Enabling DHCP Relay Agent Information Option (Option 82)

The DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Relay Agent Information option (Option 82) allows the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Relay Agent to insert circuit specific information into a request that is being forwarded to a DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server.

The master Instant AP, when acting as a DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  relay agent, inserts information about the slave Instant AP and SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. through which a client connects to the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  request. Many service providers use this mechanism to make access control decisions.

Option 82 can be customized to cater to the requirements of any ISPInternet Service Provider. An ISP is an organization that provides services for accessing and using the Internet. using the master Instant AP. To facilitate customization using a XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. definition, multiple parameters for Circuit ID and Remote ID options of DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Option 82 have been introduced. The XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. file is used as the input from the user and is validated against an XSD file in the master Instant AP. The format in the XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. file is parsed and stored in the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  relay which is used to insert Option 82 related values in the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  request packets sent from the client to the server.

When IP Helper is enabled on an L3 interface, DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  discover broadcast is filtered at the datapath level and is unicast to the configured helper device.

 

DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Option-82 is supported only for IPv4.

DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Option-82 on L2 VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. can be enabled without the helper address.

Sample XML Format

The following is a sample XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. file which specifies DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Option-82 circuit and remote IDs.

<?xml version="1.0" encoding="UTF-8"?>

<dhcpopt82>

<circuit_id>

<param>

<type>var</type>

<val>apmac</val>

<delim>-</delim>

</param>

</circuit_id>

<remote_id>

<param>

<type>var</type>

<val>uemac</val>

<delim>:</delim>

</param>

</remote_id>

</dhcpopt82>

The table below lists the elements introduced in the param sub-options of the Circuit ID and Remote ID fields:

XML File Parameters

Parameter

Description

Type

Listed below are the types available:

var–A DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  option-82 allowed keyword

hex–A hexadecimal string with a maximum of 64 characters

str–An ASCIIAmerican Standard Code for Information Interchange. An ASCII code is a numerical representation of a character or an action. string with a maximum of 64 characters

Val

This field contains either a hexadecimal string or ASCIIAmerican Standard Code for Information Interchange. An ASCII code is a numerical representation of a character or an action. string limited to 64 characters, if the type is hex or str. If the type is var then one of the following DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  option-82 keywords:

apname/APNAME–AP name

apgrpname/APGRPNAME–AP group name (zone name)

apmac/APMAC–AP MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network.

ssidt/SSIDT–SSID Type

bssid/BSSID–BSSID of AP

uemac/UEMAC–User MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. (Client)

Delim

The delim option is available only for mac based keywords - apmac/APMAC, uemac/UEMAC, and bssid/BSSID. The delim field is used if MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. addresses are required to be in ASCIIAmerican Standard Code for Information Interchange. An ASCII code is a numerical representation of a character or an action. format with octets separated with either a colon (:) or a hyphen (-).

By default, the ASCIIAmerican Standard Code for Information Interchange. An ASCII code is a numerical representation of a character or an action. MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. separated by a delimiter, will be in lower case. If the user wants to use upper case then the respective MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. -based val keywords must be written in upper case in XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. file. For example:

<param>

<type>var</type>

<val>UEMAC</val>

<delim>:</delim>

</param>

If the delim field is not present in MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. -based keywords, then the MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. addresses are sent in option82 in hexadecimal format. For example:

<param>

<type>var</type>

<val>apmac</val> (sent in hex format)

</param>

 

Configuring XML Based DHCP Option 82 Specification

Listed below is the sequence of steps to be followed if a user wants to use XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. based DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  option 82:

1. From the master Instant AP, upload the XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. file containing Option 82 specification to flash using the download-dhcpopt82 xml <URL> command. For example:

(Instant AP) #download-dhcpopt82 xml http://10.20.52.131/dhcp_option82_1.xml

 

If the XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. file is not in the specified format, then the incorrect file will not be loaded to flash. This can be checked using the show dhcp opt82 xml-config command, where the load status will be set to Success or Fail. If the load fails, the error is displayed in the output of the show dhcp opt82 xml-config command.

