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Cisco IOS 12.0 Interface Configuration

Book Description

Cisco IOS 12.0 Interface Configuration is a comprehensive guide detailing how to configure physical and virtual interfaces-the two types of interfaces supported on Cisco routers. It provides readers with the most current router task and command information for their network environments and teaches how to effectively implement these techniques and commands on their networks.

Table of Contents

  1. Copyright
  2. Acknowledgments
  3. Interface Configuration Overview
    1. Interface Types Supported on Cisco Routers
    2. Understanding Interface Configuration
    3. Understanding Subinterfaces
    4. Configuring Features Available on Any Interface
      1. Adding a Description for an Interface
      2. Configuring MOP
      3. Controlling Interface Hold-Queue Limits
      4. Setting Bandwidth
      5. Setting Interface Delay
      6. Adjusting Timers
      7. Limiting Transmit Queue Size
      8. Adjusting Maximum Packet Size or MTU Size
    5. Understanding OIR
    6. Understanding Fast Switching Support
    7. Monitoring and Maintaining the Interface
      1. Monitoring Interface and Controller Status
      2. Monitoring the T1 or E1 Controller
      3. Monitoring and Maintaining CSU/DSU Service Modules
        1. Performing a Self-Test
        2. Displaying a Performance Report
        3. Performing Loopback Tests
        4. Performing a Loopback Line Test
        5. Performing Loopback DTE
        6. Performing a Remote Loopback Test by Using the FT1/T1 CSU/DSU Module
        7. Two- and Four-Wire, 56/64-kbps CSU/DSU Modules
        8. Resetting the CSU/DSU
      4. Monitoring the LAN Extender Interface
      5. Monitoring and Maintaining a Hub
        1. Shutting Down the Hub Port
        2. Resetting the Hub or Clearing the Hub Counters
        3. Monitoring the Hub
      6. Monitoring Tunnels
      7. Clearing and Resetting the Interface
      8. Shutting Down and Restarting the Interface
      9. Configuring Loopback Detection
      10. Running Interface Loopback Diagnostics
        1. Enabling Loopback Testing on the HSSI
        2. Enabling the Loopback Test to the DTE
        3. Enabling the Loopback Test through the CSU/DSU
        4. Enabling the Loopback Test over a Remote DS3 Link
        5. Configuring the Ethernet Loopback Server
        6. Enabling Loopback on Token Ring Cards
      11. Enabling Loopback Testing of Fractional T1/T1
    8. Interface Configuration Examples
      1. Enabling Interface Configuration Examples
        1. Configuring Specific IP Addresses for an Interface Example
      2. Interface Description Examples
      3. Interface Shutdown Examples
    9. About the Cisco IOS 12.0 Reference Library
      1. Cisco IOS Reference Library Organization
      2. Other Books Available in the Cisco IOS 12.0 Reference Library
      3. Book Conventions
      4. Command Syntax Conventions
      5. Cisco Connection Online
    10. Using Cisco IOS Software
      1. Getting Help
        1. Example: How to Find Command Options
      2. Understanding Command Modes
        1. Summary of Main Command Modes
      3. Using the No and Default Forms of Commands
      4. Saving Configuration Changes
  4. 1. Configuring LAN Interfaces
    1. Configuring an Ethernet or a Fast Ethernet Interface
      1. Ethernet and Fast Ethernet Interface Configuration Task List
        1. Specifying an Ethernet or a Fast Ethernet Interface
        2. Specifying an Ethernet Encapsulation Method
        3. Specifying Full-Duplex Operation
        4. Specifying the Media and Connector Type
        5. Extending the 10BaseT Capability
        6. Configuring Fast Ethernet 100BaseT
        7. Configuring the PA-12E/2FE Port Adapter
          1. Configuring the PA-12E/2FE Port Adapter
          2. Monitoring and Maintaining the PA-12E/2FE Port Adapter
          3. Configuring Bridge Groups by Using the 12E/2FE VLAN Configuration WebTool
        8. Configuring the 100VG-AnyLAN Port Adapter
    2. Configuring Fast EtherChannel
      1. Fast EtherChannel Configuration Task List
        1. Configuring the Port-Channel Interface
        2. Configuring the Fast Ethernet Interfaces
    3. Configuring a Fiber Distributed Data Interface
      1. Source-Route Bridging over FDDI on Cisco 4000-M, Cisco 4500-M, and Cisco 4700-M Routers
      2. Particle-Based Switching of Source-Route Bridge Packets on Cisco 7200 Series Routers
      3. Using Connection Management Information
      4. FDDI Configuration Task List
        1. Specifying a FDDI Interface
        2. Enabling FDDI Bridging Encapsulation
        3. Enabling Full-Duplex Mode on the FDDI
        4. Setting the Token Rotation Time
        5. Setting the Transmission Valid Timer
        6. Controlling the Transmission Timer
        7. Modifying the C-Min Timer
        8. Modifying the TB-Min Timer
        9. Modifying the FDDI Timeout Timer
        10. Controlling SMT Frame Processing
        11. Enabling Duplicate Address Checking
        12. Setting the Bit Control
        13. Controlling the CMT Microcode
        14. Starting and Stopping FDDI
        15. Setting the FDDI Frames-per-Token Limit
        16. Controlling the FDDI SMT Message Queue Size
        17. Preallocating Buffers for Bursty FDDI Traffic
    4. Configuring a Hub Interface
      1. Hub Interface Configuration Task List
        1. Enabling a Hub Port
        2. Disabling or Enabling Automatic Receiver Polarity Reversal
        3. Disabling or Enabling the Link Test Function
        4. Enabling Source Address Control
        5. Enabling the SNMP Illegal Address Trap
    5. Configuring a LAN Extender Interface
      1. Connecting a LAN Extender to a Core Router
        1. Expanded View of the Connection to a Core Router
        2. Management of the LAN Extender Interface
      2. Discovering the MAC Address
