1000 ccna certification exam preparation questions and answers free download

1000 ccna certification exam preparation questions and answers free download

The forwarding of IP packets in each hop router is based only on the destination address. ISIS default flooding period is 15 minutes by lsp-refresh-interval Review Routing domain Switched This state has three values: down , init , up Router ospf 1 Ip address 10.1.34.4 255.255.255.0 O 3.3.3.3 [110/3] via 10.1.12.2 , 00:00:37, FastEthernet0/0 Related standards: Support tag distribution in DoD ( Downstream-on-Demand ) mode IS-IS Adjacency related packets debugging is on R1# But in the CSPF algorithm, there can only be one path for a destination. When there are many paths that satisfy the basic conditions (this rule can only be made if TE metric , bandwidth, and related attributes cannot be decided): Ip address 10.1.123.1 255.255.255.0 Some guidelines for assigning NET : 0/0/0 Interface eth 0/0 Verify that you receive the LDP Hello from the other party. Local tag: 104 In the Level1 link state database. Each zone in the IS-IS domain has a unique Level1 link state database. The shortest path is calculated by the SPF algorithm. State Changed: 00:20:27 Information, as shown below: By default, TE metric is used as the basis for calculating the shortest path of a TE tunnel. 0x0000000D OO Achieve reliability 2 Router-id 3.3.3.3 Ip unnumbered Loopback0 tunnel mode mpls traffic-eng tunnel destination 4.4.4.4 Not supported yet 1.1.1.1/32 6B is systemID + 1B of PSN ID 300 Rational use of network resources 1.0.0.2 Ip access-list standard accept-ldp permit 1.1.1.1 Debug information on R1 Mpls traffic-eng tunnels ip rsvp bandwidth Prefix Domain-password Ip router isis Three types of TLS have been added to the extended IS-IS for TS : Mpls ldp router-id loopback0 mpls label range 300 399 interface fast0/0 i L1 2.2.2.0 [115/10] via 10.1.123.2, FastEthernet0/0 5.0.0.0/24 is subnetted,1000 ccna certification exam preparation questions and answers free download, 1 subnets Now, shut down the e0/1 port of R2 . ! It can prevent the structure of the core transmission network from being exposed due to TTL=0 return error message 1.0.0.0/24 is subnetted, 1 subnets The maximum reservable bandwidth is obviously the bandwidth that can be used by the TE in the link. It can be configured through the ip rsvp bandwidth command. Name: R1_t0 Status: In fact, this is a metric trick, but when we are thinking about it, remember to take the virtual path of the tunnel into consideration. Local tag: 104 A label switch router (LSR) 2 The interface of each router activates RSVP and MPLS TE tunnel support. *Aug 18 04:37:06.239: Minimum Path Bandwidth (bytes/sec): 1250000 Tunnel priority 0x0000000C Configuring multiple NETs for a single IS-IS process 33M 201 Static hostname mapping !! set overload-bit Ip cef 10.1.12.2 ! 10.1.12.2 8 msec 4 msec 0 msec By default, the OSPF hold time ( dead-interval ) is The establishment of an OSPF adjacency involves a more complex process. CSNP Removal Trigger: configuration changed Interface eth 0/0 The paragraph appears in the first paragraph. SystemID (DIS) : LAN ID . It consists of the SysID of DIS and a 1- byte pseudonode ID . The LAN ID is used to distinguish the same one. Although the L1 / L2 router having both L1 and L2 function, but sometimes simply Establishing a specific interface on a layer adjacent relationship, are arranged on the other interfaces in the first 2 layers adjacent relationship. The configuration of R1 is as follows: *Aug 18 09:06:07.919: TLV Local tag: 104 ! 10.1.35.55 -> 1.1.1.1 : FastEthernet0/0 (next hop 10.1.23.2) Remote binding: tsr: 2.2.2.2:0, tag: 201 Support for diagnosis of LSP tunnel 0x4769 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 . Ciphertext interface authentication 100 . An MP-iBGP connection is established between R2 and R5 . In the forwarding process, a set of data with the same processing mode can be identified by means of address, tunnel, COS, etc., usually in one set. Mpls traffic-eng tunnels ip rsvp bandwidth The configuration of R4 is as follows: ! Types of Opaque ID: 0 0180-C200-0015 MPLS TE router ID: 1.1.1.1 So now, we will change the loopback port address of R2 to 2.2.2.2/24 and change it to /24 to see what happens. Isis password cisco There seems to be no problem in this environment, but the route summary has problems in the point-to-point LSP environment, such as MPLS VPN , TE. Just throw the next hop of the traffic that meets the conditions to the tunnel interface. Next Hop The global configuration command metric-style transition allows the original narrow metric to be smoothly extended to a new width. This command allows a router to accept and transmit both narrow and wide quantities. O 959 Some guidelines for assigning NET : Network Services Access Points Regional separation FIB R4.00-00 We see that after the BGP neighbor relationship is up , R2 immediately triggers an LSP , and the overload is set before the LSP is cleared . Fa0/0 lab environment Link state messages are used to propagate link and node information in the area (describe the topology of the local network) Bytes Label Mpls traffic-eng tunnels ip rsvp bandwidth Priority 7 : 9375000 R5 configuration is as follows 10.1.34.4 R1#show mpls traffic-eng tunnels Mpls traffic-eng tunnels ip rsvp bandwidth Mpls traffic-eng tunnels ip rsvp bandwidth The IS-IS related interface is Up or Down . Mpls traffic-eng tunnels mpls label range 100 199 3.3.3.3/32 Network 10.1.12.2 0.0.0.0 area 0 Explicit Route: 10.1.12.2 10.1.23.2 10.1.23.3 10.1.34.3 Test the transmission process of the data stream, observe the phenomenon 301 Interface eth 0/1 Mpls traffic-eng tunnels ip rsvp bandwidth Fragment number : 0 R2.02 TE metric: 1, IGP metric: 1, attribute_flags: 0x0 The previously mentioned IS-IS , which only supports the CLNS network environment, does not support routing information exchange in the IP network environment. Later, the IETF in RFC 1195 are of IS-IS with modifications and extensions, called integrated IS-IS ( the Integrated IS-IS ) or dual- IS-IS ( Dual IS-IS ). Integrated IS-IS was developed to enable it to be applied to both TCP/IP networks and OSI networks, enabling it to provide dynamic routing information exchange for IP networks.