2. In the configuration terminal, execute the following command:

(Instant AP)(config) #dhcp option82-xml <mydhcpoption82.xml>

The XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. file is always saved in flash with the name mydhcpoption82.xml. For example:

(Instant AP)(config) # dhcp option82-xml mydhcpoption82.xml

You can see the parameters configured for Option 82 by executing the show dhcp opt82 xml-config command.

 

This command is not successful if the option82 alu parameter is enabled in any of the centralized L2 or L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profiles. If option82 alu is enabled, then disable it in the respective DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile using the no option82 parameter.

3. After the dhcp option82-xml mydhcpoption82.xml command is executed, then execute the dhcp option82 xml command in a centralized L2 or L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile configuration to apply the option82 xml configuration to the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  packets that need to be relayed from that centralized L2 or L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile.

For example:

(Instant AP)(config) # ip dhcp <profile-name>

(Instant AP)(DHCP Profile <profile-name>)# server-type <centralized>

(Instant AP)(DHCP Profile <profile-name>)# server-vlan <vlan-ID>

(Instant AP)(DHCP Profile <profile-name>) # option82 xml

4. Execute the following command if the user wants to remove global option82 configuration:

(Instant AP)(config)# no dhcp option82-xml

 

This command is not successful if there is a DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile configured with the option82 xml parameter. To remove the option82 xml configuration, go to the respective DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile and execute the no option82 command, and then execute the no dhcp option82-xml command.

If there are multiple centralized L2 or L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profiles configured, each profile can have only one type of Option 82 configured at the same time. For example, no two or more profiles can have option82 xml and option82 alu enabled at the same time.

Configuring ALU Based DHCP Option 82 Specification

1. The Alcatel based DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Option 82 configuration in a DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile is similar to the XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.-based configuration.

For example:

(Instant AP)(config)# ip dhcp <profile-name>

(Instant AP)(DHCP Profile <profile-name>)# server-type <centralized>

(Instant AP)(DHCP Profile <profile-name>)# server-vlan <vlan-ID>

(Instant AP)(DHCP Profile <profile-name>)# option82 alu

Before you configure the option82 alu parameter in any of the centralized L2 or L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profiles, ensure that no other DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile is configured with option82 xml, from the specific DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile. Disable it using the no option82 command and enure that the global XMLExtensible Markup Language. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. configuration is not enabled. Now, disable it using the no dhcp option82-xml command in configuration mode.

2. To remove ALU based Option 82 configuration , execute the no option82 command from the specific DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile.

(Instant AP)(config)# ip dhcp <profile-name>

(Instant AP)(DHCP Profile <profile-name>)# no option82

Configuring Centralized DHCP Scopes

When a centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope is configured, the following points are to be noted:

The virtual controller does not assign an IP address to the client and the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  traffic is directly forwarded to the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server.

For Centralized L2 clients, the virtual controller bridges the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  traffic to the controller over the VPNVirtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. or GREGeneric Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel. The IP address is obtained from the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server behind the controller serving the VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. or GREGeneric Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. of the client. This DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  assignment mode also allows you to add the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  option 82 to the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  traffic forwarded to the controller. You can configure up to 32 VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. IDs in a single DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile when split-tunnel is disabled. Totally 192 VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. IDs can be configured for Centralized, L2 clients, 32 VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. IDs per Centralized, L2 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope.

For Centralized L3 clients, the virtual controller acts as a DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  relay agent that forwards the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  traffic to the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server located either in the corporate or local network. The Centralized L3 VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. IP is used as the source IP. The IP address is obtained from the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server.

You can configure a centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope through the WebUI or the CLICommand-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions..

In the Old WebUI

To configure a centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope:

1. Click More > DHCP Server. The DHCP Servers window is displayed.

2. To configure a centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope, click New under Centralized DHCP Scopes. The New DHCP Scopes window is displayed.

3. To configure a centralized profile, select the profile type as Centralized, L2 or Centralized, L3 and configure the following parameters.

Table 1: Centralized DHCP Mode Configuration Parameters

Parameter

Description

Name

Enter a name for the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope.

