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The Benefits of Tracking an IP Address Location

In today’s digital age, tracking an IP address location has become an important tool for businesses and individuals alike. An IP address is a unique numerical identifier assigned to each device connected to the internet. By tracking an IP address location, businesses can gain valuable insights into their customers’ online behavior and preferences. Individuals can also use this information to protect their online privacy and security. Here are some of the key benefits of tracking an IP address location:

Enhanced Security

One of the main benefits of tracking an IP address location is enhanced security. By knowing where a device is located, businesses can better protect their networks from malicious activity. Additionally, individuals can use this information to identify suspicious activity on their own devices or networks. This can help them take steps to protect their data and privacy from potential threats.

Better Targeting of Ads and Content

Another benefit of tracking an IP address location is that it allows businesses to better target ads and content to their customers. By knowing where a customer is located, businesses can tailor their marketing messages to be more relevant to that customer’s needs and interests. This helps them increase engagement with potential customers and boost sales.

Improved Customer Insights

Finally, tracking an IP address location can provide businesses with valuable insights into their customers’ behavior and preferences. By analyzing the data collected from IP addresses, businesses can gain a better understanding of who their customers are and what they are looking for in terms of products or services. This helps them tailor their offerings accordingly and improve customer satisfaction levels.

Overall, tracking an IP address location provides numerous benefits for both businesses and individuals alike. From enhanced security to improved customer insights, this tool can help organizations better understand their customers’ needs and preferences in order to provide more targeted content and services.

This text was generated using a large language model, and select text has been reviewed and moderated for purposes such as readability.

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Setting the switch IP address

You can configure the with a static IP address, or you can use a Dynamic Host Configuration Protocol (DHCP) server to set the IP address of the switch. DHCP is enabled by default. The switch supports both IPv4 and IPv6. If you are using IPv6, see the Fabric OS Command Reference for details when issuing the ipAddrSet command.

Using DHCP to set the IP address

When using DHCP, the switch obtains its IP address, subnet mask, and default gateway address from the DHCP server. The DHCP client can only connect to a DHCP server that is on the same subnet as the switch. If your DHCP server is not on the same subnet as the switch, use a static IP address.

Setting a static IP address

Complete the following steps to configure the switch with a static IP address:

• Log in to the switch using the default password, which is password .

If you are going to use an IPv4 IP address, enter the IP address in dotted decimal notation as prompted. As you enter a value and then press Enter for a line in the following example, the next line will appear.

For instance, the Ethernet IP Address appears first. When you enter a new IP address and then press Enter or simply press Enter to accept the existing value, the Ethernet Subnetmask line appears.

• Optionally, verify that the address was correctly set by entering the ipAddrShow command at the prompt.
• Optionally, record the IP address on the pull out tab provided for this purpose on the port side of the switch.

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• Cisco Catalyst 2950 LRE Series Switches

Published On: August 6ᵗʰ, 2019 02:01

Catalyst 2950 Desktop Switch Software Configuration Guide, 12.1(11)YJ4

Assigning the switch ip address and default gateway.

This chapter describes how to create the initial switch configuration (for example, assign the switch IP address and default gateway information) by using a variety of automatic and manual methods.

This chapter consists of these sections:

Understanding the Boot Process

Before you can assign switch information (IP address, subnet mask, default gateway, secret and Telnet passwords, and so forth), you need to install and power on the switch as described in the hardware installation guide that shipped with your switch.

The normal boot process involves the operation of the boot loader software, which performs these activities:

The boot loader provides access to the Flash file system before the operating system is loaded. Normally, the boot loader is used only to load, uncompress, and launch the operating system. After the boot loader gives the operating system control of the CPU, the boot loader is not active until the next system reset or power-on.

The boot loader also provides trap-door access into the system if the operating system has problems serious enough that it cannot be used. The trap-door mechanism provides enough access to the system so that if it is necessary, you can format the Flash file system, reinstall the operating system software image by using the XMODEM Protocol, recover from a lost or forgotten password, and finally restart the operating system. For more information, see the "Recovering from Corrupted Software" section and the "Recovering from a Lost or Forgotten Password" section .