      3. Upgrading Software for the LAN Extender
      4. Configuring the LAN Extender
        1. Configuring and Creating a LAN Extender Interface
        2. Defining Packet Filters
          1. Filtering by MAC Address and Vendor Code
          2. Filtering by Protocol Type
        3. Controlling Priority Queuing
        4. Controlling the Sending of Commands to the LAN Extender
        5. Shutting Down and Restarting the LAN Extender's Ethernet Interface
        6. Restarting the LAN Extender
        7. Downloading a Software Image to the LAN Extender
        8. Troubleshooting the LAN Extender
    6. Configuring a Token Ring Interface
      1. Particle-Based Switching of Source-Route Bridge Packets on Cisco 7200 SeriesRouters
      2. Dedicated Token Ring Port Adapter
      3. Token Ring Interface Configuration Task List
        1. Specifying a Token Ring Interface
        2. Enabling Early Token Release
        3. Configuring PCbus Token Ring Interface Management
        4. Enabling the Token Ring Concentrator Port
        5. Monitoring and Maintaining the Port
    7. LAN Interface Configuration Examples
      1. Enabling Ethernet Encapsulation Example
      2. Enabling Full-Duplex Operation Example
      3. PA-12E/2FE Port Configuration Examples
      4. PA-VG100 Port Adapter Configuration Example
      5. Fast EtherChannel Configuration Examples
      6. FDDI Frames Configuration Example
      7. Hub Configuration Examples
        1. Hub Port Startup Examples
        2. Source Address for an Ethernet Hub Port Configuration Examples
        3. Hub Port Shutdown Examples
        4. Enabling SNMP Illegal Address Trap for Hub Port Example
      8. Enabling a LAN Extender Interface Example
      9. LAN Extender Interface Access List Examples
        1. Filtering by MAC Address Example
        2. Filtering by Ethernet Type Code Example
  5. 2. Configuring Serial Interfaces
    1. Configuring a High-Speed Serial Interface
      1. HSSI Configuration Task List
        1. Specifying a HSSI
        2. Specifying HSSI Encapsulation
        3. Invoking ATM on a HSSI Line
        4. Converting HSSI to Clock Master
        5. Disabling Fair Queuing
    2. Configuring a Synchronous Serial Interface
      1. Synchronous Serial Configuration Task List
        1. Specifying a Synchronous Serial Interface
        2. Specifying Synchronous Serial Encapsulation
        3. Configuring a JT2 6.3-MHz Serial Port Adapter
        4. Configuring Half-Duplex and Bisync for Synchronous Serial Port Adapters on Cisco 7200 Series Routers
          1. Configuring Half-Duplex Carrier Modes and Timers
        5. Configuring Compression Service Adapters on Cisco 7500 SeriesRouters
        6. Configuring Compression of HDLC Data
        7. Configuring Real-Time Transport Protocol Header Compression
        8. Configuring the CRC
        9. Using the NRZI Line-Coding Format
        10. Enabling the Internal Clock
        11. Inverting the Data
        12. Inverting the Transmit Clock Signal
        13. Setting Transmit Delay
        14. Configuring DTR Signal Pulsing
        15. Ignoring DCD and Monitoring DSR as Line Up/Down Indicator
        16. Specifying the Serial Network Interface Module Timing
        17. Specifying G.703 and E1-G.703/G.704 Interface Options
          1. Enabling Framed Mode
          2. Enabling CRC4 Generation
          3. Using Time Slot 16 for Data
          4. Specifying a Clock Source
    3. Configuring a Channelized T3 Interface Processor
      1. Channelized T3 Configuration Task List
        1. Configuring the T3 Controller
        2. Configuring Each T1 Channel
        3. Configuring External T1 Channels
        4. Troubleshooting the T3 and T1 Channels
          1. Enabling the Test Port
        5. Loopback T1 Channels
        6. Loopback T3 Lines
        7. Monitoring and Maintaining the CT3IP
        8. Configuring Maintenance Data Link Messages
        9. Enabling Performance Report Monitoring
        10. Enabling the BERT Test Pattern
        11. Enabling Remote FDL Loopbacks
    4. Configuring PA-E3 and PA-2E3 Serial Port Adapters
      1. PA-E3 and PA-2E3 Serial Port Adapter Configuration Task List
        1. Configuring the PA-E3 Port Adapter
        2. Troubleshooting the PA-E3 Port Adapter
        3. Monitoring and Maintaining the PA-E3 Port Adapter
    5. Configuring PA-T3 and PA-2T3 Serial Port Adapters
      1. PA-T3 and PA-2T3 Configuration Task List
        1. Configuring the PA-T3 Port Adapter
        2. Troubleshooting the PA-T3 Port Adapter
        3. Monitoring and Maintaining the PA-T3 Port Adapter
    6. Configuring a Packet OC-3 Interface
      1. Packet OC-3 Interface Configuration Task List
        1. Selecting a Packet OC-3 Interface
        2. Setting the MTU Size
        3. Configuring Framing
        4. Configuring an Interface for Internal Loopback
        5. Configuring an Interface for Line Loopback
        6. Setting the Source of the Transmit Clock
        7. Enabling Payload Scrambling
        8. Configuring an Alarm Indication Signal
    7. Configuring Automatic Protection Switching of Packet-over-SONET Circuits
      1. APS Configuration Task List
        1. Configuring APS Working and Protect Interfaces
        2. Configuring Other APS Options
        3. Monitoring and Maintaining APS
        4. Configuring SONET Alarm Reporting
        5. Configuring the Protection Switch
    8. Configuring Serial Interfaces for CSU/DSU Service Modules
      1. Fractional T1/FT/WIC CSU/DSU Service Module Configuration Task List
        1. Specifying the Clock Source
        2. Enabling Data Inversion Before Transmission
        3. Specifying the Frame Type of an FT1/T1 Line
        4. Specifying the CSU Line Build Out
        5. Specifying FT1/T1 Line-Code Type
        6. Enabling Remote Alarms
        7. Enabling Loopcodes That Initiate Remote Loopbacks
        8. Specifying Timeslots
