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SDH, the physical layer backbone-technology, with up to 10 Gbps speed over
fiber, replaced the earlier PDH (34 to 140M) as the transmission technology for
interconnecting large nodes of the telephone network. However, today we find
more data over the backbone, hence we find more cases where packetizing releases
the SDH from its traditional shackles. The payload is not TDM anymore but a
statistical multiplexing of packets or cells. The updated seminar focuses more
on packets over fiber, with new topics such as GFP, LCAS, POS and RPR.
The course focuses on statistical multiplexing over SDH or SONET. We start with
ATM over SDH, continue with POS (IP over PPP over SDH) and RPR. Later we cover
virtual concatenation, LCAS and GFP protocols. GMPLS is also covered briefly. We
also discuss in details the issues of network management as implemented in the
USA and in Europe.
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- The Layers
- The Seven-Layer Model of OSI
- The Four-Layer Model of TCP/IP (Phy/Link, Network,
Transport,App)
- Three Layer Model of ATM
- Connection Oriented versus Connectionless (CLNP)
- ATM over SDH
- VC and VP
- HEC
- ATM over SDH
- POS – PPP over SONET / SDH
- RPR – Resilient Packet Ring
- Virtual Concatenation and LCAS
- Virtual Concatenation
- The Challenges in Provisioning
- The Challenge of BoD
- LCAS
- GFP
- The need
- The advantages over ATM and PPP
- General Framing Format
- Framing of packetized data – GFP-F
- Framing of transparent bit pipe – GFP-T
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- GMPLS
- OSS - Management of SDH
- Management Network - Q3, Qx. NE and GNE
- Agent and FCAS
- Filtering of Alarms
- TL-1
- Element Management System
- Where is the management system channel running?
- DCC (RS DCC and MS DCC)
- F-Channel - Use of the “F” overhead octet
- Out of Band Management – why
- Out of Band Management – How
- SNMP, IP-Tunneling
- Appendix
- List of Relevant ITU-T Standards
- List of Relevant ANSI Standards
- SONET vs. SDH
- Acronyms
- Conclusion
- Glossary
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