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Mon Jul 22 08:44:33 2013 UTC (10 years, 11 months ago) by misho
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CVS tags: v5_7p0, v5_7, HEAD

5.7

1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> 2: <HTML> 3: <HEAD> 4: <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> 5: <TITLE>Bundle layer</TITLE> 6: </HEAD> 7: <BODY text="#000000" bgcolor="#ffffff"> 8: 9: <A HREF="mpd.html">Mpd 5.7 User Manual</A> 10: : <A HREF="mpd17.html">Configuring Mpd</A> 11: : Bundle layer  12: Previous: <A HREF="mpd21.html">EAP</A>  13: Next: <A HREF="mpd23.html">Encryption (ECP) layer</A> 14: 15: 16: <HR NOSHADE> 17: <H2><A NAME="22"></A>4.4. Bundle layer<A NAME="bundle"></A></H2> 18: 19: This chapter describes commands that configure the bundle layer. 20: All of these commands (except <code>new</code>) 21: apply to the currently active bundle, i.e., 22: the bundle shown at the command line prompt. 23:  24: <dl> 25: 26: <dt><code>set bundle period seconds  27: set bundle hiwat percent  28: set bundle lowat percent  29: set bundle min-con seconds  30: set bundle min-dis seconds  31: set bundle links link1 [ ... ]</code><dd>These commands are only meaningful when bandwidth management is enabled. 32: Mpd will attempt to bring up a new link from the list specified 33: or take down an existing link when the utilization goes above 34: <code>hiwat</code> or below <code>lowat</code> percent, 35: respectively. The utilization is sampled every <code>period</code> 36: divided by 6 points, and is averaged over the past <code>period</code> seconds. 37: Mpd will not attempt to disconnect a link unless previous one was 38: disconnected at least <code>min-dis</code> seconds before. 39: Similarly, mpd will not open a link unless previous was opened at least 40: <code>min-con</code> seconds before. These two parameters 41: help prevent oscillations, but cause slower response time. 42: 43: <dt><code>set bundle fsm-timeout seconds</code><dd>This sets the finite state machine (FSM) retry interval for all 44: FSM's on this bundle. This command should only be used in exceptional 45: situations, such as doing PPP over high-latency satellite links. 46: The default is 2 seconds.  47: 48: <dt><code>set bundle accept option ...  49: set bundle deny option ...  50: set bundle enable option ...  51: set bundle disable option ...  52: set bundle yes option ...  53: set bundle no option ...</code><dd>These commands configure various bundle options. Most options 54: are bi-directional in that they can be independently 55: enabled and disabled in each direction. 56: 57: The <code>enable</code> and <code>disable</code> commands determine 58: whether we want the corresponding option. 59: The <code>accept</code> and <code>deny</code> commands determine 60: whether we will allow the peer to request the corresponding option. 61: 62: The <code>yes</code> command is the same as 63: <code>enable</code> and <code>accept</code>. 64: The <code>no</code> command is the same as 65: <code>disable</code> and <code>deny</code>. 66: 67: </dl> 68:  69: 70: The options available at the bundle layer are: 71:  72: <dl> 73: 74: <dt><code>bw-manage</code><dd>This command enables bandwidth management, in which mpd attempts 75: to dynamically adjust the number of connected links depending on the 76: traffic load. 77: The proper functioning of bandwidth management depends on the correct 78: latency and bandwidth information configured for each link; see the 79: <code>set link latency</code> and <code>set link bandwidth</code> 80: commands. 81: The default for this option is off -- mpd connects the links ``all or none.'' 82: 83: <dt><code>round-robin</code><dd>When multilink PPP is enabled and there are two or more links 84: connected, this option enables round robin packet scheduling 85: across the links. That is, instead of breaking each packet 86: into fragments and delivering the individual fragments over 87: all the links in the bundle, each packet is delivered whole 88: over single link. The link is chosen by rotating in round-robin 89: fashion over all the links in the bundle. 90: This option normally would result in higher latency and 91: possible delays due to TCP packets being received out of order; 92: however, it may help in certain situations of high packet 93: loss or broken peer equipment. 94: The default is disable. 95: 96: <dt><code>ipcp</code><dd>Enable/Disable IPCP negotiation. For details see 97: <A HREF="mpd26.html#ipcp">ipcp</A>. 98: The default is enable. 99: 100: <dt><code>ipv6cp</code><dd>Enable/Disable IPV6CP negotiation. 101: The default is disable. 102: 103: <dt><code>compression</code><dd>Enable/Disable CCP (Compression Control Protocol) negotiation. For details see 104: <A HREF="mpd24.html#compression">compression</A>. 105: The default is disable. 106: 107: <dt><code>encryption</code><dd>Enable/Disable ECP (Encryption Control Protocol) negotiation. For details see 108: <A HREF="mpd23.html#encryption">encryption</A>. 109: The default is disable. 110: 111: <dt><code>crypt-reqd</code><dd>Require encryption. 112: When encryption support is compiled into mpd, this option 113: causes mpd to drop the link if encryption cannot be succesfully 114: negotiated in both directions. This means in effect, ``use encryption 115: or don't connect at all.'' 116: The default is disable. 117: 118: </dl> 119:  120: <HR NOSHADE> 121: <A HREF="mpd.html">Mpd 5.7 User Manual</A> 122: : <A HREF="mpd17.html">Configuring Mpd</A> 123: : Bundle layer  124: Previous: <A HREF="mpd21.html">EAP</A>  125: Next: <A HREF="mpd23.html">Encryption (ECP) layer</A> 126: 127: 128: 129: </BODY> 130: </HTML>