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+@node OSPFv2, OSPFv3, RIPng, Top
+@comment  node-name,  next,  previous,  up
+@chapter OSPFv2
+
+  OSPF version 2 is a routing protocol which described in
+@asis{RFC2328} - @cite{OSPF Version 2}.  OSPF is IGP (Interior Gateway
+Protocols).  Compared with RIP, OSPF can provide scalable network
+support and faster convergence time.  OSPF is widely used in large
+networks such as ISP backbone and enterprise networks.
+
+@menu
+* Configuring ospfd::           
+* OSPF router::                 
+* OSPF area::                   
+* OSPF interface::              
+* Redistribute routes to OSPF::  
+* Showing OSPF information::    
+* Debugging OSPF::              
+@end menu
+
+@node Configuring ospfd, OSPF router, OSPFv2, OSPFv2
+@comment  node-name,  next,  previous,  up
+@section Configuring ospfd
+
+There is no @command{ospfd} specific options.  Common options can be
+specified (@pxref{Common Invocation Options}) to @command{ospfd}.
+@command{ospfd} needs interface information from @command{zebra}.  So
+please make it sure @command{zebra} is running before invoking
+@command{ospfd}.
+
+Like other daemons, @command{ospfd} configuration is done in OSPF
+specific configuration file @file{ospfd.conf}.
+
+@node OSPF router, OSPF area, Configuring ospfd, OSPFv2
+@comment  node-name,  next,  previous,  up
+@section OSPF router
+
+To start OSPF process you have to specify the OSPF router.  As of this
+writing, @command{ospfd} does not support multiple OSPF processes.
+
+@deffn Command {router ospf} {}
+@deffnx Command {no router ospf} {}
+Enable or disable the OSPF process.  @command{ospfd} does not yet
+support multiple OSPF processes.  So you can not specify an OSPF process
+number.
+@end deffn
+
+@deffn {OSPF Command} {ospf router-id @var{a.b.c.d}} {}
+@deffnx {OSPF Command} {no ospf router-id} {}
+@end deffn
+
+@deffn {OSPF Command} {ospf abr-type @var{type}} {}
+@deffnx {OSPF Command} {no ospf abr-type @var{type}} {}
+@var{type} can be cisco|ibm|shortcut|standard
+@end deffn
+
+@deffn {OSPF Command} {ospf rfc1583compatibility} {}
+@deffnx {OSPF Command} {no ospf rfc1583compatibility} {}
+@end deffn
+
+@deffn {OSPF Command} {passive interface @var{interface}} {}
+@deffnx {OSPF Command} {no passive interface @var{interface}} {}
+@end deffn
+
+@deffn {OSPF Command} {timers spf <0-4294967295> <0-4294967295>} {}
+@deffnx {OSPF Command} {no timers spf} {}
+@end deffn
+
+@deffn {OSPF Command} {refresh group-limit <0-10000>} {}
+@deffnx {OSPF Command} {refresh per-slice <0-10000>} {}
+@deffnx {OSPF Command} {refresh age-diff <0-10000>} {}
+@end deffn
+
+@deffn {OSPF Command} {auto-cost refrence-bandwidth <1-4294967>} {}
+@deffnx {OSPF Command} {no auto-cost refrence-bandwidth} {}
+@end deffn
+
+@deffn {OSPF Command} {network @var{a.b.c.d/m} area @var{a.b.c.d}} {}
+@deffnx {OSPF Command} {network @var{a.b.c.d/m} area @var{<0-4294967295>}} {}
+@deffnx {OSPF Command} {no network @var{a.b.c.d/m} area @var{a.b.c.d}} {}
+@deffnx {OSPF Command} {no network @var{a.b.c.d/m} area @var{<0-4294967295>}} {}
+This command specifies the OSPF enabled interface.  If the interface has
+an address of 10.0.0.1/8 then the command below provides network
+information to the ospf routers
+@example
+@group
+router ospf
+ network 10.0.0.0/8 area 0
+@end group
+@end example
+the network command's mask length should be the same as the interface
+address's mask.
+@end deffn
+
+@node OSPF area, OSPF interface, OSPF router, OSPFv2
+@comment  node-name,  next,  previous,  up
+@section OSPF area
+
+@deffn {OSPF Command} {area @var{a.b.c.d} range @var{a.b.c.d/m}} {}
+@deffnx {OSPF Command} {area <0-4294967295> range @var{a.b.c.d/m}} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} range @var{a.b.c.d/m}} {}
+@deffnx {OSPF Command} {no area <0-4294967295> range @var{a.b.c.d/m}} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} range IPV4_PREFIX suppress} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} range IPV4_PREFIX suppress} {}
+@deffnx {OSPF Command} {area @var{a.b.c.d} range IPV4_PREFIX substitute IPV4_PREFIX} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} range IPV4_PREFIX substitute IPV4_PREFIX} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} virtual-link @var{a.b.c.d}} {}
+@deffnx {OSPF Command} {area <0-4294967295> virtual-link @var{a.b.c.d}} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} virtual-link @var{a.b.c.d}} {}
+@deffnx {OSPF Command} {no area <0-4294967295> virtual-link @var{a.b.c.d}} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} shortcut} {}
+@deffnx {OSPF Command} {area <0-4294967295> shortcut} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} shortcut} {}
+@deffnx {OSPF Command} {no area <0-4294967295> shortcut} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} stub} {}
+@deffnx {OSPF Command} {area <0-4294967295> stub} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} stub} {}
+@deffnx {OSPF Command} {no area <0-4294967295> stub} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} stub no-summary} {}
+@deffnx {OSPF Command} {area <0-4294967295> stub no-summary} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} stub no-summary} {}
+@deffnx {OSPF Command} {no area <0-4294967295> stub no-summary} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} default-cost <0-16777215>} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} default-cost <0-16777215>} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} export-list NAME} {}
+@deffnx {OSPF Command} {area <0-4294967295> export-list NAME} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} export-list NAME} {}
+@deffnx {OSPF Command} {no area <0-4294967295> export-list NAME} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} import-list NAME} {}
+@deffnx {OSPF Command} {area <0-4294967295> import-list NAME} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} import-list NAME} {}
+@deffnx {OSPF Command} {no area <0-4294967295> import-list NAME} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} authentication} {}
+@deffnx {OSPF Command} {area <0-4294967295> authentication} {}
+@deffnx {OSPF Command} {no area @var{a.b.c.d} authentication} {}
+@deffnx {OSPF Command} {no area <0-4294967295> authentication} {}
+@end deffn
+
+@deffn {OSPF Command} {area @var{a.b.c.d} authentication message-digest} {}
+@deffnx {OSPF Command} {area <0-4294967295> authentication message-digest} {}
+@end deffn
+
+@node OSPF interface, Redistribute routes to OSPF, OSPF area, OSPFv2
+@comment  node-name,  next,  previous,  up
+@section OSPF interface
+
+@deffn {Interface Command} {ip ospf authentication-key AUTH_KEY} {}
+@deffnx {Interface Command} {no ip ospf authentication-key} {}
+Set OSPF authentication key to a simple password.  After setting @var{AUTH_KEY},
+all OSPF packets are authenticated. @var{AUTH_KEY} has length up to 8 chars.
+@end deffn
+
+@deffn {Interface Command} {ip ospf message-digest-key KEYID md5 KEY} {}
+@deffnx {Interface Command} {no ip ospf message-digest-key} {}
+Set OSPF authentication key to a cryptographic password.  The cryptographic
+algorithm is MD5.  KEYID identifies secret key used to create the message
+digest.  KEY is the actual message digest key up to 16 chars.
+@end deffn
+
+@deffn {Interface Command} {ip ospf cost <1-65535>} {}
+@deffnx {Interface Command} {no ip ospf cost} {}
+Set link cost for the specified interface.  The cost value is set to router-LSA's
+metric field and used for SPF calculation.
+@end deffn
+
+@deffn {Interface Command} {ip ospf dead-interval <1-65535>} {}
+@deffnx {Interface Command} {no ip ospf dead-interval} {}
+Set number of seconds for RouterDeadInterval timer value used for Wait Timer
+and Inactivity Timer.  This value must be the same for all routers attached
+to a common network.  The default value is 40 seconds.
+@end deffn
+
+@deffn {Interface Command} {ip ospf hello-interval <1-65535>} {}
+@deffnx {Interface Command} {no ip ospf hello-interval} {}
+Set number of seconds for HelloInterval timer value.  Setting this value,
+Hello packet will be sent every timer value seconds on the specified interface.
+This value must be the same for all routers attached to a common network.
+The default value is 10 seconds.
+@end deffn
+
+@deffn {Interface Command} {ip ospf network (broadcast|non-broadcast|point-to-multipoint|point-to-point)} {}
+@deffnx {Interface Command} {no ip ospf network} {}
+Set explicitly network type for specifed interface.
+@end deffn
+
+@deffn {Interface Command} {ip ospf priority <0-255>} {}
+@deffnx {Interface Command} {no ip ospf priority} {}
+Set RouterPriority integer value.  Setting higher value, router will be more
+eligible to become Designated Router.  Setting the value to 0, router is no
+longer eligible to Designated Router.
+The default value is 1.
+@end deffn
+
+@deffn {Interface Command} {ip ospf retransmit-interval <1-65535>} {}
+@deffnx {Interface Command} {no ip ospf retransmit interval} {}
+Set number of seconds for RxmtInterval timer value.  This value is used
+when retransmitting Database Description and Link State Request packets.
+The default value is 5 seconds.
+@end deffn
+
+@deffn {Interface Command} {ip ospf transmit-delay} {}
+@deffnx {Interface Command} {no ip ospf transmit-delay} {}
+Set number of seconds for InfTransDelay value.  LSAs' age should be 
+incremented by this value when transmitting.
+The default value is 1 seconds.
+@end deffn
+
+@node Redistribute routes to OSPF, Showing OSPF information, OSPF interface, OSPFv2
+@comment  node-name,  next,  previous,  up
+@section Redistribute routes to OSPF
+
+@deffn {OSPF Command} {redistribute (kernel|connected|static|rip|bgp)} {}
+@deffnx {OSPF Command} {redistribute (kernel|connected|static|rip|bgp) @var{route-map}} {}
+@deffnx {OSPF Command} {redistribute (kernel|connected|static|rip|bgp) metric-type (1|2)} {}
+@deffnx {OSPF Command} {redistribute (kernel|connected|static|rip|bgp) metric-type (1|2) route-map @var{word}} {}
+@deffnx {OSPF Command} {redistribute (kernel|connected|static|rip|bgp) metric <0-16777214>} {}
+@deffnx {OSPF Command} {redistribute (kernel|connected|static|rip|bgp) metric <0-16777214> route-map @var{word}} {}
+@deffnx {OSPF Command} {redistribute (kernel|connected|static|rip|bgp) metric-type (1|2) metric <0-16777214>} {}
+@deffnx {OSPF Command} {redistribute (kernel|connected|static|rip|bgp) metric-type (1|2) metric <0-16777214> route-map @var{word}} {}
+@deffnx {OSPF Command} {no redistribute (kernel|connected|static|rip|bgp)} {}
+@end deffn
+
+@deffn {OSPF Command} {default-information originate} {}
+@deffnx {OSPF Command} {default-information originate metric <0-16777214>} {}
+@deffnx {OSPF Command} {default-information originate metric <0-16777214> metric-type (1|2)} {}
+@deffnx {OSPF Command} {default-information originate metric <0-16777214> metric-type (1|2) route-map @var{word}} {}
+@deffnx {OSPF Command} {default-information originate always} {}
+@deffnx {OSPF Command} {default-information originate always metric <0-16777214>} {}
+@deffnx {OSPF Command} {default-information originate always metric <0-16777214> metric-type (1|2)} {}
+@deffnx {OSPF Command} {default-information originate always metric <0-16777214> metric-type (1|2) route-map @var{word}} {}
+@deffnx {OSPF Command} {no default-information originate} {}
+@end deffn
+
+@deffn {OSPF Command} {distribute-list NAME out (kernel|connected|static|rip|ospf} {}
+@deffnx {OSPF Command} {no distribute-list NAME out (kernel|connected|static|rip|ospf} {}
+@end deffn
+
+@deffn {OSPF Command} {default-metric <0-16777214>} {}
+@deffnx {OSPF Command} {no default-metric} {}
+@end deffn
+
+@deffn {OSPF Command} {distance <1-255>} {}
+@deffnx {OSPF Command} {no distance <1-255>} {}
+@end deffn
+
+@deffn {OSPF Command} {distance ospf (intra-area|inter-area|external) <1-255>} {}
+@deffnx {OSPF Command} {no distance ospf} {}
+@end deffn
+
+@deffn {Command} {router zebra} {}
+@deffnx {Command} {no router zebra} {}
+@end deffn
+
+@node Showing OSPF information, Debugging OSPF, Redistribute routes to OSPF, OSPFv2
+@comment  node-name,  next,  previous,  up
+@section Showing OSPF information
+
+@deffn {Command} {show ip ospf} {}
+@end deffn
+
+@deffn {Command} {show ip ospf interface [INTERFACE]} {}
+@end deffn
+
+@deffn {Command} {show ip ospf neighbor} {}
+@deffnx {Command} {show ip ospf neighbor INTERFACE} {}
+@deffnx {Command} {show ip ospf neighbor detail} {}
+@deffnx {Command} {show ip ospf neighbor INTERFACE detail} {}
+@end deffn
+
+@deffn {Command} {show ip ospf database} {}
+@end deffn
+
+@deffn {Command} {show ip ospf database (asbr-summary|external|network|router|summary)} {}
+@deffnx {Command} {show ip ospf database (asbr-summary|external|network|router|summary) @var{link-state-id}} {}
+@deffnx {Command} {show ip ospf database (asbr-summary|external|network|router|summary) @var{link-state-id} adv-router @var{adv-router}} {}
+@deffnx {Command} {show ip ospf database (asbr-summary|external|network|router|summary) adv-router @var{adv-router}} {}
+@deffnx {Command} {show ip ospf database (asbr-summary|external|network|router|summary) @var{link-state-id} self-originate} {}
+@deffnx {Command} {show ip ospf database (asbr-summary|external|network|router|summary) self-originate} {}
+@end deffn
+
+@deffn {Command} {show ip ospf database max-age} {}
+@end deffn
+
+@deffn {Command} {show ip ospf database self-originate} {}
+@end deffn
+
+@deffn {Command} {show ip ospf refresher} {}
+@end deffn
+
+@deffn {Command} {show ip ospf route} {}
+@end deffn
+
+@node Debugging OSPF,  , Showing OSPF information, OSPFv2
+@comment  node-name,  next,  previous,  up
+@section Debugging OSPF
+
+@deffn {Command} {debug ospf packet (hello|dd|ls-request|ls-update|ls-ack|all) (send|recv) [detail]} {}
+@deffnx {Command} {no debug ospf packet (hello|dd|ls-request|ls-update|ls-ack|all) (send|recv) [detail]} {}
+@end deffn
+
+@deffn {Command} {debug ospf ism} {}
+@deffnx {Command} {debug ospf ism (status|events|timers)} {}
+@deffnx {Command} {no debug ospf ism} {}
+@deffnx {Command} {no debug ospf ism (status|events|timers)} {}
+@end deffn
+
+@deffn {Command} {debug ospf nsm} {}
+@deffnx {Command} {debug ospf nsm (status|events|timers)} {}
+@deffnx {Command} {no debug ospf nsm} {}
+@deffnx {Command} {no debug ospf nsm (status|events|timers)} {}
+@end deffn
+
+@deffn {Command} {debug ospf lsa} {}
+@deffnx {Command} {debug ospf lsa (generate|flooding|refresh)} {}
+@deffnx {Command} {no debug ospf lsa} {}
+@deffnx {Command} {no debug ospf lsa (generate|flooding|refresh)} {}
+@end deffn
+
+@deffn {Command} {debug ospf zebra} {}
+@deffnx {Command} {debug ospf zebra (interface|redistribute)} {}
+@deffnx {Command} {no debug ospf zebra} {}
+@deffnx {Command} {no debug ospf zebra (interface|redistribute)} {}
+@end deffn
+
+@deffn {Command} {show debugging ospf} {}
+@end deffn
+