TLR605 - Two WANS same IP

TLR605 - Two WANS same IP
TLR605 - Two WANS same IP
2022-05-20 21:58:21
Hardware Version: V1
Firmware Version:

It is well known that is not possible to change the IP in Spacex Starlink, so my question is, how the ER605 manage two wans with the same IP address? in this case two starlink that provides exactly the same IP at  two TLR605 WAN inputs.

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Re:TLR605 - Two WANS same IP
2022-05-23 12:45:14

  @evil_azrael 

 

As I know, can not set two WANs same IP, not support yet.

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Re:TLR605 - Two WANS same IP
2022-05-23 13:18:36

  @evil_azrael er605 does not support it, you can put a router beetwen one wan and er605 which would be double nat'd, but that is not pretty. If you have a pc with 2 lan ports, you should try and see how bonding would work which is probably exactly what you need. You do not need er605 for this setup on wan side, er605 does not support bonding. You could also try some some load balancer.

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Re:TLR605 - Two WANS same IP
2022-05-23 17:01:55

  @evil_azrael  So, there is no bridge mode in the starlink device ? is that what you are telling us  ? as spacex couldn't possibly be assigning the same address to all customers.. 

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Re:TLR605 - Two WANS same IP
2022-05-23 20:00:59

  @crrodriguez I never tried starlink but would assume they use internal network and their devices probably share same public ip (that is probably how their customers will be still geolocated), but internally they receive own address and you are correct, there can't be 2 devices with same ip assigned. Same is with many ISP providers, they either share ip's or lease them for connection time, some mobile providers do offer apn's which assign public ip's instead of proxy mode (internal lan ip) where as example port forwarding cant work, maybe starlink has same option and as long as they do not run out of addresses one probably could ask for assigning same ip (even if shared).

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Re:TLR605 - Two WANS same IP
2022-05-24 17:24:12

  @btx Yes, that's called CGNAT , still each customer CPE get a distinct IP address assigned from either rfc1918 or rfc6598 space. (or in some rougue ISPs by squatting valid already delegated Ip addresses space from someone else and using them "inside" the ISP network only, if you get this kind of service RUN FOREST, RUN..) This is all brought to you by folks that don't want to invest in switching to IPV6 , shame on them.

What the starlink device may do is to assign the same ip to the customer-owned device that first plugs to the internet.. in which case ambiguity will arise if you connect two UNLESS you are using virtual routing & forwarding (VRF)

 

All of this is just added complexity.. starlink could provide bridge mode.. some kind of passthrough.. 

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Re:TLR605 - Two WANS same IP
2022-05-24 17:28:52

Starlink gen2 does support bridge mode according to the interwebz. it needs an "starlink ethernet adapter" and disabling all the routing capabiltites and wifi. so there it is.

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