9tut ccna labs

9tut ccna labs

!! activation level1 of MPLS TE LSPID 101 Metric Type: TE (default) InLabel : - Outgoing IGP floods TE information when: Then you need the top-level tag, which looks at the next hop. The next hop is 5.5.5.5 , so be sure to find the 5.5.5.5 tag. As we have seen from the routing table, at this point R2 goes to 5.5.5.5 and actually enters the TE tunnel , then: Based on the information in the link state database, the almost identical algorithm, the SPF algorithm, is used to calculate the optimal route. Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 521 RSVP Path Info: Version = 0 length in words = 7 service id = 5, service length = 6 Router-id 3.3.3.3 10.1.12.2 Define source *Aug 18 09:06:07.919: SENDER_TSPEC type 2 length 36: Mpls traffic-eng tunnels mpls label range 100 199 One goes from tunnel0 , cost=1000+1=1001 one goes from eth0/1 , cost=10+10+10+1=31 Note: a L1 / L2 router if the other area router adjacency relationship, it will to this area of the L1 router advertisement himself outlet, the specific method is the raw cost region L1 LSP when packets ATT bit Set 1 The configuration of R1 is as follows: Mpls traffic-eng tunnels mpls label range 500 599 Sub Pool Interface loopback Remote binding: tsr: 2.2.2.2:0, tag: imp-null tib entry: 10.1.13.0/24, rev 8(no route) CSPF ( Constrained Shortest Path First ) SPF algorithm with constraints Retention mode (the Label Retention) : free mode (Liberal Retention) OSPF version1 was released as RFC1131 in October 1989 . The 1990 Nian 12 Yue has IP routing extensions Integrated IS-IS Metric: 10 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnets Interface eth 0/1 Flooding Protocol: OSPF Header Information:: 1.0.0.0/24 is subnetted, 1 subnets RFC1195 Router(config)# mpls ldp neighbor [vrf vpn-name] ip-addr targeted [ldp | tdp] The TTL is placed in the label header. Turning off TTL propagation prevents the MPLS network from being exposed (by traceroute ). In RFC5250 In been described herein: A neighbor Capable IS-opaque and only IF The IF IT sets-O 'bit in the Options The ITS Database Field of the Description packets; The-O' bit the NOT SHOULD BE SET When ignored and the MUST BE R2(config)#key chain test R2 (config-keychain)#key 1 The label can be ejected on the (the penultimate hop). C only needs to find the FIB table to forward the received IP packet. The OSPF adjacency relationship will not be established until the LDP session is successfully established or the "synchronization hold time" expires . The synchronization here indicates that the local label bundle has been sent to the LDP peer through the LDP session . However, if A is activated on the router and MPLS LDP-IGP is synchronized, and there is only one link between A and B , and no other available path to B , the OSPF adjacency will never be established. Because OSPF waits for the LDP session is established, but the LDP session can not be set up because A can not learn in its routing table B of LDP routerID route, so enter an infinite loop, OSPF and LDP adjacencies will never Unable to create. In this case,9tut ccna labs, LDP-IGP synchronization will activate the OSPF adjacency unconditionally , so that the link will advertise the largest.The metric value until the synchronization is complete.