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diff --git a/doc/bird.sgml b/doc/bird.sgml index 72c386f2..62cf0768 100644 --- a/doc/bird.sgml +++ b/doc/bird.sgml @@ -1027,6 +1027,10 @@ This argument can be omitted if there exists only a single instance. number of networks, number of routes before and after filtering). If you use <cf/count/ instead, only the statistics will be printed. + <tag><label id="cli-mrt-dump">mrt dump table <m/name/|"<m/pattern/" to "<m/filename/" [filter <m/f/|where <m/c/]</tag> + Dump content of a routing table to a specified file in MRT table dump + format. See <ref id="mrt" name="MRT protocol"> for details. + <tag><label id="cli-configure">configure [soft] ["<m/config file/"] [timeout [<m/num/]]</tag> Reload configuration from a given file. BIRD will smoothly switch itself to the new configuration, protocols are reconfigured if possible, @@ -3052,6 +3056,83 @@ protocol kernel { # Secondary routing table </code> +<sect>MRT +<label id="mrt"> + +<sect1>Introduction +<label id="mrt-intro"> + +<p>The MRT protocol is a component responsible for handling the Multi-Threaded +Routing Toolkit (MRT) routing information export format, which is mainly used +for collecting and analyzing of routing information from BGP routers. The MRT +protocol can be configured to do periodic dumps of routing tables, created MRT +files can be analyzed later by other tools. Independent MRT table dumps can also +be requested from BIRD client. There is also a feature to save incoming BGP +messages in MRT files, but it is controlled by <ref id="proto-mrtdump" +name="mrtdump"> options independently of MRT protocol, although that might +change in the future. + +BIRD implements the main MRT format specification as defined in <rfc id="6396"> +and the ADD_PATH extension (<rfc id="8050">). + +<sect1>Configuration +<label id="mrt-config"> + +<p>MRT configuration consists of several statements describing routing table +dumps. Multiple independent periodic dumps can be done as multiple MRT protocol +instances. The MRT protocol does not use channels. There are two mandatory +statements: <cf/filename/ and <cf/period/. + +The behavior can be modified by following configuration parameters: + +<descrip> + <tag><label id="mrt-table">table <m/name/ | "<m/pattern/"</tag> + Specify a routing table (or a set of routing tables described by a + wildcard pattern) that are to be dumped by the MRT protocol instance. + Default: the master table. + + <tag><label id="mrt-filter">filter { <m/filter commands/ }</tag> + The MRT protocol allows to specify a filter that is applied to routes as + they are dumped. Rejected routes are ignored and not saved to the MRT + dump file. Default: no filter. + + <tag><label id="mrt-where">where <m/filter expression/</tag> + An alternative way to specify a filter for the MRT protocol. + + <tag><label id="mrt-filename">filename "<m/filename/"</tag> + Specify a filename for MRT dump files. The filename may contain time + format sequences with <it/strftime(3)/ notation (see <it/man strftime/ + for details), there is also a sequence "%N" that is expanded to the name + of dumped table. Therefore, each periodic dump of each table can be + saved to a different file. Mandatory, see example below. + + <tag><label id="mrt-period">period <m/number/</tag> + Specify the time interval (in seconds) between periodic dumps. + Mandatory. + + <tag><label id="mrt-always-add-path">always add path <m/switch/</tag> + The MRT format uses special records (specified in <rfc id="8050">) for + routes received using BGP ADD_PATH extension to keep Path ID, while + other routes use regular records. This has advantage of better + compatibility with tools that do not know special records, but it loses + information about which route is the best route. When this option is + enabled, both ADD_PATH and non-ADD_PATH routes are stored in ADD_PATH + records and order of routes for network is preserved. Default: disabled. +</descrip> + +<sect1>Example +<label id="mrt-exam"> + +<p><code> +protocol mrt { + table "tab*"; + where source = RTS_BGP; + filename "/var/log/bird/%N_%F_%T.mrt"; + period 300; +} +</code> + + <sect>OSPF <label id="ospf"> |