OSPF Cisco IOS - Revision history

Heth: /* area range v.s. summary address */

2023-11-02T13:22:08Z

‎area range v.s. summary address

2023-11-02T13:18:18Z

‎area range v.s. summary address

2023-11-02T13:17:10Z

‎Notes

2020-11-25T13:18:51Z

2020-11-25T12:05:53Z

2020-11-25T12:04:47Z

‎NSSA: Not So Stubby Area

2019-05-24T07:29:15Z

‎LSA Types

2013-12-18T13:46:41Z

‎NSSA: Not So Stubby Areas

2013-12-16T14:22:47Z

‎References

2013-12-16T14:22:34Z

‎Links

@@ Line 266: / Line 266: @@
 [[Category:Cisco]][[Category:CCNA]][[Category:CCNP]][[Category:IOS]][[Category:Network]][[Category:CCNP1]]
-= area range v.s. summary address=
+= summary address vs area range =
 Basically the difference can easily be summarized :)

@@ Line 272: / Line 272: @@
 Between different Areas of the OSPF (Summarizing the INTRA-AREA routes):
-ABR: area [source-area] range [address] [mask]
+ABR:
+<source lang=bash>
 Redistribution from the other routing protocol (Summarizing the EXTERNAL routes):
-ASBR: summary-address [address] [mask]
+ASBR:
+<source lang=bash>
 = Notes =

@@ Line 265: / Line 265: @@
 The opaque LSAs, types 9, 10, and 11, are designated for future upgrades to OSPF for application-specific purposes. For example, Cisco Systems uses opaque LSAs for Multiprotocol Label Switching (MPLS) with OSPF. Opaque LSAs are distributed using standard LSDB flooding mechanisms. Each type has a different flooding scope.
 [[Category:Cisco]][[Category:CCNA]][[Category:CCNP]][[Category:IOS]][[Category:Network]][[Category:CCNP1]]
 = Notes =

@@ Line 42: / Line 42: @@
 ==== NSSA: Not So Stubby Area ====
 * A NSSA imports a limited number of External Routes. The number of Routes is limited to those Routes required to provide connectivity between Areas. LSA type 7 exist in a NSSA. External Routes fx. redistributed. EIGRP routes into a NSSA in a ASBR is propegated through the NSSA network to the ABR which converts the type 7 LSA to a LSA type 5 into area 0.
+== Stub Examples==
 [[image:Ospfstub1.png|thumb|500px|none|Example]]
 [[image:Ospfstub2.png|thumb|500px|none|Example]]

@@ Line 41: / Line 41: @@
 ** Has a default route out of the Area,
 ==== NSSA: Not So Stubby Area ====
 * A NSSA imports a limited number of External Routes. The number of Routes is limited to those Routes required to provide connectivity between Areas. LSA type 7 exist in a NSSA. External Routes fx. redistributed. EIGRP routes into a NSSA in a ASBR is propegated through the NSSA network to the ABR which converts the type 7 LSA to a LSA type 5 into area 0.
 [[image:Ospfstub1.png|thumb|500px|none|Example]]
 [[image:Ospfstub2.png|thumb|500px|none|Example]]
@@ Line 56: / Line 57: @@
 If you want to redistribute a default route into the OSPF Domain through a NSSA Area you need to use the '''area 1 nssa default-information-originate''' on the ASBR<ref>http://wiki.nil.com/External_default_route_in_NSSA_area</ref><br/><br/>
 NSSA behaves strange when redistributing 2 default gateways from 2 different NSSA's. See the this [[/NSSA|example]].
+=Stub area examples=
 == Virtual links ==
 [[image:Ospfvl1.png|thumb|500px|none|Example]]

@@ Line 209: / Line 209: @@
 |3 ||	O IA || || Summary Link: Sendes fra Area til Area gennem ABR. Indeholder IA Summaries.
 |-
-|4 ||	O IA || || ASBR summary Link: Sendes fra ASBR’s. Indeholder externe router.
+|4 ||	O IA || || ABR summary Link: Sendes til ASBR fra ABR. Indeholder externe router.
 |-
 |5 ||	O E1/2 || || Externe Router fra ASBR. E1 intern + extern cost. E2 kun extern cost.

@@ Line 269: / Line 269: @@
 *[http://supportwiki.cisco.com/ViewWiki/index.php/What_Are_OSPF_Areas_and_Virtual_Links%3F Cisco Wiki: What are OSPF areas and virtual links]
 = References =
-</references>
+<references/>

← Older revision		Revision as of 14:22, 16 December 2013
Line 268:		Line 268:
	= Links =		= Links =
	*[http://supportwiki.cisco.com/ViewWiki/index.php/What_Are_OSPF_Areas_and_Virtual_Links%3F Cisco Wiki: What are OSPF areas and virtual links]		*[http://supportwiki.cisco.com/ViewWiki/index.php/What_Are_OSPF_Areas_and_Virtual_Links%3F Cisco Wiki: What are OSPF areas and virtual links]
		+	= References =
		+	</references>