ccna certification boot camp

ccna certification boot camp

MPLS TE information distribution Tunnel mpls traffic-eng forwarding-adjacency Network 10.1.34.4 0.0.0.0 area 0 LOOP Detection Label subobject: Flags 0x1, C-Type 1, Label 0 Device Internet segment 10.1.xy.0 / 24 , where xy is the device number, X small y large If there is no PSN pseudo node, the situation is like the above picture. The LSPDB of all routers on the LAN is as shown in the figure. The red dotted line in the figure is the adjacency. We see that there are many adjacencies and the LSPDB is huge. So, is there a PSN pseudo node? Look at the picture below: For point-to-point interfaces, SNPA is the unique identifier for the circuit. For example, on the HDLC point-to-point link, the circuit ID is 0x00. Tunnel mpls traffic-eng priority 6 6 Pop tag Will affect the VPN traffic. Allocation pattern (the Label Allocation) : independent control mode (Independent Control) Name: R1_t0 Status: <0x0-0xFFFFFFFF> Attribute flags LDP adjacency establishment process INIT 22 Mpls traffic-eng tunnels ip rsvp bandwidth Router-id 4.4.4.4 Mpls traffic-eng tunnels ip rsvp bandwidth MPLS TE Router ID: 2.2.2.2 75000 1 class 2 class LSA may carry a plurality of IP prefixes; 3 class 4 class 5 class LSA only carry a single IP prefix, if necessary send multiple IP prefix information, a plurality of LSA Error Value: 0x3 (Tunnel locally repaired) Forwarding tagged messages BGP routing problem, well,ccna certification boot camp, now we use the loopback interface on R1 and R4 to establish IBGP adjacency, the problem is solved. At this time R4 , the go 5.5.5.5 next hop of the R1 of Loopback port addresses, R4 at destined to 5.5.5.5 of the IP when the pressure package label, use is 1.1.1.1/32 routing tag, The same is true for R3 and R2 , then the label package can be opened through 1.1.1.1/32 . AFI+IDI is used to identify the Domain Basic experiment ( NodeProtection ) *Aug 18 09:06:07.919: Controlled Load Service break bit=0 service length=0 Tag information from 10.1.15.0/24, shared local tag: 403 *Aug 18 11:31:44.598: My Address: 10.1.12.1 Router(config-router)# max-area-address xx 10.1.45.0/24 [110/30] via 10.1.23.3, 00:00:01, Ethernet0/1 Local tag Redistribute ospf 1 vrf VPN-A match internal external 1 external 2 exit-address-family Experiment 2 Network 1.1.1.1 0.0.0.0 area 0 Area 2 -byte area identifier, also referred to as Domain from the upper portion (the portion defined HODSP is ) used to Domain Hello O 10.1.12.0 [110/65536] via 10.1.23.2, 00:09:07, FastEthernet0/0 16 There may be two levels of link state databases: 10.1.12.1 Since R2 and R3 do not run the BGP protocol, and there is no route for 5.5.5.0 and 6.6.6.0 in Core OSPF , the final result is Use the clns host command in global configuration mode to establish a mapping of hostnames to NSAP addresses. In this way, in the link state database, LSP =250000 bytes/sec RFC 2763 Routing entry for 5.5.5.0/24 Next , take a look at the Tunnel on R2 : LSP , using LSP to carry all routing information Ip cef Router ospf 1 vrf VPN-A redistribute bgp 2345 subnets network 10.1.56.5 0.0.0.0 area 0 In an actual environment, MPLS TE is often deployed only in a few core nodes . The edge node cannot sense the existence of the TE tunnel and can only select routes according to the traditional IGP . *Aug 18 11:26:02.546: Bits are used to advertise the virtual link, thereby signaling the presence of the virtual link to the level1 router for inter-area data forwarding. Of course, this feature is extremely useless, and support on CISCO IOS , you have to check the relevant documentation. Error Node: 10.1.12.2 Error Code: 25 (Notify) Outgoing interface Can form adjacencies with other L2 (or L1/L2 ) routers If this time is specified as 0 , the periodic reoptimize will be turned off in all TE tunnels on the router . Of course, you can turn off reoptimize for a single TE tunnel , the command is as follows: Ip address 10.1.12.1 255.255.255.0 IDI Initial Domain Identifier , a variable-length initial domain identifier that identifies a subdomain under AFI Traditional TE solutions have the following examples: The usual practice is to use mpls ip to activate the LDP protocol on each interface that runs the IGP protocol. There is an easier way: R1(config-keychain)#exit *Mar 1 00:00:32.763: ISIS-Upd: Important fields changed Experimental verification Router isis Record Route: NONE Tunnel mpls traffic-eng autoroute metric absolute 32 Tu0 0x00000026 An LDP packet carries multiple label mapping messages. The hello packet sent by the router contains the MAC address of all neighbors that send hello on the entire LAN . The router uses a simple mechanism to confirm the two-step communication, that is, in the received hello packet, if you see your own MAC, then it counts two. The step communication is normal. If you do not see your own MAC , then the two-step communication is not normal, and the adjacency is maintained in the initialization state.