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Understanding CLI Output for Interfaces

The JUNOS software that operates on J-series Services Routers and SRX-series services gateways was originally developed for Juniper Networks routing platforms that support many ports, on interface cards called Physical Interface Cards (PICs). On these larger platforms, PICs are installed into slots on Flexible PIC Concentrators (FPCs), and FPCs are installed into slots in the router chassis.

For J-series Services Routers and SRX-series services gateways, PIM and IOC slots are detected internally by the JUNOS software as FPC slots, and the PIM or IOC in each slot is identified as a “PIC.” For example, in the following output, the three PIMs located in slots 0, 2, and 5 are reported as FPC 0, FPC 2, and FPC 5, and PIM 0 is reported as PIC 0:

user@host> show chassis hardware

Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                JN000192AB        J4350
Midplane         REV 02.04 710-010001  CORE99563        
System IO        REV 02.03 710-010003  CORE100885        System IO board
Routing Engine   RevX2.6  750-010005   IWGS40735451      RE-J.2
FPC 0                                                    FPC
  PIC 0                                                  2x FE
FPC 2            RevX2.1  750-010355   CORE100458        FPC
  PIC 0                                                  2x T1
FPC 5            REV 04   750-010353   AF04451744        FPC
  PIC 0                                                  2x FE

To understand the abbreviations for PICs that appear in JUNOS CLI output, see Table 16. For details, see the JUNOS Software with Enhanced Services Hardware Guide.

Table 16: PIC Abbreviations and Full Names

PIC Abbreviation in JUNOS CLI	PIC or IOC Name
2x FE	Dual-Port Fast Ethernet PIM
4x FE	4-Port Fast Ethernet ePIM
1x GE Copper	Copper Gigabit Ethernet ePIM (1 10-Mbps, 100-Mbps, or 1000-Mbps port)
1x GE SFP	SFP Gigabit Ethernet ePIM (1 fiber port)
1x SFP uPIM	1-Port Gigabit Ethernet uPIM
6x GE SFP uPIM	6-Port SFP Gigabit Ethernet uPIM
8x GE uPIM	8-Port Gigabit Ethernet uPIM
16x GE uPIM	16-Port Gigabit Ethernet uPIM
4x GE Base PIC	4 built-in Gigabit Ethernet ports on a chassis (fixed PIM)
1x 10GE	1-Port 10-Gigabit Ethernet IOC
10x 1GE	10-Port Gigabit Ethernet IOC
2x Serial	Dual-Port Serial PIM
2x T1	Dual-Port T1 PIM
2x E1	Dual-Port E1 PIM
2x CT1E1 /PRI	Dual-Port Channelized T1/E1/ISDN PRI PIM
1x T3	T3 PIM (1 port)
1x E3	E3 PIM (1 port)
4x BRI S/T	4-Port ISDN BRI S/T PIM
4x BRI U	4-Port ISDN BRI U PIM
1x ADSL Annex A	ADSL 2/2+ Annex A PIM (1 port, for POTS)
1x ADSL Annex B	ADSL 2/2+ Annex B PIM (1 port, for ISDN)
2x SHDSL (ATM)	G.SHDSL PIM (2-port two-wire mode or 1-port four-wire mode)
Integrated Services Module	WXC Integrated Services Module (ISM 200)

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