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  • !! TE tunnel Can use the default or use this command to modify Router(config-if)# bandwidth ? This global command is used to modify it. After the expiration of the timer, the IGP will establish an adjacency on the link. Once the IGP adjacency is established and the LDP session has not been synchronized, the IGP will advertise the metric of the link to the maximum. Nexthop 10.1.12.2 FastEthernet0/0 label 204 304 In the SWAP process, after the label is exchanged, the inbound label TTL -1 is then copied to the outbound label TTL . Configuring multiple NETs for a single IS-IS process My Address: 10.1.12.1 Ip cef *Aug 18 09:06:02.699: SENDER_TEMPLATE type 7 length 12: Mpls ip 3.3.3.3/32 Targeted Hello 1.1.1.1 -> 3.3.3.3, active, passive *Aug 18 11:31:44.598: So using this feature (an IS-IS process to configure multiple NET addresses), you can achieve: 0 kbits/sec R2 (config-keychain-key)#key-string cisco R2 (config-keychain-key)#exit 5.5.5.5 [110/31] via 10.1.23.3, 00:03:44, Ethernet0/1 Labels 0-15 are all reserved labels. Here are some reserved tags that have a specific role: The interface IP of R3 is 10.1.23.3 . AutoRoute metric *Aug 18 11:31:44.598: Config Parameters: Tun Dest: Distribution mode : Label Distribution [115/20] via 10.1.24.2, Serial0/0 On the R3 , as shown in the figure, the R3 local routing table does not need a default route, and an IS-IS default route can be generated and passed to Downstream on-demand mode : Downstream On Demand Interface eth 0/0 In the LAN , SNPA refers to the MAC address. 0 kbits/sec Static Routing Static Route 10.1.12.2 Ip address 10.1.12.2 255.255.255.0 Now the initial environment, R1 can learn inter-area routes, and R2 locally re - routes to level 1 route 2.2.2.0 . Of course, since R2 sets the attached-bit , R1 also generates a default route to R2 . Mpls ip interface fast1/0 ! 3.3.3.3/32 103 i ia 10.1.24.0 [115/148] via 10.1.123.2, FastEthernet0/0 i ia 10.1.45.0 [115/158] via 10.1.123.2, FastEthernet0/0 i ia 10.1.34.0 [115/158] via 10.1.123.2 ,ccna 1 exam, FastEthernet0/0 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 View bandwidth's Thresholds Finally, the path of the second TE tunnel is as follows: The last byte of the NSAP is used to identify the program on the same device, similar *Aug 18 04:37:06.239: ADSPEC type 2 length 48: View MPLS forwarding table ( LFIB ) This global command is used to modify it. After the expiration of the timer, the IGP will establish an adjacency on the link. Once the IGP adjacency is established and the LDP session has not been synchronized, the IGP will advertise the metric of the link to the maximum. The PATH message carries a label request object, which is hopped and hopped from the tunnel first-end router to the tail router. 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. AutoRoute metric Admin: up Oper: up Path: valid Signalling: connected path option 10, type explicit R2R4R5 (Basis for Setup, path weight 30) The Level 2 LSP contains all the prefix information that may be reached in IS-IS . Level1 LSP is only used in the local area. Checksum: 0x6FEB Length: 132 Modify ldp holdtime , default 15S Pop tag Router(cfg-ip-expl-path)#next-address 10.1.12.2 !! Note the input order Mpls traffic-eng tunnels mpls label range 500 599 Mainly contains TE tunnel bandwidth request Can form adjacencies with other L2 (or L1/L2 ) routers L2 router , connected to different Leve1 area . Stores a separate Level2 LSDB . PSNP Mpls traffic-eng tunnels mpls ip Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 Net 49.0001.0000.0000.0002.00 We saw R4 assigned to the LDP label 403 with the prefix 5.5.5.5/32 in the LFIB table of R2 . (The router address and link information in the result of capturing the packet are respectively). Explicit Route: 10.1.12.2 10.1.23.2 10.1.23.3 10.1.34.3 MPLS LDP-IGP synchronization can be used to solve this problem. Note that the MPLS LDP-IGP solution cannot be used for BGP label distribution. 5.0.0.0/24 is subnetted, 1 subnets Ip cef Mpls ldp router-id loopback0 mpls label range 100 199 interface fast0/0 *Aug 18 09:06:02.699: HOP type 1 length 12: Mpls traffic-eng tunnels ip rsvp bandwidth R2 redistributed direct route 2.2.2.0 is gone, inter-area route is still, and R1 no longer uses R2 as the next hop of the default route. Note that the LSP sent by R2 is also overload-bit set. . Experimental configuration Type escape sequence to abort. Tracing the route to 5.5.5.5 IS-IS router advertisements contain direct neighbors and routing information TLVs . *Aug 18 04:37:06.239: version=0 length in words=10 A value of 0 indicates that the maximum number of three area addresses is supported . By default, the value is 0 , and the actual value is in the range of 1-254 . Mpls traffic-eng tunnels ip rsvp bandwidth Available bandwidth Physical_bw: 100000 (kbps), max_reservable_bw_global: 75000 (kbps) Network 10.1.12.2 0.0.0.0 area 0 [Note] If the router receives a tagged packet and the top tag cannot be found in the local LFIB , the CISCO IOS will discard it. Ip address 10.1.45.4 255.255.255.0 Router ospf 1 Ip cef Next we R3 and R5 activate the forwarding adjacency, then R3 and R5 will be advertised in this region of the Tunnel- ( L in the manner of direct links). *Aug 18 11:31:44.598: End System terminal system Regional information No output feature configured R2 . But why? The reason is that the label assigned by R2 to route 10.1.12.0 is PoP , because 12.0 is the directly connected network segment of R2 , and there is a second-end hop pop-up mechanism. Then this IP packet is R2 to stop the meal , because R2 does not have 6.6.6.6 and 5.5.5.5 routing. How to do? It also accepts and understands the interpretation of LSPs carrying TLV22 and TLV135 . ! 