PPPoE with additional public routed subnet
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The situation described in this thread https://community.tp-link.com/en/business/forum/topic/618974 whereby an ISP requires a PPPoE primary WAN connection and provides an additional routed subnet, is not an uncommon scenario in the UK when Business customers subscribe to a block of IPV4 addresses.
The ISP uses the PPPoE connection to provide the primary IP address and routes the additional subnet on the same connection.
Given that the ER605 is marketed as a Business class router one would expect it to be able to handle this scenario.
Since the solution outlined in the linked thread is apparently not acceptable since the design of the router does not permit disabling of NAT, it would therefore be assumed that this scenario should be configurable using One-to-One NAT perhaps ?
Given that the linked thread is now locked for further comment could @Clive_A possibly advise how the ER605 should be configured for this scenario ?
Thank you
Yes, I locked the thread because I followed the advice given of "seeking other solutions" and flashed the ER605 with OpenWRT 23.05-rc2 proper, instead of TP-Link's own 14.07-based one.
Well, the issue is, one-to-one nat cannot be used with a PPPoE-connection with TP-Link's firmware, for some reason. I Already tried that.
With OpenWRT proper, you can go 2 routes;
1) Add all 8 (yes, you probably can use all 8) by assigning each IP as a /32 alias on the WAN-interface and go from there
2) Use normal routing and assign the first usable IP as /29 as alias on the LAN-interface and set up routing and firewall rules
This feature is currently missing from TP-Link's firmware.
Sjon_Gerrits wrote
Yes, I locked the thread because I followed the advice given of "seeking other solutions" and flashed the ER605 with OpenWRT 23.05-rc2 proper, instead of TP-Link's own 14.07-based one.
Well, the issue is, one-to-one nat cannot be used with a PPPoE-connection with TP-Link's firmware, for some reason. I Already tried that.
With OpenWRT proper, you can go 2 routes;
1) Add all 8 (yes, you probably can use all 8) by assigning each IP as a /32 alias on the WAN-interface and go from there
2) Use normal routing and assign the first usable IP as /29 as alias on the LAN-interface and set up routing and firewall rules
do you have a reference or guide for 605 for flashing it to the OpenWrt you have?
thanks a lot. it's a super cool repository. this is also the link that i learned from the openwrt. that dude who created this is kinda cool. but it breaks the recovery mode, I think I am not gonna risk it.. 