ccna 200 120 pdf free download

ccna 200 120 pdf free download

*Aug 18 09:06:07.919: version=0, length in words=7 LSP overview LDP Id: 2.2.2.2:0 // 2.2.2.2 is router-id ; 0 is label gap Fa0/0 ! 202 By default, IS-IS of the LSP maximum survival time of 1200s , R1#traceroute 55.55.55.55 ! ! R1#traceroute 6.6.6.6 Debug information on R1 PDUtype : PDU type. This is a 5- bit field that identifies the type of IS-IS packet. A value of 15 indicates L1 LAN IIH ; a value of 16 indicates L2 LAN IIH ; a value of 18 indicates L1 LSP ; a value of 20 indicates L2 LSP ; a value of 24 indicates L1 CSNP ; a value of 25 indicates L2 CSNP ; a value of 26 indicates L1 PSNP A value of 27 indicates L2 CSNP . ! Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 9 RSVP Path Info: Interface Tunnel0 I/E LDP certification Based (internet per-Platform ) compared to the label space-based interface ( per-interface ) security label space to lower The configuration of R3 is as follows: 0/0/0 IGP flooding The forwarding adjacency feature will cause the TE router to advertise the TE tunnel as a virtual path (direct link) in the IGP routing protocol area, so that all routers know the existence of the tunnel. The IGP protocol here can be OSPF or IS-IS. ! Finally choose the red path above because the TE metric of this path is smaller 10.1.23.3 [MPLS: Label 300 Exp 0] 0 msec 0 msec 0 msec System Id Type Interface IP Address State Holdtime Circuit Id Or Tunnel Id When IS-IS is running on an NBMA network, there are some problems. Can be modified as the basis for calculating the shortest path of the TE tunnel Regional merger Ip cef Let's experiment one by one: CSPF maximum arbitration Ip router isis RSVP path establishment process In the previous configuration, the loopback of all devices in the device was /32 , so there was no problem. Now let's take a look at R1. Admin: up Interface loopback0 By default TE metric equal to the IGP Metric (This means that, without using the above command interface disposed in the physical, TE metric equal to the IGP Metric ) supporting agreement Global Pool !! Activate the autoroute feature of the tunnel ! IS-IS packet format Terminal system ES FRR intf/label *Aug 18 11:26:02.546: LSP Seq Num MPLS VPN Backbone carried out within for MPLS TE in the OSPF extensions and R1 build on a TE the Tunnel , for their own sources of the Loopback0 , for the purpose of R5 is 5.5.5.5 Admin. Weight: 1 Flooding Status: ready IS-IS requires the same length of the SystemID in the entire domain . If you receive the IIH , the " System ID Length " field is local to Tspec parameter id = 127,ccna 200 120 pdf free download, flags = 0, length = 5 O Activate LDP on all devices. To facilitate observation, specify the label range for each device . For example , the label range of R1 is 100. Mpls ip interface fa1/0 Based on the information in the link state database, the almost identical algorithm, the SPF algorithm, is used to calculate the optimal route. Network 2.2.2.2 0.0.0.0 area 0 R4 configuration is as follows AutoBandwidth Interface eth0/1 TE tunnel reoptimize VPN tags are distributed by BGP . In any case, LFIB is always used to forward inbound tagged messages. Local binding: tag: 102 10.1.45.4 10.1.45.5 If the tunnel 0 setting priority than the tunnel 1 remains low priority, then tunnel0 can preempt Tunnel1 . (Tunnel0) Destination: 5.5.5.5 Record Route: NONE There are two types of LSPs : Level1 LSP PDU and Level2 LSP PDU. 404 Mpls ip For details on the untagged , aggregation, etc., and the causes, see "PASSHOT MPLS VPN Technical Documentation" *Aug 18 04:37:06.243: *Aug 18 09:06:07.919: version=0, length in words=7 TIME_VALUES i L2 Run IS-IS on the entire network to announce direct connection and loopback interface. ----------- 75000 We can avoid this problem by using overload-bit . The command is explained as follows (configured under the router isis process): Metric: 10 10.1.34.4 The two new TLVs are: Neighbor discovery is performed by means of the Hello packet of UDP . The source and destination port of this Hello packet are both UDP646 . You can see the main two contents contained in it: one is the directly connected network segment of R1 , here is 10.1.123.0 and 1.1.1.0 , and the other is the direct connection of R1 . CSPF algorithm working mechanism Interface eth 0/0 Ip router isis *Aug 18 09:06:02.699: TIME_VALUES type 1 length 8 : Nexthop 10.1.12.2 FastEthernet0/0 label 204 Ip rsvp bandwidth Mpls traffic-eng tunnels mpls label range 300 399 Host Local tag: 104 ! R2#show ip route Test the transmission process of the data stream, observe the phenomenon The target network segment involved in MPLS is the same as traditional IP forwarding. *Mar 1 00:09:39.243: ISIS-Adj: Rec L1 IIH from cc01.0a44.0000 (FastEthernet0/0), cir type L1, cir id 0000.0000.0002.02, length 1497 Router(config-if)#mpls traffic-eng tunnels Like the above figure, it is very easy for traffic to go unilaterally. The R1-R3-R4-R5 link does not carry traffic. It may be possible to adjust the link such as cost to make the following link available. The method may bring problems to other traffic while adjusting. In general, the IP traffic engineering guides the traffic to a relatively simple one. It is nothing more than the ospf protocol that manipulates the cost by using the characteristics of the protocol itself, or manipulates the path attributes like BGP , or through policy routing. Control.