Optical multiplex level and optical channel layer server trails in wavelength switched optical networks

Patent metadata

Field	Value
Publication number	US-9520960-B2
Application number	US-201414164435-A
Country	US
Kind code	B2
Filing date	Jan 27, 2014
Priority date	Jan 27, 2014
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

An optical network packet configured to transmit over an optical communication link from a first optical network having a first control plane to a second optical network having a second control plane is generated. Generating the optical network packet comprises generating the packet configured to be transmitted from the first optical network to the second optical network in the optical domain.

First claim

What is claimed is:

1. A method comprising:
generating an optical network packet configured to transmit over an optical communication link from a first optical network having a first control plane to a second optical network having a second control plane;
wherein generating the network packet further comprises generating the packet configured to be transmitted from the first optical network to the second optical network in an optical multiplex section of an optical transport network domain without undergoing demultiplexing at an edge of the first optical network.

2. The method of claim 1 , wherein generating the optical network packet comprises generating the optical network packet configured to be transmitted over the optical communication link without re-amplification, reshaping or retiming of the optical network packet.

3. The method of claim 2 , wherein generating the optical network packet comprises generating the optical network packet configured to be transmitted in an optical channel layer of the optical network domain.

4. The method of claim 2 , wherein the optical communication link is an optical channel layer transmission link.

5. The method of claim 1 wherein generating the optical network packet comprises generating the optical network packet to be transmitted over the optical communication link without undergoing optical-to-electrical conversion.

6. The method of claim 1 , wherein transmitting the optical network packet comprises transmitting the optical network packet from a trail termination unit.

7. The method of claim 1 , wherein the generating the optical network packet comprises generating a packet configured to be transmitted from a first trail termination unit to a second trail termination unit.

8. The method of claim 1 , wherein generating the optical network packet comprises generating the optical network packet to be transmitted by a reconfigurable optical add-drop multiplexer.

9. The method of claim 1 , wherein generating the optical network packet comprises generating a Generalized Multi-Protocol Label Switching packet.

10. A method comprising:
establishing an optical transmission link between a first optical network having a first control plane and a second optical network having a second control plane;
configuring the optical transmission link to transmit optical packets from the first optical network to the second optical network in an optical multiplex section transmission link of an optical domain;
receiving an optical network packet in the optical domain from the first optical network; and
transmitting the optical network packet to the second optical network in the optical domain without demultiplexing the optical packet.

11. The method of claim 10 , wherein:
receiving the optical network packet comprises receiving the optical network packet at a trail termination unit; and
transmitting the optical network packet comprises transmitting the optical network packet from the trail termination unit.

12. The method of claim 10 , wherein configuring the optical transmission link comprises configuring the optical transmission link as an optical channel layer transmission link.

13. The method of claim 12 , wherein transmitting the optical network packet comprises transmitting the optical network packet without performing optical-to-electrical conversion of the optical network packet.

14. The method of claim 10 , wherein transmitting the optical network packet comprises transmitting the optical network packet without re-amplification, reshaping or retiming (“3R Regeneration”) of the optical network packet.

15. The method of claim 10 , wherein transmitting the optical network packet comprises transmitting optical network packet via a reconfigurable optical add-drop multiplexer.

16. An apparatus comprising:
at least one input optical port;
at least one output optical port; and
a processor, wherein the processor is configured to:
establish an optical transmission link between a first optical network having a first control plane and a second optical network having a second control plane;
configure the optical transmission link to transmit optical packets from the first optical network to the second optical network in an optical multiplex section transmission link of an optical domain;
cause an optical network packet in the optical domain to be received from the first optical network through the at least one input optical port; and
cause the optical network packet to be transmitted to the second optical network in the optical domain through the output optical port without demultiplexing the optical network packet.

17. The apparatus of claim 16 , further comprising a reconfigurable optical add-drop multiplexer.

18. The apparatus of claim 16 , wherein the processor is further configured to transmit the optical network packet without re-amplificiation, reshaping or retiming (“3R Regeneration”) of the optical network packet.

19. The apparatus of claim 16 , wherein the processor is further configured to transmit the optical network packet without performing optical-to-electrical conversion of the optical network packet.

20. The apparatus of claim 16 , wherein the processor is configured to configure the optical transmission link to transmit optical packets from the first optical network to the second optical network in the optical domain by configuring the optical transmission link as an optical channel layer transmission link.

21. The apparatus of claim 16 , wherein the apparatus is a trail termination unit.

Assignees

• Cisco Tech Inc

Inventors

• Bianchi David

Classifications

• H04J14/0261

  at the optical multiplex section layer · CPC title

• H04J14/0212 Primary

  using optical switches or wavelength selective switches [WSS] · CPC title

• H04J14/0279

  WDM point-to-point architectures · CPC title

• H04J14/0256

  at the optical channel layer · CPC title

• H04B10/27

  Arrangements for networking · CPC title