In addition to the four built-in Gigabit Ethernet ports, J4350 and J6350 Services Routers also support a field-replaceable Gigabit Ethernet ePIM, which provides a physical connection to Gigabit Ethernet network media types. The field-replaceable Gigabit Ethernet ePIM is available in two versions, copper and SFP, and each version has one port.
The Gigabit Ethernet ePIM provides the following key features:
Gigabit Ethernet ePIMs do not support SNMP.
You can install Gigabit Ethernet ePIMs in any high-speed slot as follows:
![]() |
High speed slots are labeled with an E on the front-panel slot number diagram. |
Figure 10 shows the Copper Gigabit Ethernet ePIM.
Figure 10: Copper Gigabit Ethernet ePIM

You can manually configure the Copper Gigabit Ethernet ePIM to link speeds of 10, 100, or 1000 Mbps, and you can configure the transmission mode to half or full duplex.
For pinouts of cable connectors for Gigabit Ethernet ePIMs, see RJ-45 Connector Pinout for Gigabit Ethernet Ports.
Figure 11 shows the SFP Gigabit Ethernet ePIM.
Figure 11: SFP Gigabit Ethernet ePIM

The SFP Gigabit Ethernet ePIM, shown in Figure 11, uses small form-factor pluggable transceivers (SFPs) that allow different interfaces to be used on the ePIM. The ePIM supports 1000Base-LX, 1000Base–SX, and 1000Base-TX SFPs only; it does not support 1000Base-LH SFPs.
The SFP Gigabit Ethernet ePIM cannot be manually configured. It is set at 1000 Mbps and full duplex.
Connect the module with a single-mode or multimode optical cable.
![]() |
Configure Gigabit Ethernet interfaces up to a maximum MTU size of 9018 bytes. |
For alarms, see the configuring and monitoring alarms information in the J-series Services Router Administration Guide.
For instructions on installing and removing a PIM, see Replacing a PIM.
The LINK and TX/RX LEDs indicate link status and activity. Table 15 describes the meaning of the LEDs.
Table 15: Gigabit Ethernet Port LEDs