[GTER] RES: RES: PTT-SP - Participantes prendendo rotas recebidas no ATM?
Rodrigo Augusto
rodrigo at 1telecom.com.br
Fri Aug 31 12:21:34 -03 2012
Esse bug ja faz tempo que existe... Entra versao nova e continua... Seria bom alguem com certificao trainee para mtcine para entrar em contato. E um sistema que tem um custoxbeneficio muito bom ate um determinado patamar de rede.
Voces notam isso com qualquer fluxo de rede ou apenas quando passa de 150mb? Estava querendo ver se tinha alguma co-relação com bandas mais altas
Enviado via iPhone
Grupo Connectoway
Em 31/08/2012, às 12:08, Rubens Kuhl <rubensk at gmail.com> escreveu:
> Houve alguma versão em que você tenha notado melhora desse comportamento ?
>
>
> Rubens
>
>
> 2012/8/31 Gustavo Santos <gustkiller at gmail.com>:
>> Esta com cara do velho BUG do Mikrotik de stuck routes.. Não adianta dar
>> refresh em tabela... Só resolve dando boot ou quando se tem sorte,
>> desativando e reativando a interface que está o destino da rota presa..
>>
>> Gustavo Santos
>> Analista de Redes
>> CCNA , MTCNA , MTCRE, MTCINE, JUNCIA-ER
>>
>>
>>
>> Em 30 de agosto de 2012 18:14, Rinaldo Vaz <rinaldo at anid.com.br> escreveu:
>>
>>> Provavelmente sim, pelo comportamento que ele citou dos "route-refreshs"
>>> não funcionarem.(só com o reboot)
>>>
>>> Em 30 de agosto de 2012 18:00, Lucas Willian Bocchi
>>> <lucas.bocchi at gmail.com>escreveu:
>>>
>>>> Será que pode ter algo a ver com esse relato?
>>>>
>>>> http://forum.mikrotik.com/viewtopic.php?f=2&t=57690
>>>>
>>>> Em 30 de agosto de 2012 16:47, Rinaldo Vaz <rinaldo at anid.com.br>
>>> escreveu:
>>>>> Rinaldo, segue!
>>>>>
>>>>> [xxxxxxxxx at Router Borda] > /ip route print detail where
>>>>> dst-addres=177.46.1.0/24
>>>>> Flags: X - disabled, A - active, D - dynamic, C - connect, S - static,
>>> r
>>>> -
>>>>> rip, b - bgp, o - ospf, m - mme, B - blackhole, U - unreachable, P -
>>>>> prohibit
>>>>> [xxxxxxxxxxxx at Router Borda] >
>>>>>
>>>>> Raul,
>>>>> Obrigado pela informação. Já que essa rota não está mais disponível em
>>>> sua
>>>>> FIB, o seu Mikrotik deveria informar para todos os seus BGPs (internos
>>> e
>>>>> externos) que essa rota deve ser removida. Mas não é o que está
>>>> acontecendo
>>>>> já que o Looking Glass continua recebendo de você...
>>>>>
>>>>> *lg.sp.ptt.br$ sh ip bgp 177.46.1.0/24*
>>>>> BGP routing table entry for 177.46.1.0/24
>>>>> Paths: (11 available, best #11, table Default-IP-Routing-Table)
>>>>> Not advertised to any peer
>>>>> * 262828 28135*
>>>>> 187.16.216.108 from 187.16.217.93 (192.168.60.129)
>>>>> Origin IGP, localpref 100, valid, external
>>>>> Last update: Thu Aug 30 16:22:13 2012
>>>>>
>>>>> Se você tiver outras sessões BGP além do LG, provavelmente esses caras
>>>>> continuam recebendo a rota para 177.46.1.0/24
>>>>>
>>>>> ######################
>>>>>
>>>>> Há muito tempo que notamos o referido problema ocorrendo em nosso iBGP
>>>>> e temos trabalhado para resolver o caso.
>>>>>
>>>>> Naturalmente leva tempo substituir os roteadores envolvidos por
>>>>> produtos mais competentes, mas no momento creio que um refresh
>>>>> periódico das sessões de BGP é a uma solução paleativa necessária.
>>>>>
>>>>> A propósito, o prefixo em questão não foi encontrado através do
>>>>> mencionado comando do RouterOS. Mesmo assim, periodicamente refazemos
>>>>> nossas sessões de iBGP para dar conta de reclamações internas do AS.
>>>>> Agora receio que mesmo as sessões externas precisam ser refeitas
>>>>> periodicamente.
>>>>>
>>>>> Ricardo,
>>>>>
>>>>> Tive problemas relativamente sério quando ainda estava usando mikrotik.
