easy way to pass ccna exam

easy way to pass ccna exam

Router ospf 1 75000 Type 9 flooding range only on this link ES-IS Regional merger Router-id 2.2.2.2 *Mar 1 00:00:32.759: ISIS-Upd: Important fields changed Local binding: tag: 102 R3 found that the inbound tag 300 's tag package, the outbound tag is a POP , so he pops the top tag (actually a layer), and then directly throws the popped data to 10.1.34.4 , note that this time it does not need Find the FIB table again because there is already a next hop in the LFIB table. Eventually this data was passed to R4 . Remote binding: tsr: 2.2.2.2:0, tag: imp-null IGP flooding 10.1.23.3 Interface eth 0/1 *Aug 18 09:06:02.699: SENDER_TEMPLATE type 7 length 12: 0x26DC SENDER_TEMPLATE After flooding related information through the IGP protocol ( OSPF or ISIS ), all TE routers form a unified TEDB in the area. R3(config-if)#tunnel mpls traffic-eng forwarding-adjacency ? 0 kbits/sec Look at the routing table on R3 : One is the LAN on to Ll Router ( Level-1 to the IS the Hello PDUs the IS LAN ), a method in LAN on to L2 of Router (a to the IS LAN the Hello PDUs the IS Level-2 ) Type 1 length 12: Src 2.2.2.2,easy way to pass ccna exam, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 5 RSVP Path Info: Each transport layer entity is assigned an NSAP address. The NSAP address is the network layer address of the CLNS packet . It is used to identify the device. It consists of an initial domain part ( IDP ) and a domain-defined part ( DSP ). These two parts are detailed below, let us understand this. Interface Ethernet0/1 Router isis Mpls traffic-eng tunnels ip rsvp bandwidth LSP Seq Num LSP Checksum LSP Holdtime Outgoing Access-list 1 permit 3.3.3.3 Let's look at the picture. If R1 to R6 want to establish a TE tunnel , which is the optimal path, and the bandwidth requirement is 30Mbps , what is the calculation process? First of all, thanks to the flooding of link state information in the zone, " OSPF or IS-IS for MPLS TE extensions ", Next we R3 and R5 activate the forwarding adjacency, then R3 and R5 will be advertised in this region of the Tunnel- ( L in the manner of direct links). Path maintenance Type 7 length 12: If the sysID length is inconsistent, the IIH is ignored . ISIS default flooding period is 15 minutes by lsp-refresh-interval Review 3.3.3.3/32 Frame-relay map ip 10.1.123.3 201 broadcast frame-relay map clns 201 broadcast *Aug 18 11:26:02.546: Incoming Resv: !! R2 sends a resv message to R1 R1# Configuration command The Global Pool Sub Pool !! interface is the bandwidth pool for each priority tunnel In preparation, the same label is assigned to one FEC . Traffic belonging to one FEC has the same forwarding mode, forwarding path, and forwarding treatment. 10.1.23.3 [MPLS: Label 300 Exp 0] 108 msec 116 msec 64 msec The sub-TLV of 0-244B is mainly used for MPLS TE. Network 10.1.45.4 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Local Non-broadcast multi-access link (in fact, IS-IS does not understand NBMA media) Interface fas1/0 Network 10.1.23.2 0.0.0.0 area 0 ISIS for NBMA support network is still flawed, as in the previous experiment demonstrates, if it is run on a Frame Relay main interfaces ISIS , or P2MP run on sub-interfaces ISIS , then you must ask PVC full-mesh, otherwise, the route study Not normal, but even if the PVC is fully interconnected, there are hidden dangers. If a PVC fails, routing will still have problems. Contains the tunnel's prioritization, hold priority, and some flags Tunnel mode mpls traffic-eng tunnel destination 5.5.5.5 R5 and R6 each announce their own Loopback route in the BGP process. Administrator-weight , and only the IGP metric is used to calculate the shortest path of the tunnel . R1#deb ip rsvp dump-messages P2P Links: Multiacces Links: Interface fast0/0 ! Interface eth 0/0 Network 10.1.34.3 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 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.