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Author Topic: HG612 vs VMG3925-B10B  (Read 445 times)

Alex Atkin UK

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HG612 vs VMG3925-B10B
« on: March 20, 2019, 05:22:23 PM »

HG612:
Code: [Select]
Discovery Phase (Initial) Band Plan
US: (6,31) (882,1193) (1984,2770)
DS: (33,857) (1218,1959) (2795,4083)
Medley Phase (Final) Band Plan
US: (6,31) (882,1193) (1984,2770)
DS: (41,857) (1218,1959) (2795,4083)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:     21813 kbps     63788 kbps
Actual Aggregate Tx Power:        3.8 dBm      13.8 dBm
====================================================================================
VDSL Band Status U0      U1      U2      U3      U4      D1      D2      D3
  Line Attenuation(dB):         3.5 15.6 23.5   N/A   N/A 8.0 19.6 31.0
Signal Attenuation(dB):         3.2 15.4 23.4   N/A   N/A 9.9 19.5 31.1
SNR Margin(dB): 8.0 6.0 6.0   N/A   N/A 6.3 6.3 6.3
TX Power(dBm): -6.4 -30.3 3.5   N/A   N/A 11.1 7.4 7.3

VMG3925-B10B V5.13(AAVF.12)C0:
Code: [Select]
Discovery Phase (Initial) Band Plan
US: (6,31) (882,1193) (1984,2770)
DS: (33,857) (1218,1959) (2795,4083)
Medley Phase (Final) Band Plan
US: (6,31) (882,1193) (1984,2770)
DS: (41,857) (1218,1959) (2795,4083)
VDSL Port Details               Upstream                Downstream
Attainable Net Data Rate:        21841 kbps              63920 kbps
Actual Aggregate Tx Power:          6.4 dBm                13.8 dBm
====================================================================================
VDSL Band Status        U0      U1      U2      U3      U4      D1      D2      D3
  Line Attenuation(dB):  4.4     16.3    26.3     N/A     N/A    8.7     20.2    33.2   
Signal Attenuation(dB):  4.1     16.1    26.2     N/A     N/A    10.7    20.1    33.2   
        SNR Margin(dB):  9.9     6.7     6.1      N/A     N/A    6.1     6.1     6.2   
        TX Power(dBm):  -6.7    -29.3    6.2      N/A     N/A    11.2    7.4     7.3   
        kl0(dBx100):    769     819       N/A     N/A     N/A   639     774     841     

HG612:
Code: [Select]
Max: Upstream rate = 21813 Kbps, Downstream rate = 63788 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 63554 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.3 6.0
Attn(dB): 13.1 0.0
Pwr(dBm): 13.8 3.8
VDSL2 framing
Bearer 0
MSGc: 18 150
B: 239 236
M: 1 1
T: 21 5
R: 0 16
S: 0.1202 0.3771
L: 15976 5410
D: 1 1
I: 240 255
N: 240 255

VMG3925-B10B:
Code: [Select]
Max:    Upstream rate = 21844 Kbps, Downstream rate = 63912 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 63904 Kbps

Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        6.1             6.4
Attn(dB):        13.8            0.0
Pwr(dBm):        13.8            6.4

                        VDSL2 framing
                        Bearer 0
MSGc:           18              150
B:              239             236
M:              1               1
T:              21              5
R:              0               16
S:              0.1195          0.3771
L:              16064           5410
D:              1               1
I:              240             255
N:              240             255


Red is HG612, Blue is VMG3925-B10B:
« Last Edit: March 20, 2019, 06:36:50 PM by Alex Atkin UK »
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Modems: 2 x VMG3925-B10B V5.13(AAVF.12)C0-jumbo
Router: i5-7200U appliance running pfSense.
ISP: Zen Unlimited Fibre 2 + Plusnet Unlimited Fibre Extra.

