diff options
Diffstat (limited to 'doc/bird.sgml')
| -rw-r--r-- | doc/bird.sgml | 46 |
1 files changed, 28 insertions, 18 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml index a6fa4df..82ff630 100644 --- a/doc/bird.sgml +++ b/doc/bird.sgml @@ -272,7 +272,7 @@ protocol rip { listen to IPv6 connections only. This is needed if you want to run both bird and bird6 on the same port. - <tag>timeformat route|protocol|base|log "<m/format1/" [<m/limit> "<m/format2/"]</tag> + <tag>timeformat route|protocol|base|log "<m/format1/" [<m/limit/ "<m/format2/"]</tag> This option allows to specify a format of date/time used by BIRD. The first argument specifies for which purpose such format is used. <cf/route/ is a format used in 'show route' @@ -280,8 +280,8 @@ protocol rip { command output, <cf/base/ is used for other commands and <cf/log/ is used in a log file. - "<m/format1/" is a format string using <i/strftime(3)/ - notation (see <i/man strftime/ for details). <m/limit> and + "<m/format1/" is a format string using <it/strftime(3)/ + notation (see <it/man strftime/ for details). <m/limit> and "<m/format2/" allow to specify the second format string for times in past deeper than <m/limit/ seconds. There are two shorthands: <cf/iso long/ is a ISO 8601 date/time format @@ -976,10 +976,13 @@ This allows to set routing policy and all the other parameters differently for each neighbor using the following configuration parameters: <descrip> - <tag>local as <m/number/</tag> Define which AS we are part of. (Note that - contrary to other IP routers, BIRD is able to act as a router located - in multiple AS'es simultaneously, but in such cases you need to tweak - the BGP paths manually in the filters to get consistent behavior.) + <tag>local <m/[ip]/] as <m/number/</tag> Define which AS we + are part of. (Note that contrary to other IP routers, BIRD is + able to act as a router located in multiple AS'es + simultaneously, but in such cases you need to tweak the BGP + paths manually in the filters to get consistent behavior.) + Optional <cf/ip/ argument specifies a source address, + equivalent to the <cf/source address/ option (see below). This parameter is mandatory. <tag>neighbor <m/ip/ as <m/number/</tag> Define neighboring router @@ -988,16 +991,27 @@ for each neighbor using the following configuration parameters: of your router's interfaces. In case the neighbor is in the same AS as we are, we automatically switch to iBGP. This parameter is mandatory. - <tag>multihop <m/number/ via <m/ip/</tag> Configure multihop BGP to a - neighbor which is connected at most <m/number/ hops far and to which - we should route via our direct neighbor with address <m/ip/. + <tag>multihop <m/[number]/]</tag> Configure multihop BGP + session to a neighbor that isn't directly connected. + Accurately, this option should be used if the configured + neighbor IP address does not match with any local network + subnets. Such IP address have to be reachable through system + routing table. For multihop BGP it is recommended to + explicitly configure <cf/source address/ to have it + stable. Optional <cf/number/ argument can be used to limit TTL + (the number of hops). Default: switched off. + <tag>source address <m/ip/</tag> Define local address we + should use for next hop calculation and as a source address + for the BGP session. Default: the address of the local + end of the interface our neighbor is connected to. + <tag>next hop self</tag> Avoid calculation of the Next Hop - attribute and always advertise our own source address (see - below) as a next hop. This needs to be used only occasionally - to circumvent misconfigurations of other routers. - Default: disabled. + attribute and always advertise our own source address as a + next hop. This needs to be used only occasionally to + circumvent misconfigurations of other routers. Default: + disabled. <tag>missing lladdr self|drop|ignore</tag>Next Hop attribute in BGP-IPv6 sometimes contains just the global IPv6 address, @@ -1015,10 +1029,6 @@ for each neighbor using the following configuration parameters: that case default is <cf/drop/, because route servers usually does not forward packets ifselves. - <tag>source address <m/ip/</tag> Define local address we should use - for next hop calculation. Default: the address of the local end - of the interface our neighbor is connected to. - <tag>password <m/string/</tag> Use this password for MD5 authentication of BGP sessions. Default: no authentication. Password has to be set by external utility (e.g. setkey(8)) on BSD systems. |