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. WIKIMERIONET
Merion Mertics , ,

CRM

6

OSPF (Open Shortest Path First) ( , ) LSA (Link State Advertisement). LSA , Link-State DataBase (LSDB). , OSPF Shortest Path First, .

LSA Link State Update (LSU) . LSU LSA, LSU OSPF, LSA . LSA OSPF.

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LSA

LSA

OSPF 11 LSA, , LSA, OSPF, .


LSA 1 OSPF Router LSA

LSA Type 1 (Router LSA) (area) . OSPF LSA Type 1 , .

LSA Type 1
LSA 2 OSPF Network LSA

LSA Type 2 (Network LSA) Designated Router (DR) , . LSA Type 2 .

LSA Type 2
LSA 3 OSPF Summary LSA

LSA Type 3 (Summary LSA) Area Border Routers (ABR) , ABR. LSA Type 3 .

LSA Type 3

R2 ABR Type 3 Summary LSA Area 0. R3 ABR Type 3 Area 2. , , O IA


LSA 4 OSPF ASBR Summary LSA

LSA Type 4 (ASBR Summary LSA) - LSA, Autonomous System Border Router (ASBR) .

LSA Type 4

, R2 (ABR) LSA Type 1 R1, LSA Type 4 (Summary ASBR LSA), ASBR, Area 1, Area 0. LSA Type 4 ABR ASBR , ASBR (Area 1); ASBR LSA Type 1 ( R2) .


LSA 5 OSPF ASBR External LSA

LSA Type 5 (ASBR External LSA) ASBR (AS) OSPF. LSA Type 5 (default router), .

LSA Type 5

/ OSPF- ASBR (R1) "O E1" "O E2".


LSA 6 OSPF Group Membership LSA

LSA Type 6 (Group Membership LSA) Multicast OSPF (MOSPF) , OSPF. MOSPF Cisco .


LSA 7 OSPF Not So Stubby Area (NSSA) External LSA

LSA Type 7 (NSSA External LSA) , LSA Type 5. LSA Type 7 LSA Type 5 , ABR, LSA Type 7 LSA Type 5.

LSA Type 7

ABR R2 LSA Type 7 LSA Type 5 OSPF.


LSA 8 OSPF External Attributes LSA (OSPFv2) / Link Local LSA (OSPFv3)

LSA Type 8 OSPFv2 (IPv4) LSA BGP OSPF, BGP LSA Type 5 , , . OSPFv3 (IPv6) , LSA Type 8 IPv6 OSPF.


LSA 9, 10 11

LSA OSPF. LSA Traffic Engineering MPLS, , , ..


LSA 9 OSPF Link Scope Opaque (OSPFv2) / Intra Area Prefix LSA (OSPFv3)

LSA Type 9 OSPFv2 (IPv4) Link Scope Opaque LSA OSPF . OSPFv3 , Stub Area.


LSA 10 OSPF Area Scope Opaque LSA

LSA Type 10 OSPF . , OSPF, LSA Traffic Engineering MPLS .


LSA 11 OSPF AS Scope Opaque LSA

LSA Type 11 , LSA Type 10, (Stub )