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Configuring Virtual Tributary Mapping of Channelized STM1 Interfaces

You can configure virtual tributary mapping to use KLM mode or ITU-T mode. To configure virtual tributary mapping, include the vtmapping statement at the [edit chassis fpc slot-number pic pic-number] hierarchy level:

[edit chassis fpc slot-number pic pic-number]
vtmapping (klm | itu-t);

By default, virtual tributary mapping uses KLM mode. For more information, see the JUNOS System Basics Configuration Guide.

For the Channelized STM1 IQ and IQE PICs, you can configure virtual tributary mapping by including the vtmapping statement at the [edit interfaces cau4-fpc/pic/port sonet-options] hierarchy level:

[edit interfaces cau4-fpc/pic/port sonet-options]
vtmapping (klm | itu-t);

Table 41 lists the KLM mappings used by the channelized STM1-to-E1 PIC interfaces. The PIC defaults to KLM numbering with an offset of –1; for example, KLM 1= STM1 PIC 0.

Table 41: Channelized STM1-to-E1 Channel Mapping

Channel Number

KLM Number

Tributary Unit Group 3

Tributary Unit Group 2

Virtual Tributary

ITU-T Number

0

1

1

1

1

1

1

2

1

1

2

22

2

3

1

1

3

43

3

4

1

2

1

4

4

5

1

2

2

25

5

6

1

2

3

46

6

7

1

3

1

7

7

8

1

3

2

28

8

9

1

3

3

49

9

10

1

4

1

10

10

11

1

4

2

31

11

12

1

4

3

52

12

13

1

5

1

13

13

14

1

5

2

34

14

15

1

5

3

55

15

16

1

6

1

16

16

17

1

6

2

37

17

18

1

6

3

58

18

19

1

7

1

19

19

20

1

7

2

40

20

21

1

7

3

61

21

22

2

1

1

2

22

23

2

1

2

23

23

24

2

1

3

44

24

25

2

2

1

5

25

26

2

2

2

26

26

27

2

2

3

47

27

28

2

3

1

8

28

29

2

3

2

29

29

30

2

3

3

50

30

31

2

4

1

11

31

32

2

4

2

32

32

33

2

4

3

53

33

34

2

5

1

14

34

35

2

5

2

35

35

36

2

5

3

56

36

37

2

6

1

17

37

38

2

6

2

38

38

39

2

6

3

59

39

40

2

7

1

20

40

41

2

7

2

41

41

42

2

7

3

62

42

43

3

1

1

3

43

44

3

1

2

24

44

45

3

1

3

45

45

46

3

2

1

6

46

47

3

2

2

27

47

48

3

2

3

48

48

49

3

3

1

9

49

50

3

3

2

30

50

51

3

3

3

51

51

52

3

4

1

12

52

53

3

4

2

33

53

54

3

4

3

54

54

55

3

5

1

15

55

56

3

5

2

36

56

57

3

5

3

57

57

58

3

6

1

18

58

59

3

6

2

39

59

60

3

6

3

60

60

61

3

7

1

21

61

62

3

7

2

42

62

63

3

7

3

63
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