In the process of setting up a wireless AP or wireless router, users will encounter a lot of parameters, if only to complete the general settings, to meet the general needs of the Internet, there are some parameters do not need in-depth understanding. But in some more complex network environment, we may need some parameters for the corresponding configuration, today we will take a look at the wireless router
Assume that two Cisco routers and R1 (server) connect to R2 (client) to form a simple chained lan. DHCP is implemented below. The configuration commands and explanations are as follows:
1. Configure the R1 dhcp Service
Dhcp # configure terminal
// Enter global Mode
Dhcp
Some time ago, my colleague asked me a question about the DHCP configuration of the Cisco router. At that time, I did not give a positive answer, because this was my first time. In the following days, I have consulted relevant materials and are satisfied with the following answers. Share it with you now! In addition, most people do not know about the computer and do not operate these operations. Therefore,
As the DHCP settings of the vswitch, the router switches the wireless route of the vswitch to the AP mode to connect to the wired router. Disable the DHCP service built in the wireless router for the Wireless AP to use, but sometimes the computer cannot get the IP address co
Some of the comrades may not be very clear about the DHCP configuration of Cisco routers, and most people do not know about the computer, so, the customer asked us to allow any computer to access the LAN to access the Internet, so we had to configure DHCP 2600. 2600 router we identify as: Cisco enters global mode.
Cisco (config) # ip
Enable_isolated_metadata = True means that the network must be truly isolated, so a non-isolated network refers to a port that points to subnet. and the gateway IP of this port is the gateway IP of subnet. So there are three ways to deal with it:
Create a true isolated network using--no-gateway: Subnet-create net1 172.17.17.0/24 --no-gateway --name=sub1
Or do not create neutron router. Using external routes via--router:external=true: Neutron ne
performing load balancing, You need to analyze some specific fields based on different user needs and then forward them to different servers. Therefore, we need to focus on resolving the DHCP packet format.
2. DHCP packet format
DHCP is an extension of the BOOTP protocol. The data packet formats of the two are the same. Some fields in the packet are used for BOO
Based on the previous two sections, we have mastered the DHCP Server configuration of the Huawei 3COM router and the DHCP Relay configuration of the Huawei 3COM router. Here we will talk about the last part: the configuration steps and content of the
the calculation, you need to fill in the length column with 27, and "255.255.255.224" in the subnet mask column.
Map IP Address Range dialog box
(6) Click the Next button to open the dialog box shown in Figure 21. In this dialog box you can specify some IP addresses to exclude from the above address range. These IP addresses to be excluded are typically used for special servers or workstations, and they may need to be in a static IP address mode. Of course
check, or refer to the router instructions, in my opinion, these methods are not by the shop, are incomplete, these tutorials simply explained how to bridge two routers, but did not solve the actual problem of Internet access
Many tutorials have this step: when you set up the secondary route (b route, from the route) all the DHCP server-----The Dynamic Host Set
H3C router (vswitch) DHCP configuration uses the H3C switch or vro to act as the classic configuration of the DHCP server (excluding Relay) [H3C] dhcp enable // enable dhcp www.2cto.com [H3C]
computer in the LAN.
II. how DHCP works
(1) first, let's introduce several explanations:
DHCP client: an internet host that obtains network configuration parameters through DHCP, usually a common user workstation.
DHCP server: the DHCP
relay Proxy: the host or router that forwards DHCP messages between the DHCP client and the server
DHCP is designed based on the client/server model. DHCP clients and
First, the experimental topologySecond, the specific configurationRouter (config) #do sh runbuilding configuration ... Current configuration:604 bytes!version 12.4no service Timestamps log datetime MSECNO service timestamps debug datetime MSECNO Service Password-encryption!hostname router!ip dhcp excluded-address 192.168.1.1!IP DHCP Pool ABCNetwork 192.168.1.0 25
Computer 100,000 why platform newest netizen question answer: What is DHCP in the router setup? Do you need to keep the startup status?
The Dynamic Host Settings protocol (Dynamics host Configuration Protocol, DHCP) is a LAN protocol that uses the UDP protocol to work There are two main uses: automatically assigning IP addresses to internal network or net
fact, DHCP settings are very simple. You only need to set dhcpd. conf to start. However, you must note the following specifications when editing this file:
1 # annotation symbol
2 except for the right brace ")", each other row must end with a semicolon;
3. Set the project syntax to
4. Certain configuration items must be set using option. The basic method is option.
For example, option domain-name "yao.domain.com ";
In fact, dhcpd. the configuratio
two ways to detect ARP requests: one is that the DHCP server sends an ARP request to the network about the IP address of the opportunity IP to be allocated to the DHCP client, if no response is received, the address is not used. Of course, you do not want to receive an ARP response. If you receive a response, the address is used.
, DHCP can also retain some IP addresses for some machines for special purposes, that is, static IP addresses of some clients can also be set dynamically. It is usually bound with the host Nic's physical address MAC address, which gives you a larger design space. DHCP can also help clients specify attributes such as router, netmask, DNS
Dhcp:DHCP enable enable DHCP functionalityDHCP server FORBIDDEN-IP 192.168.1.1 Setting this IP does not participate in automatic assignmentDHCP server Ip-pool 0 defines a pool of addresses named 0Network 192.168.1.0 Mask 255.255.255.0 set the IP address range to be assigned automaticallyGateway-list 192.168.1.1 Set the gateway address for automatic acquisition of
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