A technician is upgrading a legacy wireless router for a home user. After installing the new router and configuring the SSID to be the same, none of the devices will connect to the network. Which of t

The correct answer is B. MAC filtering list. When a new router is configured with the same SSID but none of the existing devices can connect, MAC address filtering is the most likely culprit. Many routers ship with MAC filtering disabled, but if it was enabled on the old router, the new router has no approved MAC list-so al

Hardware and network troubleshooting

Question

A technician is upgrading a legacy wireless router for a home user. After installing the new router and configuring the SSID to be the same, none of the devices will connect to the network. Which of the following should the technician check NEXT?

Options

AOHCP pool configuration
BMAC filtering list
CWireless protocol settings
DONS servers

How the community answered

(34 responses)

A
6% (2)
B
76% (26)
C
15% (5)
D
3% (1)

Explanation

When a new router is configured with the same SSID but none of the existing devices can connect, MAC address filtering is the most likely culprit. Many routers ship with MAC filtering disabled, but if it was enabled on the old router, the new router has no approved MAC list-so all devices are implicitly blocked. The technician should check the MAC filtering list and either disable it or add the approved device MAC addresses. Option A (DHCP pool) would affect IP address assignment after connection, not prevent the connection itself. Option C (wireless protocol settings) could matter but SSID match suggests protocol compatibility is likely fine. Option D (DNS servers) affects name resolution after a connection is established, not the connection itself.

Topics

#Wireless Networking#Troubleshooting#MAC Filtering#Network Security

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