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CISCO PT Simulation Experiment (14) router configuration for OSPF dynamic routingExperimental Purpose :Mastering the configuration method of OSPF dynamic route selection protocolMastering the OSPF route description in the routing
I. Background requirementsThe Cisco two switches need to be virtual into a single switch (similar to a switch stack), to link two-tier access switches, and to provide high availability of network links. Such as: For the two-layer switching 2960x needs to see the upper two n3k switches for a single device, the intermediate connection link does the link aggregation.Second, configuration detailed n3k_1 and
non-descending serial number in its group. This serial number can be used to prevent replay attacks. A replay attack is a packet that has been received by the target host. by occupying the resources of the receiving system, the attacker can fool the system. Replay attacks are often used to attack identity authentication. Replay attacks are one of hackers' favorite tools. 3. improve OSPF security through Cisco
1. Start the OSPF protocol To start the OSPF routing protocol on a CISCO router, two steps are generally required:1) Start the OSPF protocol process:Router (config) # router ospf 2) define the network of the vro:Router (config-router) # network The
RIP protocols can be configured in a more convenient way, but the limitations of RIP itself indicate that it is not suitable for medium to large networks. In contrast, OSPF is more complex to configure than RIP, but its functionality and performance are better than RIP.Configuration ideas1 Configure the physical interface address of the router Xia Lian switch and the physical interface address of the router to the other router and open the port2 Confi
OSPF applications-single-region and multi-region (CISCO) Single-region: 1. job Requirements! Three methods for injecting default Routes 2. Topology1. the device configuration is as follows: R1 (config) # int s1/0R1 (config-if) # ip add 192.168.1.1 255.255.255.0R1 (config-if) # no shutR1 (config-if) # int s1/1R1 (config-if) # ip add 192.168.3.1 255.255.255.0R1 (co
Why is loopback AS/32 host route advertised in OSPF?How do I change the reference bandwidth of OSPF? How does NBSP;OSPF calculate its measurement or cost? NBSP;OSPF is the routing protocol Exchange authenticated? What is the link state retransmission interval? What commands do you use to set it up? What is the functio
The OSPF network architecture is as follows:650) this.width=650; "Src=" https://s1.51cto.com/wyfs02/M02/96/55/wKioL1kf9hWT1CDjAACc6DPwYog009.jpg-wh_500x0-wm_ 3-wmp_4-s_2151784316.jpg "title=" 2017-05-20_154854.jpg "width=" 563 "height=" $ "border=" 0 "hspace=" 0 "vspace=" 0 " Style= "width:563px;height:220px;" alt= "Wkiol1kf9hwt1cdjaacc6dpwyog009.jpg-wh_50"/>Configuration of the R1:R1 (config) #router
Today, we will demonstrate how the Juniper SRX Firewall runs ipsec vpn + OSPF with Cisco routers. Topology: 650) this. width = 650; "src =" http://img1.51cto.com/attachment/201309/133822237.png "title =" 1.PNG" alt = "133822237.png"/> R1 simulates a cisco device, which is equivalent to a branch site. R2 simulates a carrier device, C1 is a zhuyun device, and bridg
Rip (CISCO) Case 2 of OSPF advanced applicationsCase 2:1. Job Requirements: Lt; 1 implement communication between networks running ospf and ripMethod: Route redistribution and injection default route Lt; 2 configure the peripheral area Lt; 3 configure the complete peripheral area2. Topology3. The device configuration i
How to locate the cause of the fault and correct troubleshooting, all need to be based on the understanding of the operation of the agreement.This article is about the idea and operation of OSPF troubleshooting.The command to use:Display IP routing-table//See route first, determine fault locationdisplay OSPF peer//based on neighbor relationships, further identify the point of failuredisplay
2.2.2.22.2.2.26250x800000030x0091605 199.99.2.2199.99.2.26300x800000020x00D0F23 "Link ID" Link ID "ADV Router" route link status "Age" aging Update Time Seq # process serial number "Checksum Link count" Link status verification Number of "Link count" Link computations Query the OSPF link status database on the R3 Router R3 # sh ip ospf database query the
Interface Serial 0/1Ip OSPF authentication Message-digestIp OSPF authentication Message-key 1 MD5 12345 Regional certification: Router OSPF 1Area 0 AuthencationInterface Serial 0/1Ip OSPF Authencation-key 123 Router OSPFArea 0 Authentication Message-digestInterface Serial 0/1Ip
650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M01/89/CC/wKioL1gdRUfAQOUJAABrH4nJ2qU055.png-wh_500x0-wm_3 -wmp_4-s_651571346.png "title=" OSPF Networking topology Map "alt=" wkiol1gdrufaqoujaabrh4nj2qu055.png-wh_50 "/>OSPF Networking Basic configuration:1. Three-layer switchSwitch>enableSwitch#configure TerminalEnter
Generally in the device by default Cisco and ZTE three-tier devices are connected via the OSPF protocol, and packets below 500 can be ping-through, but once more than 500, packets will be dropped. This is because the Cisco device defaults to packet fragmentation when the PPP is encapsulated, and ZTE devices do not support Shard reassembly, so the acceptance data
The OSPF protocol is very important for the use of Cisco routers. But how do I perform specific operations? The following article will give a detailed explanation. OSPF protocol operation: 1. the ROUTER that declares OSPF sends a HELLO message from all interfaces that start the OSP
exit Router rip Redistribute OSPF 1 metric 2 Optimization R5 # conf t R5 (config) # router OSPF 1 R5 (config-router) # area 2 stub no-Summary has gone to Class 3, Class 4, and Class 5 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M01/48/56/wKiom1QG9jrxnujpAAIN6StUeKw455.jpg "style =" float: none; "Title =" image 2.png "alt =" wkiom1qg9jrxnujpaain6stuekw455.jpg "/> 650) This. width = 650;
IP Address of the neighbor Router Interface: connect the local Interface of the neighboring Router OSPF neighbor Table query on R3 Router R3#shipospfneighbor NeighborIDPriStateDeadTimeAddressInterface 2.2.2.21FULL/-00:00:37199.99.2.1Serial1/1 "Neighbor ID" indicates the route ID of the neighboring router, and the route ID is the unique identifier of the router in the OSPF network. Pri ro
also advertise the destination address within the zone to which it is connected through the network rollup LSA to the backbone area. A default route that is outside a region and is still inside an OSPF autonomous system can also be advertised through this LSA. Use the command show ip OSPF database summary to display the network rollup LSA information in the link-state databases.N
generates a new fourth class of LSA to describe how to reach the relevant ASBR, so that the class fifth LSA can have more than one ASBR to reach the same class Its advertising router and metric are different, indicating that they are generated by different ABR. Three lsdb containing As-external-lasIs the LSDB in RTA after synchronization, pay attention to the red part650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/70/75/wKiom1W4XaWz_00uAAEidLG-r90805.jpg "title=" 3.jpg " alt= "W
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