Juniper Networks M120 manual Optical interface support-See on page 96, on page 97

SONET/SDH OC12/STM4 (Multi-Rate) PICs with SFP

Software features	■ Optical diagnostics and related alarms
	■ Per-port SONET/SDH framing
	■	Link aggregation
	■ Alarm and event counting and detection
	■ Dual-router automatic protection switching (APS)
	■ Multiprotocol Label Switching (MPLS) fast reroute
	■	Encapsulations:
		■ High-Level Data Link Control (HDLC)
		■ Frame Relay
		■ Circuit cross-connect (CCC)
		■ Translational cross-connect (TCC)
		■ Point-to-Point Protocol (PPP)
Cables and connectors	You can install any transceiver supported by the PIC. For information about installing and
	removing transceivers, see the PIC and Transceiver Installation Instructions.
	■ Duplex LC/PC connector (Rx and Tx)
	■ Optical interface support—See Table 29 on page 96, Table 30 on page 97, and
		Table 31 on page 97
	NOTE: To extend the life of the laser, when a PIC is not being actively used with any valid
	links, take the PIC offline until you are ready to establish a link to another device. For
	information about taking a PIC offline, see the request chassis pic offline command in the
	JUNOS System Basics and Services Command Reference.
LEDs	One tricolor per port:
	■ Off—Not enabled

■ Green—Online with no alarms or failures

■ Amber—Online with alarms for remote failures

■ Red—Active with a local alarm; router has detected a failure

SONET/SDH OC12/STM4 (Multi-Rate) PICs with SFP ■ 95