ccna demo exam free

ccna demo exam free

NET *Aug 18 09:06:07.919: SENDER_TSPEC type 2 length 36: LSP Database LSP database Mpls traffic-eng tunnels mpls ip R4#sh mpls tr tun !! Bandwidth requirement is 20M Ip unnumbered Loopback0 tunnel mode mpls traffic-eng tunnel destination 5.5.5.5 [115/10] via 10.1.123.2, FastEthernet0/0 Object name IS-IS hierarchy 5.5.5.5 [110/2] via 0.0.0.0, 00:00:01, Tunnel0 Interface loopback0 Tunnel mpls traffic-eng autoroute announce Priority 7 : 9375000 Explicit Route: 10.1.12.2 10.1.23.2 10.1.23.3 10.1.34.4* Ip address 10.1.123.1 255.255.255.0 0 kbits/sec Tunnel mpls traffic-eng bandwidth 2000 Interface eth 0/0 Next Hop TE metric: 1 Swap Mpls traffic-eng tunnels mpls ip ISIS default flooding period is 15 minutes by lsp-refresh-interval Review Reserved bandwidth changes (significant changes) Show isis lsp-log A label switch router (LSR) LABEL RFC1195 Configuration command R4#sh isis da FRR intf/label *Aug 18 09:06:07.919: Incoming PathError: Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 204 403 5.5.5.5/32 0 Tu0 point2point MAC/Encaps=14/22, MRU=1496,ccna demo exam free, Label Stack{305 403} , via Et0/1 0E00003017000E00003016108847 0013100000193000 Interface eth 0/1 O Tunnel mode mpls traffic-eng Tag 2.2.2.2/32 *Aug 18 09:06:07.919: ADSPEC type 2 length 48: The IS-IS area defined in ISO 10589 is the stub area. Attached defines four metric types. CISCO IOS only supports the default metric . AutoRoute only affects the head end of the TE tunnel. Other routers do not know the existence of the TE tunnel and will not affect their routing. 8bit maximum 255 , usually in the labeling when it is the ordinary ip packet TTL direct copy came Interface Serial0/0 Network Next Hop In label/Out label Reservable Bandwidth[7]: Interface priority (default 64 ), attention and OSPF difference is that priority 0 of IS are also involved in DIS election Link Link The maximum reservable bandwidth is obviously the bandwidth that can be used by the TE in the link. It can be configured through the ip rsvp bandwidth command. Comprising one or more routers is configured on the source IP address, the CISCO IOS in Mpls traffic-eng signalling interpret explicit-null verbatim FastEthernet0/0, Src IP addr: 10.1.12.2 Addresses bound to peer LDP Ident: Label Hostname: R1 Router ID: Label space:Per-Platform Bandwidth: 20000 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF Metric Type: TE (default) LDP discovery sources: Delay metric is optional, the link transmission delay is not supported. Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 C 1.1.1.0 is directly connected, Loopback0 10.0.0.0/24 is subnetted, 2 subnets Interface Ethernet0/0 Network 3.3.3.3 0.0.0.0 area 0 Two processes: neighbor discovery process, session establishment process Assign and distribute labels For Layer 2 link layer encapsulation, it can be all package types supported by CISCO IOS , PPP , HDLC , Ethernet, and so on. Then in the header of these Layer 2 , it is necessary to have a corresponding protocol field to indicate that the upper layer is a label header. An IS-IS router can be configured to summarize IP routes into Level 1, Level 2, or both, at the same time, Peer LDP Ident: 2.2.2.2:0; Local LDP Ident 1.1.1.1:0 10.1.12.2 [MPLS: Label 203 Exp 0] 200 msec 84 msec 136 msec DIS is preemptible, and there is no backup DIS , which means that when the DIS hangs, it is immediately reselected. 201 TCP connection: 3.3.3.3.33664 - 1.1.1.1.646 Ip cef AutoRoute: enabled LockDown: disabled Loadshare: 2000 bw-based auto-bw: disabled When the forwarding adjacency feature is used, the tunnel end and the end must be in the same area, and the tunnel interfaces at both ends must be configured. That is, this must be a bidirectional tunnel, and both tunnel interfaces must activate forwarding adjacency. Mpls traffic-eng tunnels mpls label range 500 599 Mpls traffic-eng tunnels ip rsvp bandwidth Take a look at the routing table for R1 : Run the interface configuration command: isis metric value level-1 | level-2 to configure the metric on the same interface. Mpls traffic-eng tunnels ip rsvp bandwidth Network 10.1.34.3 0.0.0.0 area 0 R2-PE1#show mpls traffic-eng tunnels Pop tag *Aug 18 11:26:02.546: Local binding: tag: imp-null Or Tunnel Id An LDP packet carries multiple label mapping messages. 0x00000037 Reservable Bandwidth[3]: Static hostname mapping Interface loopback0 End host. For example , the ISO CLNP workstation searched by the ES-IS protocol . R3#show ip route If not manually set metric , the re-release came default metric is 0 , that is, R2 routed the metric is R2 is S0 / 0 port Level-1 metric Et0/0 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 ID: path option 10 [248] R1#traceroute 55.55.55.55 *Aug 18 11:26:02.546: Access-list 1 permit 3.3.3.3 IS-IS Level-1 Link State Database: PLR ( Point of local repair ): Local repair point, this is the head end of the backup tunnel Next, the data is sent to R3 . After R3 checks its own LFIB table, it replaces the 303 tag with 203 and then throws it to the next hop R2 . After receiving the label package, R2 looks at its own LFIB table and finds that the outgoing action is a PoP . Then the label is ejected and becomes the original IP packet, and then it is thrown to R1 . Finally, R1 forwards the IP packet to R5 . So why is R2 here PoP here ? The answer is that this BGP routing, we talked about earlier, in fact, it is using a next hop 10.1.15.0 label, 10.1.15.0 is R1 directly connected network segment, so the R1 when the label assigned to the route , gave it aPoP , then distribute this result to R2 , which is why.