Juniper Networks M20 - Manual (Page 21)

Gigabit Ethernet PIC
■ JUNOS 3.2 and later Software release
■ One Gigabit Ethernet port
■ Power requirement:
■ Supports large Ethernet frame sizes for more efficient throughput across the intra-POP
network
Description
■ High-performance throughput on all ports at speeds up to 1 Gbps
■ Autonegotiation between Gigabit Ethernet circuit partners
■ Full-duplex mode
■ Maximum transmission units (MTUs) of up to 9192 bytes
Hardware features
■ Virtual Router Redundancy Protocol (VRRP) support
■ 802.1Q virtual LANs (VLANs) support
■ 64 source MAC address filters per port
■ 960 destination MAC filters per port
Software features
■ Duplex SC connector (TX and RX)
■ Optical interface support—see Table 4 on page 22
Cables and connectors
Status LEDs, one bicolor:
■ Off—PIC not enabled
■ Green—PIC is operating normally
■ Red—PIC has an error or failure
Port LEDs, one pair per port:
■ Link—If green, the port is online; if there is no light, the port is down
■ Activity—If flashing green, the port is receiving data; if there is no light, the port might
be on, but is not receiving data
LEDs
Gigabit Ethernet PIC ■ 21
Gigabit Ethernet PIC