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Author Topic: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)  (Read 88146 times)

spring

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #105 on: May 18, 2018, 10:30:39 AM »

Is this what you wanted? o.o
Code: [Select]
ping cloudflare.com -l 1472 -f

Pinging cloudflare.com [198.41.214.162] with 1472 bytes of data:
Reply from 198.41.214.162: bytes=1472 time=15ms TTL=58
Reply from 198.41.214.162: bytes=1472 time=15ms TTL=58
Reply from 198.41.214.162: bytes=1472 time=14ms TTL=58
Reply from 198.41.214.162: bytes=1472 time=14ms TTL=58

Ping statistics for 198.41.214.162:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 14ms, Maximum = 15ms, Average = 14ms
Code: [Select]
ping cloudflare.com -l 1473 -f

Pinging cloudflare.com [198.41.214.162] with 1473 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 198.41.214.162:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
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No one knows what is the taste of the void.

johnson

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #106 on: May 18, 2018, 10:35:24 AM »

Thank you!

So setting the ppp session to 1508 after the fact works fine, good to know.

I have tried making changes to the firmware to allow setting 1508 in the web interface and also remove the limits set in the pppd daemon so it should accept 1508 initially. This should allow you to set it in the web interface and have to come up correctly on boot.

I want to try it on my line first, but are you up for testing it?
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spring

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #107 on: May 18, 2018, 10:38:31 AM »

Thank you!

So setting the ppp session to 1508 after the fact works fine, good to know.

I have tried making changes to the firmware to allow setting 1508 in the web interface and also remove the limits set in the pppd daemon so it should accept 1508 initially. This should allow you to set it in the web interface and have to come up correctly on boot.

I want to try it on my line first, but are you up for testing it?
I have PPPoE which is normally 1500-8, so with baby jumbo it's 1508-8, so I have the ppp interface at 1500 (1508 wasn't able to ping 1473 bytes, and it makes sense because the jumbo limit is +8 not +16  :v ).
Thanks so much though  :baby:

I can't afford to brick my device though I mean if it's just a line test sure 0.0
« Last Edit: May 18, 2018, 10:42:00 AM by spring »
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johnson

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #108 on: May 18, 2018, 10:40:55 AM »

I'm not sure what you mean spring, I wasnt suggesting you have anything set wrong.
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spring

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #109 on: May 18, 2018, 10:43:27 AM »

I'm not sure what you mean spring, I wasnt suggesting you have anything set wrong.
If you want you can PM me and I'll try I know some people here might be jealous about the fact I might not be able to trigger any DLM on my line even if I tried lol so if you tested it's all safe but haven't let it sync on your line then sure.
However I'm very afraid, if I brick my device I'm as good as dead
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johnson

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #110 on: May 18, 2018, 10:51:09 AM »

However I'm very afraid, if I brick my device I'm as good as dead

Well I wouldnt want that on my conscience!  ;D

I have flashed it and it boots just fine, but I will test it on my line first and maybe find someone else that uses the 1312 as a modem/router to test.

Btw, even after a bad flash the 1312 can be recovered without a serial connection but holding the reset button in while booting for ~20 seconds. The light flashes red then goes solid red, you wait ~1 minute and then you can upload a working firmware as the boot loader has a build in web server.
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spring

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #111 on: May 18, 2018, 10:52:46 AM »

Well I wouldnt want that on my conscience!  ;D

I have flashed it and it boots just fine, but I will test it on my line first and maybe find someone else that uses the 1312 as a modem/router to test.

Btw, even after a bad flash the 1312 can be recovered without a serial connection but holding the reset button in while booting for ~20 seconds. The light flashes red then goes solid red, you wait ~1 minute and then you can upload a working firmware as the boot loader has a build in web server.
How bad of a flash? The worst possible one as well? Sure I'll test.... the loader is uploaded at 192.168.1.1 ?
Almost everyone here triggers DLM if they start testing so it costs me nothing from that aspect even if you asked me 10 times just today I would
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johnson

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #112 on: May 18, 2018, 10:56:58 AM »

I have to say I have not bricked it to test, but the flashing procedure doesnt seem to touch the boot loader so I can only assume it would still be functional even if you wrote all zeros to the area where the kernel and filesystem should be.
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spring

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #113 on: May 18, 2018, 10:57:44 AM »

I have to say I have not bricked it to test, but the flashing procedure doesnt seem to touch the boot loader so I can only assume it would still be functional even if you wrote all zeros to the area where the kernel and filesystem should be.
Why do people say "I think I'll brick my B10A today" then? xD 
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No one knows what is the taste of the void.

johnson

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #114 on: May 18, 2018, 10:58:12 AM »

Almost everyone here triggers DLM if they start testing so it costs me nothing from that aspect even if you asked me 10 times just today I would

How come your line is not affected?
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spring

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #115 on: May 18, 2018, 10:59:32 AM »

How come your line is not affected?
DLM doesn't have to work and if it does that's fine anyway if I re-sync up to at least 5 times a day nothing happens and I have 5 to go today [if not 100  :lol:]
In the past when I had ADSL, if I resynced 20 times the same day the DLM didn't notice a thing  :lol:

It must be that it takes measures only when actually needed :v
My line conditions were never "changing", and the kind of faults I had on ADSL were complete loss of sync for hours at just one raindrop at a time sometimes 16 hours per day or even further in the past 23 hours per day, or that I had to pick up the phone forever or else there was no sync. There were some magic years with "no issues", but since I've had VDSL it's all well as I'm finally not 3000m but 100m away and my line isn't old, since our in-building phone wire got cut half a year ago or more don't remember, I have a brand new line that's never been used because the guy that cut our wire (among every other of the 30 phone wires in the box) chose our line, but we didn't go back to the line that was stolen from us, we were hooked up with a new one that happend to be free to use at the time. So we got the new neighbours line instead  >:D
« Last Edit: May 18, 2018, 11:40:30 AM by spring »
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johnson

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #116 on: May 18, 2018, 01:11:16 PM »

Wish I could accidentally cut my line and have new copper installed!  ;D

No dice with the firmware, tried it on my line but it still brings up the ppp1.1 interface with an MTU of 1492. I'l poke around in the source more and try and find what I'm missing that keeps it at 1492.
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hushcoden

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #117 on: May 23, 2018, 12:34:52 PM »

I've made a firmware for the VMG8924-B10A if anyone wants it. Based on the latest 1.00(AAKL.21)C0

http://bit.ly/8x24Jumbo
I think I read somewhere that 8924 and 8324 share the same firmware, so my question is: would this modified firmware work on a VMG8324-B10A as well ?
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johnson

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #118 on: May 23, 2018, 12:46:53 PM »

It will.

I have built the firmware and flashed it on an 8324, using the same PROFILE=VMG8924-B10A command used for both.

Edit: and if you are interested in being a guinea pig I have a version compiled with the latest broadcom xDSL driver A2pv6F039x1
« Last Edit: May 23, 2018, 12:52:20 PM by johnson »
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hushcoden

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Re: BCM63168 Modems that Support Baby Jumbo Frames (Bridge Mode)
« Reply #119 on: May 23, 2018, 01:31:15 PM »

It will.

I have built the firmware and flashed it on an 8324, using the same PROFILE=VMG8924-B10A command used for both.

Edit: and if you are interested in being a guinea pig I have a version compiled with the latest broadcom xDSL driver A2pv6F039x1
Great... let's see if j0hn is willing to re-share the link...  ::)
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