Alex Atkin UK

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  • Posts: 223
    • My Broadband History
Re: HG612 vs VMG3925-B10B
« Reply #1 on: March 22, 2019, 06:30:42 PM »

Plusnet vs Zen on VMG3925-B10B


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Modems: 2 x VMG3925-B10B V5.13(AAVF.12)C0-jumbo
Router: i5-7200U appliance running pfSense.
ISP: Zen Unlimited Fibre 2 + Plusnet Unlimited Fibre Extra.

re0

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Re: HG612 vs VMG3925-B10B
« Reply #2 on: March 22, 2019, 10:51:52 PM »

Presumably, in your first post you tried both devices on the same pair? If so, it is apparent that the VMG3925-B10B is showing slightly more loop loss than the HG612. But otherwise, the performance is the essentially the same, within a small margin.

I experienced the same thing with 8800NL vs 8800AXLR2 with loop loss (I believe the former was worse), though to a smaller degree. Point stands, variance between modems is normal. I have another 8800NL spare that I could try, and I have a feeling it is the better one (one that shows less loop loss). Not right now, but perhaps in the future.

Though, the QLN baffles me the most. ???
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Zen Unlimited Fibre 4 G.fast (330/50 Mbps sync, 352/60 Mbps attainable) @ ~200m - Zyxel XMG3927-B50A
Three 4G LTE with Huawei B525 (peak down/up ~75/~27 Mbps, typ. 35-55 Mbps down)

Alex Atkin UK

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  • Posts: 223
    • My Broadband History
Re: HG612 vs VMG3925-B10B
« Reply #3 on: March 23, 2019, 11:04:22 PM »

I'm disappointed its not working any better than the HG612 but at least they are newer firmware with potential for updates, more flexible for reuse later, a nicer colour (black just kinda blends into the background) and the LEDs are a nice shade of green rather than the eye-burning green the ECI/HG612 use.
Logged
Modems: 2 x VMG3925-B10B V5.13(AAVF.12)C0-jumbo
Router: i5-7200U appliance running pfSense.
ISP: Zen Unlimited Fibre 2 + Plusnet Unlimited Fibre Extra.

re0

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  • Posts: 550
Re: HG612 vs VMG3925-B10B
« Reply #4 on: March 24, 2019, 12:54:48 AM »

Diminishing or even negative returns while a hole burns in your pocket as you seek the performant unit? :P Been there, done that. Though since FTTC I get full 80/20 with no stability issues so I don't faff anymore.

Perhaps not all is lost as the Zyxel may actually be more stable, with more uses and newer firmware as you mentioned. Plus the HG612 has aged, become discontinued. Would be interesting to see if the error rate is lower over a period of time.
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Zen Unlimited Fibre 4 G.fast (330/50 Mbps sync, 352/60 Mbps attainable) @ ~200m - Zyxel XMG3927-B50A
Three 4G LTE with Huawei B525 (peak down/up ~75/~27 Mbps, typ. 35-55 Mbps down)

Alex Atkin UK

  • Reg Member
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  • Posts: 223
    • My Broadband History
Re: HG612 vs VMG3925-B10B
« Reply #5 on: March 24, 2019, 01:51:05 AM »

Yeah I didn't really keep records of error rate, although I do have automated hourly logs from telnet so theoretically I could work it out manually checking comparable uptimes.  Not much chance I can be bothered though. ;)

Not sure it would tell much anyway as the load is now split across both connections unevenly (I push bulk traffic over PlusNet exclusively leaving Zen for more responsive browsing, streaming, etc) so naturally I'd expect more errors on whichever line is most heavily loaded at each moment.

The only load-balanced connections are my main PC, laptop and games consoles - where the combined speed is useful for downloading games.  I didn't want say my mum to trip up on a website that doesn't like the IP switching, although I haven't found one yet.  (a good website shouldn't judge sessions by IP but apparently some banks still do for "security")
Logged
Modems: 2 x VMG3925-B10B V5.13(AAVF.12)C0-jumbo
Router: i5-7200U appliance running pfSense.
ISP: Zen Unlimited Fibre 2 + Plusnet Unlimited Fibre Extra.