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user_zyrmwa
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09/03/2026 9:27 PM

XFI XB8-T with Allied Telesis AT-GS970M/10PS

Switch connection is directly connected to a port in the back of XB8-T

1.  Having issues with DHCP.

2.  Devices plug into the switch is not getting a DHCP address from the XB8-T

3.  The address is APIPA 169.

Tested other Brand switches - same.

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18 days ago

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XfinityAmandaB

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3.5K Messages

18 days ago

 

user_zyrmwa, with our normal connections, you would need to ensure you are using bridge mode when having a different device manage your connections for you. Have you ensured that you have the correct settings in the Xfinity app? 

If you have a two-box setup that you are trying to use your equipment to replace a portion of, we do have to make additional adjustments on our end to enable your device to work in place of ours. 

 

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user_zyrmwa

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18 days ago

Hello and thank you for the info. 
@XfinityAmandaB 

I am simply using the switch as a L2 flat switch.  We do not need  to put it on a bridge mode.  I would like to use the xfi as the main router/modem and provide the dhcp addresses to the devices that are connected to the allied telesis switch.  I have confirmed that the switch has the right configuration.    Thank you and please advise.  

(edited)

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XfinityJeffB

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708 Messages

Our suggestion would have been bridge mode, honestly. We can try asking our engineers, and see if they have some guidance. 

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18 days ago

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EG

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18 days ago

@XfinityAmandaB @XfinityJeffB 

FYI. An Ethernet switch will pass only one IP address if the gateway is in bridge mode.

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