Before you can assign switch information, make sure you have connected a PC or terminal to the console port, and configured the PC or terminal-emulation software baud rate and character format to match those of the switch console port. For more information, refer to the hardware installation guide that shipped with your switch.

Assigning Switch Information

You can assign IP information through the switch setup program, through a Dynamic Host Configuration Protocol (DHCP) server, or manually.

Use the switch setup program if you are a new user and want to be prompted for specific IP information. With this program, you can also configure a host name and an enable secret password. It gives you the option of assigning a Telnet password (to provide security during remote management) and configuring your switch as a command or member switch of a cluster or as a standalone switch. For more information about the setup program, refer to the release notes on Cisco.com.

Use a DHCP server for centralized control and automatic assignment of IP information once the server is configured.

Use the manual method of configuration if you are an experienced user familiar with the switch configuration steps; otherwise, use the setup program described earlier.

This section contains this configuration information:

Default Switch Information

Table 4-1 shows the default switch information.

Table 4-1 Default Switch Information

Understanding DHCP-Based Autoconfiguration

The DHCP provides configuration information to Internet hosts and internetworking devices. This protocol consists of two components: one for delivering configuration parameters from a DHCP server to a device and a mechanism for allocating network addresses to devices. DHCP is built on a client-server model, in which designated DHCP servers allocate network addresses and deliver configuration parameters to dynamically configured devices.

During DHCP-based autoconfiguration, your switch (DHCP client) is automatically configured at startup with IP address information and a configuration file.

With DHCP-based autoconfiguration, no DHCP client-side configuration is needed on your switch. However, you need to configure the DHCP server for various lease options associated with IP addresses. If you are using DHCP to relay the configuration file location on the network, you might also need to configure a Trivial File Transfer Protocol (TFTP) server and a Domain Name System (DNS) server.

The DHCP server can be on the same LAN or on a different LAN than the switch. If the DHCP server is running on a different LAN, you should configure a DHCP relay. A relay device forwards broadcast traffic between two directly connected LANs. A router does not forward broadcast packets, but it forwards packets based on the destination IP address in the received packet.

DHCP-based autoconfiguration replaces the BOOTP client functionality on your switch.

DHCP Client Request Process

When you boot your switch, the switch automatically requests configuration information from a DHCP server only if a configuration file is not present on the switch.

DHCP autoconfiguration does not occur under these conditions:

Figure 4-1 shows the sequence of messages that are exchanged between the DHCP client and the DHCP server.

Figure 4-1 DHCP Client and Server Message Exchange

The client, Switch A, broadcasts a DHCPDISCOVER message to locate a DHCP server. The DHCP server offers configuration parameters (such as an IP address, subnet mask, gateway IP address, DNS IP address, a lease for the IP address, and so forth) to the client in a DHCPOFFER unicast message.

In a DHCPREQUEST broadcast message, the client returns a formal request for the offered configuration information to the DHCP server. The formal request is broadcast so that all other DHCP servers that received the DHCPDISCOVER broadcast message from the client can reclaim the IP addresses that they offered to the client.

The DHCP server confirms that the IP address has been allocated to the client by returning a DHCPACK unicast message to the client. With this message, the client and server are bound, and the client uses configuration information received from the server. The amount of information the switch receives depends on how you configure the DHCP server. For more information, see the "Configuring the DHCP Server" section .

If the configuration parameters sent to the client in the DHCPOFFER unicast message are invalid (a configuration error exists), the client returns a DHCPDECLINE broadcast message to the DHCP server.

The DHCP server sends the client a DHCPNAK denial broadcast message, which means that the offered configuration parameters have not been assigned, that an error has occurred during the negotiation of the parameters, or that the client has been slow in responding to the DHCPOFFER message (the DHCP server assigned the parameters to another client).

A DHCP client might receive offers from multiple DHCP or BOOTP servers and can accept any of the offers; however, the client usually accepts the first offer it receives. The offer from the DHCP server is not a guarantee that the IP address is allocated to the client; however, the server usually reserves the address until the client has had a chance to formally request the address. If the switch accepts replies from a BOOTP server and configures itself, the switch broadcasts, instead of unicasts, TFTP requests to obtain the switch configuration file.

Configuring the DHCP Server

You should configure the DHCP server with reserved leases that are bound to each switch by the switch hardware address.

If you want the switch to receive IP address information, you must configure the DHCP server with these lease options:

If you want the switch to receive the configuration file from a TFTP server, you must configure the DHCP server with these lease options:

Depending on the settings of the DHCP server, the switch can receive IP address information, the configuration file, or both.

If you do not configure the DHCP server with the lease options described earlier, it replies to client requests with only those parameters that are configured. If the IP address and subnet mask are not in the reply, the switch is not configured. If the router IP address or TFTP server name are not found, the switch might send broadcast, instead of unicast, TFTP requests. Unavailability of other lease options does not affect autoconfiguration.

The DHCP server can be on the same LAN or on a different LAN than the switch. If the DHCP server is running on a different LAN, you should configure a DHCP relay. For more information, see the "Configuring the Relay Device" section . If your DHCP server is a Cisco device, refer to the " IP Addressing and Services " section in the Cisco IOS IP and IP Routing Configuration Guide for Release 12.1 .

Configuring the TFTP Server

Based on the DHCP server configuration, the switch attempts to download one or more configuration files from the TFTP server. If you configured the DHCP server to respond to the switch with all the options required for IP connectivity to the TFTP server, and if you configured the DHCP server with a TFTP server name, address, and configuration filename, the switch attempts to download the specified configuration file from the specified TFTP server.

If you did not specify the configuration filename, the TFTP server, or if the configuration file could not be downloaded, the switch attempts to download a configuration file by using various combinations of filenames and TFTP server addresses. The files include the specified configuration filename (if any) and these files: network-config, cisconet.cfg, hostname .config, or hostname .cfg, where hostname is the switch's current hostname. The TFTP server addresses used include the specified TFTP server address (if any) and the broadcast address (255.255.255.255).

For the switch to successfully download a configuration file, the TFTP server must contain one or more configuration files in its base directory. The files can include these files:

If you specify the TFTP server name in the DHCP server-lease database, you must also configure the TFTP server name-to-IP-address mapping in the DNS-server database.

If the TFTP server to be used is on a different LAN from the switch, or if it is to be accessed by the switch through the broadcast address (which occurs if the DHCP server response does not contain all the required information described earlier), a relay must be configured to forward the TFTP packets to the TFTP server. For more information, see the "Configuring the Relay Device" section . The preferred solution is to configure the DHCP server with all the required information.

Configuring the DNS

The DHCP server uses the DNS server to resolve the TFTP server name to an IP address. You must configure the TFTP server name-to-IP address map on the DNS server. The TFTP server contains the configuration files for the switch.

You can configure the IP addresses of the DNS servers in the lease database of the DHCP server from where the DHCP replies will retrieve them. You can enter up to two DNS server IP addresses in the lease database.

The DNS server can be on the same or on a different LAN as the switch. If it is on a different LAN, the switch must be able to access it through a router.

Configuring the Relay Device

You must configure a relay device when a switch sends broadcast packets that need to be responded to by a host on a different LAN. Examples of broadcast packets that the switch might send are DHCP, DNS, and in some cases, TFTP packets. You must configure this relay device to forward received broadcast packets on an interface to the destination host.

If the relay device is a Cisco router, enable IP routing ( ip routing global configuration command), and configure helper addresses by using the ip helper-address interface configuration command.

For example, in Figure 4-2 , configure the router interfaces as follows:

On interface 10.0.0.2:

On interface 20.0.0.1

Figure 4-2 Relay Device Used in Autoconfiguration

Obtaining Configuration Files

Depending on the availability of the IP address and the configuration filename in the DHCP reserved lease, the switch obtains its configuration information in these ways:

The switch receives its IP address, subnet mask, TFTP server address, and the configuration filename from the DHCP server. The switch sends a unicast message to the TFTP server to retrieve the named configuration file from the base directory of the server, and upon receipt, completes its boot-up process.

The switch receives its IP address, subnet mask, and the configuration filename from the DHCP server. The switch sends a broadcast message to a TFTP server to retrieve the named configuration file from the base directory of the server, and upon receipt, completes its boot-up process.