        9. Enabling T1 CSU WIC
      2. Two-Wire and Four-Wire, 56/64-kbps CSU/DSU Service Module Configuration TaskList
        1. Setting the Clock Source
        2. Setting the Network Line Speed
        3. Enabling Scrambled Data Coding
        4. Changing Between Digital Data Service and Switched Dialup Modes
        5. Enabling Acceptance of a Remote Loopback Request
        6. Selecting a Service Provider
    9. Configuring Low-Speed Serial Interfaces
      1. Understanding Half-Duplex DTE and DCE State Machines
        1. Half-Duplex DTE State Machines
        2. Half-Duplex DCE State Machines
      2. Changing Between Controlled-Carrier and Constant-Carrier Modes
        1. Placing a Low-Speed Serial Interface in Controlled-Carrier Mode
        2. Placing a Low-Speed Serial Interface in Constant-Carrier Mode
      3. Tuning Half-Duplex Timers
      4. Changing Between Synchronous and Asynchronous Modes
        1. Returning a Low-Speed Serial Interface to Synchronous Mode
    10. Serial Interface Configuration Examples
      1. Enabling Interface Configuration Examples
        1. Configuring Specific IP Addresses for an Interface Example
      2. HSSI Configuration Examples
      3. Channelized T3 Interface Processor Configuration Examples
        1. CT3IP Configuration with Default Values Accepted Example
        2. CT3IP External Ports Configuration Example
        3. CT3IP MDL Example
        4. CT3IP Performance Monitoring Example
        5. CT3IP BERT Test Pattern Example
        6. CT3IP Remote FDL Loopback Example
      4. PA-E3 Serial Port Adapter Configuration Example
      5. PA-T3 and PA-2T3 Configuration Example
      6. Packet OC-3 Interface Configuration Examples
        1. Packet OC-3 Configuration with Default Values Accepted
        2. Two Routers Connected Back to Back
          1. First Router
          2. Second Router
      7. APS Configuration Examples
        1. Basic APS Configuration
        2. Multiple APS Interface Configuration
      8. CSU/DSU Service Module Examples
        1. FT1/T1 Examples
          1. Specifying a T1 Frame Type Example
          2. Specifying the CSU Line Build Out Example
          3. Specifying T1 Line-Code Type Example
          4. Enabling Loopcodes Example
          5. Specifying Timeslots Example
          6. Displaying a Performance Report Example
          7. Enabling Loopback Line Examples
          8. Loopback DTE Example
          9. Setting the Clock Source Example
          10. TI CSU WIC Configuration Example
        2. Two- and Four-Wire 56/64-kpbs Service Module Examples
          1. Setting the Network Line Speed Examples
          2. Enabling Scrambled Data Coding Example
          3. Enabling Switched Dialup Mode Example
          4. Displaying a Performance Report Example
          5. Setting a Remote Loopback Request Example
          6. Selecting a Service Provider Example
        3. E1-G.703/G.704 Serial Port Adapter Example
      9. Low-Speed Serial Interface Examples
        1. Setting Synchronous or Asynchronous Mode Examples
        2. Changing Between Controlled-Carrier and Constant-Carrier Modes Examples
        3. Tuning Half-Duplex Timers Example
        4. Cisco 4000 Series Router with 2T16S Serial Network Processor Example
  6. 3. Configuring Logical Interfaces
    1. Configuring a Loopback Interface
    2. Configuring a Null Interface
    3. Configuring a Tunnel Interface
      1. Advantages of Tunneling
      2. Special Considerations
      3. IP Tunneling Configuration Task List
        1. Specifying the Tunnel Interface
        2. Configuring the Tunnel Source
        3. Configuring the Tunnel Destination
        4. Configuring the Tunnel Mode
        5. Configuring End-to-End Checksumming
        6. Configuring a Tunnel Identification Key
        7. Configuring a Tunnel Interface to Drop Out-of-Order Datagrams
        8. Configuring Asynchronous Host Mobility
    4. Logical Interface Configuration Examples
      1. IP Tunneling Examples
        1. Routing Two AppleTalk Networks Across an IP-Only Backbone Example
          1. Router A
          2. Router B
        2. Routing a Private IP Network and a Novell Net Across a Public Service Provider Example
          1. Router A
          2. Router B
  7. 4. Configuring Interface Commands
    1. access-list (standard)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Related Commands
    2. access-list (type-code)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Related Commands
    3. aps authenticate
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    4. aps force
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    5. aps group
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    6. aps lockout
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    7. aps manual
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    8. aps protect
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    9. aps revert
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    10. aps timers
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    11. aps unidirectional
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    12. aps working
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    13. atm sonet
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    14. auto-polarity
      1. SyntaxDescription
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    15. bandwidth
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    16. cablelength
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    17. cablelength long
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    18. cablelength short
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    19. cas-group
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    20. channel-group (Fast EtherChannel)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    21. clear controller lex
      1. Command Mode
