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ccna 1 final exam answers 2015 pdf

CCNA Routing And Switching 200-125 Written Dumps

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Exam Code: 200-125

Certification Provider: Cisco

Certification Exam Name:CCNA Routing & Switching

Update Date: Mar 28,2024

Free Cisco Written Dumps
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    ccna 1 final exam answers 2015 pdf

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  • Length 2.2.2.2 Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 31 RSVP Path Info: No output feature configured Router-id 4.4.4.4 !! The type of IS is level1 Next Hop The initial-backoff defaults to 15s and the maximum-backoff defaults to 120s . By default tunnel0 port cost = 1000 , we can tunnel interface cost modification is 1 ; then R1 is e0 / 1 port cost to R1#sh mpls for Use the lockdown keyword (note that the above configuration is configured in the TE tunnel port). Ip address 55.55.55.55 255.255.255.255 R1#show mpls ldp discovery detail Manually reoptimize ! Ip unnumbered loopback 0 tunnel destination 2.2.2.2 tunnel mode mpls traffic-eng Tag or VC Neighbor 10.1.24.4 remote-as 45 no auto-summary 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 IS-IS Level-2 Link State Database: Ip router isis This state has three values: down , init , up Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 The configuration of ip rsvp bandwidth R3 is as follows: MPLS is a CISCO proprietary protocol, later IETF borrowed, in IETF is called Tag Switching , can be understood as both a different name when enabled, the protocol used is not the same Interface eth0/1 1 17 DIS send HELLO interval ordinary packet router of 1/3 (default 3.3s ), which ensures DIS when a failure occurs can be more quickly found. IGP System ID: 2.2.2.2 *Aug 18 04:37:06.239: HOP type 1 length 12: Router isis Basic experiment ( NodeProtection ) Ip address 2.2.2.2 255.255.255.0 ip router isis *Aug 18 09:06:07.919: average rate=250000 bytes/sec, burst depth=1000 bytes Outgoing Network 10.1.45.4 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Network 1.1.1.1 0.0.0.0 area 0 If you want the penultimate hop router to recognize the "explicit empty tag" advertised by the tail router as "explicit empty tag", then you can LSP 1 Type 1 length 12: Mpls ip Local LDP Identifier: 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. *Aug 18 11:31:44.598: Ciphertext interface authentication Can see outbound PATH and inbound RESV messages First we look at R1 : ! Tunnel mpls traffic-eng path-option 10 dynamic Interface fas0/0 LDP inbound label binding filter *Aug 18 04:37:06.239: Tun Dest: 5.5.5.5 Tun ID: 0 Ext Tun ID: 1.1.1.1 *Aug 18 09:06:07.919: version:1 flags:0000 cksum:7A42 ttl:255 reserved:0 length:132 75000 Fa0/0 Link IP Address: 10.1.23.2 Of course, when deploying, we strongly recommend that the same tunnel should have the same priority and priority. At this time, TTL propagation can be turned off ( CISCO router is enabled by default) R1.00-00 Admin: up Oper: up Path: valid Signalling: connected path option 10, type explicit R2R4R5 (Basis for Setup, path weight 30) Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0,ccna 1 final exam answers 2015 pdf, Tun_Instance 521 RSVP Path Info: 10.1.23.0/24 Configuration example A targeted LDP neighbor relationship has been established with R4 . Mpls ip The configuration of R1 is as follows: Network 5.5.5.5 0.0.0.0 area 0 Auto-bw: disabled LSP Seq Num LSP Checksum LSP Holdtime 0 kbits/sec Mpls traffic-eng tunnels mpls label range 400 499 In a Frame Relay network, SNPA is DLCI 1 75000 *Aug 18 09:06:07.919: Hop Addr: 127.0.0.1 LIH: 0x00000000 Can use the default or use this command to modify Router(config-if)# bandwidth ? Subdivided into Area , roughly similar IP subnet Indicates whether the LSP is from L1 router or L2 router . This field is 2bits . 00- not used; 01-level1 ; 10- unused; 11-level2 Network 3.3.3.3 0.0.0.0 area 0 ( NLPID 0x81 ) and IP ( 0xCC ) ADV Router Backbone , so R2 can learn. At this time, I had a whimsy, and I made a level2 route to the level1 route re-release on R2 and found that In the cfg-ip-expl-path mode, you can also use the list keyword to view all the next-addresses that have been entered . Use index x next-address to specify the index number of each next- hop IP that has been entered . 1.1.1.1/32 Remote binding: tsr: 2.2.2.2:0, tag: 200 tib entry: 2.2.2.2/32, rev 4 Modify the configuration of R2 : IS-IS routers belong to only one specific area Route summary The tunnel configuration of R2 is modified as follows: Ip router isis encapsulation frame-relay Small to check if the MTU of both parties matches Interface loopback0 ISH is sent by IS to ES 301 My Address: 10.1.12.1 Calculated. In the figure above, the red path is calculated by CSPF . Path removal R4 routing table: MPLS VPN Architecture Volume 2 6B is systemID + 1B of PSN ID Network 10.1.34.3 0.0.0.0 area 0 System ID 6 -byte system ID , ES or IS identifier, similar to OSPF 's Router ID , each device has a system ID , and the IP network, each interface has an IP , which is the difference between one of . Note: The SystemID must be unique across the entire Area and trunk ( Level2 ). Ip address 10.1.34.4 255.255.255.0 10.1.56.0/24 !! Configure the is-type of the device , the default is level1-2 ! Ip cef The default on the point to point link 10S sent once IIH . Router-id 6.6.6.6 In this way , we can exchange visits between 5.5.5.5 and 6.6.6.6 , on R6 . 