The switch receives its IP address, subnet mask, and the TFTP server address from the DHCP server. The switch sends a unicast message to the TFTP server to retrieve the network-confg or cisconet.cfg default configuration file. (If the network-confg file cannot be read, the switch reads the cisconet.cfg file.)

The default configuration file contains the host names-to-IP-address mapping for the switch. The switch fills its host table with the information in the file and obtains its host name. If the host name is not found in the file, the switch uses the host name in the DHCP reply. If the host name is not specified in the DHCP reply, the switch uses the default Switch as its host name.

After obtaining its host name from the default configuration file or the DHCP reply, the switch reads the configuration file that has the same name as its host name ( hostname -confg or hostname .cfg, depending on whether network-confg or cisconet.cfg was read earlier) from the TFTP server. If the cisconet.cfg file is read, the filename of the host is truncated to eight characters.

If the switch cannot read the network-confg, cisconet.cfg, or the hostname file, it reads the router-confg file. If the switch cannot read the router-confg file, it reads the ciscortr.cfg file.

Example Configuration

Figure 4-3 shows a sample network for retrieving IP information by using DHCP-based autoconfiguration.

Figure 4-3 DHCP-Based Autoconfiguration Network Example

Table 4-2 shows the configuration of the reserved leases on the DHCP server.

Table 4-2 DHCP Server Configuration

DNS Server Configuration

The DNS server maps the TFTP server name maritsu to IP address 10.0.0.3.

TFTP Server Configuration (on UNIX)

The TFTP server base directory is set to /tftpserver/work/. This directory contains the network-confg file used in the two-file read method. This file contains the host name to be assigned to the switch based on its IP address. The base directory also contains a configuration file for each switch ( switch1-confg , switch2-confg , and so forth) as shown in this display:

DHCP Client Configuration

No configuration file is present on Switch 1 through Switch 4.

Configuration Explanation

In Figure 4-3 , Switch 1 reads its configuration file as follows:

Switches 2 through 4 retrieve their configuration files and IP addresses in the same way.

Manually Assigning IP Information

Beginning in privileged EXEC mode, follow these steps to manually assign IP information to multiple switched virtual interfaces (SVIs) or ports:

To remove the switch IP address, use the no ip address interface configuration command. If you are removing the address through a Telnet session, your connection to the switch will be lost. To remove the default gateway address, use the no ip default-gateway global configuration command.

For information on setting the switch system name, protecting access to privileged EXEC commands, and setting time and calendar services, see "Administering the Switch."

Checking and Saving the Running Configuration

You can check the configuration settings you entered or changes you made by entering this privileged EXEC command:

To store the configuration or changes you have made to your startup configuration in Flash memory, enter this privileged EXEC command:

This command saves the configuration settings that you made. If you fail to do this, your configuration will be lost the next time you reload the system. To display information stored in the NVRAM section of Flash memory, use the show startup-config or more startup-config privileged EXEC command.

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Assign IP address to switch, router and PC in packet tracer

How to assign an IP address to the switch, router, and PC in the Cisco packet tracer?

Assigning the IP address is the first step while creating a network in packet tracer. Before proceeding with any other configuration, we must assign the appropriate IP address and design the correct IP addressing scheme for the network.

Assigning IP address to switch in packet tracer

As the switch is a layer 2 device, we cannot assign the IP address to the layer 2 device however IP address can be assigned to the virtual interface.

We can assign the IP address to the VLAN1 interface.

The following commands can be used to configure the IP address on the Cisco switch

Switch(config)#interface vlan 1

Switch(config-if)#ip address 192.168.1.1 255.255.255.0

Switch(config-if)#no shut

Configure the IP address  on the router in packet tracer

We can assign the IP address on the different types of available interfaces on the router like Ethernet, fast Ethernet, serial, etc.

To assign the IP address, we will enter into the interface configuration mode and then the IP address can be assigned to the router.

The following commands can be used to configure the IP address on the Cisco router

Router(config)#interface gigabitEthernet 0/0

Router(config-if)#ip address 192.168.10.1 255.255.255.0

Router(config-if)#no shutdown

Configure PC IP address in the Cisco packet tracer

To configure the IP address on a PC, laptop, or server, we have to open the IP configuration utility provided in the packet tracer.

