setup dhcp on cisco router

Recently, a friend asked me how to configure static NAT for a Cisco router to allow Internet users to access the Intranet Web and email servers through a Cisco router. Obviously, this function requires NAT between the public IP address and the Intranet IP address. The following are the specific implementation methods.

Encapsulation Frame-relay boot Frame Relay Package Encapsulation Novell-ether rules the Novell unique format used on the network segment Encapsulation PPP set PPP to the encapsulation method used by the serial port or ISDN interface Encapsulation SAP rules the Ethernet 802.2 format used on the network segment the Cisco password is SAP End Exit Configuration mode Erase Remove flash memory or configure cache Erase Startup-config Delete the conte

We all know that when the router is used when the switch, you need to shut down the DHCP service to normal use, if you need to use the router to dial another, you need to go into the router settings to reset, but enter the router IP address 192.168.1.1 ( Some routers are 192

occur. Check the port configuration and route configuration of Cisco 3640, and find that the port IP address is configured normally, but there are two routes in the route list: Ip route 0.0.0.0 0.0.0.0 192.168.10.2 Ip route 0.0.0.0 0.0.0.0 10.255.12.254 Because the Department's network is the lowest subnet in the Unit's Wan, the whole unit's Wan is accessed according to business needs, and the Department's network is only connected to department B th

", "Setup" for configuration, the configuration to be saved for the next boot run directly, this is the configuration file. The configuration file exists in a non-volatile nvram. The configuration file is divided into start-up Configer and running Configer two kinds. Start-up Configer starts the NVRAM configuration at power-on. Since the Cisco router instruction

/5), round-trip min/avg/max = 1/1/4 MS 6509 MSFC # show arp | in 10.10.1.65 Internet 10.10.1.65 2 0006.2973.121d ARPA Vlan2 Through the above Cisco switch setup command, we know that the MAC address of 10.10.1.65 is 0006.2973.121d, which is the MAC address expression of IOS devices. In CatOS, it should be written as 00-06-29-73-12-1d. 　　Cisco switch

PC that configures the router must also use a valid power supply. Cisco synchronous serial interfaces are commonly used. Different interfaces can be obtained through different cables. Such as RS232 and V.35. In addition, the cables of Cisco synchronous serial interface cables are specially pre-fabricated. The system automatically enters the dialog

multiple gateways? We need to divide a physical interface into a number of sub-interfaces, and how many VLANs divide the number of sub-interfaces. Specific configuration such as (note: The first step into the physical interface is to activate the physical interface):650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/78/67/wKiom1Z7mL7T4SdcAABrJEm1 Q_Q 062.png "title=" Picture 7.png "alt=" wkiom1z7ml7t4sdcaabrjem1 Q_Q 062.png "/>650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M01/7

The importance of vro configuration is self-evident. Here we mainly analyze the Cisco router configuration statements in detail, and share them with you here, hoping to help you. Introduction to Cisco router configuration Cisco ios operating environment. ROM monitor>

Cisco router Startup ProcessThe Startup Process of a Cisco router is divided into four main stages: 1. execute POST 2. load the bootstrap program 3. search for and load Cisco IOS software 4. find and load the startup configuration file, or enter the

Set up DHCPInstall DHCP server: Yum install dhcp-yComplete installation under File/etc/dhcp/dhcpd.confVim/etc/dhcp/dhcp.confdefault-leaste-time 259200;max-lease-time 777600;option domain-name "Wangconggao";The first and second lines define the default period and the maximum period for the lease, and the values are calc

(Config-vlan) #exitSwitch (config) #int fa0/1 add our FA0/1 to VLAN2Switch (config-if) #sw mo acSwitch (config-if) #sw AC VLAN 2Switch (config-if) #exitSwitch (config) #int FA0/2 add our FA0/2 to VLAN3Switch (config-if) #sw mo acSwitch (config-if) #sw AC VLAN 3Switch (config-if) #exitSwitch (config) #int FA0/3 add our FA0/3 to VLAN4Switch (config-if) #sw mo acSwitch (config-if) #sw AC VLAN 4Switch (config-if) #exitSwitch (config) #int VLAN 2 Add an IP address to our VLAN2 to access each other o

One. Test the topology:Two. Test ideas:Three. Basic configuration:A.R1:Interface ethernet0/0IP address 202.100.1.1 255.255.255.0No shutdownIP Route 0.0.0.0 0.0.0.0 202.100.1.2B.R2:1. Interface configuration:Interface ethernet0/0IP address 202.100.1.2 255.255.255.0No shutdownInterface ETHERNET0/1No IP addressNo shutdown2.PPPOE Server configuration:AAA New-modelAAA Authentication PPP Default LocalUsername Cisco password 0