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authorRenato Westphal <renato@opensourcerouting.org>2021-10-06 02:25:55 +0200
committerRenato Westphal <renato@opensourcerouting.org>2021-10-06 02:25:55 +0200
commit3c77bc809fac8e3a564a6c2ecb380e3917085dcc (patch)
tree53140c664cdb9cc74ac8c88eb990609d5867d8f6 /doc/user/ospf6d.rst
parentospf6d: fix lookup of translated Type-5 LSA (diff)
downloadfrr-3c77bc809fac8e3a564a6c2ecb380e3917085dcc.tar.xz
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ospf6d: add support for NSSA Type-7 address ranges
Implement NSSA address ranges as specified by RFC 3101: NSSA border routers may be configured with Type-7 address ranges. Each Type-7 address range is defined as an [address,mask] pair. Many separate Type-7 networks may fall into a single Type-7 address range, just as a subnetted network is composed of many separate subnets. NSSA border routers may aggregate Type-7 routes by advertising a single Type-5 LSA for each Type-7 address range. The Type-5 LSA resulting from a Type-7 address range match will be distributed to all Type-5 capable areas. Syntax: area A.B.C.D nssa range X:X::X:X/M [<not-advertise|cost (0-16777215)>] Example: router ospf6 ospf6 router-id 1.1.1.1 area 1 nssa area 1 nssa range 2001:db8:1000::/64 area 1 nssa range 2001:db8:2000::/64 ! Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
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diff --git a/doc/user/ospf6d.rst b/doc/user/ospf6d.rst
index d823c5d5b..4e2322359 100644
--- a/doc/user/ospf6d.rst
+++ b/doc/user/ospf6d.rst
@@ -204,6 +204,21 @@ OSPF6 area
existence of a default route in the RIB that wasn't learned via the OSPF
protocol.
+.. clicmd:: area A.B.C.D nssa range X:X::X:X/M [<not-advertise|cost (0-16777215)>]
+
+.. clicmd:: area (0-4294967295) nssa range X:X::X:X/M [<not-advertise|cost (0-16777215)>]
+
+ Summarize a group of external subnets into a single Type-7 LSA, which is
+ then translated to a Type-5 LSA and avertised to the backbone.
+ This command can only be used at the area boundary (NSSA ABR router).
+
+ By default, the metric of the summary route is calculated as the highest
+ metric among the summarized routes. The `cost` option, however, can be used
+ to set an explicit metric.
+
+ The `not-advertise` option, when present, prevents the summary route from
+ being advertised, effectively filtering the summarized routes.
+
.. clicmd:: area A.B.C.D export-list NAME
.. clicmd:: area (0-4294967295) export-list NAME