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Doc: Dynamic BGP

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Ondrej Zajicek (work) 2019-04-30 16:16:50 +02:00
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commit dbbe4a783b
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doc/bird.sgml
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@ -2195,7 +2195,7 @@ using the following configuration parameters:
<cf/local 10.0.0.1; local as 65000;/ are valid). This parameter is
mandatory.
<tag><label id="bgp-neighbor">neighbor [<m/ip/] [port <m/number/] [as <m/number/] [internal|external]</tag>
<tag><label id="bgp-neighbor">neighbor [<m/ip/ | range <m/prefix/] [port <m/number/] [as <m/number/] [internal|external]</tag>
Define neighboring router this instance will be talking to and what AS
it is located in. In case the neighbor is in the same AS as we are, we
automatically switch to IBGP. Alternatively, it is possible to specify
@ -2205,6 +2205,14 @@ using the following configuration parameters:
parameter, this parameter may also be used multiple times with different
sub-options. This parameter is mandatory.
It is possible to specify network prefix (with <cf/range/ keyword)
instead of explicit neighbor IP address. This enables dynamic BGP
behavior, where the BGP instance listens on BGP port, but new BGP
instances are spawned for incoming BGP connections (if source address
matches the network prefix). It is possible to mix regular BGP instances
with dynamic BGP instances and have multiple dynamic BGP instances with
different ranges.
<tag><label id="bgp-iface">interface <m/string/</tag>
Define interface we should use for link-local BGP IPv6 sessions.
Interface can also be specified as a part of <cf/neighbor address/
@ -2236,6 +2244,16 @@ using the following configuration parameters:
session. Default: the address of the local end of the interface our
neighbor is connected to.
<tag><label id="bgp-dynamic-name">dynamic name "<m/text/"</tag>
Define common prefix of names used for new BGP instances spawned when
dynamic BGP behavior is active. Actual names also contain numberic
index to distinguish individual instances. Default: "dynbgp".
<tag><label id="bgp-dynamic-name">dynamic name digits <m/number/</tag>
Define minimum number of digits for index in names of spawned dynamic
BGP instances. E.g., if set to 2, then the first name would be
"dynbgp01". Default: 0.
<tag><label id="bgp-strict-bind">strict bind <m/switch/</tag>
Specify whether BGP listening socket should be bound to a specific local
address (the same as the <cf/source address/) and associated interface,