ccna certification test

ccna certification test

LSP tunnel is one-way The link between R4-R6 and R5-R6 has a bandwidth of only 20M , which obviously does not meet the requirements. Therefore, R1 will only consider the following links: Ip address 10.1.12.2 255.255.255.0 LSP Head, Tunnel0, Admin: up, Oper: up Src 1.1.1.1, Dest 5.5.5.5, Instance 30 Fast Reroute Protection: None Supports allocating network resources for explicit LSP tunnels 103 Priority 1 : 9375000 Once the router receives the IIH ,ccna certification test, it checks the adjacency of the sender of the hello packet. If the adjacency has been established, the adjacency is reset. Fa0/0 Mpls traffic-eng tunnels mpls label range 400 499 Explicit Route: 10.1.12.2 10.1.23.2 10.1.23.3 10.1.34.4* Interface eth0/1 HELLO multiplier ( HELLO multiplier), after the number of HELLO packets lost , the neighboring router declares the neighbor invalid, the default is 3 Metric: 10 Here's what you can verify: Attached-bit *Aug 18 04:37:06.239: SESSION type 7 length 16: Mpls traffic-eng tunnels ip rsvp bandwidth Network 10.1.12.1 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Activate LDP on all devices. To facilitate observation, specify the label range for each device . For example , the label range of R1 is 100. Config Parameters: !!! IS ( layer 0 routing ), then the router will look up the destination address and forward the packet along the best path. R2-PE1#show mpls forwarding-table detail Interface fast1/0 R1.00-00 All routers run OSPF In R2 on Establishment of LIB and LFIB tables !! Use the dynamic calculation method to establish the tunnel PATH The configuration of RouterA is as follows: !! The maximum reservable bandwidth is 75M Ip explicit-path name R2R4 enable next-address 10.1.12.2 75000 kbits/sec, Interface eth0 1/0 The tunnel priority ranges from 0 to 7. The smaller the priority, the higher the priority. 0/0/0 RSVP path maintenance and removal If it is a frame relay primary interface or a P2MP sub-interface, it is required to be a fully interconnected PVC . For details, see the relevant sections of this document. 201 ----------- ---------- R1#sh mpls traffic-eng topology 1.1.1.1 Interface eth0 0/0 Network 10.1.12.1 0.0.0.0 area 0 Untagged HELLO PDU (ESH , ISH and IIH) R5 configuration is as follows ! Router isis Modify the ldp hello message sending interval, the default 5S UP Ip address 10.1.34.3 255.255.255.0 A targeted LDP neighbor relationship has been established with R4 . To peer-access-list - the IP access-list that selects the MPLS neighbors that will receiver the labels Priority 2 : 9375000 5.5.5.5/32, version 22, epoch 0, cached adjacency 10.1.34.3 !! TE tunnel In this way, first R2 will prefer from the tunnel port to R5 , metric=1+1=2 . There are two options for R1 to R5 : Finally choose the red path above because the TE metric of this path is smaller LDP adjacency establishment process Admin: up Oper: up Path: valid Signalling: connected Interface FastEthernet0/0 10.1.34.4 Next Hop Then shut down the e0/1 port of R2 : Each tag mapping message contains two elements : FEC TLV and Label TLV The integrated IS-IS protocol implemented by CISCO was first released during the period 1991/1992 . Since then a series of improvements and extensions have been made. The large-scale development of the IS-IS protocol in major ISP networks began in 1995 , and another important reason was the US government 's interest in ISO CLNS . Although integrated IS-IS has dual routing capabilities, it is interesting to note that most of today's world's largest ISP networks use IS-IS protocols only for IP routing.