Cisco NCS 1010 and NCS 1020 Datapath Configuration Guide, IOS XR Releases 26.x.x

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OLT controller models and their port mappings

Updated: June 19, 2026

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This section lists all the OLT controller models available for the Cisco NCS 1010 and NCS 1020 platform. It details the mapping between physical ports and controllers for each OLT and E-OLT cards.

The OLT and E-OLT cards are available for the NCS 1010 and NCS 1020 platforms. Use this information to identify controller-port assignments for supported optical line terminal (OLT) line cards, including release-specific models and supported features.

OLT controller models

The OLT controller model is available for the NCS 1010 OLT line cards:

Note

For release information of the OLT line cards, refer to Hardware Installation Guide for Cisco NCS 1010 and Cisco NCS 1000 Passive Modules.

Port and controller mapping for each OLT line card

The figures and tables show the two OLT variants and the mapping between physical ports and controllers:

Figure 1. NCS1K-OLT-C
NCS1K-OLT-C Port Mapping
Table 1. NCS1K-OLT-C port mapping

Callout

Port label

Controller types

1

LINE-0

Parent Controller: OTS0/0/0/0

Child Controller: OSC0/0/0/0, Line OTS-OCH 0/0/0/0/x

2

L-BAND-1

Parent Controller: OTS0/0/0/1

3

A/D 2

Parent Controller: OTS0/0/0/2

Child Controller: COM OTS-OCH 0/0/0/2/x

4

A/D 4

Parent Controller: OTS0/0/0/3

Child Controller: COM OTS-OCH 0/0/0/3/x

5

A/D 4-11

Parent Controller: OTS0/0/0/4-11

Child Controller: COM OTS-OCH 0/0/0/4-11/x

6

A/D 12-19

Parent Controller: OTS0/0/0/12-19

Child Controller: COM OTS-OCH 0/0/0/12-19/x

7

A/D 20-27

Parent Controller: OTS0/0/0/20-27

Child Controller: COM OTS-OCH 0/0/0/20-27/x

8

A/D 28-33

Parent Controller: OTS0/0/0/28-33

Child Controller: COM OTS-OCH 0/0/0/28-33/x

Figure 2. NCS1K-OLT-R-C
NCS1K-OLT-R-C Port Mapping
Table 2. NCS1K-OLT-R-C port mapping

Callout

Port label

Controller types

1

LINE-RX and LINE-0

Parent Controller: OTS0/0/0/0

Child Controller: OSC0/0/0/0, DFB0/0/0/0, Line OTS-OCH 0/0/0/0/x

2

L-BAND-1

Parent Controller: OTS0/0/0/1

3

A/D 2

Parent Controller: OTS0/0/0/2

Child Controller: COM OTS-OCH 0/0/0/2/x

4

A/D 3

Parent Controller: OTS0/0/0/3

Child Controller: COM OTS-OCH 0/0/0/3/x

5

A/D 4-11

Parent Controller: OTS0/0/0/4-11

Child Controller: COM OTS-OCH 0/0/0/4-11/x

6

A/D 12-19

Parent Controller: OTS0/0/0/12-19

Child Controller: COM OTS-OCH 0/0/0/12-19/x

7

A/D 20-27

Parent Controller: OTS0/0/0/20-27

Child Controller: COM OTS-OCH 0/0/0/20-27/x

8

A/D 28-33

Parent Controller: OTS0/0/0/28-33

Child Controller: COM OTS-OCH 0/0/0/28-33/x

Figure 3. NCS1K-OLT-L
NCS1K-OLT-L Port Mapping
Table 3. NCS1K-OLT-L port mapping

Callout

Port label

Controller types

1

LINE-0

Parent Controller: OTS0/0/0/0

Child Controller: OSC0/0/0/0, Line OTS-OCH 0/0/0/0/x

2

A/D 2

Parent Controller: OTS0/0/0/2

Child Controller: OSC0/0/0/2, Line OTS-OCH 0/0/0/2/x

3

A/D 3

Parent Controller: OTS0/0/0/3

The figures and tables show the three OLT variants that are introduced in Release 7.10.1 and the mapping between their physical ports and controllers:

Figure 4. NCS1K-E-OLT-L
NCS1K-E-OLT-L Port Mapping
Table 4. NCS1K-E-OLT-L port mapping

Callout

Port

Controller types

1

LINE-0

Parent Controller: OTS0/0/0/0

Child Controller: OSC0/0/0/0, Line OTS-OCH 0/0/0/0/x

2

2

Parent Controller: OTS0/0/0/2

Child Controller: COM OTS-OCH 0/0/0/2/x

3

3

Parent Controller: OTS0/0/0/3

Child Controller: COM OTS-OCH 0/0/0/3/x

4

4

Parent Controller: OTS0/0/0/4

Child Controller: COM OTS-OCH 0/0/0/4/x

5

5

Parent Controller: OTS0/0/0/5

Child Controller: COM OTS-OCH 0/0/0/5/x

6

6

Parent Controller: OTS0/0/0/6

Child Controller: COM OTS-OCH 0/0/0/6/x

7

7

Parent Controller: OTS0/0/0/7

Child Controller: COM OTS-OCH 0/0/0/7/x

8

8

Parent Controller: OTS0/0/0/8

Child Controller: COM OTS-OCH 0/0/0/8/x

9

9

Parent Controller: OTS0/0/0/9

Child Controller: COM OTS-OCH 0/0/0/9/x

10

10

Parent Controller: OTS0/0/0/10

Child Controller: COM OTS-OCH 0/0/0/10/x

11

11

Parent Controller: OTS0/0/0/11

Child Controller: COM OTS-OCH 0/0/0/11/x

12

12

Parent Controller: OTS0/0/0/12

Child Controller: COM OTS-OCH 0/0/0/12/x

13

13

Parent Controller: OTS0/0/0/13

Child Controller: COM OTS-OCH 0/0/0/13/x

14

14

Parent Controller: OTS0/0/0/14

Child Controller: COM OTS-OCH 0/0/0/14/x

15

15

Parent Controller: OTS0/0/0/15

Child Controller: COM OTS-OCH 0/0/0/15/x

16

16

Parent Controller: OTS0/0/0/16

Child Controller: COM OTS-OCH 0/0/0/16/x

17

17

Parent Controller: OTS0/0/0/17

Child Controller: COM OTS-OCH 0/0/0/17/x

18

18-25

Parent Controller: OTS0/0/0/18-25

Child Controller: COM OTS-OCH 0/0/0/18-25/x

19

26-33

Parent Controller: OTS0/0/0/26-33

Child Controller: COM OTS-OCH 0/0/0/26-33/x

Figure 5. NCS1K-E-OLT-C
NCS1K-E-OLT-C Port Mapping
Table 5. NCS1K-E-OLT-C port mapping

