/share/man/man4/ng_atmllc.4

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  1. .\" Copyright (c) 2004 Benno Rice <benno@FreeBSD.org>
    2. 

  2. .\" All rights reserved.
    3. 

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  5. .\" modification, are permitted provided that the following conditions
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  8. .\"    notice, this list of conditions and the following disclaimer.
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  13. .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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  14. .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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  25. .\" $FreeBSD$
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  26. .\"
    27. 

  27. .Dd March 8, 2004
    28. 

  28. .Dt NG_ATMLLC 4
    29. 

  29. .Os
    30. 

  30. .Sh NAME
    31. 

  31. .Nm ng_atmllc
    32. 

  32. .Nd ATM LLC netgraph node type
    33. 

  33. .Sh SYNOPSIS
    34. 

  34. .In netgraph/ng_atmllc.h
    35. 

  35. .Sh DESCRIPTION
    36. 

  36. The
    37. 

  37. .Nm atmllc
    38. 

  38. node type translates frames in to and out of ATM LLC encapsulation,
    39. 

  39. as specified by RFC 1483.
    40. 

  40. In LLC encapsulation the protocol of a given protocol data unit (PDU) is
    41. 

  41. specified by an IEEE 802.2 LLC header, possibly followed by an IEEE 802.1a
    42. 

  42. SubNetwork Attachment Point (SNAP) header.
    43. 

  43. This node currently handles the Ethernet and FDDI protocols.
    44. 

  44. .Pp
    45. 

  45. The node transmits and receives ATM PDUs on the
    46. 

  46. .Va atm
    47. 

  47. hook.
    48. 

  48. Received PDUs are decoded and forwarded to the
    49. 

  49. .Va ether
    50. 

  50. or
    51. 

  51. .Va fddi
    52. 

  52. hooks as appropriate.
    53. 

  53. Data received on the
    54. 

  54. .Va ether
    55. 

  55. or
    56. 

  56. .Va fddi
    57. 

  57. hooks are assumed to be full Ethernet or FDDI packets as appropriate and are
    58. 

  58. encapsulated into a PDU and transmitted via the
    59. 

  59. .Va atm
    60. 

  60. hook.
    61. 

  61. .Sh HOOKS
    62. 

  62. This node type supports the following hooks:
    63. 

  63. .Bl -tag -width indent
    64. 

  64. .It Va atm
    65. 

  65. ATM connection.
    66. 

  66. Typically, this hook would be connected to a
    67. 

  67. .Xr ng_atm 4
    68. 

  68. node, which handles transmission of ATM PDUs over an ATM device.
    69. 

  69. .It Va ether
    70. 

  70. Ethernet connection.
    71. 

  71. This hook sends and receives Ethernet frames.
    72. 

  72. This would normally be connected to an
    73. 

  73. .Xr ng_eiface 4
    74. 

  74. node if in use.
    75. 

  75. .It Va fddi
    76. 

  76. FDDI connection.
    77. 

  77. This hook sends and receives FDDI frames.
    78. 

  78. .El
    79. 

  79. .Sh CONTROL MESSAGES
    80. 

  80. This node type supports the generic control messages.
    81. 

  81. .Sh SHUTDOWN
    82. 

  82. This node shuts down upon receipt of a
    83. 

  83. .Dv NGM_SHUTDOWN
    84. 

  84. control message, or when all hooks have been disconnected.
    85. 

  85. .Sh SEE ALSO
    86. 

  86. .Xr netgraph 4 ,
    87. 

  87. .Xr ng_atm 4 ,
    88. 

  88. .Xr ng_eiface 4 ,
    89. 

  89. .Xr ngctl 8
    90. 

  90. .Rs
    91. 

  91. .%A J. Heinanen
    92. 

  92. .%T "Multiprotocol Encapsulation over ATM Adaptation Layer 5"
    93. 

  93. .%O RFC 1483
    94. 

  94. .Re
    95. 

  95. .Sh AUTHORS
    96. 

  96. .An Benno Rice Aq benno@FreeBSD.org
    97.