Cisco Cisco Aironet 1310 Access Point Bridge Information Guide
option 60). This table provides the VCI string values for the different LAPs:
Q. What is the significance of the type length value (TLV) block values
with respect to DHCP option 43? How is the TLV value calculated?
with respect to DHCP option 43? How is the TLV value calculated?
A. DHCP option 43 can be enabled on the DHCP server of the Cisco IOS router using this
command:
command:
Option 43 hex <string>
The hexadecimal string in this command is assembled by concatenating the TLV values for
the option 43 sub−option.
the option 43 sub−option.
Type + Length + Value
Type is always the sub−option code 0xf1.
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Length is the number of controller management IP addresses times 4 in hex.
♦
Value is the IP address of the controller listed sequentially in hex.
♦
For example, assume that there are two controllers with management interface IP addresses
10.126.126.2 and 10.127.127.2:
10.126.126.2 and 10.127.127.2:
The type is 0xf1.
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The length is 2 * 4 = 8 = 0x08.
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The IP addresses translate to 0a7e7e02 (10.126.126.2) and 0a7f7f02 (10.127.127.2).
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Assembling the string then yields f1080a7e7e020a7f7f02. The IOS command then
added to the DHCP scope is:
added to the DHCP scope is:
option 43 hex f1080a7e7e020a7f7f02
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Q. Does the wireless LAN controller (WLC) support AP load balancing?
A. Yes, you can do AP load balancing on a WLC. Refer to Wireless LAN Controller (WLC)
Troubleshoot FAQ for more information.
Troubleshoot FAQ for more information.
Q. How do I configure wireless LAN controller (WLC) failover for LAPs?
A. Refer to the WLAN Controller Failover for Lightweight Access Points Configuration
Example for details on how to configure WLC failover.
Example for details on how to configure WLC failover.