[GTER] problemas com BGP

Mon Jul 7 11:16:14 -03 2008

Alexandre,

Executei alguns testes da minha rede e obtive resultados semelhantes
para os dois IPs:

--- 189.84.0.4 ping statistics ---
100 packets transmitted, 96 received, 4% packet loss, time 7330ms
rtt min/avg/max/mdev = 65.342/72.499/93.633/4.191 ms, pipe 2, ipg/ewma
74.046/73.263 ms

--- 200.243.251.133 ping statistics ---
100 packets transmitted, 90 received, 10% packet loss, time 5946ms
rtt min/avg/max/mdev = 51.368/58.447/82.398/5.105 ms, pipe 2, ipg/ewma
60.067/58.083 ms

Está com uma perda relativamente alta de pacotes.
Imagino que o consumo de banda não esteja no limite, então o ideal
seria entrar em contato com a Embratel e pedir uma avaliação do link.

Att,

2008/7/3 Alexandre J. Correa - Onda Internet <alexandre at onda.psi.br>:
> Caros, bom dia !
>
> Notei que os acessos a determinados lugares esta bastante estranho, predendo
> pacotes, as vezes 100%, saindo com meu cidr perdia, mas saindo com cidr da
> operadora nao perdia.
>
> utilizando meu cidr:
>
> maresia# ping -S 189.84.0.4 www.uol.com.br
> PING www.uol.com.br (200.98.249.120): 56 data bytes
> 64 bytes from 200.98.249.120: icmp_seq=8 ttl=53 time=30.986 ms
> 64 bytes from 200.98.249.120: icmp_seq=9 ttl=53 time=30.986 ms
> 64 bytes from 200.98.249.120: icmp_seq=10 ttl=53 time=30.986 ms
> 64 bytes from 200.98.249.120: icmp_seq=17 ttl=53 time=30.986 ms
> 64 bytes from 200.98.249.120: icmp_seq=38 ttl=50 time=26.987 ms
> ^C
> --- www.uol.com.br ping statistics ---
> 61 packets transmitted, 5 packets received, 91% packet loss
> round-trip min/avg/max/stddev = 26.987/30.186/30.986/1.600 ms
>
> utilizando o cidr da operadora:
>
> maresia# ping -S 200.243.251.133 www.uol.com.br
> PING www.uol.com.br (200.98.249.120) from 200.243.251.133: 56 data bytes
> 64 bytes from 200.98.249.120: icmp_seq=0 ttl=53 time=31.572 ms
> 64 bytes from 200.98.249.120: icmp_seq=1 ttl=53 time=30.985 ms
> 64 bytes from 200.98.249.120: icmp_seq=2 ttl=53 time=30.986 ms
> 64 bytes from 200.98.249.120: icmp_seq=3 ttl=53 time=29.983 ms
> 64 bytes from 200.98.249.120: icmp_seq=4 ttl=53 time=30.986 ms
> 64 bytes from 200.98.249.120: icmp_seq=5 ttl=53 time=29.985 ms
> 64 bytes from 200.98.249.120: icmp_seq=6 ttl=53 time=29.984 ms
> 64 bytes from 200.98.249.120: icmp_seq=7 ttl=53 time=29.988 ms
> ^C
> --- www.uol.com.br ping statistics ---
> 8 packets transmitted, 8 packets received, 0% packet loss
> round-trip min/avg/max/stddev = 29.983/30.559/31.572/0.601 ms
>
>
>
> maresia# ping -S 189.84.0.4 www.terra.com.br
> PING www.terra.com.br (200.176.3.142): 56 data bytes
> ^C
> --- www.terra.com.br ping statistics ---
> 21 packets transmitted, 0 packets received, 100% packet loss
>
> maresia# ping -S 200.243.251.133 www.terra.com.br
> PING www.terra.com.br (200.176.3.142) from 200.243.251.133: 56 data bytes
> 64 bytes from 200.176.3.142: icmp_seq=1 ttl=244 time=57.983 ms
> 64 bytes from 200.176.3.142: icmp_seq=2 ttl=244 time=57.985 ms
> 64 bytes from 200.176.3.142: icmp_seq=3 ttl=244 time=57.987 ms
> 64 bytes from 200.176.3.142: icmp_seq=4 ttl=244 time=57.987 ms
> 64 bytes from 200.176.3.142: icmp_seq=5 ttl=244 time=57.986 ms
> 64 bytes from 200.176.3.142: icmp_seq=6 ttl=244 time=57.988 ms
> 64 bytes from 200.176.3.142: icmp_seq=7 ttl=244 time=57.979 ms
> 64 bytes from 200.176.3.142: icmp_seq=8 ttl=244 time=57.986 ms
> 64 bytes from 200.176.3.142: icmp_seq=9 ttl=244 time=58.986 ms
> ^C
> --- www.terra.com.br ping statistics ---
> 10 packets transmitted, 9 packets received, 10% packet loss
> round-trip min/avg/max/stddev = 57.979/58.096/58.986/0.315 ms
> maresia#
>
>
>
> Onda-CRT-04#sh ip bgp neighbors 200.251.xx.xx advertised-routes
> BGP table version is 106143, local router ID is 189.84.SS.SS
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
>  Network          Next Hop            Metric LocPrf Weight Path
> *> 189.84.0.0/20    0.0.0.0                  0         32768 i
>
>
> ha algum outro teste que possa ser feito para tentar achar o que esta
> acontecendo ?
>
>
> Obrigado !!
>
> --
> Sds.
>
> Alexandre Jeronimo Correa
>
> Onda Internet - http://www.ondainternet.com.br
> OPinguim Hosting - http://www.opinguim.net
>
> Linux User ID #142329
>
> UNOTEL S/A - http://www.unotel.com.br
>
>
>
>
> --
> gter list    https://eng.registro.br/mailman/listinfo/gter
>

-- 
André Sencioles Vitorio Oliveira
asenci at gmail.com