ODU PATH PROTECTION IN A DISAGGREGATED OTN SWITCHING SYSTEM
First Claim
1. An optical transport network (OTN) comprising:
- a first OTN switch connected to a working optical data unit (ODU) path and a protection ODU path from a second OTN switch, the first OTN switch comprising;
a first ingress plug-in universal (PIU) module receiving ODUs from the second OTN switch via the working ODU path and transmitting Ethernet packets to an Ethernet fabric included in the first OTN switch;
a second ingress PIU module receiving the ODUs from the second OTN switch via the protection ODU path, the second ingress PIU module connected to the Ethernet fabric; and
a first egress PIU module receiving the Ethernet packets from the Ethernet fabric;
the first OTN switch, in response to determining that a protection switch using the protection ODU path is to be performed on the working ODU path, enabled to perform the protection switch to;
receive the Ethernet packets via the Ethernet fabric from the second ingress PIU module from the protection ODU path.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for optical data unit (ODU) path protection in a disaggregated optical transport network (OTN) switching system that include using plug-in universal (PIU) modules each having multiple ports for OTN to Ethernet transceiving and an Ethernet fabric as a switching core are disclosed. An OTN over Ethernet module in each of the PIU modules may enable various OTN functionality to be realized using the Ethernet fabric which may include multiple Ethernet switches. An egress PIU module may receive Ethernet packets via the Ethernet fabric from a working ODU path. In response to determining that a protection switch using a protection ODU path may be performed on the working ODU path, the egress PIU module may receive the Ethernet packets via the Ethernet fabric from the protection ODU path.
-
Citations
16 Claims
-
1. An optical transport network (OTN) comprising:
-
a first OTN switch connected to a working optical data unit (ODU) path and a protection ODU path from a second OTN switch, the first OTN switch comprising; a first ingress plug-in universal (PIU) module receiving ODUs from the second OTN switch via the working ODU path and transmitting Ethernet packets to an Ethernet fabric included in the first OTN switch; a second ingress PIU module receiving the ODUs from the second OTN switch via the protection ODU path, the second ingress PIU module connected to the Ethernet fabric; and a first egress PIU module receiving the Ethernet packets from the Ethernet fabric; the first OTN switch, in response to determining that a protection switch using the protection ODU path is to be performed on the working ODU path, enabled to perform the protection switch to; receive the Ethernet packets via the Ethernet fabric from the second ingress PIU module from the protection ODU path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for optical data unit (ODU) path protection, the method comprising:
-
in a first optical transport network (OTN) switch connected to a working optical data unit (ODU) path and a protection ODU path from a second OTN switch, receiving, by a first ingress plug-in universal (PIU) module, ODUs from the second OTN switch via the working ODU path and transmitting Ethernet packets to an Ethernet fabric included in the first OTN switch; receiving, by a second ingress PIU module, the ODUs from the second OTN switch via the protection ODU path, the second ingress PIU module connected to the Ethernet fabric; receiving, by a first egress PIU module, the Ethernet packets from the Ethernet fabric; and in response to determining that a protection switch using the protection ODU path is to be performed on the working ODU path, performing, for the first OTN switch, the protection switch, including; receiving the Ethernet packets via the Ethernet fabric from the second ingress PIU module from the protection ODU path. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification