Instructions:
– THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION
– To access the multiple-choice questions, click on the numbered box on the left of the top panel.
– There is one multiple-choice question with this task. Be sure to answer the question before selecting the Next button
Scenario:
A Cisco Wireless LAN Controller has been correctly configured for AP and wireless client access. The WLC and AP have been connected using a configured CISCO iOS switch. Unexpected results are occurring for the AP association to the WLC. Refer to the exhibits to answer the question.
The AP is unable to join the WLC.
What switch configuration will correct this problem?
A . interface vlanl
ip helper-address 10.10.10.10
B . interface vlan20
ip helper-address 10.10.10.10
C . ipdhcp pool vlanl
option 43 ascii ‘10.10.10.10’
D . ip dhcp pool vlan20
option 43 ascii ‘10.10.10.10’
E . ipdhcp pool vlanl
option 43 hex f1040a0a0a0a
F . ip dhcp pool vlan20
option 43 hex f1040a0a0a0a
Answer: F
Explanation:
Keep the following in mind when troubleshooting wireless DHCP issues:
Option 43 is used to inform the DHCP client of the WLC AP-management IP address. Use the ip dhcp pool command for VLAN 20 and enter the AP-management IP address as part of option 43.
The command format is option 43, followed by the correct IP address in hexadecimal format, as shown in the example.
If there is only one WLC management address, the Length is 04 (hex), and in this case the WLC management IP address is 10.10.10.10, which is 0a0a0a0a (hex).