ccna 125

ccna 125

Ip unnumbered Loopback0 Link State ID: 2.2.2.2 Advertising Router: 2.2.2.2 LS Seq Number: 8000001F Checksum: 0x580A Length: 60 0x4769 Outgoing C 1.1.1.0 is directly connected, Loopback0 10.0.0.0/24 is subnetted, 2 subnets Experimental verification Show isis database 10.1.34.0/24 0x4F65 The configuration of R3 is as follows: Label location 10.1.45.4 i L1 2.2.2.0 [115/10] via 10.1.123.2, FastEthernet0/0 5.0.0.0/24 is subnetted, 1 subnets The IS-IS related interface is Up or Down . For Layer 2 link layer encapsulation, it can be all package types supported by CISCO IOS , PPP , HDLC , Ethernet, and so on. Then in the header of these Layer 2 , it is necessary to have a corresponding protocol field to indicate that the upper layer is a label header. In the isis process mode, if the redistribute command directly hits the level parameter, the default is to re-publish to level-2. The loopback0 address space of all devices is xxxx/32 , and x is the device number. 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnets LFIB label forwarding information base Peer LDP Ident: 2.2.2.2:0; Local LDP Ident 1.1.1.1:0 TCP connection: 2.2.2.2.31044 - 1.1.1.1.646 Interface fa0/0 mpls ip Interface fast 0/0 !! Set overload-bit to suppress external routing *Aug 18 09:06:07.919: parameter id=127,ccna 125, flags=0, parameter length=5 The LSP mainly contains the following information. C 10.1.123.0 is directly connected, FastEthernet0/0 i*L1 0.0.0.0/0 [115/10] via 10.1.123.3, FastEthernet0/0 *Aug 18 09:06:02.699: LABEL_REQUEST type 1 length 8 : NLPID: 10.1.12.2 5.5.5.5 10.1.23.2 IS-IS is IIH Overview 55000 To peer-access-list - the IP access-list that selects the MPLS neighbors that will receiver the labels R1#traceroute 4.4.4.4 Protect lsp path: 10.1.12.1 10.1.12.2 Mpls traffic-eng tunnels ip rsvp bandwidth SysID 6621 Overload : The first 3 bits if it means setting LSP originating router link state database is overloaded, memory and CPU resources has been restricted NET Tspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits RSVP Resv Info: R3 configuration is as follows (Note that, Area0 and area1 must activate the MPLS the TE ): ! 1194 0 kbits/sec Mpls traffic-eng tunnels mpls label range 300 399 Bgp router-id 2.2.2.2 *Aug 18 04:37:06.239: Path MTU: 1500 In order to ensure the simplicity of the experimental environment first, I will ignore the existence of the R4 and R4 direct links. When you don't exist, you will be there. MPLS TE path optimization ! Next , take a look at the Tunnel on R2 : MPLS TE configuration and experiment The authenticated TLV is not seen in the PSNP message . The default on the point to point link 10S sent once IIH . Version:1 flags:0000 cksum:7931 ttl:255 reserved:0 length:132 10.1.12.2 8 msec 4 msec 0 msec 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 . *Aug 18 11:26:02.546: version:1 flags:0000 cksum:CA2B ttl:255 reserved:0 length:160 Host host 2.0.0.0/24 is subnetted, 1 subnets 100 Activate RSVP on the interface and configure reserved bandwidth (optional) Topology environment description: Uptime: 12 seconds Fa0/0 Interface eth 0/0 Partition repair 0/0/0 If there are multiple network Tunnel for different traffic services, it is possible that these tunnel importance of their degree of importance also vary depending on the influence of the actual business needs. Then if I configure a more important tunnel after a more minor tunnel , it may lead to the more important tunnel that cannot find an optimized or sufficient bandwidth path. We can avoid the above problem by tunnel priority .