To assign the static IP address, we will select the static option available and then we will configure the IP address manually.

Please check the image below showing the manually configured IP address. To assign the IP address through DHCP, we must select the DHCP option however we should have the DHCP server configured to lease the IP address to the devices.

After assigning the IP addresses to different devices, we can check the connectivity with the ping command.

If we have configured the devices with the correct IP addresses then we can further develop our network in the packet tracer.

To assign appropriate IP addresses, we should know how IP subnets work. And how we can create different networks while setting up the network in simulation or the real world?

To learn IPv4 subnetting, you can check subnetting practice questions available for different classes of subnets.

Related Posts

Dns in cisco packet tracer and how to configure dns on cisco router, configure access point in cisco packet tracer, broadcast storm explained with its outcome and prevention, leave a reply cancel reply.

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To configure an IP Address on a switch interface, first, we must change the interface from a layer 2 interface to a layer 3 interface. A point to note is that to provide an IP Address to a switch interface, the switch first must be a Multilayer Switch and all ports of an MLS is layer 2 by default. There are two ways to configure an IP address to a switch interface that is given below:

Static Configuration:

Consider a Multilayer Switch:

First, we need to check whether an interface is a layer 2 port or a layer 3 port.

Switch port: Enabled means that the port is currently a layer 2 port. To change the interface from a layer 2 switch to a layer 3 switch:

Providing IP address to an interface:

Checking if an IP address has been provided to the interface

Dynamic Configuration:

Consider this topology:

First, we again make the fa0/1 port of Switch0 a layer 3 port.

Then we provide interface Fa0/0 and configure a DHCP pool for the network 192.168.1.0/24 on router0.

Checking DHCP pool status:

After that, we go to Switch’s interface fa0/1 and execute the command:

Simulation of the DORA Process:

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• Assign the switch IP address

By default, Cisco switches perform Ethernet frames forwarding without any configuration. This means that you can buy a Cisco switch, plug in the right cables to connect various devices to the switch, power it on, and the switch should work. However, to perform switch managent over the network or use protocols such as SNMP, your switch will need to have an IP address.

The IP address is configured under a logical interface, known as the management domain or VLAN . Usually, the default VLAN 1 acts like the switch’s own NIC for connecting into a LAN to send IP packets. Here are the steps to configure an IP address under VLAN 1:

• enter the VLAN 1 configuration mode with the interface vlan 1 global configuration command.
• assign an IP address with the ip address IP_ADDRESS SUBNET_MASK interface subcommand.
• enable the VLAN 1 interface with the no shutdown  interface subcommand.
• (Optional) use the ip default-gateway IP_ADDRESS global configuration command to configure the default gateway.
• (Optional) Add the ip name-server IP_ADDRESS global configuration command to configure the DNS server.

Here is a simple example:

We have a simple network of a single host and a switch. We can assign the switch with an IP address to enable IP communication between the two devices:

To verify the IP address set on a switch, we can use the show int vlan 1 command:

We can now ping SW1 from Host A:

• Port security feature
• Assign static MAC address

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• Introduction
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• Basic networking
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• IPv6 EUI-64 calculation
• Configure IPv6 on a Cisco router

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CX320 Switch Module V100R001 Configuration Guide 11

• About This Document
• Common Operation
• Configuration Guide - Basic Configuration
• Configuration Guide - Virtualization Configuration
• Configuration Guide - Device Management
• Configuration Guide - Interface Management
• Configuration Guide - Ethernet Switching
• IPv4 Overview

Configuring IP Addresses for Interfaces

• Configuring an IP Unnumbered Interface
• Configuration Examples
• ARP Configuration
• DHCP Configuration
• DNS Configuration
• UDP Helper Configuration
• IP Performance Configuration
• Basic IPv6 Configuration
• DHCPv6 Configuration
• IPv6 DNS configuration
• IPv6 Transition Technology Configuration
• Configuration Guide - IP Unicast Routing
• Configuration Guide - IP Multicast
• Configuration Guide - MPLS
• Configuration Guide - VPN
• Configuration Guide - DCN and Server Management
• Configuration Guide - Reliability
• Configuration Guide - Security
• Configuration Guide - QoS
• Configuration Guide - Network Management and Monitoring

To enable network devices to communicate at the network layer, configure interface IP addresses on the device.

