actual test ccna security

actual test ccna security

Next Hop 0 kbits/sec Network 55.55.55.55 area 0 Interface ! Once the router receives the IIH , it checks the adjacency of the sender of the hello packet. If the adjacency has been established, the adjacency is reset. IS-IS packets carry all easily expandable information using TLV fields 3.3.3.3/32 ISIS default flooding period is 15 minutes by lsp-refresh-interval Review Password: not required, none, in use 203 LSP midpoint frr information: LSP identifier PATH RFC1195 A value of 0 indicates that the maximum number of three area addresses is supported . By default, the value is 0 , and the actual value is in the range of 1-254 . Contains information such as the tunnel destination address, tunnel ID ,actual test ccna security, and extended tunnel ID (that is, the tunnel start point) Ip address 10.1.12.2 255.255.255.0 Current LSP: The work of RSVP continues to work based on the sequence of this IP address. ! Network 4.4.4.4 0.0.0.0 area 0 The unit is Bytes , multiplied by 8 is 100Mbps 10.1.12.2 ! If the headend wants to remove the tunnel , send PATHtear along the tunnel path , and the received node responds to RESVtear , so the tunnel between the two points Activate the MPLS TE extension for each router's OSPF and manually set the RouterID for MPLS TE . Can form adjacencies with other L2 (or L1/L2 ) routers Explicit Route: 10.1.12.2 10.1.23.2 10.1.23.3 10.1.34.3 The maximum bandwidth is the total bandwidth of the link. In CISCO IOS , this value matches the physical link or the configured bandwidth value. Related RFCs * 0x0000000C Ip router isis *Aug 18 04:37:06.239: Error Value: 0x5 (No route available toward destination) 10.1.12.2 Select the path with the lowest IGP cost 0x2D6E R1#traceroute 55.55.55.55 The LSA is encapsulated into the LSU to advertise to the neighbor We open interface authentication between R1 and R2 : IS-IS adjacency on a point-to-point link Mpls traffic-eng tunnels mpls label range 400 499 [115/10] via 10.1.123.2, FastEthernet0/0 Then configure it on R1 : IGP floods TE information when: An IS-IS router can be configured to summarize IP routes into Level 1, Level 2, or both, at the same time, Complete MPLS TE configuration on R1 . MPLS TE can change the bandwidth and attribute parameters of the link through adaptation. IS-IS supports ISO connectionless network environment, pay attention to the data link is Interface tunnel0 ---------- 0 Or Tunnel Id Administrator-weight , and only the IGP metric is used to calculate the shortest path of the tunnel . All ISs and ESs in a routing area must have the same length of system ID IS-IS Level-2 Link State Database: The area address groups configured on the router are listed. Or Tunnel Id The configuration of R3 is as follows: STYLE AutoRoute: enabled auto-bw: disabled *Aug 18 04:37:06.239: ERROR_SPEC type 1 length 12: Mpls ip interface fa1/0 This command will cause the penultimate hop router to still carry the label when sending data to the end. This label is an empty label. Mpls traffic-eng tunnels ip rsvp bandwidth [115/10] via 10.1.123.2, FastEthernet0/0 value Interface priority (default 64 ), attention and OSPF difference is that priority 0 of IS are also involved in DIS election Its ingress and exgress LSRs Bandwidth: 0 Establish a target neighbor However, in some environments, this problem with LDP sessions may never be resolved, so it may not be desirable to wait for the establishment of an IGP adjacency forever . Then you can configure the "synchronization hold time". L1/L2 router re-releases external routes into IS-IS ( to level2 ) Used to publish link state information is somewhat similar to OSPF of LSA stuff 0x2D6E Local binding: tag: imp-null A very important problem in MPLS networks is the synchronization of LDP and IGP . The so-called synchronization means that both IGP and LDP recognize that a link is the outbound link of the message to be forwarded . For example, in the above figure, all four routers run OSPF and activate LDP . Then on R1 , if it goes to the route 3.3.3.3/32 , the next hop in the routing table is R2 (assuming we adjust the cost ), and at the same time we receive the bundle of 3.3.3.3/32 prefix sent by R2 . The label 401 , then IGP and LDP are synchronized at this time, and R1 can normally use R2 as the next hop to forward MPLS label messages.