Re: [uknof] Cisco 887VA "golden config" (for home)
On 16/05/2022 15:03, Tom Storey wrote: Might be about time to swap it out for something else. Ive been meaning to throw a Juniper box in, maybe this is just the motivation I need. :-) Incidentally, the Zen Fritz!box (7530 in my case) does an excellent job of identifying interference faults, if you check the logging. It picked-up on the bad slave wiring in my new house, and also later told me that the continued sync drops were "possibly" as a result of PowerLine - they were. So, now I have three setup in a WiFi mesh and it is brilliant. Given how good these boxes are, and how easy they are to use/mesh together, I can't even contemplate mucking about with Cisco VDSL firmwares and obtuse config lines while I'm not being paid to do so :D -- Tom
Re: [uknof] Cisco 887VA "golden config" (for home)
Hi Tom, I gather you have considered asking your ISP and/or BT to perform line tests from outside? Second: this is a old device with end of life in 2014. Have you considered recycling it? I've seen my fair share of access devices fail over the years due to capacitor & resistor tolerance problems which I wasted time on because I thought there was a config problem of some sort. CISCO ain't no longer bomb-proof US made AGS+ Best, Olivier On 15/05/2022 15:21, Tom Storey wrote: Hi Chris, Been way too long for me as well with this kind of stuff. :-) No outages that I am aware of, and as far as I know nothing has been swapped in the cabinet - but I dont exactly keep a daily record of activity around it. There has been cable pulling in nearby streets in recent weeks, although my dropouts seemed to coincide more so with some tiling work that I had done. The old socket and wiring was sitting on the floor of the utility cupboard, and was moved out of the way, but nothing appears to be damaged in any way, so may just be coincidental. Replacing the socket had been on my list of things to do for a long time, so I finally got around to that but even removing all of the old wiring and terminal blocks and having the lead in cable terminate directly on the new socket hasnt helped. Things have been much more stable with the HG612, but I still had a dropout overnight. Looks like Im already using the latest and greatest VDSL firmware too. Doh. Tom On Sun, 15 May 2022 at 11:40, Chris Russell wrote: Wonder if anyone has a golden config they could share for a Cisco 887VA hooked up to a BT line - I guess what is referred to as "Fibre". Zen is the retailer. Up until about a week ago mine had been running rock solid, nary a dropout to be known. Now it seems it cant hold a connection for more than a couple of hours. Master socket was replaced (or rather, installed) with one that has a filter faceplate, because the old incoming wiring was quite janky using screw terminals and all. Below is a snippet of my config for reference, any pointers would be appreciated to restore my once rock solid internet without needing to daisy chain devices. Been a while but from memory, config looks ok. Was there any outages and possible DSLAM change ? there used to be weird incompatibility with some Cisco DSL* interfaces whereas you had to update the firmware - checking latest might not hurt ? Chris
Re: [uknof] Cisco 887VA "golden config" (for home)
Hi Ruairi, I wasnt aware it was sensitive to electrical noise etc. Other than replacing the master socket, nothing else electrical related changed around it when the dropouts started. Im fairly sure that PPPoE drops are due to it losing sync - it happens every time and I can observe that through the logs/"show controller VDSL 0" etc. Might be about time to swap it out for something else. Ive been meaning to throw a Juniper box in, maybe this is just the motivation I need. :-) On Mon, 16 May 2022 at 14:44, Ruairi Carroll wrote: > > > On Sun, 15 May 2022 at 13:26, Tom Storey wrote: > >> Hey James, >> >> Cheers, will take a look through it to see if theres anything I can use. >> >> I'll try enabling the training log at some point. My VDSL firmware >> already seems to be the latest Cisco has to offer unfortunately. >> >> I was watching things like the SNR via "show controller VDSL 0" to see >> how that was behaving, and saw it bouncing around a bit, hitting 1dB at its >> lowest point, but mostly sitting around 4-6dB. Best I managed was 9dB >> immediately after replacing the socket, but that went back down to 4-6 soon >> afterwards. >> >> Strangely the HG612 reports 22dB as the SNR ... not sure how accurate >> that is... >> > > Hey Tom, > > Check for other sources of electrical noise on either the phone loop, or > the electrical loop. The 8xx was always cantankerous when it came to xDSL, > lacking support for so many DSLAMs you'd find in much cheaper, off the > shelf models. It was also sensitive to various sources of electrical noise. > > If finding/isolating sources of noise does not help, as James has > suggested, eyeball your PPP(oE) debug logs and find out why the connection > is bouncing. > > /Ruairi > > > >> >> On Sun, 15 May 2022 at 11:32, James Bensley >> wrote: >> >>> Hi Tom, >>> >>> I was using this on an 897 with Sky FTTC (via Openreach): >>> >>> https://null.53bits.co.uk/uploads/hardware/Cisco%20897VAW-E-K9%20show-run.txt >>> >>> A good tip is to ensure that you have the latest VDSL firmware from >>> cisco.com on your device. Also maybe enable the ADSL/VDSL controller >>> training log, and as much debugging as you can, so you can see why >>> it's dropping and when. >>> >>> conf t >>> controller VDSL 0 >>> training log filename flash:vdsl.log >>> end >>> >>> debug ppp * >>> >>> Also look under the "show controller x" commands. >>> >>> Cheers, >>> James. >>> >>
Re: [uknof] Cisco 887VA "golden config" (for home)
Hey James, Cheers, will take a look through it to see if theres anything I can use. I'll try enabling the training log at some point. My VDSL firmware already seems to be the latest Cisco has to offer unfortunately. I was watching things like the SNR via "show controller VDSL 0" to see how that was behaving, and saw it bouncing around a bit, hitting 1dB at its lowest point, but mostly sitting around 4-6dB. Best I managed was 9dB immediately after replacing the socket, but that went back down to 4-6 soon afterwards. Strangely the HG612 reports 22dB as the SNR ... not sure how accurate that is... On Sun, 15 May 2022 at 11:32, James Bensley wrote: > Hi Tom, > > I was using this on an 897 with Sky FTTC (via Openreach): > > https://null.53bits.co.uk/uploads/hardware/Cisco%20897VAW-E-K9%20show-run.txt > > A good tip is to ensure that you have the latest VDSL firmware from > cisco.com on your device. Also maybe enable the ADSL/VDSL controller > training log, and as much debugging as you can, so you can see why > it's dropping and when. > > conf t > controller VDSL 0 > training log filename flash:vdsl.log > end > > debug ppp * > > Also look under the "show controller x" commands. > > Cheers, > James. >
Re: [uknof] Cisco 887VA "golden config" (for home)
Hi Chris, Been way too long for me as well with this kind of stuff. :-) No outages that I am aware of, and as far as I know nothing has been swapped in the cabinet - but I dont exactly keep a daily record of activity around it. There has been cable pulling in nearby streets in recent weeks, although my dropouts seemed to coincide more so with some tiling work that I had done. The old socket and wiring was sitting on the floor of the utility cupboard, and was moved out of the way, but nothing appears to be damaged in any way, so may just be coincidental. Replacing the socket had been on my list of things to do for a long time, so I finally got around to that but even removing all of the old wiring and terminal blocks and having the lead in cable terminate directly on the new socket hasnt helped. Things have been much more stable with the HG612, but I still had a dropout overnight. Looks like Im already using the latest and greatest VDSL firmware too. Doh. Tom On Sun, 15 May 2022 at 11:40, Chris Russell wrote: > >> Wonder if anyone has a golden config they could share for a Cisco 887VA >> hooked up to a BT line - I guess what is referred to as "Fibre". Zen is the >> retailer. >> >> Up until about a week ago mine had been running rock solid, nary a >> dropout to be known. Now it seems it cant hold a connection for more than a >> couple of hours. >> >> Master socket was replaced (or rather, installed) with one that has a >> filter faceplate, because the old incoming wiring was quite janky using >> screw terminals and all. >> >> Below is a snippet of my config for reference, any pointers would be >> appreciated to restore my once rock solid internet without needing to daisy >> chain devices. >> > > Been a while but from memory, config looks ok. Was there any outages > and possible DSLAM change ? there used to be weird incompatibility with > some Cisco DSL* interfaces whereas you had to update the firmware - > checking latest might not hurt ? > > Chris >
Re: [uknof] Cisco 887VA "golden config" (for home)
> > > Wonder if anyone has a golden config they could share for a Cisco 887VA > hooked up to a BT line - I guess what is referred to as "Fibre". Zen is the > retailer. > > Up until about a week ago mine had been running rock solid, nary a dropout > to be known. Now it seems it cant hold a connection for more than a couple > of hours. > > Master socket was replaced (or rather, installed) with one that has a > filter faceplate, because the old incoming wiring was quite janky using > screw terminals and all. > > Below is a snippet of my config for reference, any pointers would be > appreciated to restore my once rock solid internet without needing to daisy > chain devices. > Been a while but from memory, config looks ok. Was there any outages and possible DSLAM change ? there used to be weird incompatibility with some Cisco DSL* interfaces whereas you had to update the firmware - checking latest might not hurt ? Chris
Re: [uknof] Cisco 887VA "golden config" (for home)
Hi Tom, I was using this on an 897 with Sky FTTC (via Openreach): https://null.53bits.co.uk/uploads/hardware/Cisco%20897VAW-E-K9%20show-run.txt A good tip is to ensure that you have the latest VDSL firmware from cisco.com on your device. Also maybe enable the ADSL/VDSL controller training log, and as much debugging as you can, so you can see why it's dropping and when. conf t controller VDSL 0 training log filename flash:vdsl.log end debug ppp * Also look under the "show controller x" commands. Cheers, James.
[uknof] Cisco 887VA "golden config" (for home)
Hi all, Wonder if anyone has a golden config they could share for a Cisco 887VA hooked up to a BT line - I guess what is referred to as "Fibre". Zen is the retailer. Up until about a week ago mine had been running rock solid, nary a dropout to be known. Now it seems it cant hold a connection for more than a couple of hours. Master socket was replaced (or rather, installed) with one that has a filter faceplate, because the old incoming wiring was quite janky using screw terminals and all. Below is a snippet of my config for reference, any pointers would be appreciated to restore my once rock solid internet without needing to daisy chain devices. FWIW an old HG612 I had laying about seems to be able to hold a connection just fine - no dropouts in the past 24 hours since I put it in as a test. The FritzBox that Zen supplied also seemed to be holding a solid connection prior to the HG612, so it seems like its something related to the Cisco. According to the VDSL stats the downstream SNR can be a bit jumpy sometimes, Ive seen it go as low as 1dB, but mostly sitting around 4-6dB. I do see a few FEC and CRC errors from time to time as well (including on the HG612). Thanks --- controller VDSL 0 operating mode vdsl2 firmware filename flash:VA_A_39m_B_38h3_24h_o.bin modem UKfeature ! interface Ethernet0 mtu 1508 no ip address ! interface Ethernet0.101 encapsulation dot1Q 101 pppoe enable group global pppoe-client dial-pool-number 1 pppoe-client ppp-max-payload 1500 !