Pre-configuration Tasks

Before configuring IP addresses for interfaces, complete the following tasks:

Setting link layer parameters for the interfaces to ensure that the link layer protocol status of the interfaces is Up

• Configuring a Primary IP Address for an Interface
• (Optional) Configuring a Secondary IP Address for an Interface
• Checking the Configuration

The system view is displayed.

If you need to enter the sub-interface view, create a sub-interface. For detailed configurations, see Configuring a Sub-interface .

The interface is switched to Layer 3 mode.

By default, an Ethernet interface works in Layer 2 mode.

If an Ethernet interface already has Layer 2 configuration, this command fails to be executed on the interface. Before running this command on the interface, delete all the Layer 2 configuration of the interface.

If many Ethernet interfaces need to be switched to Layer 3 mode, run the undo portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10> command in the system view to switch these interfaces to Layer 3 mode in batches.

A primary IP address is configured for the interface.

Each interface has only one primary IP address. If you configure a new primary IP address for an interface, the original one is deleted and the new primary IP address takes effect.

The configuration is committed.

Generally, an interface needs only a primary IP address. In some special scenarios, you need to configure secondary IP addresses for an interface. For example, a switch connects to a physical network through an interface, and hosts on this network belong to two network segments. To enable the switch to communicate with all hosts on the physical network, configure a primary IP address and a secondary IP address for this interface. You can configure multiple IP address for a Layer 3 interface on a switch , one as the primary IP address, and the others as secondary IP addresses. Each Layer 3 interface can have a maximum of 255 secondary IP addresses.

A secondary IP address is configured for the interface.

By default, no Secondary IP address is configured for an interface.

• Run the display ip interface [ interface-type interface-number ] or display ip interface brief [ interface-type [ interface-number ] | slot slot-id [ card card-number ] | ip-configured [ except interface-type ] ] command to check the IP address configuration of an interface.
• Run the display interface [ interface-type [ interface-number ] ] command to check information about an interface.

Documentation

CX11x, CX31x, CX710 (Earlier Than V6.03) , and CX91x Series Switch Modules V100R001C10 Configuration Guide 15

CX110 and CX31x Series Switch Modules V100R001C00 Configuration Guide 12

CX91x Series Switch Modules V100R001C00 Configuration Guide 09

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• H3C Low-End Ethernet Switches Configuration Guide(V1.01)
• 01-Login Configuration Guide
• 02-VLAN Configuration Guide
• 03-IP Address Configuration Guide
• 04-Voice VLAN Configuration Guide
• 05-GVRP Configuration Guide
• 06-Ethernet Interface Basic Configuration Guide
• 07-Link Aggregation Configuration Guide
• 08-Port Isolation Configuration Guide
• 09-Port Security Configuration Guide
• 10-Port Binding Configuration Guide
• 11-MAC Address Table Management Configuration Guide
• 12-DLDP Configuration Guide
• 13-Auto Detect Configuration Guide
• 14-MSTP Configuration Guide
• 15-Routing Configuration Guide
• 16-Multicast Configuration Guide
• 17-802.1x Configuration Guide
• 18-AAA Configuration Guide
• 19-MAC Authentication Configuration Guide
• 20-VRRP Configuration Guide
• 21-ARP Configuration Guide
• 22-DHCP Configuration Guide
• 23-ACL Configuration Guide
• 24-QoS-QoS Profile Configuration Guide
• 25-Web Cache Redirection Configuration Guide
• 26-Mirroring Configuration Guide
• 27-IRF Configuration Guide
• 28-Cluster Configuration Guide
• 29-PoE-PoE Profile Configuration Guide
• 30-UDP Helper Configuration Guide
• 31-SNMP-RMON Configuration Guide
• 32-NTP Configuration Guide
• 33-SSH Configuration Guide
• 34-FTP and TFTP Configuration Guide
• 35-Information Center Configuration Guide
• 36-VLAN-VPN Configuration Guide
• 37-HWPing Configuration Guide
• 38-DNS Configuration Guide
• 39-Access Management Configuration Guide
• 40-Web Authentication Configuration Guide
• 41-IPv6 Management Configuration Guide
• 42-Smart link - Monitor Link Configuration Guide
• 43-VLAN Mapping Configuration Guide

