option (dhcpv4-pool-config)

Configures raw DHCP options. Use this option to define the string/ip value of the option configured in the DHCP server policy context.

Supported in the following platforms:

• Access Points — AP7502, AP7522, AP7532, AP7562, AP7602, AP7612, AP7622, AP7632, AP7662, AP8163, AP8432, AP8533
• Wireless Controller — RFS4010
• Service Platforms — NX5500, NX7500, NX9500, NX9600, VX9000

Syntax

option <OPTION-NAME> [<DHCP-OPTION-IP>|<DHCP-OPTION-ASCII>]

Parameters

option <OPTION-NAME> [<DHCP-OPTION-IP>|<DHCP-OPTION-ASCII>]

USage Guidelines

Note

An option name in ASCII format accepts a backslash (\) as an input, but is not displayed in the output. Use the show > running > config command to view the output. Use a double backslash to represent a single backslash.

Access point adoption

Extreme Networks' access points support DHCP option 191 to automate controller discovery and provide a plug-n-play deployment experience. The DHCP option 191 allows zero-touch deployment of access points in layer 3 environments when DHCP is utilized.

option	format	Example
191	ASCII / String	pool1=<controller-ip-hostname>,pool2=<controller-ip-hostname>;level=<level>; udp-port=<port>;hello-interval=<value>;adjacency-hold-time=<value>

Parameter Descriptions

pool1 | pool2	Determines the order in which controllers are discovered. If both controllers are defined as pool1 the access point will simultaneously attempt to discover both controllers. If pool1 and pool2 are defined, the access point will attempt discovery of the controller defined in pool2 if the controller defined in pool1 is unreachable.
<controller-ip-hostname>	Defines the IP address or hostnames of the controller(s). Up to two controller IP addresses or hostnames can be defined per pool which must be separated by a comma.
level=<1|2>	Determines the MINT link level (1 or 2) the access points establish to the controllers. Level 1 MINT links should be used for access points adopting to local site controllers. Where as Level 2 MINT links should be used for access points adopting to centralized controllers. If this parameter and value is omitted from the option 191 string, the access points will establish a level 1 MINT link to a controller.
udp-port=<port>	Optionally defines a non-default UDP port used for MINT encapsulation over IPv4 (default 24576). If the default MINT UDP port is changed in the default mint policy on the controller, this parameter and value must be included in the option 191 string so that the access points use the correct UDP port to establish their MINT links. If the UDP ports do not match, adoption fails. If this parameter and value is omitted from the option 191 string, the access points establishes a MINT link using the default UDP port 24576.
hello-interval=<value>	Optionally defines the interval between hello packets exchanged between the controllers and access points (default 15 seconds).
adjacency-hold-time=<value>	Optionally defines the maximum period since the last MINT hello packet was received before the MINT link is considered down (default 45 seconds). Note: We recommend that the hello-interval value be set to 1/3rd the adjacency-hold-time value. For example if the adjacency-hold-time value is set to 60 seconds, the hello-interval must be set to 20 seconds. Note: Any hello-interval and adjacency-hold-time values assigned from DHCP option 191 will supersede any values assigned to a device profile or directly to a device as an override.

Controller adoption

Extreme Networks' controllers support DHCP option 192 to automate site-controller discovery and provide a plug-n-play deployment experience. The DHCP option 192 allows zero-touch deployment of site-controllers in layer 3 environments when DHCP is utilized.

Parameter Descriptions

pool1 | pool2	Determines the order in which centralized controllers are discovered. If both controllers are defined as pool1 the site-controller will simultaneously attempt discovery against both Centralized Controllers. If pool1 and pool2 are defined, the Site Controller will only attempt discovery of the Centralized Controller defined in pool2 if the Centralized Controller defined in pool1 is unreachable.
<controller-ip-hostname>	Defines the IP address or hostnames of the controller(s). Up to two controller IP addresses or hostnames can be defined per pool, separated by a comma.
level=<2>	Determines the MINT link level the site controller establishes with the centralized controller. This will be Level 2 for all ONEVIEW deployments.
udp-port=<port>	Optionally defines a non-default UDP port used for MINT encapsulation over IPv4 (default 24576). If the default MINT UDP port is changed in the default mint policy on the controller, this parameter and value must be included in the option 192 string so that controllers use the correct UDP port to establish their MINT links. If the UDP ports do not match adoption fails. If this parameter and value is omitted from the option 192 string, the controller establishes a MINT link using the default UDP port 24576.
hello-interval=<value>	Optionally defines the interval between hello packets exchanged between the centralized controller and the site controllers (default 15 seconds).
adjacency-hold-time=<value>	Optionally defines the maximum period since the last MINT hello packet was received before the MINT link is considered down (default 45 seconds). Note: We recommend that the hello-interval value be set to 1/3rd the adjacency-hold-time value. For example if the adjacency-hold-time value is set to 60 seconds, the hello-interval must be set to 20 seconds. Note: Any hello-interval and adjacency-hold-time values assigned from DHCP option 192 will supersede any values assigned to a device profile or directly to a device as an override. Note: DHCP Option 192 is supported in WiNG 5.5 or higher.

Examples

rfs4000-229D58(config-dhcp-policy-test-pool-testPool)#option option1 157.235.208.80

rfs4000-229D58(config-dhcp-policy-test-pool-testPool)#show context
 dhcp-pool testPool
  address 192.168.13.4 class dhcpclass1
  ddns server 192.168.13.9
  ddns multiple-user-class
  excluded-address range 192.168.13.25 192.168.13.28
  netbios-node-type b-node
  dns-server 192.168.13.19
  netbios-name-server 192.168.13.25
  option option1 157.235.208.80
rfs4000-229D58(config-dhcp-policy-test-pool-testPool)#

Related Commands