We are using the neighbor default-originate command to advertise the default route into the BGP AS. We have two gateways into the service providers network and the default gateway needs to be advertised out of each, but one needs to be the primary.
Figure 7-21Network diagram of configuring BGP to advertise the default route In this example, interface1, interface2, and interface3 represent VLANIF100, VLANIF200, and VLANIF300, respectively. To complete the configuration, you need the following data: ...
Configuring Fast BGP Peer Reset Configuring a BGP Peer to Track the Physical Status of a Specified Physical Interface Configuring BGP Route Dampening Configuring a Dynamic BGP Peer Group Configuring Suppression on BGP Peer Flapping Configuring BGP Recursion Suppression in Case of Next Hop Flapping Conf...
To configure a router running BGP to advertise a default route to a specific neighbor, issue the neighbor {ip-address, peer-group-name} default-originate [route-map map-name] command in router configuration mode. For example, if a router in Autonomous Systems (AS)...
This method describes how to advertise default route in EIGRP with the use of static default route: R3(config)#ip route 0.0.0.0 0.0.0.0 192.168.34.4 R3#show ip routeCodes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP exte...
R2#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 ...
Redistributed default route配置 R1# router eigrp 100 redistribute static network 10.1.1.1 0.0.0.0 no auto-summary 验证 #R2#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area ...
default-route-advertise always //配置将缺省路由发布到OSPF区域 area 0.0.0.0 network 10.1.2.0 0.0.0.255 //使能防火墙与路由器相连的接口所在网段的OSPF协议 # 4、检查配置结果 执行display ospf[process-id]routing router-id[router-id] [age{min-valuemin-age-value|max-valuemax-age-value} * ] 命令查...
BGP协议用peer default-route-advertise命令来给邻居发布路由,与此同时,关于本BGP路由表的变化描述,正确的是A.在本地BGP路由表中生成一条缺省路由,根据路由选择结果下发给IP路由表B.无影响,不在本地BGP路由表中生成缺省路由C.在本地BGP路由表中生成条活跃的缺省路由,并下发
As simple as that, default route exists in R2 and R3 as well. R2#sh ip route Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA...