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Do NOT post your private starlink information and/or Billing information on this forum - There is 200% no need to post your private information for assistance.

Starlink-Gen2 compatibility issue with 2.5G port router


Asus NO1
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We found a compatibility issue on the Starlink-Gen2, (rectangular user terminal), seems that the Starlink router/ethernet adapter have some compatibility issues with the 2.5G ethernet port, some routers that support 2.5/10G ethernet port can't work with Starlink-Gen2 under 1000Mbps full negotiation speed.


If you add a 1G switch between the Starlink router/ethernet adapter and 2.5G router, the Internet access works, but if you remove the switch, the Internet will be unavailable.
Case1: Starlink router---ethernet adapter---1Gswitch---1000Mbps full--2.5G router (work normally)
Case2: Starlink router---ethernet adapter--1000Mbps full--2.5G router (Don't work)
Case3: Starlink router---ethernet adapter-- force to 100Mbps full--2.5G router (Work)


After some troubleshooting, we suspect that this problem is related to the parity of the packet length, in case 2, all packets with an odd length are not forwarded by Starlink. Is there any Starlink Engineer who can help with this? We can provide the data packets to prove it.

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On 12/1/2022 at 10:31 AM, Asus NO1 said:

We found a compatibility issue on the Starlink-Gen2, (rectangular user terminal), seems that the Starlink router/ethernet adapter have some compatibility issues with the 2.5G ethernet port, some routers that support 2.5/10G ethernet port can't work with Starlink-Gen2 under 1000Mbps full negotiation speed.


If you add a 1G switch between the Starlink router/ethernet adapter and 2.5G router, the Internet access works, but if you remove the switch, the Internet will be unavailable.
Case1: Starlink router---ethernet adapter---1Gswitch---1000Mbps full--2.5G router (work normally)
Case2: Starlink router---ethernet adapter--1000Mbps full--2.5G router (Don't work)
Case3: Starlink router---ethernet adapter-- force to 100Mbps full--2.5G router (Work)


After some troubleshooting, we suspect that this problem is related to the parity of the packet length, in case 2, all packets with an odd length are not forwarded by Starlink. Is there any Starlink Engineer who can help with this? We can provide the data packets to prove it.

Any Starlink engineer can help this issue?

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@Asus NO1,

This forum is not directly affiliated with Starlink. There may be a Starlink engineer on these forums... or not.

@StarlinkLeader may be able to get you connected with someone at Starlink, but that's a long shot, I think.

Sadly, there are no public contact points -- telephone numbers or email addresses -- for Starlink support and engineering.

Wish I could be more help...

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