a second configuration;

in the first configuration, the frequency chip being configured to generate a first clock signal from a source signal, the first clock signal having a frequency, the frequency of the first clock signal being configured to support a data rate of a first network protocol, the source signal having a frequency, the frequency of the first clock signal being different from the frequency of the source signal;

in the second configuration, the frequency chip being configured to generate a second clock signal from the source signal, the second clock signal having a frequency, the frequency of the second clock signal being configured to support a data rate of a second network protocol, the frequency of the second clock signal being different from the frequency of the source signal, the frequency of the second clock signal being different from the frequency of the first clock signal;

wherein the one or more network diagnostic functions comprise any of the following network diagnostic functions;

a bit-error-rate-tester network diagnostic function comprising;

generating an initial version of a bit sequence;

transmitting the initial version of the bit sequence over at least a portion of network;

receiving a version of the transmitted bit sequence; and

comparing at least a portion of the initial version of the bit sequence with at least a portion of the received version of the bit sequence;

a generator network diagnostic function comprising;

generating a first bit sequence; and

transmitting the first bit sequence over at least a portion of network;

wherein the first bit sequence comprises a plurality of network messages simulating traffic between at least two nodes on the network;

a jammer network diagnostic function comprising;

receiving a second bit sequence comprising at least one network message;

altering at least a portion of the second bit sequence; and

transmitting at least a portion of the altered bit sequence;

a protocol-analyzer network diagnostic function comprising;

receiving a third bit sequence comprising at least one network message;

comparing at least a portion of the third bit sequence with a fourth bit sequence; and

in response to the comparison, executing a capture of a fifth bit sequence comprising at least a portion of a network message; and

a monitor network diagnostic function comprising;

receiving a sixth bit sequence comprising at least one network message;

comparing at least a portion of the sixth bit sequence with an seventh bit sequence; and

in response to the comparison, generating one or more statistics.

31. The network diagnostic system of claim 30, wherein the one or more network diagnostic functions comprise at least the bit error rate tester network diagnostic function.

32. The network diagnostic system of claim 30, wherein the one or more network diagnostic functions comprise at least the generator network diagnostic function.

33. The network diagnostic system of claim 30, wherein the one or more network diagnostic functions comprise at least the jammer network diagnostic function.

34. The network diagnostic system of claim 30, wherein the one or more network diagnostic functions comprise at least the protocol-analyzer network diagnostic function.

35. The network diagnostic system of claim 30, wherein the one or more network diagnostic functions comprise at least the monitor network diagnostic function.

36. The network diagnostic system of claim 30, wherein the one or more network diagnostic functions comprise each of the bit error rate tester network diagnostic function, the generator network diagnostic function, the jammer network diagnostic function, the protocol-analyzer network diagnostic function, and the monitor network diagnostic function.

37. A network diagnostic system comprising:

a network diagnostic module configured to perform one or more network diagnostic functions, the network diagnostic module comprising an oscillator module, the oscillator module being programmable among at least four configurations, including a first configuration, a second configuration, a third configuration and a fourth configuration;

in the first configuration, the oscillator module being configured to generate a first clock signal from a source signal, the first clock signal having a frequency, the frequency of the first clock signal being configured to support a first data rate of a first network protocol, the source signal having a frequency, the frequency of the first clock signal being different from the frequency of the source signal; and

in the second configuration, the oscillator module being configured to generate a second clock signal from the source signal, the second clock signal having a frequency, the frequency of the second clock signal being configured to support a second data rate of the first network protocol, the frequency of the second clock signal being different from the frequency of the source signal;

in the third configuration, the oscillator module being configured to generate a third clock signal from a source signal, the third clock signal having a frequency, the frequency of the third clock signal being configured to support a first data rate of a second network protocol, the frequency of the third clock signal being different from the frequency of the source signal;

in the fourth configuration, the oscillator module being configured to generate a fourth clock signal from the source signal, the fourth clock signal having a frequency, the frequency of the fourth clock signal being configured to support a second data rate of the second network protocol, the frequency of the fourth clock signal being different from the frequency of the source signal;

the frequencies of the first, second, third and fourth clock signals being different from each other;

wherein the one or more network diagnostic functions comprise any of the following network diagnostic functions;

a bit-error-rate-tester network diagnostic function comprising;

generating an initial version of a bit sequence;

transmitting the initial version of the bit sequence over at least a portion of network;

receiving a version of the transmitted bit sequence; and

comparing at least a portion of the initial version of the bit sequence with at least a portion of the received version of the bit sequence;

a generator network diagnostic function comprising;

generating a first bit sequence; and

transmitting the first bit sequence over at least a portion of network;

wherein the first bit sequence comprises a plurality of network messages simulating traffic between at least two nodes on the network;

a jammer network diagnostic function comprising;

receiving a second bit sequence comprising at least one network message;

altering at least a portion of the second bit sequence; and

transmitting at least a portion of the altered bit sequence;

a protocol-analyzer network diagnostic function comprising;

receiving a third bit sequence comprising at least one network message;

comparing at least a portion of the third bit sequence with a fourth bit sequence; and

in response to the comparison, executing a capture of a fifth bit sequence comprising at least a portion of a network message; and

a monitor network diagnostic function comprising;

receiving a sixth bit sequence comprising at least one network message;

comparing at least a portion of the sixth bit sequence with an seventh bit sequence; and

in response to the comparison, generating one or more statistics.