Type5-External LSA Type4-ASBR Summary Type7-NSSA External Summary 特殊区域 Stubby area Totally Stubby area Not So Stubby area(NSSA) Totally NSSA 路径选择 OSPF路由类型 实验模拟 总结 路由汇总 定义 域间路由汇总 实验模拟(域间) 外部路由汇总 实验模拟(外部) 原理 三张表 这三张表对应建立路由的三大...
ASBR Externel LSA (Type 5) Group Summary (Type 6) NSSA External LSA (Type 7) External Attributes LSA (Type 8) Opaque LSAs (Type 9, 10, 11) Now, let’s talk about these OSPF LSA types detailly. Here, it is better to explain these LSA types with different area types and their LSA...
1,OSPF缺省路由通常应用于下面两种情况:由区域边界路由器(ABR)发布Type3 LSA,用来指导区域内路由器进行区域之间报文的转发。由自治系统边界路由器(ASBR)发布Type5 LSA或Type7 LSA,用来指导OSPF路由域内路由器进行域外报文的转发。 2,default-route-advertise ?的相关命令 [Huawei-ospf-1]default-route-advertise ?
LSATypes LSAType123or456DescriptionRouterLSAsNetworkLSAsSummaryLSAsAutonomoussystemexternalLSAsMulticastOSPFLSA 7 89,10,11 Definedfornot-so-stubbyareas ExternalattributesLSAforBorderGatewayProtocol(BGP)OpaqueLSAs LSAType1:RouterLSA •OnerouterLSA(type1)foreveryrouterinanarea–Includeslistofdirectlyattachedlinks...
OSPF LSA Types OSPF Fast Convergence OSPF Virtual Link OSPF Route Summarization and Filtering OSPF Multi-Process OSPF RFC 1583 Compatibility OSPF Characteristics In an OSPF network, each router generates a link-state advertisement (LSA) based on its surrounding network topology and transmits this LSA...
三、OSPF 是典型的链路状态路由协议,使用 LSA( Link State Advertisement ,链路状态通告)来装载和传输链路状态信息。 LSA 需要描述邻接路由器信息、直连链路信息、跨区域信息等,所以定义了多种类型的 LSA 。 一类名词表示的RouterID;二类名字表示DR接口的IP地址;三类名字表示的是一个网段;四类名字是一个ASBR路由器的...
OSPF LSA Types An OSPF network is partitioned into multiple areas. These areas need to maintain their own LSDBs, and routers in these areas are classified into different types. LSAs encapsulated with route description can also be classified based on the router types. Figure 5-23 shows an OSPF...
Demystifying OSPFv3 LSA Types Basic configuration of all routers: R1: ipv6 unicast-routing ! interface FastEthernet0/0 ipv6 address 2012:12::1/64 ipv6 enable ospfv3 1 ipv6 area 0 no shut ! router ospfv3 1 ! address-family ipv6 unicast router-id
This means in all area types Intra-area LSAs (Type-1 and Type-2) are flooded. You will see a Type-2 LSA for every broadcast segment contained in the area and a Type-1 LSA for all of the router links within that area, one from each router. In case of E1/E2 and N1/N2, the di...
Acknowledges the receipt of an LSA. LSA Types Table 1-2LSA types LSA Type Function Router-LSA (Type 1) Describes the link status and link cost of a router. It is generated by every router and advertised in the area to which the router belongs. ...