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1. As long as the essence of understanding, the name is not important! Many of the network masters using Linux in the face of Cisco administrators such as management distance, routing metrics, and other vocabulary, there is no PK on the conscious defeat. I think it is really a pity that we are all family and why are we so embarrassed? If you understand the essence, how to describe it is not so important. H
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 OSPF protocol is started through the Router ospf command. The OSPF protocol Process id is only a value related to t
Routers are packet forwarding devices that work in the third layer of the OSI Reference Model-the network layer. Routers implement network interconnection by forwarding packets. Although routers can support a variety of protocols (such as TCP/IP, ipx/spx, AppleTalk, etc.), most routers in China run TCP/IP protocol. Routers typically connect two or more logical ports identified by an IP subnet or Point-to-Point protocol, with at least one physical port. The router determines the output port and t
Cisco single-ARM routing configuration One-arm routing, which is to set up multiple logical subinterfaces on the router, one VLAN for each sub-interface. The data on each sub-interface is passed on the physical link to be labeled encapsulated. Cisco devices support ISL and 802.1q (dot1q) protocols. Huawei only support
0.20.255.255 any ! Route-map net-10 permit 10 Matches ip address 111 Set interface Ethernet0/1 ! Route-map net-10 permit 20 ! End We can test our configuration in this way. Send ping command on vro10.10.1.1.1 named Cisco-1 Make a host on the Internet (here is the 192.1.1.1 host ). You want to view the name "Internet Router" In the privileged command mode, run th
Basic knowledge of Cisco Routing Router The simplest network can be imagined as a single-line bus. Each computer can send packets to the bus to communicate with each other. However, as the number of computers in the network increases, this is not feasible and will cause many problems: 1. bandwidth resources are exhausted.2. Each computer wastes a lot of time processing unrelated broadcast data.3. The netwo
While dynamic routing protocols provide easy deployment, there will be situations in which more specific selection of routing paths can be advantageous. cisco Policy Based Routing provides a flexible mechanic for network administrators to customize the operation of the routing
One: Software solutionsSoftware:Https://ngrok.com/downloadNgrok-stable-windows-amd64.zipUse:CMD---CD: Switch to the software catalogNgrok.exeIn the pop-up box, enter: Ngrok HTTP 80 (80 or other port number, depending on the situation)Two: Cisco routes do the mappingSteps are as follows Login Cisco En, config View Configuration Show Run Fixed IP:IP nat inside source static TCP 10.10.1.25
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The enterprise that divides the subnet often should notice, the router load is heavier. What is CIDR, abbreviation for no class inter-domain routing Based on the VLSM subnet Division, the route entry is increased, the route "explodes", and the burden of routers increases. When the size of the network is smaller, the problem does not seem very serious. But in a large network, if all the subordinate networks are split, this will make the
Cisco router configuration manual Virtual LAN (VLAN) routing 1. The main network technology we currently use when constructing an enterprise network is generally based on exchange and virtual networks. The exchange technology changes shared media to exclusive media, greatly improving the network speed. The Virtual Network Technology breaks the restrictions of the geographical environment. without changing t
Hot Backup Routing protocol Hsrp:cisco Private protocolEnsures that when the network edge device or access link fails, the user communication can be quickly and transparently restored to provide redundancy for the IP network, by using the consent virtual IP address and virtual MAC address, two or more routers on the LAN segment can be used as a virtual router for external services.HSRP enables Cisco routers
[Cisco] DHCP relay, layer-3 Switch VLAN Routing PracticeThe experiment topology uses the GNS3 0.8.6 simulator to build a DHCP server using Red Hat 6.5. The experiment requires configuring a layer-3 Switch VLAN routing so that VLAN10 and VLAN20 members can access each other. Performs DHCP relay for layer-3 switches so that VLAN10 and VLAN20 members can obtain IP a
Ethernet channel:Switch (config) #interface range f0/x-X (x-x port selected)Switch (config-if-range) #switchport mode trunk (Configure Port to trunk mode)Switch (Config-if-range) #channel-group 1 mode on (open channel)Configure the DHCP service on the routerRouter (config) #Router (config) #ip DHCP pool Hydra (define an address pool)Router (dhcp-config) #network 192.168.1.0 255.255.255.0 (dynamically assigned IP address segment)Router (dhcp-config) #default-router 192.168.1.254 (dynamically ass
up with a solution, that is, to use the "routing policy" to increase the management distance of Route entries sent by EBGP 99.99.99.0, alternatively, the Management Distance from the 99.99.99.0/24 route entries received by the Network in the same way is smaller than that of the EBGP 20. The routing policy is to make a routing policy based on the content of the r
Recently I started to read this book on TCP/IP routing technology. Although it is difficult to understand at the current level, I am still willing to go and see it. Every time you read a section, sort it out. Although not summarized in your own words. However, it is better to use some original articles. Because you have little experience. Understanding is not thorough enough. Extract the classic data. I will update it occasionally in the future. Pleas
Chapter IIIOne, managing Cisco IOS Configuration1 , there are two waysa , Runing-configthe current configuration command, which is saved in the RAM (volatile memory). Device power down, configuration is lost!!b , Startup-configSave the configuration to NVRAM (nonvolatile memory). No control device changes (restart, power off, etc.) configuration will not be lost!!router#copy runing-config startup-config----
Static routing configuration:Configuration ideas and steps:1, configure the host PC-1 IP address and gateway IP address;2, configure the router R1 IP address of the interconnection port;3, configure the host PC-2 IP address and gateway IP address;4, configure the router R2 IP address of the interconnection port;5, in the R1 configuration to go to the 192.168.20.0/24 route;R1 (config) # ip route 192.168.20.0 255.255.255.0 192.168.12.26, in the R2 confi
BGP Default-information originate function testing 1, requirement description This testing need check Maipu and CISCO BGP default-information orginate compatible with each or. 2, testing topology 3, testing configuration MP3840: Interface Loopback0 IP address 6.6.6.6 255.255.255.255 Exit Interface Fastethernet0 IP address 2.1.1.2 255.255.255.0 Exit Router BGP 100 No auto-summary No synchronization Redistribute static Neighbor 2.1.1.1
After the new switch is bought, all need to be simple configuration to meet the unit network operation, after the configuration of the device will need to put it where it should be placed, but in the future we need to view or modify this device, we need to use remote login to configure it. Let's talk about the specific configuration of remote login.First, you need to use a dedicated configuration line (console line) to connect the deviceSecond, configure the line of another section of the connec
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