Juniper Networks M20 manual SONET/SDH OC3c/STM1 PIC

SONET/SDH OC3c/STM1 PIC

SONET/SDH OC3c/STM1 PIC

Software release ■ JUNOS 3.1 and later

Description	■	Four OC3 ports
	■ Power requirements: 0.49 A/48 V @ 23.7 W
Hardware features	■	Multiplexing and demultiplexing
	■ Rate policing on input
	■ Rate shaping on output
	■ Packet buffering, Layer 2 parsing
Software features	■	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	■	Duplex SC/PC connector (Rx and Tx)
	■ Optical interface support—See Table 15 on page 58
	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 OC3c/STM1 PIC ■ 57