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Such as in a frame relay environment LSP Seq Num LSP Checksum LSP Holdtime 1/0/0 Mpls traffic-eng tunnels ip rsvp bandwidth The router uses PSNP to acknowledge multiple LSPs on the point-to-point link (the next one in the middle) Bytes tag switched Default metric is supported by all IS-IS routers and is often interpreted as a measure that is inversely proportional to bandwidth. Tib entry: 1.1.1.1/32, rev 2 We see the above output, R1 , R2 , R3 all generate LSP , and the asterisk entry is issued by R1 itself. In addition, there is a special *Aug 18 09:06:02.699: average rate=250000 bytes/sec, burst depth=1000 bytes !! Specify the range of local tags, this can be a great convenience in the experiment *Aug 18 09:06:07.919: SESSION_ATTRIBUTE type 7 length 16: LFIB label forwarding information base IS-IS basic module Two addresses are configured on the R5 interface: 10.1.35.5 and 10.1.35.55 to simulate two different source hosts. Explicit Route: 10.1.12.2 10.1.23.2 10.1.23.3 10.1.34.3 Looking at the above topology, we need to establish a TE tunnel between R1 and R5 . Under normal network conditions, we want the tunnel path to be R1-R2-R5 , which is an explicit specified path. In order to make the tunnel path have a backup, we can define a path-option , this path uses the dynamic setting method, let CSPF calculate it by itself, then the configuration is as above. Neighbor 5.5.5.5 update-source Loopback0 Router(config-if)#tunnel mpls traffic-eng priority 6 6 10.1.12.2 [MPLS: Label 200 Exp 0] 4 msec 0 msec 0 msec ! 104 Router ospf 1 0 interfaces: R1#show isis database verbose R1.00-00 75000 Ip prefix-list test seq 5 permit 5.5.5.0/24 route-map test permit 10 Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 0, Tun_Instance 2 RSVP Path Info: *Aug 18 09:06:07.919: ADSPEC type 2 length 48: Configure on R2 as follows: Prefix Mpls traffic-eng tunnels mpls ip General Parameters break bit=0 service length=8 Perform routing protocol functions in the routing domain This will cause the route of R2 to change. The outgoing interface of the route to 5.5.5.5 and 55.55.55.55 becomes e0/1 . So R2 goes to Mpls ldp router-id loopback0 mpls label range 100 199 interface fast0/0 0x1B7C ! TE Metric Bytes tag switched MPLS TE using type 10 of LSA to a region within MPLS TE work. L1 (inside the area) and L2 (in the area) LS age: 705 10.1.23.2 10.1.23.3 Link connected to: another Router (point-to-point) (Link ID) Neighboring Router ID: 5.5.5.5 R3.01-00 Device Internet segment 10.1.xy.0 / 24 , where xy is the device number, X small y large Test . 5 : SET 'bit-overload-the suppress interlevel MPLS relies on IP routing and CEF switching Interface loopback0 Manually reoptimize It is found that a targeted session is established between R1-R3 . Now, let's come back to the Fa1/0 port of shutdown R1 . Fa0/0 Ip cef Ip address 10.1.45.4 255.255.255.0 Exit Note: To use the above command to complete conditional notifications, you need to use no mpls ldp advertise-labels first . Otherwise, the LSR advertises all label bindings. RSVP If the payload of the MPLS is not an IPv4 packet or an IPv6 packet, load balancing is performed by viewing the value of the bottom label. 1.3 OSI protocol stack terminology Interface Ethernet0/0 Label Tunnel mpls traffic-eng autoroute announce tunnel mpls traffic-eng priority 7 7 Interface eth 0/1 Show mpls ldp parameters Protocol version: 1 There is a difference between the two Type-10 Opaque Link Area Link States (Area 0) The configuration of R1 is as follows: TE headend router tunneling according TE calculated database TE optimal path of the tunnel, and with reference to the bandwidth constraints. In addition, the optimal path can also be defined by an explicit path option that the user configures on the tunnel interface. In either case, the headend router knows the specific path used by the TE tunnel. Ip cef 1.1.1.1/32 FRR intf/label Tunnel mpls traffic-eng path-option 10 explicit name R2R4R5 Pop tag Configuration command Router(config-router)#mpls traffic-eng area x Affinity: 0x00000000 Holding timer : Hold time, default 30S ! Level2 : Backbone , a collection of consecutive L2 routers (including L1/L2 router ); Backbone is made up of all L2s (including L1/L2) The current maximum available bandwidth is listed under the interface according to their respective priorities. Data plane : Data forwarding based on tags TTL-propagate Attribute Flags: 0x00000000 Complete basic IP configuration (configuration omitted) Requirements for IGP *Aug 18 09:06:07.919: Path Protection Interface Serial0/0 * 10.1.123.2, from 2.2.2.2, via FastEthernet0/0 Fa1/0 *Aug 18 11:26:02.546: Then R1 will use the IGP of Metric , and ignore R2 on the configuration of the physical interface adminnitration-weight ,certification dumps website, so after the entry into force of the above command, go R1 view on the tunnel 's path weight , it turned into a 3 . Or Tunnel Id *Aug 18 04:37:06.239: Tun Dest: 5.5.5.5 Tun ID: 0 Ext Tun ID: 1.1.1.1 LSP Seq Num LSP Checksum LSP Holdtime LSP ( LinkState Protocol Data Unit ) format 0x18B7 !! Only one interface activates MPLS TE DIS *Aug 18 09:06:02.699: IS Hops:1 Interface fas0/0 Router ospf 1 Network 10.1.23.2 0.0.0.0 area 0 L1/L2 router , which holds two independent LSPDs . The Layer 1 and Layer 2 routing processes are running at the same time . At a layer LSDB maintains the first in a layer LSP information simultaneously to other L1 router advertisement which is an outlet of the region (the L1 router to form a default route one point to the area border routers according to this announcement); it support of two layers function in the trunk with the other router communication, independent of the first and maintains a layer LSDB of 2 layer topology database.