cisco ccna networking

cisco ccna networking

102 Tunnel mpls traffic-eng path-option 10 dynamic Interfaces: Use the following command to see the relevant information: NLPID that identifies the network layer protocol packet is a 8 -bit field, the IPv6 is NLPID value 142 ( 0x8E ). If the IS-IS router supports R1#show isis neighbors In this experimental test, we announced the direct-connected segments of R1-R5 and R4-R6 in OSPF . Only support IP Three-way handshake mechanism: Intermediate System to Intermediate System (IS-IS) Cryptographic Authentication *Aug 18 09:06:07.919: Tun Sender: 1.1.1.1 LSP ID: 247 When there is a problem with the path of R1-R2-R5 , for example , the link between R2-R5 is DOWN , then the TE tunnel will switch to the path-option of the next priority , that is, the dynamic setting mode. Therefore, it will switch to R1-R3-R4-R5 . Kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF On CISCO IOS , I verified the packet authentication and found that domain authentication, IIH message, CSNP , and PSNP do not carry authentication information. value 0/0/0 Clns host RouterA 49.0001.1111.2222.3333.00 clns host RouterB 49.0001.4444.5555.6666.00 ! Ip address 2.2.2.2 255.255.255.0 ip router isis Admin: up Ip address 10.1.45.5 255.255.255.0 ! The fields of the same background color described above are all corresponding. 10.1.23.3 [MPLS: Labels 300/403 Exp 0] 0 msec 4 msec 0 msec Mpls traffic-eng tunnels ip rsvp bandwidth The configuration of R3 is as follows: Then show it: Test 1 : set-overload-bit *Aug 18 09:06:07.919: version:1 flags:0000 cksum:0000 ttl:255 reserved:0 length:232 1 10.1.12.2 12 msec 4 msec 4 msec Configure the requested bandwidth of the tunnel 303 *Aug 18 11:26:02.546: SESSION The label mapping message that is advertised locally is meaningful to the global . The labels corresponding to the same FEC advertised from different interfaces are the same. CSPF ( Constrained Shortest Path First ) SPF algorithm with constraints PUSH is also similarly understood, only for top-level label operations, first the inbound top-level label TTL249 is first decremented by 1 , then the newly pushed label header TTL Brief introduction to the work process 4.4.4.4/32 Mpls traffic-eng tunnels mpls label range 200 299 Known via "isis", distance 115, metric 168, type inter area 5.5.5.5/32, version 22, epoch 0,cisco ccna networking, cached adjacency 10.1.34.3 0 kbits/sec Interface Overload 42000 Interface fast0/0 The principle is similar to the plaintext interface authentication, but can be given HMAC-MD5 certification. The bandwidth information that MPLS TE needs to advertise is: The IETF 's draft-ietf-isis-ipv6-05.txt specifies what IS-IS adds to support IPv6 . It is mainly a newly added two TLVs ( Type-Length-Values ) supporting IPv6 routing information and a new NLPID ( Network Layer Protocol Identifier ). IS-IS is not like RIP and OSPF . These two protocols have separate versions of RIPng and OSPFv3 support IPv6 . MPLS TE Config Parameters: Router ospf 1 Interface eth 0/1 The configuration of R1 is as follows: The configuration of R2 is as follows (all configurations are omitted from the configuration of interface IP ): AutoRoute Fa0/0 Routing information diffusion and database synchronization I/E The configuration of R1 is as follows: IS-IS Level-1 Link State Database: 4.4.4.4/32, version 12, epoch 0, cached adjacency 10.1.12.2 1.0.0.0/24 is subnetted, 1 subnets R5 is also similar: *Aug 18 09:06:02.699: 5.5.5.5 (Strict IPv4 Prefix, 8 bytes, /32) Activate the LDP after each router and bundled into a routing prefix assigned its own local routing table tags, such as the figure of X routing, all routers will itself as X assign a label route, then for X bundle routing labels save In the local LIB table. Subsequently, all LDP routers send their own labels for the bundled labels to their LDP neighbors.