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cable modem t25
just bought the cable modem t25 and it has the two ethernet jack in the back and i read somewhere that if i want to use the 2nd etherent connection than i need two different ip addresses from comcast. just seeing if thats true or i can just use the two with no problem at all?
EG
Expert
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111.5K Messages
6 years ago
Never heard of a "t25", but yes. It's true.
First, check the "Rate Card" for your local area to see if that feature is even available anymore. Seems that it is being phased out;
https://www.xfinity.com/support/rate-card/
It's a PDF.
Scroll down to "Xfinity Internet" and look for "Additional IP Addresses".
If nothing is listed then it's likely to have been discontinued in your local market area.
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BruceW
Gold Problem Solver
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26.5K Messages
6 years ago
Me either, but https://mydeviceinfo.xfinity.com/device/arris-t25-706 says it's an approved Gigabit eMTA.
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EG
Expert
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111.5K Messages
6 years ago
@BruceW Thanks !
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darkangelic
Gold Problem Solver
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2K Messages
6 years ago
Depending on the modem firmware installed, the second ethernet port can be used as a second IP node (as per above) or as a Link Aggregation Port (coupled with a compatible router or computer).
If you attempt to use both ports without configuring them properly you will get connection errors on one or both of them.
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darkangelic
Gold Problem Solver
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2K Messages
5 years ago
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