Welp I took a stab in the dark today and figured out why my Tivo VOX Mini with 5Ghz wireless wasn't working on my Wireless network. (Wouldn't see my main Tivo Roamio Plus). I am a Sys admin but not a network admin so this was a stab in the dark that worked! I happen to be using a Cisco Wireless Controller 2504 with Cisco 1852 Access points connected to my Netgear nighthawk R7000 router. (wifi and ssid broadcasting are turned off.) I had seen information regarding turning off IGMP snooping but it was disabled already. I had to enable Passive Clients via this link: Cisco Wireless LAN Controller Configuration Guide, Release 7.4 - Configuring Passive Clients [Cisco Wireless LAN Controller Software] - Cisco Will post steps below in case it could help someone in the future. and if the link expires. Restrictions for Passive Clients The interface associated to the WLAN must have a VLAN tagging. GARP forwarding must to be enabled using the show advanced hotspot command. Note Client ARP forwarding will not work if any one of the two scenarios, mentioned above, is not configured. The passive client feature is not supported with the AP groups and FlexConnect centrally switched WLANs. Information About Passive Clients Passive clients are wireless devices, such as scales and printers that are configured with a static IP address. These clients do not transmit any IP information such as IP address, subnet mask, and gateway information when they associate with an access point. As a result, when passive clients are used, the controller never knows the IP address unless they use the DHCP. Wireless LAN controllers currently act as a proxy for ARP requests. Upon receiving an ARP request, the controller responds with an ARP response instead of passing the request directly to the client. This scenario has two advantages: The upstream device that sends out the ARP request to the client will not know where the client is located. Power for battery-operated devices such as mobile phones and printers is preserved because they do not have to respond to every ARP requests. Since the wireless controller does not have any IP related information about passive clients, it cannot respond to any ARP requests. The current behavior does not allow the transfer of ARP requests to passive clients. Any application that tries to access a passive client will fail. The passive client feature enables the ARP requests and responses to be exchanged between wired and wireless clients. This feature when enabled, allows the controller to pass ARP requests from wired to wireless clients until the desired wireless client gets to the RUN state. Note For FlexConnect APs with locally switched WLANs, passive client feature enables the broadcast of ARP requests and the APs respond on behalf of the client. Configuring Passive Clients (GUI) Before You Begin To configure passive clients, you must enable multicast-multicast or multicast-unicast mode. Step 1 Choose Controller > General to open the General page. Step 2 From the AP Multicast Mode drop-down list, choose Multicast. The Multicast Group Address text box is displayed. Step 3 In the Multicast Group Address text box, enter the IP address of the multicast group. I used - 126.96.36.199 (this does not matter what ip scheme you are using for DHCP!) Step 4 Click Apply. Step 5 Enable global multicast mode as follows: 1.Choose Controller > Multicast. 2.Check the Enable Global Multicast Mode check box. Enabling the Multicast-Multicast Mode (GUI) Before You Begin To configure passive clients, you must enable multicast-multicast or multicast-unicast mode. Step 1 Choose Controller > General to open the General page. Step 2 Choose one of the following options from the AP Multicast Mode drop-down list: Unicast—Configures the controller to use the unicast method to send multicast packets. This is the default value. Multicast—Configures the controller to use the multicast method to send multicast packets to a CAPWAP multicast group. Step 3 From the AP Multicast Mode drop-down list, choose Multicast. The Multicast Group Address text box is displayed. Note It is not possible to configure the AP multicast mode for Cisco Flex 7500 Series controllers because only unicast is supported. Step 4 In the Multicast Group Address text box, enter the IP address of the multicast group. Step 5 Click Apply. Step 6 Enable global multicast mode as follows: Choose Controller > Multicast. Check the Enable Global Multicast Mode check box. Enabling the Global Multicast Mode on Controllers (GUI) Step 1 Choose Controller > Multicast to open the Multicast page. Note The Enable IGMP Snooping text box is highlighted only when you enable the Enable Global Multicast mode. The IGMP Timeout (seconds) text box is highlighted only when you enable the Enable IGMP Snooping text box. Step 2 Select the Enable Global Multicast Mode check box to enable the multicast mode. This step configures the controller to use the multicast method to send multicast packets to a CAPWAP multicast group. Note It is not possible to configure Global Multicast Mode for Cisco Flex 7500 Series Controllers. Step 3 Select the Enable IGMP Snooping check box to enable the IGMP snooping. The default value is disabled. (I did not do this step!) Step 4 In the IGMP Timeout text box to set the IGMP timeout, enter a value between 30 and 7200 seconds. Step 5 Click Apply to commit your changes. Enabling the Passive Client Feature on the Controller (GUI) Step 1 Choose WLANs > WLANs > WLAN ID to open the WLANs > Edit page. By default, the General tab is displayed. Step 2 Choose the Advanced tab. Step 3 Select the Passive Client check box to enable the passive client feature. Step 4 Click Apply to commit your changes.