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Documentation update

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Ondrej Zajicek (work) 2016-04-11 00:41:10 +02:00 committed by Pavel Tvrdik
parent 5bcbcaebdb
commit 326ab26e62
1 changed files with 76 additions and 22 deletions
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@ -173,7 +173,7 @@ BIRD executable by configuring out routing protocols you don't use, and
<tag>-l</tag>
look for a configuration file and a communication socket in the current
working directory instead of in default system paths. However, paths
working directory instead of in default system locations. However, paths
specified by options <cf/-c/, <cf/-s/ have higher priority.
<tag>-R</tag>
@ -751,6 +751,10 @@ This argument can be omitted if there exists only a single instance.
Show router status, that is BIRD version, uptime and time from last
reconfiguration.
<tag>show interfaces [summary]</tag>
Show the list of interfaces. For each interface, print its type, state,
MTU and addresses assigned.
<tag>show protocols [all]</tag>
Show list of protocol instances along with tables they are connected to
and protocol status, possibly giving verbose information, if <cf/all/ is
@ -778,16 +782,18 @@ This argument can be omitted if there exists only a single instance.
Show contents of an OSPF LSA database. Options could be used to filter
entries.
<tag>show rip interfaces [<m/name/] ["<m/interface/"]</tag>
Show detailed information about RIP interfaces.
<tag>show rip neighbors [<m/name/] ["<m/interface/"]</tag>
Show a list of RIP neighbors and associated state.
<tag>show static [<m/name/]</tag>
Show detailed information about static routes.
<tag>show bfd sessions [<m/name/]</tag>
Show information about BFD sessions.
<tag>show interfaces [summary]</tag>
Show the list of interfaces. For each interface, print its type, state,
MTU and addresses assigned.
<tag>show symbols [table|filter|function|protocol|template|roa|<m/symbol/]</tag>
Show the list of symbols defined in the configuration (names of
protocols, routing tables etc.).
@ -3415,6 +3421,11 @@ protocol rip [&lt;name&gt;] {
RIP, the option is not supported for RIPng, as no further versions are
defined.
<tag>version only <m/switch/</tag>
Regardless of RIP version configured for the interface, BIRD accepts
incoming packets of any RIP version. This option restrict accepted
packets to the configured version. Default: no.
<tag>split horizon <m/switch/</tag>
Split horizon is a scheme for preventing routing loops. When split
horizon is active, routes are not regularly propagated back to the
@ -3559,7 +3570,7 @@ default route to prevent routing loops).
packets to a neighboring router, multipath routes specifying several (possibly
weighted) neighboring routers, device routes specifying forwarding to hosts on a
directly connected network, recursive routes computing their nexthops by doing
route table lookups for a given IP and special routes (sink, blackhole etc.)
route table lookups for a given IP, and special routes (sink, blackhole etc.)
which specify a special action to be done instead of forwarding the packet.
<p>When the particular destination is not available (the interface is down or
@ -3567,8 +3578,26 @@ the next hop of the route is not a neighbor at the moment), Static just
uninstalls the route from the table it is connected to and adds it again as soon
as the destination becomes adjacent again.
<p>The Static protocol does not have many configuration options. The definition
of the protocol contains mainly a list of static routes:
<p>There are three classes of definitions in Static protocol configuration --
global options, static route definitions, and per-route options. Usually, the
definition of the protocol contains mainly a list of static routes.
<p>Global options:
<descrip>
<tag>check link <m/switch/</tag>
If set, hardware link states of network interfaces are taken into
consideration. When link disappears (e.g. ethernet cable is unplugged),
static routes directing to that interface are removed. It is possible
that some hardware drivers or platforms do not implement this feature.
Default: off.
<tag>igp table <m/name/</tag>
Specifies a table that is used for route table lookups of recursive
routes. Default: the same table as the protocol is connected to.
</descrip>
<p>Route definitions (each may also contain a block of per-route options):
<descrip>
<tag>route <m/prefix/ via <m/ip/</tag>
@ -3576,7 +3605,7 @@ of the protocol contains mainly a list of static routes:
interface can be specified as a part of the address (e.g.,
<cf/via fe80::1234%eth0/).
<tag>route <m/prefix/ multipath via <m/ip/ [weight <m/num/] [via ...]</tag>
<tag>route <m/prefix/ multipath via <m/ip/ [weight <m/num/] [bfd </m/switch/] [via ...]</tag>
Static multipath route. Contains several nexthops (gateways), possibly
with their weights.
@ -3592,17 +3621,33 @@ of the protocol contains mainly a list of static routes:
Special routes specifying to silently drop the packet, return it as
unreachable or return it as administratively prohibited. First two
targets are also known as <cf/drop/ and <cf/reject/.
</descrip>
<tag>check link <m/switch/</tag>
If set, hardware link states of network interfaces are taken into
consideration. When link disappears (e.g. ethernet cable is unplugged),
static routes directing to that interface are removed. It is possible
that some hardware drivers or platforms do not implement this feature.
Default: off.
<p>Per-route options:
<tag>igp table <m/name/</tag>
Specifies a table that is used for route table lookups of recursive
routes. Default: the same table as the protocol is connected to.
<descrip>
<tag>bfd <m/switch/</tag>
The Static protocol could use BFD protocol for next hop liveness
detection. If enabled, a BFD session to the route next hop is created
and the static route is BFD-controlled -- the static route is announced
only if the next hop liveness is confirmed by BFD. If the BFD session
fails, the static route is removed. Note that this is a bit different
compared to other protocols, which may use BFD as an advisory mechanism
for fast failure detection but ignores it if a BFD session is not even
established.
This option can be used for static routes with a direct next hop, or
also for for individual next hops in a static multipath route (see
above). Note that BFD protocol also has to be configured, see
<ref id="sect-bfd" name="BFD"> section for details. Default value is no.
<tag><m/filter expression/</tag>
This is a special option that allows filter expressions to be configured
on per-route basis. Can be used multiple times. These expressions are
evaluated when the route is originated, similarly to the import filter
of the static protocol. This is especially useful for configuring route
attributes, e.g., <cf/ospf_metric1 = 100;/ for a route that will be
exported to the OSPF protocol.
</descrip>
<p>Static routes have no specific attributes.
@ -3611,14 +3656,23 @@ of the protocol contains mainly a list of static routes:
<p><code>
protocol static {
table testable; # Connect to a non-default routing table
table testable; # Connect to a non-default routing table
check link; # Advertise routes only if link is up
route 0.0.0.0/0 via 198.51.100.130; # Default route
route 10.0.0.0/8 multipath # Multipath route
route 10.0.0.0/8 multipath # Multipath route
via 198.51.100.10 weight 2
via 198.51.100.20
via 198.51.100.20 bfd # BFD-controlled next hop
via 192.0.2.1;
route 203.0.113.0/24 unreachable; # Sink route
route 10.2.0.0/24 via "arc0"; # Secondary network
route 10.2.0.0/24 via "arc0"; # Secondary network
route 192.168.10.0/24 via 198.51.100.100 {
ospf_metric1 = 20; # Set extended attribute
}
route 192.168.10.0/24 via 198.51.100.100 {
ospf_metric2 = 100; # Set extended attribute
ospf_tag = 2; # Set extended attribute
bfd; # BFD-controlled route
}
}
</code>