Cisco Cisco Wireless LAN Controller Module Manuale Tecnico
Cisco Industrial Wireless 3700
Series
Series
Cisco AP iw3702
1
Any 1500 Series AP that runs 4.1 software
2
1500 OAP AP that runs 4.0 software
3
1505 Model AP that runs 4.0 software
4
1510 Model AP that runs 4.0 software
5
Any 1500 Series AP that runs 3.2 software
6
Any 2700/700/1530 Series AP that runs 7.6.120.0 or later software
7
Any 3700 Series AP that runs 7.6 or later software
.
Option 60 is included in the initial DHCP discover message that a DHCP client broadcasts in
search of an IP address. Option 60 is used by DHCP clients (LAPs in this case) in order to identify
itself to the DHCP server.
search of an IP address. Option 60 is used by DHCP clients (LAPs in this case) in order to identify
itself to the DHCP server.
If the access point is ordered with the Service Provider option (AIR-OPT60-DHCP selected), the
VCI string for that access point is different than those listed previously. The VCI string includes the
ServiceProvider option. For example, a 1260 with this option returns this VCI string: Cisco AP
c1260-ServiceProvider.
VCI string for that access point is different than those listed previously. The VCI string includes the
ServiceProvider option. For example, a 1260 with this option returns this VCI string: Cisco AP
c1260-ServiceProvider.
If the Cisco AP runs 7.0.116.0 or above (12.4 (23c) JA2 or above) and if a bootloader
environmental variable (env_vars) named DHCP_OPTION_60 exists in flash, the value is
appended to the VCI. If you order a Cisco AP with the Service Provider option, it will (by default)
include the -ServiceProvider suffix; however, you can include other values into
DHCP_OPTION_60 as well.
environmental variable (env_vars) named DHCP_OPTION_60 exists in flash, the value is
appended to the VCI. If you order a Cisco AP with the Service Provider option, it will (by default)
include the -ServiceProvider suffix; however, you can include other values into
DHCP_OPTION_60 as well.
In order to facilitate AP discovery of WLAN controllers that use DHCP Option 43, the DHCP server
must be programmed in order to return one or more WLAN controller management interface IP
addresses based on the VCI of the AP. In order to do this, program the DHCP server to recognize
the VCI for each access point type, and then define the vendor specific information.
must be programmed in order to return one or more WLAN controller management interface IP
addresses based on the VCI of the AP. In order to do this, program the DHCP server to recognize
the VCI for each access point type, and then define the vendor specific information.
On the DHCP server, the vendor specific information is mapped to VCI text strings. When the
DHCP server sees a recognizable VCI in a DHCP discover from a DHCP client, it returns the
mapped vendor specific information in its DHCP offer to the client as DHCP Option 43. On the
DHCP server , option 43 is defined in each DHCP pool (Scope) that offers IP address to the LAPs.
DHCP server sees a recognizable VCI in a DHCP discover from a DHCP client, it returns the
mapped vendor specific information in its DHCP offer to the client as DHCP Option 43. On the
DHCP server , option 43 is defined in each DHCP pool (Scope) that offers IP address to the LAPs.
RFC 2132 defines that DHCP servers must return vendor specific information as DHCP Option 43.
The RFC allows vendors to define encapsulated vendor-specific sub-option codes between 0 and
255. The sub-options are all included in the DHCP offer as type-length-value (TLV) blocks
embedded within Option 43. The definition of the sub-option codes and their related message
format is left to the vendors.
The RFC allows vendors to define encapsulated vendor-specific sub-option codes between 0 and
255. The sub-options are all included in the DHCP offer as type-length-value (TLV) blocks
embedded within Option 43. The definition of the sub-option codes and their related message
format is left to the vendors.
When DHCP servers are programmed to offer WLAN Controller IP addresses as Option 43 for
Cisco 1000 Series APs the sub-option TLV block is defined in this way:
Cisco 1000 Series APs the sub-option TLV block is defined in this way: