ospfd.texi

大名鼎鼎的路由器源码。程序分ZEBRA、OSPFRIP等3个包。程序框架采用一个路由协议一个进程的方式

@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
More information regarding the behaviour controlled by this command can
be found in draft-ietf-ospf-abr-alt-05.txt. 
Quote: "Though the definition of the Area Border Router (ABR)
in the OSPF specification does not require a router with multiple
attached areas to have a backbone connection, it is actually
necessary to provide successful routing to the inter-area and
external destinations. If this requirement is not met, all traffic
destined for the areas not connected to such an ABR or out of the
OSPF domain, is dropped.  This document describes alternative ABR
behaviors implemented in Cisco and IBM routers."
@end deffn

@deffn {OSPF Command} {ospf rfc1583compatibility} {}
@deffnx {OSPF Command} {no ospf rfc1583compatibility} {}
This rfc2328, the sucessor to rfc1583, suggests according to section
G.2 (changes) in section 16.4 a change to the path preference
algorithm that prevents possible routing loops that were possible in
the old version of OSPFv2. More specificly it demands that inter-area
paths and intra-area path are now of equal preference but still both
preferred to external paths.
@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} {}