4-Port Fast Ethernet ePIM

You can install 4-Port Fast Ethernet ePIMs in any of the high-speed slots, as follows:

• J4350—Install up to two 4-Port Fast Ethernet ePIMs in slots 3 and 6.
• J6350—Install up to four 4-Port Fast Ethernet ePIMs in slots 2, 3, 5, and 6.

Note: For 4-port Fast Ethernet ePIMs, if you apply a CoS scheduler map on outgoing (egress) traffic, the router does not divide the bandwidth appropriately among the CoS queues. As a workaround, configure enforced CoS shaping on the ports.

The 4-Port 10/100-Mbps Fast Ethernet ePIM, shown in Figure 22, has four physical Fast Ethernet ports.

The 4-Port Fast Ethernet ePIM provides the following key features:

• Full-duplex and half-duplex modes.
• Autonegotiation through medium-dependent interface (MDI) and MDI crossover (MDI–X) support.

For pinouts of cable connectors for Fast Ethernet ePIMs, see Fast Ethernet RJ-45 Connector Pinout.

Note: 4-port Fast Ethernet ePIMs support a maximum frame size of 1514 bytes. Jumbo frames are not supported.

For information about installing and removing a PIM, see Replacing a PIM.

Fast Ethernet LEDs indicate link status and activity. Table 24 describes the meaning of the LEDs.

Table 24: LEDs for 4-Port Fast Ethernet ePIM

For alarms, see the configuring and monitoring alarms information in the J-series Services Router Administration Guide.