new ccna questions and answers

new ccna questions and answers

R2(config)#key chain test R2 (config-keychain)#key 1 Router ospf 100 OutLabel : Ethernet0/0, 201 RSVP Signalling Info: Manual re-optimization 10.1.34.4 4.4.4.4 !! LSP path Interface eth 0/0 ! Additional Knowledge: Label-to-label TTL diffusion behavior in SWAP , PUSH , POP operations 1.0.0.0/24 is subnetted, 1 subnets LSP Checksum Ip rsvp bandwidth Interface eth0/0 In front of the IP package. Then this 303 is actually the label assigned to the route of the next hop 10.1.15.0 of BGP route 5.5.5.5 . In other words, LDP does not assign labels to BGP routes, but assigns labels to the next hop (route) of BGP routes. Tunnel mpls traffic-eng priority 6 6 Parameter id=127, flags=0, parameter length=5 Network 1.1.1.1 0.0.0.0 area 0 Interface eth 0/0 Peer LDP Ident: 3.3.3.3:0; Local LDP Ident 1.1.1.1:0 IS-IS router advertisements contain direct neighbors and routing information TLVs . 10.1.23.3 [MPLS: Labels 304/505 Exp 0] 4 msec 4 msec 4 msec PATH Or Tunnel Id *Aug 18 11:26:02.546: System Id LSP Seq Num LSP Checksum LSP Holdtime Mpls ldp session protection for 1 duration 30 Bw[7]: R3 Going is the tunnel . therefore: To peer-access-list - the IP access-list that selects the MPLS neighbors that will receiver the labels RSVP extension to LSP tunnel Router(config-if)#ip rsvp bandwidth [total-flow-kbps] [single-flow-kbps] Path option 10, type explicit test (Basis for Setup, path weight 20) L2 LS age: 705 Holding timer : Hold time, default 30S 2.2.2.0 [115/20] via 10.1.123.2, FastEthernet0/0 3.0.0.0/24 is subnetted, 1 subnets Network 5.5.5.5 0.0.0.0 area 0 Network 10.1.45.5 0.0.0.0 area 0 132 R1#sh isis neighbors detail *Aug 18 04:37:06.239: Error Code: 24 (Routing Problem) 1096 When there is a problem with the path of R1-R2-R5 , for example , the link between R2-R5 is DOWN , then the TE tunnel will switch to the path-option of the next priority , that is, the dynamic setting mode. Therefore, it will switch to R1-R3-R4-R5 . Conceptual introduction Ip cef Each transport layer entity is assigned an NSAP address. The NSAP address is the network layer address of the CLNS packet . It is used to identify the device. It consists of an initial domain part ( IDP ) and a domain-defined part ( DSP ). These two parts are detailed below, let us understand this. Average rate=250000 bytes/sec, burst depth=1000 bytes R3 found that the inbound tag 300 's tag package, the outbound tag is a POP , so he pops the top tag (actually a layer), and then directly throws the popped data to 10.1.34.4 , note that this time it does not need Find the FIB table again because there is already a next hop in the LFIB table. Eventually this data was passed to R4 . Record Route: 2.2.2.2(200) 4.4.4.4(403) " MPLS technology architecture."Attributes are explicitly assigned to the TE tunnel through administration action. PDU length : the length of the entire PDU , including the header Router(config)# mpls ldp neighbor xxxx labels accept acl Mpls ldp igp sync holddown msecs Once the router receives the IIH , it checks the adjacency of the sender of the hello packet. If the adjacency has been established, the adjacency is reset. The ACL is used to match who sends an explicit null tag. Interface fa0/0 mpls ip Election DIS . In this network, the DIS will generate and flood the new pseudo-node LSP on each of the routing layers it participates in (whether L1 or L2 ) and on each LAN it is connected to . Each router on the LAN establishes adjacency with all other routers and DISs , and does not elect to back up the DIS router. The elected DIS does not guarantee that it will always be DIS . Lsp-refresh-inverval to modify. Default metric Priority 1 : 9375000 Now create a tunnel on R1 : *Aug 18 09:06:02.699: HOP type 1 length 12: Explicit_route About 30.0 / 24 prefix, C allocates a label 23 , the mapping is transmitted to the B ; B local to 30.0 / 24 allocates a label 22 , the mapping is transmitted to the A . Assume that this is an internal network of the operator, R4 is the national trunk,new ccna questions and answers, R2 and R3 are left to the provincial, and the provincial internal ran IS-IS to carry the routing prefix information in the Core , and as the provincial dry exit R2 , R3 The route prefix or default route of a specific national trunk is issued. We take the default route example here. Both R2 and R3 maintain the EBGP neighbor relationship with R4 . In this case, R2 is required to be upgraded and then restarted. After the restart, IS-IS converges faster than BGP . After the first convergence, R2 to the IS-IS area. Internal flooding LSP , R1 will use R2 as the next hop of some route prefix, or the next hop of the default route. However, at this time , BGP of R2 does not converge, so that R2 is reached.The data may be discarded and black holes appear.