      2. Usage Guidelines
      3. Examples
    22. clear counters
      1. Command Mode
      2. Usage Guidelines
      3. Examples
      4. Related Commands
    23. clear hub
      1. Command Mode
      2. Usage Guidelines
      3. Example
      4. Related Commands
    24. clear hub counters
      1. Command Mode
      2. Usage Guidelines
      3. Example
      4. Related Commands
    25. clear interface
      1. Command Mode
      2. Usage Guidelines
      3. Examples
    26. clear interface fastethernet
      1. Command Mode
      2. Usage Guidelines
      3. Examples
    27. clear rif-cache
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    28. clear service-module serial
      1. Command Mode
      2. Usage Guidelines
      3. Example
      4. Related Commands
    29. clock rate
      1. Default
      2. Command Mode
      3. Usage Guidelines
        1. Cable Length
        2. Synchronous Serial Port Adapters
      4. Examples
    30. clock source(CT3IP)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    31. clock source (Cisco AS5200)
      1. Defaults
      2. Command Mode
      3. Usage Guidelines
      4. Example
    32. clock source (Cisco MC3810)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    33. clock source (controller)
      1. Defaults
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    34. clock source (interface)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
    35. cmt connect
      1. Command Mode
      2. Usage Guidelines
      3. Examples
    36. cmt disconnect
      1. Command Mode
      2. Usage Guidelines
      3. Examples
    37. compress
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    38. controller t3
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    39. copy flash lex
      1. Command Mode
      2. Usage Guidelines
      3. Example
      4. Related Commands
    40. copy tftp lex
      1. Command Mode
      2. Usage Guidelines
      3. Example
    41. crc
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    42. crc4
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    43. crc bits 5
      1. SyntaxDescription
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    44. cut-through
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    45. delay
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    46. dce-terminal-timing enable
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    47. description (controller)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    48. down-when-looped
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
        1. Backup Interfaces
        2. Testing an Interface with the Loopback Command
      5. Example
      6. Related Commands
    49. dsu bandwidth
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    50. dsu mode
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    51. dte-invert-txc
      1. SyntaxDescription
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    52. duplex
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    53. early-token-release
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Examples
    54. encapsulation
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    55. fddi burst-count
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    56. fddi c-min
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    57. fddi cmt-signal-bits
      1. Defaults
      2. Command Mode
      3. Usage Guidelines
      4. Example
    58. fddi duplicate-address-check
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    59. fddi encapsulate
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    60. fddi frames-per-token
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    61. fddi smt-frames
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    62. fddi tb-min
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    63. fddi tl-min-time
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    64. fddi t-out
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    65. fddi token-rotation-time
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
    66. fddi valid-transmission-time
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
    67. fdl
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    68. framing (E1/T1 controller)
      1. Defaults
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    69. framing (E3/T3 interface)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Command
    70. framing (T3 controller)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    71. full-duplex
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
        1. Support for This Command
        2. Use on FDDI
      5. Examples
      6. Related Commands
    72. half-duplex
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
        1. SDLC Interfaces
        2. Enable Full-Duplex Mode
      5. Example
      6. Related Commands
    73. half-duplex controlled-carrier
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Examples
      6. Related Commands
    74. half-duplex timer
      1. Default
      2. Command Mode
      3. Usage Guidelines
        1. Value Ranges
      4. Example
      5. Related Commands
    75. hold-queue
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    76. hssi external-loop-request
      1. SyntaxDescription
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    77. hssi internal-clock
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    78. hub
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    79. ignore-dcd
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
        1. Serial Interfaces in DTE Mode
        2. SDLC Multidrop Environments
      5. Example
    80. ignore-hw local-loopback
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    81. interface
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    82. interface dialer
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    83. interface fastethernet
