Q

Visitor

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7 Messages

Sun, Nov 14, 2021 4:51 PM

Second IP address for S33

I have a s33 cable modem with the 1.2 gig service. I have spoken with tech support and used the online help. Briefly, I don’t get anything close to .2 gig service- it’s more like 300 service. My wife router is 2.5 gig capable and I use cat 8 cable. Given the slow speeds and numerous attempts to fix, I would like a second IP for the S33 1Gig port that I can then bond through wifi router. I think this would get me  close to the 1.2 gig speed I’m paying for. I understand this is being phased out but I understand that this may still be offered to businesses. My small apartment building uses Comcast for business use and I suspect there is a way to activate. I appreciate Comcast helping me with providing a second IP address. Appreciate Comcast’s help with this- not just a standard phases out but truly check to see if possible and help me get the speed I’m paying for.

EG

Expert

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91.5K Messages

2 m ago

You don't need a second WAN / public IP address from an ISP in order for LAG / LACP / link bonding to be able to function. All you need is for the equipment to be able to support it, the correct settings in the U.I's, and the correct ethernet cabling configurations. Same for dual WAN setups. No additional public IP's are needed.

I don't believe that LAG is going to help you in this case anyway. Something else is going on. Perhaps the speeds coming from the Comcast system are slow in the first place for some reason.

For a test, what speed do you get with your wife's computer connected directly to the 2.5 gig port on the S33 cable modem (no router in the mix) ?

And BTW. If this is a business class account, then you really should be posting in their Business Class help forums. This forum is for their residential class service.

(edited)

Visitor

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7 Messages

2 m ago

I just lost my entire response. Ok, all equipment is 2.5 gig ready using cat 8 cable. I will try my wife’s and two other computers later today directly connected to the router. I checked last week at lots of packet loss on bonded channel 37 downstream. Later that improved but still

some. And the number of errors

thrown was down. S/n rations later last week were in 39/40 to 44 db. Checked the tap, all was right and I retightened after disconnecting. Connecting to s33 setup page is sometimes a pain, because I have to change the subnet mask on my computers to one I haven’t seen other providers use before it will open the page. And Arris says that the subnet mask for this modem can’t be changed but I would guess Comcast could change it when it provisions the modem. Not sure that matters.  So can’t go through Archer AX6000 to check modem page of 192.168.100.1 without direct connect abs some redoing of computer network settings. It’s a real pain. And something I haven’t had to deal with for a prior provider that had fiber optic connection. About business, I am resident no business but building has commercial account I think for security services so thought that relevant if I’d I needed a second wan IP address. Some posts have that in answers. But forget that for now. Appreciate your quick response. Thank you and I will post more info shortly. 

EG

Expert

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91.5K Messages

2 m ago

Quite welcome !

.................................

Visitor

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7 Messages

2 m ago

Just want to confirm that a -2.5db 2 output port isn’t ideal for this setup? I thought taps distributed signal in a way that favors one output over the other. I went back to look at the tap/splitter today and I don’t think it’s a high quality one and certainly not a tap but -2.5 2 port splitter. To your knowledge, would that have a negative impact on my internet speed? 

Visitor

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7 Messages

2 m ago

Now I am sure I need a tap over a splitter. The run to the modem is about 1.5 feet. The run to the next apartment is probably 20 to 30 feet. Can you tell me which tap (make/model) Comcast is supposed to be installing? If only fios gigabit was offered here….

Visitor

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7 Messages

2 m ago

Here is relevant info on power, S/N, etc:

Downstream Bonded Channels

Channel ID

Lock Status

Modulation

Frequency

Power

SNR/MER

Corrected

Uncorrectables

25

Locked

QAM256

651000000 Hz

12 dBmV

41 dB

0

0

14

Locked

QAM256

585000000 Hz

11 dBmV

41 dB

0

0

15

Locked

QAM256

591000000 Hz

12 dBmV

41 dB

0

0

16

Locked

QAM256

597000000 Hz

12 dBmV

41 dB

0

0

17

Locked

QAM256

603000000 Hz

12 dBmV

41 dB

0

0

18

Locked

QAM256

609000000 Hz

12 dBmV

40 dB

0

0

19

Locked

QAM256

615000000 Hz

12 dBmV

40 dB

0

0

20

Locked

QAM256

621000000 Hz

12 dBmV

39 dB

0

0

21

Locked

QAM256

627000000 Hz

12 dBmV

40 dB

0

0

22

Locked

QAM256

633000000 Hz

12 dBmV

40 dB

0

0

23

Locked

QAM256

639000000 Hz

12 dBmV

40 dB

0

0

24

Locked

QAM256

645000000 Hz

12 dBmV

40 dB

0

0

26

Locked

QAM256

657000000 Hz

12 dBmV

41 dB

0

0

27

Locked

QAM256

663000000 Hz

12 dBmV

41 dB

0

0

28

Locked

QAM256

669000000 Hz

12 dBmV

41 dB

0

0

29

Locked

QAM256

675000000 Hz

13 dBmV

40 dB

0

0

30

Locked

QAM256

681000000 Hz

13 dBmV

41 dB

0

0

31

Locked

QAM256

687000000 Hz

13 dBmV

41 dB

0

0

32

Locked

QAM256

693000000 Hz

13 dBmV

41 dB

0

0

33

Locked

QAM256

699000000 Hz

13 dBmV

41 dB

0

0

34

Locked

QAM256

705000000 Hz

14 dBmV

41 dB

0

0

35

Locked

QAM256

711000000 Hz

14 dBmV

41 dB

0

0

36

Locked

QAM256

717000000 Hz

14 dBmV

41 dB

0

0

37

Locked

OFDM PLC

780000000 Hz

14 dBmV

41 dB

2706360

0

38

Locked

QAM256

723000000 Hz

14 dBmV

41 dB

0

0

39

Locked

QAM256

729000000 Hz

14 dBmV

41 dB

0

0

40

Locked

QAM256

735000000 Hz

14 dBmV

41 dB

0

0

41

Locked

QAM256

741000000 Hz

14 dBmV

41 dB

0

0

42

Locked

QAM256

747000000 Hz

14 dBmV

41 dB

0

0

43

Locked

QAM256

753000000 Hz

14 dBmV

41 dB

0

0

44

Locked

QAM256

759000000 Hz

15 dBmV

41 dB

0

0

45

Locked

QAM256

765000000 Hz

15 dBmV

41 dB

0

0

Upstream- only 4 channels:

Upstream Bonded Channels

Channel ID

Lock Status

US Channel Type

Frequency

Width

Power

5

Locked

SC-QAM

36500000 Hz

6400000

38.8 dBmV

6

Locked

SC-QAM

30100000 Hz

6400000

38.5 dBmV

7

Locked

SC-QAM

23700000 Hz

6400000

38.8 dBmV

8

Locked

SC-QAM

17300000 Hz

6400000

38.8 dBmV

A number of ranging response errors T3 timeouts, no response from unicast maintenance ranging,  with timing synchronization failures.

The power ranges for down and up seem low for published ranges and the s/r levels don't seem very high. 4 up channels makes me think Xfinity has provisioned the modem incorrectly, splitter vs a tap contributes some. Appreciate any help from the community volunteers and Comcast itself.

EG

Expert

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91.5K Messages

2 m ago

The downstream power is actually too high / out of spec on the higher channels. Try reversing the ports on the tap. You may not need a tap and may be better off using a splitter instead.

And "provisioning" has nothing to do with the RF power levels or the amount of multiple bonded channels.

And did you ever try that test ?

For a test, what speed do you get with your wife's computer connected directly to the 2.5 gig port on the S33 cable modem (no router in the mix) ?

Visitor

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7 Messages

2 m ago

They were horrid in the 90 mb/s range so can’t be right. Here’s a pic of the box that the hardwire Ethernet going to rest of apt use: do you know what the blue wires are for - arc1 abs arc2

thansk again for all your help. There is something up with the modem, but maybe I set up the  Archer AX6000 Incorrextlt, which is why WiFi is slow- a separate matter.
EG

Expert

 • 

91.5K Messages

2 m ago

Not much to go on with that pic seeing 2 inches of blue wire, sorry.

So if you got 90 mb/s with a direct connection to the S33 modem then the problem is likely on the WAN side connection to the Comcast system or the modem itself, not on your LAN equipment.

Perhaps you'd be better off getting a tech out to investigate. I don't believe that this forum can advise you any further. Good luck with it !

Visitor

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7 Messages

2 m ago

Thanks. I had selected 3 pics but only one uploaded. It was picture outlines of punch down termination- maybe that would have been helpful. XFinity has talked me out of coming out stating its Arris’ fault and that after things in their office Or provisioning It would improve and it has not. Thanks for your help and enjoy the week. qManJack

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