I recently had this working fine with this setup.
Frontier 7550 modem:
1) Enable Bridge Protocol and Bridge Mode (not routed bridge mode)
2) Disable Private LAN DHCP.
3) Disable wireless.
Connect ethernet from 7550 port to WAN Port of Linksys e2500 router.
Linksys E2500:
1) Enable PPPoE
2) Enable LAN DHCP
3) Enable wireless.
Then, recently this configuration became "unstable". I would occasionally be served a Frontier IP address (50.xx.xx.xx) on to my local LAN. And that device (say my laptop) would not be able to communicate with other local LAN device (192.168.xx.xx), but would be able to access the internet.
I was only able to get around this by re-configuring the 7550 to its normal PPPoE mode, and leaving the 7550 Private LAN DHCP disabled. The Linksys config remains the same as described above.
Frankly, this should not work (I think). How can a PPPoE modem be connected to a PPPoE router??? Anyway this seems to work perfectly now. The "Internet" light on the 7550 stays RED (thinks no internet access is available), but I can assure you, all my local LAN device can access the internet with no issues. The Linksys reports the correct WAN IP from Frontier, as it did before.
It seems this new configuration is the "new" bridging mode for the 7550.
Can someone explain:
1) what might have changed with Frontier?
2) why is my PPPoE modem to PPPoE router configuration working when i think it shouldn't?
Thanks.
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