Callout

Port label

Controller types

1

LINE-0

Parent Controller: OTS0/0/0/0

Child Controller: OSC0/0/0/0, Line OTS-OCH 0/0/0/0/x

2

1

Parent Controller: OTS0/0/0/1

3

2

Parent Controller: OTS0/0/0/2

Child Controller: COM OTS-OCH 0/0/0/2/x

4

3

Parent Controller: OTS0/0/0/3

Child Controller: COM OTS-OCH 0/0/0/3/x

5

4

Parent Controller: OTS0/0/0/4

Child Controller: COM OTS-OCH 0/0/0/4/x

6

5

Parent Controller: OTS0/0/0/5

Child Controller: COM OTS-OCH 0/0/0/5/x

7

6

Parent Controller: OTS0/0/0/6

Child Controller: COM OTS-OCH 0/0/0/6/x

8

7

Parent Controller: OTS0/0/0/7

Child Controller: COM OTS-OCH 0/0/0/7/x

9

8

Parent Controller: OTS0/0/0/8

Child Controller: COM OTS-OCH 0/0/0/8/x

10

9

Parent Controller: OTS0/0/0/9

Child Controller: COM OTS-OCH 0/0/0/9/x

11

10

Parent Controller: OTS0/0/0/10

Child Controller: COM OTS-OCH 0/0/0/10/x

12

11

Parent Controller: OTS0/0/0/11

Child Controller: COM OTS-OCH 0/0/0/11/x

13

12

Parent Controller: OTS0/0/0/12

Child Controller: COM OTS-OCH 0/0/0/12/x

14

13

Parent Controller: OTS0/0/0/13

Child Controller: COM OTS-OCH 0/0/0/13/x

15

14

Parent Controller: OTS0/0/0/14

Child Controller: COM OTS-OCH 0/0/0/14/x

16

15

Parent Controller: OTS0/0/0/15

Child Controller: COM OTS-OCH 0/0/0/15/x

17

16

Parent Controller: OTS0/0/0/16

Child Controller: COM OTS-OCH 0/0/0/16/x

18

17

Parent Controller: OTS0/0/0/17

Child Controller: COM OTS-OCH 0/0/0/17/x

19

18-25

Parent Controller: OTS0/0/0/18-25

Child Controller: COM OTS-OCH 0/0/0/18-25/x

20

26-33

Parent Controller: OTS0/0/0/26-33

Child Controller: COM OTS-OCH 0/0/0/26-33/x

Figure 6. NCS1K-E-OLT-R-C
Note

In the image, the port that is highlighted in red is the Raman port.

NCS1K-E-OLT-R-C Port Mapping
Table 6. NCS1K-E-OLT-R-C port mapping

Callout

Port label

Controller types

1

LINE-0

Parent Controller: OTS0/0/0/0

Child Controller: OSC0/0/0/0, Line OTS-OCH 0/0/0/0/x

2

1

Parent Controller: OTS0/0/0/1

3

2

Parent Controller: OTS0/0/0/2

Child Controller: COM OTS-OCH 0/0/0/2/x

4

3

Parent Controller: OTS0/0/0/3

Child Controller: COM OTS-OCH 0/0/0/3/x

5

4

Parent Controller: OTS0/0/0/4

Child Controller: COM OTS-OCH 0/0/0/4/x

6

5

Parent Controller: OTS0/0/0/5

Child Controller: COM OTS-OCH 0/0/0/5/x

7

6

Parent Controller: OTS0/0/0/6

Child Controller: COM OTS-OCH 0/0/0/6/x

8

7

Parent Controller: OTS0/0/0/7

Child Controller: COM OTS-OCH 0/0/0/7/x

9

8

Parent Controller: OTS0/0/0/8

Child Controller: COM OTS-OCH 0/0/0/8/x

10

9

Parent Controller: OTS0/0/0/9

Child Controller: COM OTS-OCH 0/0/0/9/x

11

10

Parent Controller: OTS0/0/0/10

Child Controller: COM OTS-OCH 0/0/0/10/x

12

11

Parent Controller: OTS0/0/0/11

Child Controller: COM OTS-OCH 0/0/0/11/x

13

12

Parent Controller: OTS0/0/0/12

Child Controller: COM OTS-OCH 0/0/0/12/x

14

13

Parent Controller: OTS0/0/0/13

Child Controller: COM OTS-OCH 0/0/0/13/x

15

14

Parent Controller: OTS0/0/0/14

Child Controller: COM OTS-OCH 0/0/0/14/x

16

15

Parent Controller: OTS0/0/0/15

Child Controller: COM OTS-OCH 0/0/0/15/x

17

16

Parent Controller: OTS0/0/0/16

Child Controller: COM OTS-OCH 0/0/0/16/x

18

17

Parent Controller: OTS0/0/0/17

Child Controller: COM OTS-OCH 0/0/0/17/x

19

18-25

Parent Controller: OTS0/0/0/18-25

Child Controller: COM OTS-OCH 0/0/0/18-25/x

20

26-33

Parent Controller: OTS0/0/0/26-33

Child Controller: COM OTS-OCH 0/0/0/26-33/x