Problem s dorucovanim posty II

Pondělí Únor 4 07:51:35 CET 2002

Dobre rano,

> > g0VCQEe24891: collect: premature EOM: Error 0
> > g0VCQEe24891: collect: unexpected close on connection from
> [195.28.85.118], sender=<xxx na intrel.sk>: Error 0
> > g0VCsPe24970: collect: premature EOM: Error 0
> > g122fee29930: collect: unexpected close on connection from
> bystrica.pvt.sk, sender=<xx na snowboard-school.sk>: Error 0
> > *********
> > no a vzdialeny server sa sprava asi tak, ze zacne mail odosielat, ale
> proces sa nachadza v stave "wait". No a po case
> > sa spojenie zrusi a skusa to znova. A na X-ty pokus sa mu to dorucit
> podari.
> 
> myslim, ze jde o projev problemoveho spojeni k Internetu. Klient je
> naprilad pripojen ne prilis kvalitnim bezdratovym spojem (proverit
> linku pingem s delsim packetem - > 1kB).

No..... Kedze MTU je tam 1500 a pakety do tejto velkosti idu abslutne bez problemov
vyskusal som aj 2k ktore idu tiez bez problemov. 4k maju znacne vypadky,
ale tak velky paket by sa tam nemal ani dostat, nie?

*********************************
ping -s 2048 bystrica.pvt.sk
PING bystrica.pvt.sk (195.28.64.137) from 213.215.80.33 : 2048(2076) bytes of data.
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=0 ttl=248 time=136.468 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=1 ttl=248 time=149.796 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=2 ttl=248 time=129.783 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=3 ttl=248 time=129.775 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=4 ttl=248 time=129.732 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=5 ttl=248 time=129.675 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=6 ttl=248 time=129.791 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=7 ttl=248 time=129.774 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=8 ttl=248 time=129.738 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=9 ttl=248 time=129.808 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=10 ttl=248 time=138.706 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=11 ttl=248 time=129.763 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=12 ttl=248 time=129.789 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=13 ttl=248 time=129.794 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=14 ttl=248 time=129.726 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=15 ttl=248 time=139.775 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=16 ttl=248 time=129.767 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=17 ttl=248 time=128.479 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=18 ttl=248 time=159.771 msec
2056 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=19 ttl=248 time=129.536 msec

--- bystrica.pvt.sk ping statistics ---
20 packets transmitted, 20 packets received, 0% packet loss
round-trip min/avg/max/mdev = 128.479/133.472/159.771/7.921 ms

[root na ns root]# ping -s 4096 bystrica.pvt.sk
PING bystrica.pvt.sk (195.28.64.137) from 213.215.80.33 : 4096(4124) bytes of data.
4104 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=1 ttl=248 time=159.324 msec
4104 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=2 ttl=248 time=159.545 msec
4104 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=16 ttl=248 time=199.526 msec
4104 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=30 ttl=248 time=169.761 msec
4104 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=31 ttl=248 time=169.732 msec
4104 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=45 ttl=248 time=159.568 msec
4104 bytes from bystrica.pvt.sk (195.28.64.137): icmp_seq=46 ttl=248 time=189.544 msec

--- bystrica.pvt.sk ping statistics ---
56 packets transmitted, 7 packets received, 87% packet loss
round-trip min/avg/max/mdev = 159.324/172.428/199.526/14.861 ms
****************************************

No a ako tak pozeram je to problem radia (ping na router):
****************************************
[root na ns rc.d]# ping -s 4096 213.215.80.1
PING 213.215.80.1 (213.215.80.1) from 213.215.80.33 : 4096(4124) bytes of data.
4104 bytes from 213.215.80.1: icmp_seq=0 ttl=255 time=76.491 msec
4104 bytes from 213.215.80.1: icmp_seq=1 ttl=255 time=69.659 msec
4104 bytes from 213.215.80.1: icmp_seq=4 ttl=255 time=79.671 msec
4104 bytes from 213.215.80.1: icmp_seq=5 ttl=255 time=89.655 msec
4104 bytes from 213.215.80.1: icmp_seq=10 ttl=255 time=69.748 msec
4104 bytes from 213.215.80.1: icmp_seq=11 ttl=255 time=79.735 msec
4104 bytes from 213.215.80.1: icmp_seq=16 ttl=255 time=79.751 msec
4104 bytes from 213.215.80.1: icmp_seq=21 ttl=255 time=79.752 msec
4104 bytes from 213.215.80.1: icmp_seq=22 ttl=255 time=119.735 msec
4104 bytes from 213.215.80.1: icmp_seq=27 ttl=255 time=69.658 msec

--- 213.215.80.1 ping statistics ---
30 packets transmitted, 10 packets received, 66% packet loss
round-trip min/avg/max/mdev = 69.658/81.385/119.735/14.090 ms
****************************************

> > Do sveta som pripojeny mikrovlnkou
> vida - trefa
;o)
> 
> >s rychlostou ku mne obmedzenou na 24kbit.
> 
> pokud je ta linka pretizena tak shaper packety zahazuje urcite.
No linka asi pretazena nebude. Mne sa to tu takto sprava aj v noci
ked tu neni ani noha... A linka od radia von bola nedavno povysena
zo 640k na 1Mbit, tekze tam asi tiez problem nebude...

> 
> >Dalej je uz optika.
> > Linka vypadky nema (teda na ziadne zatial neprichadzam), napr. FTP bezi
> bez problemov.
> 
> jestli to nebude tim, ze FTPckem downloadujes k sobe, kdezto maily odesilas
> pryc. Dost casto
Prave ze nie ;o) Problem je s mailami smerom ku mne...

> byvaji bezdratove spoje co se tyce kvality nesymetricke. Ze zkusenosti muzu
> potvrdit, ze pokud
> se vyskytnou problemy (pretizeny accesspoint) pak slabsim (signalem)
> klientum odejde upload
> jako prvni. I kdyz tech 24kbps je tak nicotna rychlost, ze byc ta linka
> musela byt opravdu
> strasne slaba.
> Jakou jsi pripojen technologii (Lucent WaveLan AP to neni)? Jakou ma silu
> signal?
Signal ma cez 65%, je to z-com, rychlost smerom ku mne obmedzena na 24k,
smer von (vraj) neobmedzeny (asi obmedzeny na 256k). Radio
by malo bezat na 2Mbit. No a tie maily smeruju ku mne! Odo mna chodi
von vsetko bez problemov...
A bol tu aj dotaz na korektnost DNS - malo by to byt korektne,
primar mam ja tu, sekundar je u provaidera....

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