cisco ccna practice tests free download

cisco ccna practice tests free download

Interface fast0/0 On C , first look up the LFIB table and find that the label is to be popped up, so it will pop up the label and pop up and find it is an IP packet, so go check FIB again. *Aug 18 09:06:02.699: peak rate =250000 bytes/sec Broadcast network If the LSR receives an IP packet, check the FIB table. Assume that the FIB ( CEF table) related entries are output as follows: According to the protection object can be divided into: 100 Once the router receives the IIH , it checks the adjacency of the sender of the hello packet. If the adjacency has been established, the adjacency is reset. Connection TCP: 2.2.2.2.31044 - 1.1.1.1.646 , indicates that the LDP connection is built on TCP 's 1.1.1.1 source port 646 , to the destination 2.2.2.2 of 31044 ports. Because the 2.2.2.2 address is large, it is the initiator. [7]: 55000 kbits/sec MPLS TE configuration needs to use the width value Local Mpls traffic-eng tunnels ip rsvp bandwidth ! 10.1.12.2 !! set overload-bit Interface eth 0/1 Wait for the message to view the adjacency. Next,cisco ccna practice tests free download, the DIS election process begins . For all practical applications, IS-IS only supports broadcast and point-to-point links. The NBMA link is not supported . In the NBMA environment, it can be equipped Ip address 10.1.23.2 255.255.255.0 Router(config)# mpls ldp advertise-labels [for prefix-access-list [to peer-access-list ] ] There are four metric types: ISO 10589 requires that the hello data be padded to the MTU size of the output interface , which means that the same MTU is usually used at both ends of the adjacency relationship. There is a difference between the two Path removal Interface fa1/0 Therefore, R1 will only use R4 's label mapping for 3.3.3.3 , that is, use label 404 to send the label packet to 3.3.3.3 . Certification Information Keep priority Ip router isis router isis Since the IP packet is generated on the initial router, the CEF table is searched . With the " show ip cef detail " command, you can see from the output whether the route is pushed into the label. The distribution label is based on The prefix in the CEF table is assigned. R3#show mpls forwarding-table LSPID Config Parameters: ! Each tag mapping message contains two elements : FEC TLV and Label TLV 0 kbits/sec Both interfaces: 1 interface: IS-IS allows the entire domain to be divided into multiple zones, using a two-level hierarchical structure. i L2 2.2.2.0 [115/20] via 10.1.24.2, Serial0/0 Activate the MPLS TE tunnel feature on the interface. 55.55.55.55 [110/31] via 10.1.23.3, 00:02:29, Ethernet0/1 Mpls ldp igp sync holddown 5000 Ip address 10.1.123.2 255.255.255.0 Route-target import 2345:2 10.1.12.2 Similar to the concept of DR in OSPF 0 kbits/sec IS-IS only supports reliable diffusion on point-to-point links, and the spread on the broadcast link is unreliable. However, periodic broadcasts through DIS Modify the configuration of R2 : Consider in detail the details of the adjacency relationship establishment process: Explicit_route 104 301 Show ip cef detail Show tcp brief IS-IS supports ISO connectionless network environment, pay attention to the data link is The configuration of R1 is as follows: Network Next Hop In label/Out label RFC 3847 Mpls ldp neighbor 3.3.3.3 targeted ldp R3.02 MPLS TE Router ID: 2.2.2.2 Each IP prefix is ​​assigned a bunch of metrics . Route summarization must be performed on the originating router of the L2 route, otherwise invalid If this time is specified as 0 , the periodic reoptimize will be turned off in all TE tunnels on the router . Of course, you can turn off reoptimize for a single TE tunnel , the command is as follows: 10.1.23.2 Set-overload-bit suppress interlevel external The table eventually forwards this IP packet. C made two searches. This reduces forwarding efficiency. IS-IS by Hello PDU padding size to the interface MTU large Net 49.0001.0000.0000.0002.00 300 The configuration of R4 is modified as follows: IS-IS Hello message ( IIH PDU ) Moreover, since the default duration is indefinite, these entries will remain. Of course, if you modify the configuration on R1 : Verify view 4.4.4.4 Device Internet segment 10.1.xy.0 / 24 , where xy is the device number, X small y large Document number * 10.1.123.2, from 2.2.2.2, via FastEthernet0/0 Reservable Bandwidth[0]: Type 1 length 52: Signalling: connected Different TLV field values ​​can be included in the LSP to advertise various different routing information. Interface fast1/0 Network 10.1.23.3 0.0.0.0 area 0 RFC 3358 Cross-region TE Tunnel ( OSPF ) Regional separation (See Why is CEF remember?), Was found to give the packet label press, then press it on the label head, the label value 201 , then the next hop is B , which is sent to B . Then B receives the label package and finds that the label field in the label header is 201 , so I look at my own LFIB and find that the outgoing label of the 201 label is 301 and the next hop is C , so it replaces the 201 label with 301 , and then pays to C .