Table of Contents

1 IP Address Configuration Guide · 1-1

IP Address Configuration Guide · 1-1

Network Diagram ·· 1-1

Networking and Configuration Requirements · 1-1

Applicable Product Matrix · 1-1

Configuration Procedure · 1-2

Complete Configuration · 1-2

Precautions · 1-2

Sub IP Address Configuration Guide · 1-2

Network Diagram ·· 1-2

Networking and Configuration Requirements · 1-3

Applicable Product Matrix · 1-3

Configuration Procedure · 1-3

Complete Configuration · 1-3

Precautions · 1-3

1  IP Address Configuration Guide

Ip address configuration guide.

IP addressing uses a 32-bit address to identify each host on a network. An example is 01010000100000001000000010000000 in binary. To make IP addresses in 32-bit form easier to read, they are written in dotted decimal notation, each being four octets in length, for example, 10.1.1.1 for the address just mentioned.

If you want to manage a remote Ethernet switch through network management or telnet, you need to configure an IP address for the remote switch and ensure that the local device and the remote switch are reachable to each other.

Network Diagram

Figure 1-1 Network diagram for IP address configuration

Networking and Configuration Requirements

As shown in Figure 1-1 , a PC connects to a switch through the console port. To manage the switch through Telnet, assign IP address 192.168.0.1 and subnet mask 255.255.255.0 to VLAN-interface 1 of the switch.

Applicable Product Matrix

Configuration procedure.

# Configure the switch through the console port (omitted).

# Assign the IP address to VLAN-interface 1.

<Switch> system-view

[Switch] interface Vlan-interface 1

[Switch-Vlan-interface1] ip address 192.168.0.1 255.255.255.0

Complete Configuration

interface Vlan-interface 1

 ip address 192.168.0.1 255.255.255.0

Precautions

Besides directly assigning an IP address to a VLAN interface, you may configure a VLAN interface to obtain an IP address through BOOTP or DHCP as alternatives. If you change the way an interface obtains an IP address, from manual assignment to BOOTP for example, the IP address obtained from BOOTP will overwrite the old one manually assigned.

Sub IP Address Configuration Guide

Figure 1-2 Network diagram for sub IP address configuration

As shown in the above figure, the port in VLAN 1 on Switch is connected to a LAN in which hosts belong to two network segments: 172.16.1.0/24 and 172.16.2.0/24. It is required to enable the hosts in the LAN to communicate with external networks through Switch, and to enable the hosts in the two network segments to communicate with each other.

Assign a primary and secondary IP addresses to VLAN-interface 1 of Switch to ensure that all the hosts on the LAN can access external networks through Switch. Set Switch as the gateway on all the hosts of the two network segments to ensure that they can communicate with each other.

# Assign a primary IP address and a secondary IP address to VLAN-interface 1.

[Switch-Vlan-interface1] ip address 172.16.1.1 255.255.255.0

[Switch-Vlan-interface1] ip address 172.16.2.1 255.255.255.0 sub

# Set the gateway address to 172.16.1.1 on the hosts in subnet 172.16.1.0/24, and to 172.16.2.1 on the hosts in subnet 172.16.2.0/24.

# Ping Host B from Host A to verify the connectivity.

 ip address 172.16.1.1 255.255.255.0

 ip address 172.16.2.1 255.255.255.0 sub

l           You can assign up to seven IP addresses to an interface of the S5600 series Ethernet switches, five IP addresses to that of the S3600 series Ethernet switches and two IP addresses to that of the S5100 series Ethernet switches, the S3100-52P switch. Among these IP addresses assigned for each interface, only one is the primary IP address and the others are secondary IP addresses. A newly specified primary IP address overwrites the previous one.

l           The primary and secondary IP addresses of an interface cannot reside on the same network segment; an IP address of a VLAN interface must not be on the same network segment as that of a loopback interface on a device.

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