ccna objectives

ccna objectives

Provide the best route for the network 16 Ip unnumbered Loopback0 1.1.1.1/32 Router-id 2.2.2.2 Tib entry: 4.4.4.4/32, rev 14 Mpls traffic-eng tunnels ip rsvp bandwidth Redistribute connected level-1 The router will check the received IIH and confirm the parameters. System Id Type Interface IP Address State Holdtime Circuit Id 1bit Router(config-if)# mpls traffic-eng attribute-flags ? 0x7056 Commonalities: Router(config-if)#tunnel mpls traffic-eng path-option 10 explicit name ccietea ! ! Associated to path-option MOSPF extension provides support for IP multicast routing (Link Data) Router Interface address: 0.0.0.13 Number of MTID metrics: 0 RSVP extension to LSP tunnel Network 2.2.2.2 0.0.0.0 area 0 Interface eth0/0 DIS is preemptible, and there is no backup DIS , which means that when the DIS hangs, it is immediately reselected. Looking at the above topology, we need to establish a TE tunnel between R1 and R5 . Under normal network conditions, we want the tunnel path to be R1-R2-R5 , which is an explicit specified path. In order to make the tunnel path have a backup, we can define a path-option , this path uses the dynamic setting method, let CSPF calculate it by itself, then the configuration is as above. RFC1195 Pop Label The above command will directly change the cost of the above calculated route to y. Take it. Priority 0 : 9375000 Route-map test permit 10 router isis 1096 About Explicit Path R1.00-00 10.1.12.2 Note ESH and ISH PDU are ES-IS of the PDU instead of IS-IS of the PDU The status of IP traffic engineering Next, R3 receives the tag package. Similarly, look at your own LFIB : Tunnel: Src 2.2.2.2, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 5 RSVP Path Info: *Aug 18 11:31:44.598: Again, as long as set-overload-bit is used , the overload-bit of the LSP sent by R2 will be set. *Aug 18 09:06:07.919: Hop Addr: 10.1.12.1 LIH: 0x20000403 Router-id 2.2.2.2 System Id Type Interface IP Address State Holdtime Circuit Id We have found, R6 originating packet is IP , to the R4 , R4 check CEF table, the destination found: 5.5.5.5 entry is associated with a the Label : 303 , then R4 will IP over cladding pressure tab 303 , and then lost Give the next hop 10.1.34.3 which is R3 . The following is the CEF entry for R4 : Mpls ldp igp sync holddown 5000 Next Hop As long as the route prefix is ​​learned locally through the IGP , the route prefix is ​​assigned a label ( locally also assigns a POP label to the direct route ) Ip unnumbered loopback 0 tunnel destination 5.5.5.5 tunnel mode mpls traffic-eng 75000 The configuration of R4 is as follows: *Aug 18 09:06:07.919: 10.1.24.4 (Strict IPv4 Prefix, 8 bytes, /32) 0x0000000D Metric , the tunnel 's Metric (for OSPF for the tunnel mouth Default cost = 1000 ) will link status information together with the notice to other neighbors, and also affects other routers routing. Complete MPLS TE configuration on R1 . Interface Ethernet0/1 Outgoing interface In this way, B receives a label packet with a label value of 22 sent by A , and pops the label to obtain an IP packet, and then forwards it to C , and then C only needs to search and forward the FIB table of the IP packet . The status of IP traffic engineering ! 3.0.0.0/24 is subnetted, 1 subnets R1#sh mpls forwarding-table Network 10.1.34.3 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 After the tunnel setup failed LDP allows non-directly connected neighbors, so that neighbors discover that they do not need to rely on multicast HELLO packets, but instead use unicast packets. IS reachability LDP discovery sources: Integrated IS-IS The checksum calculation knows the end of the packet starting from the field after the remaining time-to-live field in the LSP . When the LSP copy is propagated between routers in the network, its checksum field is not modified. Router(config)#interface fast0/0 Each metric type is 8bits and has the following form: 1 908 lab environment 199 , R2 is 200 299 , and so on. LDP neighbor discovery Ip address 3.3.3.3 255.255.255.255 *Aug 18 04:37:06.239: Minimum Path Bandwidth (bytes/sec): 1250000 Priority 3 : 9375000 Fa0/0 FastEthernet1 / 0, Src IP addr: 10.1.13.3 Addresses bound to peer LDP Ident: Seq# Checksum Opaque ID I mentioned the four metric types of IS-IS . The bits that can be used in each metric are the lower 6 bits. That is to say, the maximum interface metric is 63. We propose several new TLVs to make up for this defect. Device Internet segment 10.1.xy.0 / 24 , where xy is the device number, X small y large Point3 FR The DLCI Mpls traffic-eng tunnels ip rsvp bandwidth *Aug 18 09:06:02.699: Outgoing Path: !! The path message sent by R1 has changed. Mpls traffic-eng reoptimize events link-up Bytes tag switched The paragraph appears in the first paragraph. TE tunnel is one-way LSP Holdtime Ip address 2.2.2.2 255.255.255.255 Admin: up 10.1.23.0 That is , the direct link of R2-R3 is imported into 49.0001 , but the default route generated by R3 does not come together. Fa0/0 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 During the ES-IS work process,ccna objectives, the end system sends an ESH ( ES Hello ) message to a specific address to notify the router of its existence. The router listens to the ESH packet to discover the ES existing in the network , so that the packet arriving at the specific ES address is subsequently forwarded to the ES . In ES-IS , the router advertises its own existence to the ES by sending an ISH ( IS Hello ) message to a specific address . ES also monitor ISH , if a plurality of received IS transmitted ISH , ES will then be selected, and sends all data to the IS .