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115391-A Rev. A
Ethernet Topologies ...........................................................................................2-4
FDDI Overview .........................................................................................................2-5
The FDDI Standard ...........................................................................................2-6
FDDI Dual Counter-Rotating Ring Architecture .................................................2-7
FDDI Ring Operation .........................................................................................2-9
FDDI Ring Maintenance ..................................................................................2-10
FDDI SMT ........................................................................................................2-11
FDDI Hardware ................................................................................................2-13
Token Ring Overview .............................................................................................2-14
Token Ring Topology ........................................................................................2-14
Data Flow and Media Access Control .............................................................2-15
Overview of WAN Protocols ..........................................................................................2-16
E1 Overview ...........................................................................................................2-16
HSSI Overview .......................................................................................................2-17
ISDN Overview .......................................................................................................2-17
MCE1 and MCT1 Overview ...................................................................................2-18
Synchronous Overview ..........................................................................................2-18
T1 Overview ...........................................................................................................2-19
Frame Formats ................................................................................................2-19
Bipolar Format .................................................................................................2-22
DSU/CSU ........................................................................................................2-23
Chapter 3
Customizing LAN Interfaces
Editing CSMA/CD Lines .................................................................................................3-1
Enabling or Disabling an Ethernet Interface .............................................................3-2
Enabling or Disabling Breath of Life Messages ........................................................3-2
Setting the BofL Interval ...........................................................................................3-2
Setting the 100-Mb/s Interface Line Speed ..............................................................3-3
Automatic Line Negotiation ................................................................................3-3
Full-Duplex Congestion Control .........................................................................3-3
Configuring the CSMA/CD Automatic Negotiation Protocol .....................................3-4
Selecting Line Advertising Capabilities ..............................................................3-5
Viewing Line Negotiation Status ........................................................................3-5
Editing FDDI Lines ..........................................................................................................3-7
Enabling or Disabling the FDDI Interface .................................................................3-8
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