The documentation update.
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1 changed files with 55 additions and 3 deletions
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@ -1602,11 +1602,22 @@ protocol ospf <name> {
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tick <num>;
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tick <num>;
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ecmp <switch> [limit <num>];
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ecmp <switch> [limit <num>];
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area <id> {
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area <id> {
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stub <switch>;
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nssa <switch>;
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summary <switch>;
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stub cost <num>;
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stub cost <num>;
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translator <switch>;
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translator stability <num>;
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networks {
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networks {
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<prefix>;
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<prefix>;
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<prefix> hidden;
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<prefix> hidden;
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}
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}
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external {
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<prefix>;
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<prefix> hidden;
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<prefix> tag <num>;
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}
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stubnet <prefix>;
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stubnet <prefix>;
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stubnet <prefix> {
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stubnet <prefix> {
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hidden <switch>;
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hidden <switch>;
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@ -1683,15 +1694,56 @@ protocol ospf <name> {
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address, similarly to a router ID). The most important area is
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address, similarly to a router ID). The most important area is
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the backbone (ID 0) to which every other area must be connected.
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the backbone (ID 0) to which every other area must be connected.
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<tag>stub <M>switch</M></tag>
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This option configures the area to be a stub area. External
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routes are not flooded into stub areas. Also summary LSAs can be
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limited in stub areas (see option <cf/summary/). Default
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value is no. (Area is not stub.)
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<tag>nssa <M>switch</M></tag>
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This option configures the area to be a NSSA (Not-So-Stubby
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Area). NSSA is a variant of a stub area which allows a
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limited way of external route propagation. Global external
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routes are not propagated into a NSSA, but an external route
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can be imported into NSSA as a (area-wide) NSSA-LSA (and
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possibly translated and/or aggregated on area boundary).
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Default value is no. (Area is not NSSA.)
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<tag>summary <M>switch</M></tag>
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This option controls propagation of summary LSAs into stub or
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NSSA areas. If enabled, summary LSAs are propagated as usual,
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otherwise just the default summary route (0.0.0.0/0) is
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propagated (this is sometimes called totally stubby area). If
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a stub area has more area boundary routers, propagating
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summary LSAs could lead to more efficient routing at the cost
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of larger link state database. Default value is no.
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<tag>stub cost <M>num</M></tag>
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<tag>stub cost <M>num</M></tag>
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No external (except default) routes are flooded into stub areas.
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This option controls the cost of a default route propagated to
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Setting this value marks area stub with defined cost of default route.
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stub and NSSA areas. Default value is 1000.
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Default value is no. (Area is not stub.)
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<tag>translator <M>switch</M></tag>
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This option controls translation of NSSA-LSAs into external
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LSAs. By default, one translator per NSSA is automatically
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elected from area boundary routers. If enabled, this area
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boundary router would unconditionally translate all NSSA-LSAs
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regardless of translator election. Default value is no.
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<tag>translator stability <M>num</M></tag>
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This option controls the translator stability interval (in
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seconds). When the new translator is elected, the old one
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keeps translating until the interval is over. Default value
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is 40.
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<tag>networks { <m/set/ }</tag>
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<tag>networks { <m/set/ }</tag>
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Definition of area IP ranges. This is used in summary LSA origination.
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Definition of area IP ranges. This is used in summary LSA origination.
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Hidden networks are not propagated into other areas.
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Hidden networks are not propagated into other areas.
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<tag>external { <m/set/ }</tag>
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Definition of external area IP ranges for NSSAs. This is used
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for NSSA-LSA translation. Hidden networks are not translated
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into external LSAs. Networks can have configured route tag.
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<tag>stubnet <m/prefix/ { <m/options/ }</tag>
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<tag>stubnet <m/prefix/ { <m/options/ }</tag>
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Stub networks are networks that are not transit networks
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Stub networks are networks that are not transit networks
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between OSPF routers. They are also propagated through an
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between OSPF routers. They are also propagated through an
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