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gadafi

gadafi

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29.09.2005
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Ako nekog zanima kako se ping menja sa promenom paketa, evo mog iskustva. Radi se o Telekomu.

512/64, interleaved
ping www.google.com (209.85.129.99)
oko 95 ms

1024/128, fast (no interleaved)
ping www.google.com (209.85.129.99)
oko 61 ms
 
meni je neshto u zadnje vreme mnogo velik ping,imam 512/64 na sezamu...evo koliki je ka guglu

Ping statistics for 64.233.183.103:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss
Approximate round trip times in milli-seconds:
Minimum = 159ms, Maximum = 161ms, Average = 160ms

jel se josh nekome isto deshava?
takodje sam primetio da mi i download ide neshto sporije nego inache, uglavnom ide oko nekih 38kb/s pa se tek posle nekog vremena digne na 50kb/s shto mi se pre nije deshavalo
 
evo i meni ping katastrofa isti paket, isto NS

158ms ka google-u

meni je smetalo još kad je otišo sa 60-tak na 70-80 posle dupliranja down-a
 
Meni ka googlu 156ms PTTadsl 512/64
Pri tom mi se veza zabada svako pola sata - sat.
Ne znam dal' je do ptt-a ili do usb modema koji su mi uvalili umesto obecanog rutera.
Tek juce sam dobio, pa jos cackam
 
A što ste vi razumeli ovu temu kao šalter za žalbe? Mislim da je dobra ideja da se vidi kolika je razlika između paketa i podešavanja (interleaved ili fast).
 
Jos jedan dodatak:
SNR margina za download je bila 41 dB, a sada je 36 dB
SNR margina za upload je bila 32 dB, a sada je 6 dB

Ovih 6 dB me brine i nemam neko razumno objasnjenje za takvo ponasanje. Po svemu sudeci, za neku vecu brzinu uploada je neophodan interliving.
 
SNR margina

Izgleda da SNR margina dosta zavisi od standarda koji se izabere. Evo rezultata u attachmentu.
 

Prilozi

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Ajde ako nije problem da se pinguje sledeci server 213.248.66.170 (Ovo je bliizard-ov bnet europe server)

ADSL Sezam 1024/128 - oko 70...

Bas me zanima koliko ce imati ljudi sa razlicitim provajderima...
 
Poslednja izmena:
Telekom 1024/128

Pinging 213.248.66.170 with 32 bytes of data:

Reply from 213.248.66.170: bytes=32 time=69ms TTL=245
Reply from 213.248.66.170: bytes=32 time=78ms TTL=245
Reply from 213.248.66.170: bytes=32 time=78ms TTL=245
Reply from 213.248.66.170: bytes=32 time=78ms TTL=245
Reply from 213.248.66.170: bytes=32 time=78ms TTL=245
Reply from 213.248.66.170: bytes=32 time=78ms TTL=245
Reply from 213.248.66.170: bytes=32 time=78ms TTL=245
 
Pinging 213.248.66.170 with 32 bytes of data:

Reply from 213.248.66.170: bytes=32 time=55ms TTL=242
Reply from 213.248.66.170: bytes=32 time=54ms TTL=242
Reply from 213.248.66.170: bytes=32 time=56ms TTL=242
Reply from 213.248.66.170: bytes=32 time=56ms TTL=242

Ping statistics for 213.248.66.170:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 54ms, Maximum = 56ms, Average = 55ms


PTT 1,5mbit
 
@Santa

Wow poprilicno dobar ping, stavise odlican, koliko si udaljen od centrale, ja sam recimo na Konjarniku, a ne znam tacno gde se sezamova centrala nalazi...
 
Gadafi, ako bi bio ljubazan da nam objasnis o SNR marginama i Line Attenuation? Sta je bolje - vise ili manje dB. BAs bi mi bio fazon - draga overclockovao sam nam internet :)

@ATI FAN
Reply from 213.248.66.170: bytes=32 time=61ms TTL=244
Reply from 213.248.66.170: bytes=32 time=79ms TTL=244
Reply from 213.248.66.170: bytes=32 time=62ms TTL=244
Reply from 213.248.66.170: bytes=32 time=63ms TTL=244
Reply from 213.248.66.170: bytes=32 time=62ms TTL=244
Reply from 213.248.66.170: bytes=32 time=66ms TTL=244
Reply from 213.248.66.170: bytes=32 time=62ms TTL=244
Reply from 213.248.66.170: bytes=32 time=61ms TTL=244
Reply from 213.248.66.170: bytes=32 time=85ms TTL=244
Reply from 213.248.66.170: bytes=32 time=76ms TTL=244
Reply from 213.248.66.170: bytes=32 time=64ms TTL=244
Reply from 213.248.66.170: bytes=32 time=62ms TTL=244
Reply from 213.248.66.170: bytes=32 time=63ms TTL=244
Reply from 213.248.66.170: bytes=32 time=62ms TTL=244

Ping statistics for 213.248.66.170:
Packets: Sent = 14, Received = 14, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 61ms, Maximum = 85ms, Average = 66ms

Sinfonika (ex. Tehnicom) 1.5 mbit
 
Poslednja izmena:
Skot je napisao(la):
Gadafi, ako bi bio ljubazan da nam objasnis o SNR marginama i Line Attenuation? Sta je bolje - vise ili manje dB. BAs bi mi bio fazon - draga overclockovao sam nam internet :)
Kliknite za proširenje...

SNR predstavlja odnos snage korisnog signala i snage suma. Da bi sistem radio pri odredjenoj brzini, neophodan je odredjeni SNR (sto je veca brzina, potreban je veci SNR). SNR margin predstavlja razliku izmedju SNR-a na liniji i neophodnog SNR-a za tu brzinu prenosa. Prema tome, bolje je da bude sto vece. Teorijski bi bilo dovoljno da ta zaliha bude 0 dB, ali zbog postojanja raznih sumova i smetnji, zaliha mora da bude veca. Kazu da treba da bude bar 6 dB.

Line Attenuation je slabljenje korisnog signala od centrale do tebe. Naravno, treba da bude sto manje. U principu, sto si dalje od centrale slabljenje je vece, ali isto tako zavisi i od kvaliteta linije.
Vece slabljenje prouzrokuje manju SNR marginu, jer je snaga suma konstantna.
 
Sezam 512/64 Novi Sad

Pinging 213.248.66.170 with 32 bytes of data:

Reply from 213.248.66.170: bytes=32 time=82ms TTL=243
Reply from 213.248.66.170: bytes=32 time=81ms TTL=243
Reply from 213.248.66.170: bytes=32 time=80ms TTL=243
Reply from 213.248.66.170: bytes=32 time=80ms TTL=243
Reply from 213.248.66.170: bytes=32 time=80ms TTL=243
Reply from 213.248.66.170: bytes=32 time=79ms TTL=243
Reply from 213.248.66.170: bytes=32 time=78ms TTL=243
Reply from 213.248.66.170: bytes=32 time=111ms TTL=243
Reply from 213.248.66.170: bytes=32 time=77ms TTL=243
Reply from 213.248.66.170: bytes=32 time=77ms TTL=243
Reply from 213.248.66.170: bytes=32 time=76ms TTL=243
Reply from 213.248.66.170: bytes=32 time=82ms TTL=243
Reply from 213.248.66.170: bytes=32 time=81ms TTL=243
Reply from 213.248.66.170: bytes=32 time=81ms TTL=243
Reply from 213.248.66.170: bytes=32 time=79ms TTL=243
Reply from 213.248.66.170: bytes=32 time=79ms TTL=243
Reply from 213.248.66.170: bytes=32 time=79ms TTL=243
Reply from 213.248.66.170: bytes=32 time=78ms TTL=243
Reply from 213.248.66.170: bytes=32 time=78ms TTL=243
Reply from 213.248.66.170: bytes=32 time=77ms TTL=243