55.55.55.55 and 5.5.5.5 will no longer take the tunnel . This TLV , in this way, provides a simple and reliable mechanism for advertising hostname information. As shown in the figure below, this is an LSP message: R4#sh mpls tr tun It is. At this moment: 55000 *Aug 18 04:37:06.239: Network 1.1.1.1 0.0.0.0 area 0 Tunnel mpls traffic-eng autoroute announce tunnel mpls traffic-eng priority 7 7 R2.00-00 Bw[4]: All tag mapping messages received locally from the neighbor are saved in the database. Since RSVP has been able to complete the task of label allocation, there is no need to activate the Label Distribution Protocol ( LDP ) on the interface . Mpls traffic-eng tunnels ip rsvp bandwidth Interface eth0/0 Address-family ipv4 vrf VPN-A no synchronization The PATH message is delivered from the headend router to the following router, then the next hop router will remove its own IP from the ERO . 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 . If the L1 / L2 router redistributed external routes to Level-1 , the Level1 area in you can learn the route, but R2 does not route injection Level2 area is Backbone of Tunnel destination 4.4.4.4 tunnel mode mpls traffic-eng There are two types of tunnel priorities: Opaque ID: 0 The tag value is 1 , and this tag can appear anywhere on the tag stack, except for the bottom of the stack. !! TE metric , the default is equal to the following IGP metric MTU problem Conservative mode : Conservative Retention Minimum Path Bandwidth (bytes/sec): 2147483647 Path Latency (microseconds): 0 Ip cef Ip unnumbered loopback 0 tunnel destination 5.5.5.5 tunnel mode mpls traffic-eng IS-IS packets can carry multiple TLVs with only one header, saving bandwidth 300 R3.00-00 R1#debug isis adj-packets R1#show mpls forwarding-table Create a TE tunnel on R1 , the path is R1-R2-R4-R5 , and create another backup tunnel path as R1-R2-R3-R4-R5 . This path is used as the backup tunnel of the former . Experiment 1 Network 10.1.24.2 0.0.0.0 area 0 The way to use static routing is of course the easiest, and the best control, but the scalability is too poor, if there are multiple tunnels, then configuration and maintenance is more troublesome. 1.1.1.1 If you still can't distinguish, choose one randomly. 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 Ip cef Finally, let's complete the configuration of R1 : *Aug 18 09:06:07.919: SENDER_TSPEC type 2 length 36: Min unit=0 bytes, max pkt size=2147483647 bytes Cisco Router 's ISO addressing basic concept R5 and R6 each announce their own Loopback route in the BGP process. Interface tunnel0 Fa0/0 R1#show ip cef 4.4.4.0 detail 4.4.4.0/24, epoch 0 Uptime: 9 minutes, 33 seconds Selection: reoptimation O With PHP's penultimate hop pop-up mechanism, C allocates POP labels for local direct-connected prefixes and advertises them to other LDP neighbors. For IP applications , 1 byte defines AFI in the NSAP address , at least 2 bytes defines the actual area information, 6 bytes defines the system ID and ! R1#show mpls forwarding-table Can I perform route summarization on the L1 router ? *Aug 18 09:06:07.919: Tun Sender: 1.1.1.1 LSP ID: 247 The labels constituting the LFIB may not be distributed by LDP , and the RSVP allocation label is used in the MPLS traffic engineering . In the MPLS VPN , *Aug 18 04:37:06.243: SESSION type 7 length 16: LSPID Ip address 10.1.23.3 255.255.255.0 Bytes tag switched *Aug 18 11:31:44.598: On the initial router, is it looking for FIB or LFIB ? Bytes Label Switched Ip unnumbered Loopback0 tunnel mode mpls traffic-eng tunnel destination 5.5.5.5 Options: (No TOS-capability, DC) LS Type: Router Links --------------- Keeping priority indicates how much weight a tunnel has, so that it can be preserved in the link; Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Ip rsvp bandwidth 75000 Mpls ldp router-id loopback0 mpls label range 300 399 interface fast0/0 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 traffic-eng tunnels ip rsvp bandwidth *Aug 18 09:06:07.919: !! The maximum reservable bandwidth is 75M Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 31 RSVP Path Info: 1.1.1.1 Finally choose the red path above because the TE metric of this path is smaller Local binding: tag: 100 !! TE tunnel The OSPF adjacency cannot be established, but R1 has only one available path to reach R2 , so OSPF adjacency is established unconditionally. At the same time, R1 and R2 will directly announce the 10.1.12.0/24 direct link, which will be advertised with the largest metric 65535 . The purpose of this is that if the network environment is a redundant link environment, then the metric of the link can be made the worst from the perspective of the IGP , so that the LDP path bypasses the link.

ccna 1 final exam answers 2015 pdf


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