OSPF6D.CONF(5) OpenBSD Programmer's Manual OSPF6D.CONF(5)NAMEospf6d.conf - Open Shortest Path First daemon configuration file
DESCRIPTION
The ospf6d(8) daemon implements the Open Shortest Path First protocol
version 3 as described in RFC 5340.
SECTIONS
The ospf6d.conf config file is divided into three main sections.
Macros
User-defined variables may be defined and used later, simplifying
the configuration file.
Global Configuration
Global settings for ospf6d(8). A number of global settings can be
overruled in specific areas or interfaces.
Areas
An OSPF router must be a member of at least one area. Areas are
used to group interfaces, simplifying configuration.
MACROS
Macros can be defined that will later be expanded in context. Macro
names must start with a letter, and may contain letters, digits, and
underscores. Macro names may not be reserved words (for example, area,
interface, or hello-interval). Macros are not expanded inside quotes.
For example:
hi="5"
area 0.0.0.0 {
interface em0 {
hello-interval $hi
}
}
The same can be accomplished by specifying the hello-interval globally or
within the area declaration.
GLOBAL CONFIGURATION
All interface related settings can be configured globally, per area and
per interface. The only settings that can be set globally and not
overruled are listed below.
fib-update (yes|no)
If set to no, do not update the Forwarding Information Base,
a.k.a. the kernel routing table. The default is yes. Setting
fib-update to no will implicitly set the stub router option to
ensure that no traffic tries to transit via this router.
[no] redistribute (static|connected|default) [set ...]
[no] redistribute prefix [set ...]
[no] redistribute rtlabel label [set ...]
If set to connected, routes to directly attached networks will be
announced over OSPF. If set to static, static routes will be
announced over OSPF. If set to default, a default route pointing
to this router will be announced over OSPF. It is possible to
specify a network range with prefix; networks need to be part of
that range to be redistributed. Additionally it is possible to
redistribute based on route labels using the rtlabel keyword. By
default no additional routes will be announced over OSPF.
redistribute statements are evaluated in sequential order, from
first to last. The first matching rule decides if a route should
be redistributed or not. Matching rules starting with no will
force the route to be not announced. The only exception is
default, which will be set no matter what, and additionally no
cannot be used together with it.
It is possible to set the route metric and type for each
redistribute rule. type is either 1 or 2. The default value for
type is 1 and for metric is 100. Setting more than one option
needs curly brackets:
redistribute static set { metric 300 type 2 }
router-id address
Set the router ID; if not specified, the lowest IPv4 address of
the interfaces used by ospf6d(8) will be used. A router ID must
be specified if no IPv4 address is configured on any interfaces
used by ospf6d(8).
rtlabel label external-tag number
Map route labels to external route tags and vice versa. The
external route tag is a non-negative 32-bit number attached to
AS-external OSPF LSAs.
spf-delay seconds
Set SPF delay in seconds. The delay between receiving an update
to the link state database and starting the shortest path first
calculation. The default value is 1; valid range is 1-10
seconds.
spf-holdtime seconds
Set the SPF holdtime in seconds. The minimum time between two
consecutive shortest path first calculations. The default value
is 5 seconds; the valid range is 1-5 seconds.
stub router (yes|no)
If set to yes, all interfaces with active neighbors will have a
metric of infinity. This ensures that the other routers prefer
routes around this router while still being able to reach
directly connected IP prefixes. The stub router option is
automatically enabled if either the sysctl(8) variable
net.inet.ip.forwarding is set to a value different to 1 or if the
FIB is not coupled.
AREAS
Areas are used for grouping interfaces. All interface-specific
parameters can be configured per area, overruling the global settings.
area address
Specify an area section, grouping one or more interfaces.
area 0.0.0.0 {
interface em0
interface em1 {
metric 10
}
}
Area specific parameters are listed below.
demote group [count]
Increase the carp(4) demotion counter by count on the given
interface group, usually carp, when no neighbor in the area is in
an active state. The demotion counter will be decreased when one
neighbor in that area is in an active state. The default value
for count is 1.
For more information on interface groups, see the group keyword
in ifconfig(8).
INTERFACES
Each interface can have several parameters configured individually,
otherwise they are inherited. An interface is specified by its name.
interface em0 {
...
}
Interface-specific parameters are listed below.
demote group
Increase the carp(4) demotion counter by 1 on the given interface
group, usually carp, when the interface state is going down. The
demotion counter will be decreased when the interface state is
active again.
hello-interval seconds
Set the hello interval. The default value is 10; valid range is
1-65535 seconds.
metric cost
Set the interface metric a.k.a. cost. The default value is 10;
valid range is 1-65535.
passive
Prevent transmission and reception of OSPF packets on this
interface. The specified interface will be announced as a stub
network.
retransmit-interval seconds
Set retransmit interval. The default value is 5 seconds; valid
range is 5-3600 seconds.
router-dead-time seconds
Set the router dead time, a.k.a. neighbor inactivity timer. The
default value is 40 seconds; valid range is 2-2147483647 seconds.
When a neighbor has been inactive for router-dead-time its state
is set to DOWN. Neighbors that have been inactive for more than
24 hours are completely removed.
router-priority priority
Set the router priority. The default value is 1; valid range is
0-255. If set to 0 the router is not eligible as a Designated
Router or Backup Designated Router.
transmit-delay seconds
Set the transmit delay. The default value is 1; valid range is
1-3600 seconds.
FILES
/etc/ospf6d.conf ospf6d(8) configuration file
SEE ALSOospf6ctl(8), ospf6d(8), rc.conf.local(8)HISTORY
The ospf6d.conf file format first appeared in OpenBSD 4.2.
OpenBSD 4.9 May 17, 2010 OpenBSD 4.9
