Cisco Catalyst IW9167I Hardware Installation Manual page 61

Troubleshooting
Note
The AP uses the type-length-value (TLV) format for DHCP Option 43. DHCP servers must be programmed
to return the option based on the AP DHCP Vendor Class Identifier (VCI) string (DHCP Option 60). The VCI
string for the AP:
Cisco AP IW9167IH
The format of the TLV block is listed below:
• Type—0xf1 (decimal 241)
• Length—Number of controller IP addresses * 4
• Value—IP addresses of the controller management interfaces listed sequentially in hexadecimal format.
SUMMARY STEPS
1. Enter configuration mode at the Cisco IOS CLI.
2. Create the DHCP pool, including the necessary parameters such as default router and name server. A
DHCP scope example is as follows:
3. Add the option 43 line using the following syntax:
DETAILED STEPS
Step 1
Enter configuration mode at the Cisco IOS CLI.
Step 2 Create the DHCP pool, including the necessary parameters such as default router and name server. A DHCP scope example
is as follows:
Example:
ip dhcp pool <pool name>
network <IP Network> <Netmask>
default-router <Default router>
dns-server <DNS Server>
Where:
Example:
<pool name> is the name of the DHCP pool, such as IW9167IH
<IP Network> is the network IP address where the controller resides, such as 10.0.15.1
<Netmask> is the subnet mask, such as 255.255.255.0
<Default router> is the IP address of the default router, such as 10.0.0.1
<DNS Server> is the IP address of the DNS server, such as 10.0.10.2
Step 3
Add the option 43 line using the following syntax:
Example:
option 43 hex <hex string>
DHCP Option 43 is limited to one AP type per DHCP pool. You must configure a separate DHCP pool for
each AP type.
Cisco Catalyst IW9167I Heavy Duty Access Point Hardware Installation Guide
Configuring DHCP Option 43
53