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0x80000005 0x0067EF 0 MPLS and Tag switching TE metric: 1 Experimental procedure Mpls traffic-eng reoptimize events link-up For the LAN interface, a 1- byte circuit ID is appended to the 6- byte SysID of the specified intermediate system ( DIS ) to form a 7- word. Type 10 flooding range only in this area IS reachability I mentioned the four metric types of IS-IS . The bits that can be used in each metric are the lower 6 bits. That is to say, the maximum interface metric is 63. We propose several new TLVs to make up for this defect. Bandwidth change *Aug 18 11:31:44.598: router Mpls ldp router-id interface [force] Interface fast 0/0 Interface tunnel0 Ip ospf cost 1 772 The loopback0 address space of all devices is xxxx/32 , and x is the device number. MPLS does not assign labels to BGP routes, but assigns labels to the next hop of BGP routes. IS-type ID: path option 10 [1] OutLabel : Ethernet0/1, 305 Tunnel mpls traffic-eng path-option 10 dynamic Router ospf 1 Bw[6]: Ip address 10.1.45.5 255.255.255.0 Is-type level-1 metric-style wide RSVP Signalling Info: Here are some examples of FEC : Interface Loopback0 Overview of the label assignment process Network 3.3.3.3 0.0.0.0 area 0 Mpls traffic-eng tunnels mpls label range 200 299 ! R1#sh ip os mpls ldp interface fa0/0 *Aug 18 11:31:44.598: NNHop ( Next-Next Hop Router ): Next hop router, next hop of the PLR next hop router OutLabel : FastEthernet1/0, 301 Otherwise, the interface may be considered in MPLS-LDP Discovery Transport interface address , the Transport Address configured as Direct interface IP address. IS-IS and ES-IS do not place routing information in IP or CLNP packets, but directly in the data link layer Frame (so that packaging is more efficient). *Aug 18 09:06:07.919: SENDER_TEMPLATE type 7 length 12: After the basic configuration is completed, since R2 and R3 are L1\L2 routers , for both of them, they will advertise themselves to the local level1 area as a way to go out , by setting ATT in the LSP generated by themselves . we R1 point of view isis database has been able to see out. R1#show isis database The debug information on R1 is as follows: Interface Ethernet0/0 Ip router isis interface Serial0/0 906 Interface eth0/0 IS reachability AutoBandwidth It can be seen that we allocated 33M bandwidth for the tunnel with priority 6. The total reserved bandwidth of the original interface is 75M , and it is divided into 33M , so there is 42M . We can also see because we have modified the priority. The reservable bandwidth of the tunnel of level 6 is therefore lower, and the reserved bandwidth is also changed. Tunnel mpls traffic-eng autoroute announce tunnel mpls traffic-eng priority 7 7 Type 2 length 48: Lan interface MAC address IS-IS extensions for Traffic Engineering Network 10.1.12.1 0.0.0.0 area 0 5.5.5.5/32 LDP and IGP synchronization Packets with the same processing mode according to the process or IP DSCP field Event caused reoptimize *Aug 18 04:37:06.239: ADSPEC type 2 length 48: The IS-IS packets have the same common 8B above , and the additional header fields are different, and then the TLV field. At the time of packet capture , the ternary in the TLV : type, length, variable length content, type and length in the packet, the packet capture software may not be presented, but the type and length can be found from the binary code of the packet capture result. content. Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 521 RSVP Path Info: 10.1.34.0/24 [110/20] via 10.1.23.3, 00:00:01, Ethernet0/1 Router(config-router)#mpls traffic-eng area x 3 A value of 0 indicates that the maximum number of three area addresses is supported . By default, the value is 0 , and the actual value is in the range of 1-254 . (Tunnel0) Destination: 5.5.5.5 Of course, the above method is not safe. Therefore, in special cases, we may want the L1\L2 router to conditionally set the ATT bit and set it more controllable. Then we can associate the route-map and match a specific one in the route-map . Routing, as long as this route is in my routing table, route-map is satisfied,pass ccna, I will set ATT . In OSI terminology, a host (such as a PC ) is called an ES (end system) and a router is called an IS (intermediate system). ES-IS can be said to be a "language" or routing protocol between an end system and a router. It is used to enable the end system and router on the same network segment or link to discover each other and allow the ES to learn its network layer address.