Juniper Networks M120 manual ATM2 OC12/STM4 IQ PICs

ATM2 OC12/STM4 IQ PICs

ATM2 OC12/STM4 IQ PICs

Left: 1-port ATM2 OC12/STM4 IQ PIC; Right: 2-port ATM2 OC12/STM4 IQ PIC

Software release	■	1-port: JUNOS 8.0R2 and later (Type 1)
	■	2-port: JUNOS 8.0R2 and later (Type 2)

NOTE: These PICs are not supported in JUNOS Release 8.1R1.

Description	■	One or two OC12 ports
	■	Power requirement:
		■ 1-port: 0.41 A @ 48 V (20 W)
		■ 2-port: 0.52 A @ 48 V (25 W)
	■ Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface
	■ Conforms to ANSI T1.105-1991 and T1E1.2/93-020R1
	■ Complies with ATM and SONET/SDH standards
	■ Alarm and event counting and detection
	■ Compatible with well-known ATM switches
	■ ATM switch ID, which displays the switch IP address and local interface name of the
		adjacent Fore ATM switches
Hardware features	■	ATM2 IQ 1-port OC12 PICs have one 3010 SAR for segmentation and reassembly into
		53-byte ATM cells; ATM2 IQ 2-port OC12 PICs have dual 3010 SAR

■ High-performance parsing of SONET/SDH frames

■ ASIC-based packet segmentation and reassembly (SAR) management and output port queuing

■ 64 MB SDRAM memory for ATM SAR ■ Packet buffering, Layer 2 parsing

ATM2 OC12/STM4 IQ PICs ■ 27