Technical Documentation

Global FPC Numbering for Interfaces in a Routing Matrix with a TX Matrix Plus Router

A routing matrix with a TX Matrix Plus router can contain up to four T1600 routers (line-card chassis) that are assigned numbers, from 0 through 3, depending on the hardware setup and connectivity to the TX Matrix Plus router. In the JUNOS CLI, lcc 0 through lcc 3 are used to refer to a T1600 router in a routing matrix. Each T1600 router can contain up to eight Flexible PIC Concentrators (FPCs) in FPC hardware slots labeled 0 through 7. Therefore, a routing matrix with a TX Matrix Plus router can contain up to 32 FPCs.

In the JUNOS CLI, an interface name has the following format:

type-fpc/pic/port

When you specify the fpc number for a T1600 router in a routing matrix, the JUNOS Software determines which T1600 router contains the specified FPC. Table 1 shows the basic correspondence between FPC hardware slot numbers (0 through 7), which are labeled on the T1600 chassis, and routing matrix FPC numbers (0 through 31), which are used in the JUNOS CLI.

Table 1: FPC Numbering for T1600 Routers in a Routing Matrix — Basic Correspondence

T1600 Router
in a Routing Matrix

Basic Correspondence of FPC Numbering

FPC
Hardware Slot Numbers

Global
FPC Numbers

LCC 0

0 – 7

0 – 7

LCC 1

0 – 7

8 – 15

LCC 2

0 – 7

16 – 23

LCC 3

0 – 7

24 – 31

To easily convert an FPC hardware slot number in a specific LCC (T1600 router) in a routing matrix to the corresponding global FPC number, use the conversion chart shown in Table 2. You can use the converted FPC number to configure the interfaces on the TX Matrix Plus router in your routing matrix.

Table 2: FPC Numbering for T1600 Routers in a Routing Matrix — Conversion Chart

Conversion Chart for FPC Numbering

 

 LCC 0 

 

FPC Hardware Slot Numbers

0

1

2

3

4

5

6

7

 

Example: In the interface name se-1/0/0, the global FPC number 1 refers to FPC hardware slot 1 in the T1600 router lcc0.

Global FPC Numbers

0

1

2

3

4

5

6

7

 

 LCC 1 

 

FPC Hardware Slot Numbers

0

1

2

3

4

5

6

7

 

Example: In the interface name t1-11/2/0, the global FPC number 11 refers to FPC hardware slot 3 in the T1600 router lcc1.

Global FPC Numbers

8

9

10

11

12

13

14

15

 

 LCC 2 

 

FPC Hardware Slot Numbers

0

1

2

3

4

5

6

7

 

Example: In the interface name so-20/0/1, the global FPC number 20 refers to FPC hardware slot 4 in the T1600 router lcc2.

Global FPC Numbers

16

17

18

19

20

21

22

23

 

 LCC 3 

 

FPC Hardware Slot Numbers

0

1

2

3

4

5

6

7

 

Example: In the interface name t3-31/1/0, the global FPC number 31 refers to the FPC in slot 7 in the T1600 router lcc3.

Global FPC Numbers

24

25

26

27

28

29

30

31

You can use a CLI operational command to display the numbers of the connected FPCs in a routing matrix. To display the FPC numbers in both ”global numbering” mode (0 through 31, as used to specify an interface name in a routing matrix) and associated ”local numbering” mode (LCC number and FPC physical slot number), you can use various forms of the show chassis location command. For more information, see Displaying Chassis Physical Locations for a Routing Matrix with a TX Matrix Plus Router.


Published: 2010-04-15