Sonet/Sdh; Platform Considerations; Table 18: Most Common Sonet/Sdh Implementations - Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual

JunosE 11.2.x Link Layer Configuration Guide

SONET/SDH

Platform Considerations

360
POS framing
Cyclic redundancy check (CRC) checking
Loopback configuration
SONET is an ANSI standard for transmitting bits over fiber-optic cable. SDH is the
international standard defined by the International Telecommunication Union (ITU).
SONET/SDH is the physical infrastructure of choice for carrier ATM networks operating
at speeds above 50 Mbps.
SONET/SDH allows carriers to build high-speed international links without requiring
conversion from one transmission protocol to another (for example, T1 to T3 or T1 to E3
conversion).
SONET transmission speeds start at 51.84 Mbps and are referred to as OC1. SDH
transmission speeds start at 155.52 Mbps and are referred to as STM1. All other speeds
are multiples of these base numbers. Table 18 on page 360 shows the speeds of the most
common SONET/SDH implementations.

Table 18: Most Common SONET/SDH Implementations

SONET SDH
OC1 —
OC3 STM1
OC12 STM4
OC48 STM16
OC96 STM32
OC192 STM64
You can configure POS interfaces on the following E Series Broadband Services Routers:
E120 router
E320 router
ERX1440 router
ERX1410 router
ERX710 router
ERX705 router
ERX310 router
Transmission Speed
51.84 Mbps
155.52 Mbps
622.08 Mbps
2.4 Gbps
4.876640 Gbps
9.953280 Gbps
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