ccna ccnp course

ccna ccnp course

Broadcast multi-access link Router bgp 2345 10.1.23.2 Admin: up Oper: up Path: valid Signalling: connected Mpls traffic-eng tunnels mpls label range 400 499 Router-id 5.5.5.5 O 0x4F65 After saving the configuration restart R2 , the R2 after the restart is completed, ISIS lead convergence, but this time bgp Write convergence completion, so R2 resulting LSP in overload set, from R1 the following results can be seen,ccna ccnp course, during this time, R1 is not R2 will be used as the next hop to other networks ( except for the network directly connected to R2 ): Based on the platform ( Per-Platform ) label space label space ID = 0 ! Phenomenon analysis The maximum number of regional addresses configured by a single router must be the same as that of neighboring neighbors. By default, CISCO IOS routers support the maximum number. 55.55.55.55 [110/31] via 10.1.23.3, 00:03:44, Ethernet0/1 Sender_Template Ip cef 10.1.34.4 10.1.45.4 10.1.45.5 5.5.5.5 IS-IS basic module Expense metric is optional. The transmission cost of the link is not supported. By default, the IS-IS area is the stub area, which is the latest release. *Aug 18 09:06:07.919: For the first layer LSP database, you use the first 1 layer CSNP and PSNPs , for the first 2 used in the first layer 2 layer CSNP The forwarding adjacency feature will cause the TE router to advertise the TE tunnel as a virtual path (direct link) in the IGP routing protocol area, so that all routers know the existence of the tunnel. The IGP protocol here can be OSPF or IS-IS. Area Address(es): 49.0001 SNPA: cc02.1ab0.0000 Reservable supporting agreement *Aug 18 09:06:07.919: Setup Prio: 7, Holding Prio: 7 Ethernet0/1, Src IP addr: 10.1.23.3 Addresses bound to peer LDP Ident: The final R1 on the show isis database Take a look at the routing table for R1 : SystemID : The systemID of the IS that generated the hello (some books have a SourceID , synonymous) *Aug 18 04:37:06.243: version = 0 length in words = 7 Label location Admin. Weight: 1 Ip router isis router isis Extension of IS-IS metrics In R1, this L1 router attempts to perform route summarization. The result is a failure. This is similar to OSPF . Routers in the area cannot be routed. Because we want to flood the LSP , the routers in the area must know the area. For details of the topology, if the L1 router is allowed to perform route summarization, does it lose the nature of the link state routing protocol? Regular area (non-backbone area) ! R2 redistributed direct route 2.2.2.0 is gone, inter-area route is still, and R1 no longer uses R2 as the next hop of the default route. Note that the LSP sent by R2 is also overload-bit set. . The configuration of R3 is as follows: Link ID Explicit Route: 10.1.12.2 10.1.24.2 10.1.24.4 10.1.45.4 Intermediate system adjacent router Ip cef 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnets Network 10.1.34.4 0.0.0.0 area 0 Network 10.1.23.2 0.0.0.0 area 0 Interface tunnel0 SystemID Length : Identifies the length of the system ID . A value of 0 indicates a length of 6B , a value of 255 indicates a length of 0 , and other system ID fields may have a length of 1-8 bytes. 0.1.123.2 tunnel interface can be configured directly IGP Metric , for example, if the running OSPF , directly in the tunnel configuration mouth ip ospf cost can Is-type level-1 metric-style wide Interface Tunnel0 0xCC Interface Loopback0 Through the above command, you can view the actual forwarding outbound interface and the next hop of the packet whose source is 10.1.35.5 and whose destination is 1.1.1.1 on R3 . We can see that the traffic of this source address is actually used. One hop is 10.1.34.4 , and the outgoing interface is F1/0 port. That is to say, as long as it is from 10.1.35.5 , the traffic to 1.1.1.1 is constant, and the Fa1/0 port is constantly taken out.