IP Library Granted Patent US 8,078,051
Granted Patent B2
US 8,078,051 · App. 11/615,397 · Granted Dec 13, 2011

Method and system for a secure bi-directional line switched ring

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Quick Facts
Patent No.
US 8,078,051
App. No.
11/615,397
Granted
Dec 13, 2011
Kind
B2
Abstract

A method or system including implementing one or more indicators to specify traffic ordering associated with an optical networking protocol and ordering traffic according to the one or more indicators.

Claims (34)

1. A method, comprising:

implementing, on an optical network, one or more indicators to specify traffic ordering associated with an optical networking protocol;

ordering traffic, on an optical network, according to the one or more indicators;

wherein the ordering comprises sending data on a first set of non-contiguous timeslots;

sending data over a second set of non-contiguous timeslots in response to a protection event in a portion of the optical network associated with the first set of non-contiguous timeslots;

sending pseudo random data on the first set of non-contiguous time slots in response to the protection event; and

configuring receiving nodes to ignore the pseudo random data.

2. The method of claim 1 wherein the one or more indicators are implemented in a synchronous optical networking bi-directional line switched ring based network utilizing unused overhead bits.

3. The method of claim 2 wherein the traffic ordering comprises:

configuring a first set of multiplexed time slots to transmit data; and

configuring a second set of multiplexed time slots as reserved time slots.

4. The method of claim 3 wherein the first set of multiplexed time slots comprise one or more synchronous transport signal level 1 channels to transmit data around a synchronous optical networking ring; and

the second set of multiplexed time slots comprise one or more synchronous transport signal level 1 channels that are reserved to transmit data around the synchronous optical networking ring in response to a protection switch.

5. The method of claim 3 wherein the traffic ordering is fixed.

6. The method of claim 3 where the traffic ordering varies.

7. The method of claim 2 further comprising:

implementing one or more encryption indicators to specify encryption associated with payload data; and

encrypting the payload data.

8. The method of claim 7 wherein the encryption varies in response to a protection switch.

9. A system comprising:

a security protocol module that implements one or more security protocols for managing traffic ordering in an optical network;

wherein the one or more security protocols are implemented within an optical networking protocol and the traffic ordering is altered from a contiguous ordering scheme associated with the optical networking protocol to a scheme in which data is transmitted on a first set of non-contiguous timeslots;

the security protocol module being further configured to:

send data over a second set of non-contiguous timeslots in response to a protection event in a portion of the optical network associated with the first set of non-contiguous timeslots;

send pseudo random data on the first set of non-contiguous time slots in response to a protection event; and

configure receiving nodes to ignore the pseudo random data.

10. The system of claim 9 wherein the security module implements the one or more security protocols in a synchronous optical networking bi-directional line switched ring based network utilizing unused overhead bits.

11. The system of claim 9 wherein the traffic ordering configures synchronous transport signal level 1 channels in a first and a second direction around a synchronous optical networking ring based on the one or more security protocols.

12. The system of claim 9 wherein the traffic ordering is fixed.

13. The system of claim 9 wherein the traffic ordering varies.

14. The system of claim 9 wherein the security module encrypts payload data.

15. The system of claim 9 , further comprising:

sending pseudo random data through the portion of the network associated with a protection switch; and

configuring one or more receiving nodes to ignore the pseudo random data.