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author | ru <ru@FreeBSD.org> | 2004-07-03 18:29:24 +0000 |
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committer | ru <ru@FreeBSD.org> | 2004-07-03 18:29:24 +0000 |
commit | 1cf159866714352fd8d7789b97068220cbb5a1a4 (patch) | |
tree | 5526e5113f4e9589bb734483867453b89a7ca4e6 /share/man/man4/natmip.4 | |
parent | bf15efbfc56854d6fb20bb4ff7801d7549fe2bfd (diff) | |
download | FreeBSD-src-1cf159866714352fd8d7789b97068220cbb5a1a4.zip FreeBSD-src-1cf159866714352fd8d7789b97068220cbb5a1a4.tar.gz |
Mechanically kill hard sentence breaks and double whitespaces.
Diffstat (limited to 'share/man/man4/natmip.4')
-rw-r--r-- | share/man/man4/natmip.4 | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/share/man/man4/natmip.4 b/share/man/man4/natmip.4 index 2ef1b2c..82b2e74 100644 --- a/share/man/man4/natmip.4 +++ b/share/man/man4/natmip.4 @@ -10,7 +10,8 @@ .Cd "device atm" .Cd "options NATM" .Sh DESCRIPTION -The NATM protocol stack includes support for IP over ATM. Without any +The NATM protocol stack includes support for IP over ATM. +Without any additional signalling stacks or other modules it is possible to build a CLIP (classical IP over ATM) network based on PVCs. .Pp @@ -27,12 +28,14 @@ destination and the ATM characteristics of this channel. The address part of the link layer address (see .Xr link_addr 3 ) consists of a fixed part (the first 5 bytes) and a part that -depends on the kind of the PVC (UBR, CBR, VBR, ABR). Multi-byte values +depends on the kind of the PVC (UBR, CBR, VBR, ABR). +Multi-byte values are big-endian encoded: the bytes with the lower numbers contain the higher order bits. .Bl -tag -width "bytes 12...12" -offset indent .It byte 0 -Is a flag byte. Currently only flag 0x20 is used. +Is a flag byte. +Currently only flag 0x20 is used. When set, all IP frames are LLC/SNAP encapsulated before putting them into an AAL5 frame. Setting this flag is recommended and allows interoperability with other @@ -41,9 +44,11 @@ Note that BPF works only with LLC/SNAP encapsulation. .It byte 1 This is the VPI of the channel. .It bytes 2...3 -VCI of the channel. Must not be zero. +VCI of the channel. +Must not be zero. .It byte 4 -Traffic type. One of 0 (UBR), 1 (CBR), 2 (ABR), 3 (VBR). +Traffic type. +One of 0 (UBR), 1 (CBR), 2 (ABR), 3 (VBR). .El .Pp The variable part for UBR connections may be either empty or three bytes: @@ -111,7 +116,8 @@ can be reached and .Ar <lladdr> is the link layer address as a string of dot-separated, hexadecimal bytes. .Pp -NATM also supports the old, original format. This consists of 4 byte +NATM also supports the old, original format. +This consists of 4 byte link layer addresses (and the channels are implicit UBR): .Bl -tag -width "bytes 12...12" -offset indent .It byte 0 |