ccna exam format

ccna exam format

*Aug 18 09:06:07.919: average rate=250000 bytes/sec, burst depth=1000 bytes 0 kbits/sec // The label advertised locally is meaningful to the local ( interface ) or globally Needless to say this? DIS advertises all neighbors in the LAN in the "pseudo-node LSP " (similar to the LSA in OSPF ) *Mar 1 00:00:32.639: %BGP-5-ADJCHANGE: neighbor 10.1.24.4 Up !! OSPF cost of the interface * 0x00000013 Ip address 3.3.3.3 255.255.255.0 ip router isis We started CEF on R3 . In fact, in CEF , the default load balancing method is destination-based load balancing. CEF 's !! Re-release the local direct loopback 2.2.2.0/24 to level1 Complete basic IP configuration (configuration omitted) Tib entry: 1.1.1.1/32, rev 2 Outgoing OSI network layer addressing is achieved by using two types of hierarchical addresses: NSAP and NET . Traditional IP routing only considers metric when routing . For example, if we are running OSPF in the above figure , then R1 to 1.0/24 and 2.0/24 will preferably be from R2 to R3 . Path because the metric is small. Then this directly causes the idle of another optional path and the excessive congestion of the main path. Reservable Bandwidth[7]: 104 Mpls traffic-eng tunnels ip rsvp bandwidth Here are some examples of FEC : 1.0.0.0 10.1.123.0 is directly connected, FastEthernet0/0 0.0.0.0/0 [115/10] via 10.1.123.3, FastEthernet0/0 value Hello 204 403 5.5.5.5/32 0 Tu0 point2point MAC/Encaps=14/22, MRU=1496, Label Stack{305 403} ,ccna exam format, via Et0/1 0E00003017000E00003016108847 0013100000193000 Router isis IS-IS uses a simple two-layer structure. The IDP and HODSP are combined to be used as the area ID of the Layer 2 route , and the remaining system IDs are used as the first layer of routing. R4#sh mpls tr tun 0x00000017 ! Negotiating Label space Path: valid Net 49.0001.0000.0000.0001.00 Partial sequence number packets ( PSNP ) partial serial number packet You can see Path weight=3 . How did this 3 come from? Because R1 establishes a tunnel to R4 , then R1 reaches R4 (note that it is not Point-to-point link MTU implicit check IDI Initial Domain Identifier , a variable-length initial domain identifier that identifies a subdomain under AFI In the dynamic setup, let the tunnel head end router calculate the path that the TE tunnel can traverse the network to the tail end in an optimal manner. We only need to configure the destination of the tunnel , and then the first-end router uses the CSPF algorithm to calculate the path itself. *Aug 18 04:37:06.239: If a router plurality of distribution on the net, these NET system ID must be the same. Router-id 3.3.3.3 Holdtimer : If the adjacency relationship is not established, the receiving router creates an adjacency relationship and identifies the adjacency type ( L1 , L2 ), and sets it to the initial state until the subsequent hello packet is confirmed to confirm the adjacency. Here are a few things to note: Bytes tag Outgoing Next Hop Broadcast multi-access link Independent control mode : Independent Control 0xCC Select the path with the least number of hops 75000 SSN ( send Sequence Number ): send serial number flag The average allocated traffic on the interface. Network 10.1.45.5 0.0.0.0 area 0 View message R1#sh mpls ldp bindings !! Neighbor's SNPA , the interface MAC of the other party in the LAN When a router receives a tagged message, it searches in the LFIB table. The related matching entries in the LFIB table have outbound actions or labels for the inbound tag, and next hop information. . Or Tunnel Id 1 Router(config-if)#mpls traffic-eng flooding thresholds up/down ? A result (one path) calculated by the previous CSPF is sent to another module: RSVP . The traffic of MPLS TE is forwarded by label. This label is distributed by RSVP . In addition, the reservation of resources is also completed by RSVP . The LSR in the link of the LSP needs to know the inbound and outbound labels of the TE tunnel for a particular LSP . The LSR in the link can only learn the label through the signaling protocol between the head end router and the LSR in the link . CISCO uses TE extended RSVP to deliver signaling for MPLS TE tunnels. RSVP is extended so RSVP can carry MPLS label information and other TE -specific parameters. Essentially, RSVP attempts to follow the LSR from the head end to the endThe path of the LSR conveys signaling, and this path is calculated based on the TE database of the headend LSR . Another very important feature of RSVP is the establishment and maintenance of resource reservations (such as bandwidth).