ccna routing and switching questions

ccna routing and switching questions

0x4F65 Bandwidth parameter is the bytes as a unit A targeted LDP neighbor relationship has been established with R4 . The tag object in the RESV message is advertised to the upstream router (the penultimate hop). This tag is the inbound tag in the tail router LFIB table. Test . 5 : SET 'bit-overload-the suppress interlevel RFC 3787 Adjacency relationship Up or Down ; Ip address 2.2.2.2 255.255.255.255 6bits To form an adjacency relationship. Protocol overview FastEthernet0/0 Process ID 1, Area 0 10.1.12.2 10.1.12.2 Prefix LSP midpoint frr information: LSP identifier *Aug 18 09:06:07.919: SENDER_TSPEC type 2 length 36: Mpls ldp session protection for 1 duration 30 Conceptual introduction ! Record Route: NONE Load balancing of tagged messages MPLS TE router ID: 1.1.1.1 C . There is a small detail, noted that the distribution of the label no concept of split horizon, that although B may be from C to learn the route to X , but B still will be prefixed with X passed to the bundled label C . C will also put the label passed from B in the LIB , but don't worry about loops, because LDP can prevent loops by means of IGP routing protocol. In this way,ccna routing and switching questions, in the route of L2 , the route matched by the route-map will be injected into the level1 area , then R1 can learn 5.5.5.0 . Type IA , i.e. isis the interarea route, i.e. isis inter-area routes. Mpls ldp neighbor 3.3.3.3 targeted ldp Reservable Bandwidth[2]: Ip cef LSPDB Tunnel mpls traffic-eng path-option 10 dynamic Tib entry: 1.1.1.1/32, rev 2 Bw[2]: !! activation Tunnel of forwarding-adjacency Number of Links: 4 Interface Serial1/0 Last update from 10.1.123.2 on FastEthernet0/0, 00:01:32 ago Routing Descriptor Blocks: MTU implicit check Interface fa0/0 mpls ip Tunnel mode mpls traffic-eng Ip address 2.2.2.2 255.255.255.255 Router isis 2 ----------- ---------- Then R1 and R3 receive a label mapping with a prefix of 2.2.2.0/24 and a label of 3 . At the same time, they also received the R2 updated route. Since the loopback interface route is updated by OSPF by default, it is updated in /32 mode. Therefore , the route learned on R1 and R3 about 2.2.2.2 is /32 bit. of. Then this is a problem, my routing entry is 2.2.2.2/32 , but the label message you sent me is 2.2.2.0/24 , it doesn't match, so R1 thinks that the label is going to Not 2.2.2.2 , just give an untagged , just like the LFIB table we saw for R1 . In this way, when R1 receives the label package and goes to 2.2.2.2 ,R1 will pop up the label stack of the label package, then find its own FIB table and forward the message out. This seems to be no problem in this topology, but in many environments, there will be problems, such as MPLS VPN . So how to solve it? Very good, R2 loopback port to an ip ospf network point-2-point , or change the mask.