SRX650 Services Gateway Gigabit-Backplane Physical Interface Modules
A Gigabit-Backplane Physical Interface Module (GPIM) is a network interface card (NIC) that installs in the front slots of the services gateway to provide physical connections to a LAN or a WAN. The GPIM receives incoming packets from a network and transmits outgoing packets to a network. These modules will complement the onboard Ethernet interfaces to extend the types and port counts of network connections for the LAN or WAN.
Interface Module Terminology:
- GPIM—The Gigabit-Backplane Interface Module (GPIM) includes standard GPIMs that are installed in a single-high, single-wide GPIM slot that has gigabit connectivity to the system backplane.
- XPIM—The XPIM can be installed only in the 20-gigabit
GPIM slots (slots 2 and 6 on the front panel). It may be:
- A single-high, single-wide LAN switch GPIM that uses one slot
- A double-high, single-wide LAN switch GPIM that uses two standard slots vertically
- A double-high, double-wide LAN switch GPIM that uses two standard slots vertically and two standard slots horizontally
Note: When installing the 24-Port Gigabit Ethernet XPIM, which uses four slots, you must install it in the 20-gigabit GPIM slots 2 and 6, which refer to the bottom four slots 1 to 4, or the top four slots 5 to 8.
Figure 1 shows how the slots on the front panel of the SRX650 Services Gateway are numbered.
Figure 1: SRX650 Services Gateway Slot Numbers
 | Caution: GPIMs are Online Insertion and Removal (OIR) capable. |
The services gateway chassis can hold GPIMs that use more than one standard slot:
- Double-high, single-wide, which uses two standard slots vertically
- Double-high, double-wide, which uses two vertical and two horizontal slots for a total of four standard slots
For more details about the supported GPIMs and XPIMs, see the SRX Series Services Gateway for the Branch Physical Interface Modules Hardware Guide.
Figure 2, Figure 3, and Figure 4 show the three form factors for the services gateway GPIMs.
Figure 2: Example of a Standard GPIM (Installs in One Standard Slot)
Figure 3: Example of a Double-High, Single-Wide XPIM
Figure 4: Example of a Double-High, Double-Wide XPIM
Since the services gateway GPIMs communicate with the backplane at various performance levels, you must install them in the correct slots.
