cisco ccna certification exam answers

cisco ccna certification exam answers

R1#show isis da R3.02-00 detail R2 . But why? The reason is that the label assigned by R2 to route 10.1.12.0 is PoP , because 12.0 is the directly connected network segment of R2 , and there is a second-end hop pop-up mechanism. Then this IP packet is R2 to stop the meal , because R2 does not have 6.6.6.6 and 5.5.5.5 routing. How to do? Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Ensure reliable diffusion of LSPs on point-to-point links *Aug 18 09:06:07.919: HOP type 1 length 12: Ip address 2.2.2.2 255.255.255.255 R3#sh mpls forwarding-table Overload-bit The NSAP address of ID49.0001 , which enables seamless, collision-free, and non-destructive reconfiguration of the router's new NSAP address. C R1#show ip ospf database Router(config-if)#tunnel mpls traffic-eng path-option 10 explicit name ccietea ! ! Associated to path-option Interface eth 0/0 Next, R2 receives the tag packet. R2 knows that this is a tag packet from the type field of the Layer 2 Ethernet frame header of this packet, so it looks for its own LFIB table: View MPLS forwarding table ( LFIB ) Frame-relay map ip 10.1.123.1 201 broadcast *Aug 18 04:37:06.243: peak rate = 250000 bytes/sec Outgoing tag or VC ...... ...... Now we will complete the following configuration on R2 : Tunnel mpls traffic-eng record-route Outgoing interface MPLS coding 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 ", 101 MPLS TE takes into account the actual use of network resources,cisco ccna certification exam answers, so it requires more information than just interface bandwidth or cost . Support for diagnosis of LSP tunnel !! The link to the problem , the metric is set to 65535 Select the path with the lowest IGP cost Network 3.3.3.3 0.0.0.0 area 0 Ip cef Bw[3]: Experimental configuration BW (kbps) Local binding: tag: imp-null Tunnel destination 4.4.4.4 tunnel mode mpls traffic-eng The configuration of R2-PE1 is as follows: We see that the Tunnel is up, and R2 goes to the 5.5.5.5 route, the outgoing interface is tunnel , and the TE tunnel is up. 10.1.34.4 Router isis The maximum number of regional addresses configured by a single router must be the same as that of neighboring neighbors. By default, CISCO IOS routers support the maximum number. Although the implicit null tag also uses a tag with a tag value of 3 , tag 3 will never appear in the tag stack of the MPLS message, which is why it is called an implicit null tag. Interface Ethernet0/0 Optional Checksums in IS-IS Kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF Note CISCO IOS in, LDP will not BGP in IPv4 prefix bundled label. Form a LAN adjacency: 202 100 ! Mpls ip Interface Tunnel0 Router bgp 123 R2-PE1#show ip route FRR intf/label TE 's policy routing is no different from traditional policy routing, and it does not change the routing table traffic forwarding based configuration policy. SPF calculation Important difference: I have already said it above. In all remote labels that bundle a particular prefix , the LSR uses only one of the labels to determine the outbound label for the prefix. RIB , which is the routing table, determines what the next hop of the IPv4 prefix is. The LSR selects the label of the next hop in the routing table that reaches the prefix from the remote label received by the downstream LSR . The LSR uses this information to create its own label forwarding information base, LFIB .