Routing protocols are used for router selection paths and for managing routing tables, which support routable protocols by sharing routing information between routers. Routing information is passed between neighboring routers to ensure that all
Enter "? The Show all HelpEnter the command? The show full command wordEnter the command? "Show command-available parameter informationPress "TABLE" to complete the command all wordsPress "up or down" to show used commandsPress "CTRL + Z" to leave
CDP protocol: Cisco Discovery ProtocolShow CDPShow CPD Neighbors: see which Cisco devices are connected to the current deviceCDP timer: Modify send interval timeCDP Holdtime: Modify retention timeCDP advertise-2: Modify version numberDebug CDP
Network devices (routers, switches, firewalls, and so on) require an operating system as well as computers. Network devices use a dedicated operating system, collectively known as iOS (Internetwork Operating system, network operating system).(1)
Seven-layer protocol and related instructionsPhysical layer Device: hub, Repeater, encoder-decoder, transmission media connectorHubs connect devices that share the same bandwidth in the same conflict domain, the same broadcast domain.Data Link Layer:
VPN clients can be provided Internet access by forwarding the traffic of the VPN user to the ISP's Internet network management.
Implemented by creating a static route in the VRF of the PE router and specifying the next hop in the global routing
We break down the Multi-Protocol Label exchange technology into several major elements, hoping to help you understand the working principles of this technology. To facilitate understanding, we will use an interesting analogy to describe how the
1. Interconnection between different VRF: (Integration of intranet and external network)
The topic finally found a positive solution in the book.
There's always a question around me and some friends, if two vrf (companies) have access to each
Clock Configuration
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1. Configure vroa A (assuming vroa A is the DCE end of the serial line)
Router> en
Router # conf t
Router (config) #
Dynamic Route RIP
RIP broadcasts UDP packets to exchange route information and sends route information updates every 30 seconds. The maximum number of hops supported by RIP is 15.
The experiment has been verified, but the topology is
[Lab environment]
Cisco Packet Tracer 5.3.2
[PURPOSE]
Do not describe the basic commands of Cisco IOS too much. Focus on learning Common Cisco IOS skills to improve the efficiency of subsequent experiments.
[Experiment topology]
Lab procedure]
1.
[Lab environment]
Cisco Packet Tracer 5.3.2
[PURPOSE]
Exercise configuring vswitch remote telnet Management
[Experiment topology]
Lab procedure]
1. Connect the device by topology. The router only configures the interface IP address, without
[Lab environment]
GNS3 (Because Packet Tracer does not support DHCP-related commands, the GNS3 Simulator Based on the cisco ios image file can also be used on a real machine)
[PURPOSE]
Exercise configuring the DHCP service on a Cisco router to
[Lab environment]
Cisco Packet Tracer 5.3.2
[PURPOSE]
I will not describe the basic commands of Cisco IOS too much. I will focus on some common Cisco IOS skills to improve the efficiency of subsequent experiments.
[Experiment topology]
Lab
[Lab environment]
Cisco Packet Tracer 5.3.2
[PURPOSE]
Exercise the use of the ip default-network command to declare the default route in the network routing protocol.
[Experiment topology]
[Lab description]
Vrogw GW and ISP refer to the default
1, backup configuration to TFTP2, from TFTP COPY to run3. Back up iOS4. Upgrade iOS5, if the upgrade fails the workaroundOne, backup restore configuration1, to ensure that the router and computer (TFTP server) network IP (direct connection, same
First, the function1.MAC Address Learning2. Confirm the forwarding and filtering of frames3. Prevent loopsSecond, the way of frame exchange1. Passthrough forwarding: The switch detects the destination address immediately after forwardingFast forward
In a strange environment, if you want to reach a certain location, there are three methods: the first method is to ask a wizard, as long as you want to clearly describe the destination, you don't have to worry about it along the way. The Wizard will
Above we have realized that RIP (routing Information Protocol) &EIGRP (Enhanced Gateway Routing protocol), we come to know the following routing protocol OSPF (Open Shortest Path precedence protocol) also called it as an interface-sensitive routing
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