Type

Set the type as follows:

Centralized, L2 for the Centralized L2 profile

Centralized, L3 for the Centralized L3 profile

VLAN

Specify a VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. ID. You can specify up to 32 VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. IDs for Centralized, L2. To use this subnetSubnet is the logical division of an IP network., ensure that the VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. ID specified here is assigned to an SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. profile. For more information on SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. profile configuration, see In the Old WebUI and In the Old WebUI.

Split tunnel

Set this to Enabled or Disabled for split tunnel functionality for the Centralized L2 subnetSubnet is the logical division of an IP network..

Enabling split tunnel allows a VPNVirtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. user to access a public network and a local LANLocal Area Network. A LAN is a network of connected devices within a distinct geographic area such as an office or a commercial establishment and share a common communications line or wireless link to a server. or WANWide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance. network at the same time through the same physical network connection. For example, a user can use a remote access VPNVirtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. software client connecting to a corporate network using a home wireless network. The user with split tunneling enabled is able to connect to file servers, database servers, mail servers, and other servers on the corporate network through the VPNVirtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. connection. When the user connects to Internet resources (websites, FTPFile Transfer Protocol. A standard network protocol used for transferring files between a client and server on a computer network. sites, and so on), the connection request goes directly to the gatewayGateway is a network node that allows traffic to flow in and out of the network. provided by the home network. The split-DNSDomain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. functionality intercepts DNSDomain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. requests from clients for non-corporate domains (as configured in Enterprise Domains list) and forwards to the Instant AP's own DNSDomain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. server.

When split-tunnel is disabled, all the traffic including the corporate and Internet traffic is tunneled irrespective of the routing profile specifications. If the GREGeneric Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel is down and when the corporate network is not reachable, the client traffic is dropped.

DHCP relay

If you are configuring a Centralized L2 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile, you can select Enabled to allow the Instant APs to intercept the broadcast packets and relay DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  requests to the centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server.

NOTE: The DHCP relay option is not available for Centralized L3 profile configuration.

Helper address

Specify the IP address of the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server.

NOTE: For Centralized L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profiles, the Helper address option is displayed only when DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  relay is enabled.

VLAN IP

Specify the Centralized L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  subnetSubnet is the logical division of an IP network. gatewayGateway is a network node that allows traffic to flow in and out of the network. IP.

VLAN Mask

Specify the subnetSubnet is the logical division of an IP network. mask of the Centralized L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  subnetSubnet is the logical division of an IP network. gatewayGateway is a network node that allows traffic to flow in and out of the network. IP.

Option 82

Select Alcatel to enable DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Option 82 and allow clients to send DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  packets with the Option 82 string. The Option 82 string is available only in the Alcatel format. The Alcatel format for the Option 82 string consists of the following:

Remote Circuit ID; X AP-MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. ; SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network.; SSID-Type

Remote Agent; X IDUE-MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network.

NOTE: The Option 82 string is specific to Alcatel and is not configurable.

4. Click OK.

5. Click OK in the DHCP Servers window.

In the New WebUI

To configure a centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope:

1. Navigate to the Configuration > DHCP Server page.

2. To configure a centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope, click + under Centralized DHCP Scopes.

3. To configure a centralized profile, select the profile type as Centralized,L2 or Centralized,L3 and configure the following parameters.

Table 2: Centralized DHCP Mode Configuration Parameters

Parameter

Description

Name

Enter a name for the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  scope.

Type

Set the type as follows:

Centralized,L2 for the Centralized L2 profile

Centralized,L3 for the Centralized L3 profile

VLAN

Specify a VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. ID. To use this subnetSubnet is the logical division of an IP network., ensure that the VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN. ID specified here is assigned to an SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. profile. For more information on SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. profile configuration, see In the Old WebUI and In the Old WebUI.

Split tunnel

Click the toggle switch depending on whether you want to enable or disable the split tunnel functionality for the Centralized L2 subnetSubnet is the logical division of an IP network..