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    84. interface group-async
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    85. interface port-channel
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    86. interface vg-anylan
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    87. international bit
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    88. invert data
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
        1. T1 Line Without B8ZS Encoding
        2. AMI Line Coding
      5. Example
      6. Related Commands
    89. invert rxclock
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    90. invert-transmit-clock
    91. invert txclock
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    92. keepalive
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    93. lex burned-in-address
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    94. lex input-address-list
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    95. lex input-type-list
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    96. lex priority-group
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    97. lex retry-count
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    98. lex timeout
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    99. linecode
      1. Defaults
      2. Command Mode
      3. Usage Guidelines
      4. Example
    100. link-test
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    101. local-lnm
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    102. loopback (interface)
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    103. loopback (E3/ T3 interface)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    104. loopback (T1 interface)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    105. loopback (T3 controller)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    106. loopback applique
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    107. loopback dte
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    108. loopback line
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    109. loopback remote (interface)
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    110. mdl
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    111. media-type
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
    112. mop enabled
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    113. mop sysid
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    114. mtu
      1. Defaults
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    115. national bit
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    116. nrzi-encoding
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
    117. physical-layer
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    118. port
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    119. pos flag
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    120. pos framing
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    121. pos internal-clock
    122. pos report
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    123. pos scramble-atm
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    124. pos threshold
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    125. pri-group
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    126. pulse-time
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    127. ring-speed
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    128. scramble
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    129. service-module 56k clock rate
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    130. service-module 56k clock source
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    131. service-module 56k data-coding
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    132. service-module 56k network-type
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    133. service-module 56k remote-loopback
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    134. service-module 56k switched-carrier
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    135. service-module t1 clock source
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    136. service-module t1 data-coding
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    137. service-module t1 fdl
      1. Default
      2. Command Mode
      3. Usage Guidelines
    138. service-module t1 framing
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    139. service-module t1 lbo
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    140. service-module t1 linecode
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    141. service-module t1 remote-alarm-enable
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    142. service-module t1 remote-loopback
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    143. service-module t1 timeslots
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    144. show aps
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Displays
      5. Related Commands
    145. show bridge group
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Display
    146. show compress
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Displays
      5. Related Commands
    147. show controllers cbus
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Displays
    148. show controllers ethernet
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
    149. show controllers fastethernet
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
      4. Related Commands
    150. show controllers fddi
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Display
    151. show controllers lex
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    152. show controllers mci
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Display
      5. Related Commands
    153. show controllers pcbus
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Display
