Basic HTML version of Foils prepared Dec. 6 98

Foil 14 Translational Bridging (3)

From Introduction to Network Security Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
1 Translation Challenges (Ethernet vs. Token Ring)
  • incompatible bit order in MAC address
  • embedded MAC address - in some cases MAC address can appear in the data portion of a frame (for example RIP)
  • incompatible MTU size - bridges do not handle frame fragmentation and reassembly
  • handling of exclusive Token Ring functions: monitor bit, reservation bit, priority mechanism, frame status bits
  • handling of routing information field information within Token Ring frames
  • incompatible spanning tree algorithms
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