Enabling split tunnel allows a VPNVirtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. user to access a public network and a local LANLocal Area Network. A LAN is a network of connected devices within a distinct geographic area such as an office or a commercial establishment and share a common communications line or wireless link to a server. or WANWide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance. network at the same time through the same physical network connection. For example, a user can use a remote access VPNVirtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. software client connecting to a corporate network using a home wireless network. The user with split tunneling enabled is able to connect to file servers, database servers, mail servers, and other servers on the corporate network through the VPNVirtual Private Network. VPN enables secure access to a corporate network when located remotely. It enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security, and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two. connection. When the user connects to Internet resources (websites, FTPFile Transfer Protocol. A standard network protocol used for transferring files between a client and server on a computer network. sites, and so on), the connection request goes directly to the gatewayGateway is a network node that allows traffic to flow in and out of the network. provided by the home network. The split-DNSDomain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. functionality intercepts DNSDomain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. requests from clients for non-corporate domains (as configured in Enterprise Domains list) and forwards to the Instant AP's own DNSDomain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. server.

When split-tunnel is disabled, all the traffic including the corporate and Internet traffic is tunneled irrespective of the routing profile specifications. If the GREGeneric Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel is down and when the corporate network is not reachable, the client traffic is dropped.

DHCP relay

If you are configuring a Centralized L2 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile, click the the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  relay toggle switch to allow the Instant APs to intercept the broadcast packets and relay DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  requests to the centralized DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server.

NOTE: The DHCP relay option is not available for Centralized L3 profile configuration.

Helper address

Specify the IP address of the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  server.

NOTE: For Centralized L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profiles, the Helper address option is displayed only when DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  relay is enabled.

VLAN IP

Specify the Centralized L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  subnetSubnet is the logical division of an IP network. gatewayGateway is a network node that allows traffic to flow in and out of the network. IP.

VLAN Mask

Specify the subnetSubnet is the logical division of an IP network. mask of the Centralized L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  subnetSubnet is the logical division of an IP network. gatewayGateway is a network node that allows traffic to flow in and out of the network. IP.

Option 82

Select Alcatel to enable DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Option 82 and allow clients to send DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  packets with the Option 82 string. The Option 82 string is available only in the Alcatel format. The Alcatel format for the Option 82 string consists of the following:

Remote Circuit ID; X AP-MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. ; SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network.; SSID-Type

Remote Agent; X IDUE-MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network.

NOTE: The Option 82 string is specific to Alcatel and is not configurable.

4. Click OK.

5. Click Save in the DHCP Servers window.

The following table describes the behavior of the DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  Relay Agent and Option 82 in the Instant AP.

Table 3: DHCP Relay and Option 82

DHCP Relay

Option 82

Result

Enabled

Enabled

DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  packet relayed with the ALU-specific Option 82 string

Enabled

Disabled

DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  packet relayed without the ALU-specific Option 82 string

Disabled

Enabled

DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  packet not relayed, but broadcast with the ALU-specific Option 82 string

Disabled

Disabled

DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  packet not relayed, but broadcast without the ALU-specific Option 82 string

In the CLI

To configure a Centralized L2 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile:

(Instant AP)(config)# ip dhcp <profile-name>

(Instant AP)(DHCP Profile <profile-name>)# server-type <centralized>

(Instant AP)(DHCP Profile <profile-name>)# server-vlan <vlan-ID>

(Instant AP)(DHCP Profile <profile-name>)# option82 alu

(Instant AP)(DHCP Profile <profile-name>)# disable-split-tunnel

To configure a Centralized L3 DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  profile:

(Instant AP)(config)# ip dhcp <profile-name>

(Instant AP)(DHCP Profile <profile-name>)# server-type <centralized>

(Instant AP)(DHCP Profile <profile-name>)# server-vlan <vlan-ID>

(Instant AP)(DHCP Profile <profile-name>)# dhcp-relay

(Instant AP)(DHCP Profile <profile-name>)# dhcp-server <DHCP-relay-server>

(Instant AP)(DHCP Profile <profile-name>)# vlan-ip <DHCP IP address> mask <VLAN mask>