Ping statistics for 213.248.66.170:
Packets: Sent = 20, Received = 20, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 76ms, Maximum = 111ms, Average = 80ms

btw unormalio se ping danas
 
Mene brine sto je SNR na mojoj vezi na granici... :trust:

noise margin downstream: 6 db
output power upstream: 11 db
attenuation downstream: 13 db


noise margin upstream: 8 db
output power downstream: 19 db
attenuation upstream: 8 db
 
ATI FAN je napisao(la):
@Santa

Wow poprilicno dobar ping, stavise odlican, koliko si udaljen od centrale, ja sam recimo na Konjarniku, a ne znam tacno gde se sezamova centrala nalazi...
Kliknite za proširenje...

Novi Beograd, blokovi, nekoliko kilometara,

Ping statistics for 213.248.66.170:
Packets: Sent = 50, Received = 50, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 54ms, Maximum = 57ms, Average = 55ms
 
kuci - verat adsl 1024k

Statistics for 213.248.66.170:
Packets: sent=4, rcvd=4, error=0, lost=0 (0% loss) in 1.574012 sec
RTTs of replies in ms: min/avg/max: 69.978 / 73.926 / 78.316


na poslu
PING 213.248.66.170 (213.248.66.170) 56(84) bytes of data.
64 bytes from 213.248.66.170: icmp_seq=1 ttl=244 time=49.1 ms
64 bytes from 213.248.66.170: icmp_seq=2 ttl=244 time=48.6 ms
64 bytes from 213.248.66.170: icmp_seq=3 ttl=244 time=47.6 ms
64 bytes from 213.248.66.170: icmp_seq=4 ttl=244 time=47.8 ms

--- 213.248.66.170 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 148ms
rtt min/avg/max/mdev = 47.623/48.325/49.128/0.630 ms, ipg/ewma 49.476/48.763 ms
 
A koje su vam brojke za "wan adsl perfdata"

Evo mojih:

ras> wan adsl perfdata

near-end FEC error fast: 0
near-end FEC error interleaved: 0
near-end CRC error fast: 0
near-end CRC error interleaved: 0
near-end HEC error fast: 0
near-end HEC error interleaved: 0
far-end FEC error fast: 9
far-end FEC error interleaved: 0
far-end CRC error fast: 5
far-end CRC error interleaved: 0
far-end HEC error fast: 0
far-end HEC error interleaved: 0

Ovo je valjda samo za fastpath.
 
To zavisi i od doba dana kada pingujesh i od josh dosta stvari.
Evo kod mene na 256/64 wireless radi ovako:
(sent = 26)
Minimum = 48ms, Maximum = 84ms, Average = 58ms
Inace 3dNet provider (iz Panceva), a ja sam inace u Vrscu.

Uglavnom uvek mi radi kako ovako, stabilno je sada, dok kod proslog providera kako kada, nekada su pingovi po 300+, nekada ima mnogo packet loss-a, a lepo radi oko 4-5h ujutru i preko dana kada se ubode (obicno kada grmi napolju jer onda svi gase kompove, ili posle nekog prekida interneta itd...).
 
E, da vam se pohvalim ;)

Bio ja danas da platim net (Sezam Novi Sad), i krenem ja priču, kao evo još sad da uplatim, a dalje ćemo videti i tako....

Tu krenu pitanja - šta nije u redu, šta ne radi, jesi zvao podršku....

Reko ping ne valja, sinoć neki prekid pola sata,....

Kaže meni ljubazna devojka ;) kao nemaju sad rutera, pa kad dođu da me zove da probam drugi, da probam drugi spliter, onda nastavi, kaže eto, ti conexanti treba da im stignu... Reko isti ti conexanti, kaže ona isti, i nastavi kaže, evo sad imam samo taj tp link, ali eto taj je nikakav, i tako. I, pade njoj na pamet, da mi da taj tp link ;)

I tako ja stigo kući sa tp linkom 8840 ;)

Eto tako, koga interesuje, nek pohita u sezam da pokupi tp link.

btw ping sa oko 73 pao na oko 63
 
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