    154. show controllers pos
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
    155. show controllers serial
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
    156. show controllers t1
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
    157. show controllers t3
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    158. show controllers token
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Display
      5. Related Commands
    159. show controllers vg-anylan
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
    160. show diag
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    161. show diagbus
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    162. show hub
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
      4. Related Commands
    163. show interfaces
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
      4. Sample Display with Custom Output Queuing
      5. Sample Display Including Weighted-Fair-Queuing Output
      6. Sample Display with Accounting Option
      7. Sample Show Interfaces Accounting Display
    164. show interfaces ethernet
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
      4. Sample Display on Cisco 7500 Series Routers
      5. Sample Display with Accounting Option
    165. show interfaces fastethernet
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    166. show interfaces fddi
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    167. show interfaces hssi
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    168. show interfaces ip-brief
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Display
    169. show interfaces lex
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    170. show interfaces loopback
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    171. show interfaces port-channel
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
      4. Related Commands
    172. show interfaces pos
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
      4. Related Commands
    173. show interfaces serial
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
      4. Sample Display with Frame Relay Encapsulation
      5. Sample Display with ANSI LMI
      6. Sample Display with LAPB Encapsulation
      7. Show Interfaces Serial with PPP
      8. Sample Display with SDLC Connections
      9. Sample Display with SDLLC
      10. Sample Display with Accounting Option
    174. show interfaces tokenring
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
    175. show interfaces tunnel
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
      4. Related Commands
    176. show interfaces vg-anylan
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
      4. Related Commands
    177. show ip interface
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
      4. Related Commands
    178. show pas eswitch address
      1. Command Mode
      2. Usage Guidelines
      3. Sample Display
    179. show rif
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Sample Display
    180. show service-module serial
      1. Command Mode
      2. Usage Guidelines
      3. Sample Displays
      4. Related Commands
    181. shutdown (controller)
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    182. shutdown (hub)
      1. Syntax Description
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    183. shutdown (interface)
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Examples
      6. Related Commands
    184. smt-queue-threshold
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    185. snmp trap illegal-address
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    186. source-address
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    187. speed
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    188. squelch
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    189. t1 bert
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    190. t1 clock source
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    191. t1 external
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    192. t1 fdl ansi
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    193. t1 framing
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    194. t1 linecode
      1. Default
      2. Command Mode
      3. Usage Guidelines
        1. AMI Line Coding
        2. B8ZS Line Coding
      4. Example
      5. Related Commands
    195. t1 test
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    196. t1 timeslot
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
    197. t1 yellow
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    198. test interface fastethernet
      1. Command Mode
      2. Usage Guidelines
      3. Example
      4. Related Commands
    199. test service-module
      1. Command Mode
      2. Usage Guidelines
      3. Example
      4. Related Commands
    200. timeslot
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands
    201. transmit-clock-internal
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    202. transmitter-delay
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    203. ts16
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
      6. Related Commands
    204. tunnel checksum
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    205. tunnel destination
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    206. tunnel key
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
    207. tunnel mode
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    208. tunnel sequence-datagrams
      1. Syntax Description
      2. Default
      3. Command Mode
      4. Usage Guidelines
      5. Example
    209. tunnel source
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Examples
      5. Related Commands
    210. tx-queue-limit
      1. Default
      2. Command Mode
      3. Usage Guidelines
      4. Example
      5. Related Commands