Basic HTML version of Foils prepared Dec. 6 98

Foil 51 SMDS - Switched Multi-megabit Data Services (1)

From Introduction to Network WANs Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
1 SMDS service allows to interconnect LANs in a citywide area. It is full service, not just technology. SMDS exists for several years
2 Characteristics
  • Fixed-size cell relay technology: cell size 53 Bytes
  • A cell is called "SMDS SIP Layer 2 PDU"
  • Packet size: up to 9,188 Bytes (split into 53 B cells)
  • Switching technology
  • Connection-less service (no wait for end-to-end connection)
  • Error checking and flow control done by end-nodes.
  • Transmission rates: 4, 10, 16, 25 and 34 Mbps
  • Multicast addressing is supported
  • LAN-to-LAN connection at high speeds and low delay
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