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cable modem t25

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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?

Expert

Re: cable modem t25

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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Gold Problem Solver

Re: cable modem t25


@EG wrote: Never heard of a "t25"...

Me either, but https://mydeviceinfo.xfinity.com/device/arris-t25-706 says it's an approved Gigabit eMTA.

Expert

Re: cable modem t25

@BruceW Thanks !



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Expert

Re: cable modem t25

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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