ccna practice exam pdf

ccna practice exam pdf

After the basic configuration is completed, since R2 and R3 are L1\L2 routers , for both of them, they will advertise themselves to the local level1 area as a way to go out , by setting ATT in the LSP generated by themselves . we R1 point of view isis database has been able to see out. R1#show isis database Current LSP: Contains information such as the tunnel sender address, LSP ID, etc. 0 kbits/sec 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. LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL The third layer destination IP matches the packet with the same specific prefix. R1#show ip ospf database opaque-area self-originate Mpls traffic-eng tunnels mpls label range 300 399 Tunnel mpls traffic-eng autoroute announce 0/0/0 Fa0/0 Mpls traffic-eng tunnels ip rsvp bandwidth Src 1.1.1.1,ccna practice exam pdf, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 26 4 10.1.45.5 8 msec 8 msec * By default, CISCO IOS does not trigger re-optimization when a link in the network can be reused by a TE tunnel , but can activate this operation. To enable re-optimization when a link becomes operational in MPLS TE , use the following command: The configuration of R1 is as follows: 10.1.12.2 8 msec 4 msec 0 msec Physical_bw: 100000 (kbps), max_reservable_bw_global: 75000 (kbps) There are two ways to set the path of the TE tunnel ( Explicit explicit or Dynamic dynamic) Attributes are explicitly assigned to the TE tunnel through administration action. Mpls ldp router-id Loopback0 As a result, the size of the LSPDB is greatly reduced. Note that the above picture is just an abstraction and simulation concept. The ABCD four routers actually have ISIS adjacencies (in IS-IS broadcast). In the network, adjacencies are formed between routers of the same level on the same network segment, including all non- DIS routers. This is different from OSPF . However , after DIS , everyone The resulting LSP volume is reduced. That is to say, although all routers on the IS-IS broadcast network form an adjacency relationship, the synchronization of the LSDB is still guaranteed by the DIS . The LSP stability and reliability has been guaranteed. The operation of the SPF algorithm is naturally faster.