Juniper SRX5800 Hardware Manual page 122

Each MPC accepts up to two MICs. SRX-MIC-20GE-SFP is a 20-port
Gigabit Ethernet MIC with SFP.
Each port on a MIC corresponds to a unique interface name in the CLI.
In the syntax of an interface name, a hyphen (-) separates the media type
from the MPC number (represented as an FPC in the CLI). The MPC slot
number corresponds to the first number in the interface. The second
number in the interface corresponds to the logical PIC number. The last
number in the interface matches the port number on the MIC. Slashes
(/) separate the MPC number from the logical PIC number and port
number:
type-fpc/pic/port
type—Media type, which identifies the network device. For example:
ge—Gigabit Ethernet interface
so—SONET/SDH interface
xe—10-Gigabit Ethernet interface
For a complete list of media types, see Interface Naming Overview.
fpc—Slot in which the MPC is installed in an SRX5400, SRX5600, or
SRX5800 Services Gateway.
pic—Two Logical PICs on the MIC, numbered 0 or 1 when installed in
the first slot, and 2 or 3 when installed in the second slot.
port—Port number.
Figure 50 on page 123 shows the SRX-MIC-20GE-SFP MIC installed in
slot 0 of an MPC in slot 2 of an SRX5400, SRX5600, or SRX5800 Services
Gateway.
Figure 50: SRX-MIC-20GE-SFP Interface Port Mapping
SRX-MIC-20GE-SFP
ge-2/1/1 ge-2/1/3
ge-2/1/0 ge-2/1/2
ge-2/0/0 ge-2/0/2
ge-2/0/1
ge-2/0/3
The SRX-MIC-20GE-SFP MIC contains two logical PICs, numbered PIC
0 through PIC 1 in the CLI. Each logical PIC contains 10 ports numbered
0 through 9.
ge-2/1/5 ge-2/1/7
ge-2/1/6
ge-2/1/4 ge-2/1/8
ge-2/0/4
ge-2/0/6 ge-2/0/8
ge-2/0/5
ge-2/0/7
123
ge-2/1/9
ge-2/0/9