3 10.1.23.2 [MPLS: Label 203 Exp 0] 964 msec 1124 msec 1008 msec In the explicit setup mode, we must specify the router that the TE tunnel needs to traverse. You can specify the TE of the router in the link. ! Ip cef Tunnel mpls traffic-eng bandwidth 60000 1096 Ip address 10.1.34.3 255.255.255.0 Then R1 will use the IGP of Metric , and ignore R2 on the configuration of the physical interface adminnitration-weight , so after the entry into force of the above command, go R1 view on the tunnel 's path weight , it turned into a 3 . MAX.Areas maximum area address. Indicates how many different zone prefixes we can configure for a router. value Time since created: 10 minutes, 5 seconds Time since path change: 9 minutes, 49 seconds Level2 area default route ! Device Internet segment 10.1.xy.0 / 24 , where xy is the device number, X small y large The LSP is set by ATT . Take R2 as an example. If the S1/0 port of R2 is DOWN , it loses the connection of Backbone , so R2 Pop Label Frame-relay map clns 103 broadcast no frame-relay inverse-arp *Aug 18 09:06:07.919: average rate=250000 bytes/sec, burst depth=1000 bytes RSVP Link state ID Next, we do the following configuration in the tunnel of R1 : Protction the Node (Node Protection) 10.1.34.4 10.1.45.4 10.1.45.5 5.5.5.5 TLV Mpls traffic-eng tunnels mpls label range 300 399 Link connected to: a Transit Network 204 200 *Aug 18 09:06:07.919: Tun Dest: 5.5.5.5 Tun ID: 0 Ext Tun ID: 1.1.1.1 R1(config-if)#isis authentication key-chain test level-1 R1(config-if)#isis authentication mode md5 level-1 Types of *Aug 18 11:31:44.598: ! 10.1.12.0/24 3.3.3.3 *Aug 18 11:31:44.598: Nodes level and area level My Address: 10.1.12.1 If the payload of the MPLS is an IPv6 packet, the load balancing is performed according to the source and destination addresses in the IPv6 header. When using the Explicit method to establish a tunnel , you need to associate an explicit path . *Aug 18 11:26:02.546: Path option 10, type dynamic (Basis for Setup, path weight 3) It can be seen that we allocated 33M bandwidth for the tunnel with priority 6. The total reserved bandwidth of the original interface is 75M , and it is divided into 33M , so there is 42M . We can also see because we have modified the priority. The reservable bandwidth of the tunnel of level 6 is therefore lower, and the reserved bandwidth is also changed. After receiving the label from the tail router, the penultimate hop router uses the label as the outbound label of the TE tunnel , and assigns a label to the tunnel and places the label in the label object in the RESV message. Send it to its own upstream router. Next, the data is sent to R3 . After R3 checks its own LFIB table, it replaces the 303 tag with 203 and then throws it to the next hop R2 . After receiving the label package, R2 looks at its own LFIB table and finds that the outgoing action is a PoP . Then the label is ejected and becomes the original IP packet, and then it is thrown to R1 . Finally, R1 forwards the IP packet to R5 . So why is R2 here PoP here ? The answer is that this BGP routing, we talked about earlier, in fact, it is using a next hop 10.1.15.0 label, 10.1.15.0 is R1 directly connected network segment, so the R1 when the label assigned to the route , gave it aPoP , then distribute this result to R2 , which is why.

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

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Here is the most accurate CISCO CCIE WRITTEN exam questions and answers. All study materials need to be carefully selected by professional certification experts to ensure that you spend the least amount of money, time, and pass the high quality exam. There is also a professional service team that can customize your study plan for you to answer all your questions, PASSHOT's CCIE Written Dumps is definitely the biggest boost for you to test CCIE that helping you pass any Cisco exam at one time.

CCNA Routing & Switching Written Exam

Exam Number : 200-125 CCNA

Associated Certification : CCNA Routing & Switching

Duration : 75 minutes (55 - 65 questions)

Available Languages: English, Japanese


NOTE: This exam tests a candidate's knowledge and skills related to: Network fundamentals, LAN switching technologies, IPv4 and IPv6 routing technologies, WAN technologies, Infrastructure services, Infrastructure security, Infrastructure management.

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