>>>> Meu
>>>>> transporte até Campina Grande caiu juntamente com a sessão IBGP. O site
>>>> da
>>>>> ANID fica hospedado no meu POP de Campina Grande. Após a queda do
>>> link, o
>>>>> meu roteador Mikrotik de borda com PTT-SP teve essa rota removida de
>>> sua
>>>>> FIB, porém, "esqueceu" de informar aos route-servers que essa rota não
>>>>> estava mais acessíveis.
>>>>>
>>>>> A consequência dessa falha foi que todos os participantes do ATM
>>>>> simplesmente não conseguiam mais abrir o site da ANID. E o pior de tudo
>>>> foi
>>>>> que depois de muitas horas só fiquei sabendo quando o Rodrigo da
>>> 1telecom
>>>>> me ligou avisando.
>>>>>
>>>>> Depois disso decidi que era hora de deixar o Mikrotik apenas como
>>> backup
>>>> no
>>>>> ATM já que participo em 2 PIXes. (alog e tivit)
>>>>>
>>>>> abs
>>>>>
>>>>>
>>>>> Em 30 de agosto de 2012 16:10, Raul Olive <raul at novonet.com.br>
>>>> escreveu:
>>>>>
>>>>>> Rinaldo, segue!
>>>>>>
>>>>>> [xxxxxxxxx at Router Borda] > /ip route print detail where
>>>>>> dst-addres=177.46.1.0/24
>>>>>> Flags: X - disabled, A - active, D - dynamic, C - connect, S - static,
>>>> r -
>>>>>> rip, b - bgp, o - ospf, m - mme, B - blackhole, U - unreachable, P -
>>>>>> prohibit
>>>>>> [xxxxxxxxxxxx at Router Borda] >
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Atenciosamente,
>>>>>> Raul Olive Eler
>>>>>> raul at novonet.com.br
>>>>>> Gerente de Tecnologia e Projetos
>>>>>>
>>>>>>
>>>>>>
>>>>>> -----Mensagem original-----
>>>>>> De: gter [mailto:gter-bounces at eng.registro.br] Em nome de Rinaldo Vaz
>>>>>> Enviada em: quinta-feira, 30 de agosto de 2012 15:48
>>>>>> Para: Grupo de Trabalho de Engenharia e Operacao de Redes
>>>>>> Assunto: Re: [GTER] RES: PTT-SP - Participantes prendendo rotas
>>>> recebidas
>>>>>> no
>>>>>> ATM?
>>>>>>
>>>>>> Boa tarde Raul,
>>>>>>
>>>>>> Acredito que essa rota ainda esteja sendo considerada "acessível"
>>> para o
>>>>>> seu
>>>>>> Mikrotik
>>>>>>
>>>>>> Por favor, qual o resultado do comando:
>>>>>>
>>>>>> /ip route print detail where dst-addres=177.46.1.0/24
>>>>>>
>>>>>> ?
>>>>>>
>>>>>> Abs
>>>>>>
>>>>>>
>>>>>>
>>>>>> Em 30 de agosto de 2012 15:38, Raul Olive <raul at novonet.com.br>
>>>> escreveu:
>>>>>>
>>>>>>> Rinaldo, boa tarde.
>>>>>>>
>>>>>>> AS262828 é nosso, usamos sim RB com mikrotik 5.19
>>>>>>>
>>>>>>> --
>>>>>>>
>>>>>>> Atenciosamente,
>>>>>>> Raul Olive Eler
>>>>>>> raul at novonet.com.br
>>>>>>> Gerente de Tecnologia e Projetos
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> -----Mensagem original-----
>>>>>>> De: gter [mailto:gter-bounces at eng.registro.br] Em nome de Rinaldo
>>> Vaz
>>>>>>> Enviada em: quinta-feira, 30 de agosto de 2012 15:11
>>>>>>> Para: Grupo de Trabalho de Engenharia e Operacao de Redes; Percival
>>>>>>> ANID
>>>>>>> Assunto: [GTER] PTT-SP - Participantes prendendo rotas recebidas no
>>>> ATM?
>>>>>>>
>>>>>>> Boa tarde à todos,
>>>>>>>
>>>>>>> Tenho percebido nos últimos meses comportamentos muito estranhos,
>>> onde
>>>>>>> algumas redes simplesmente param de funcionar via PTT-SP, e tenho
>>>>>>> motivos para acreditar que comportamentos anormais de alguns
>>> Mikrotiks
>>>>>>> estão sendo a causa de alguns desses problemas onde redes param de
>>>>>>> funcionar via ATM do PTT-SP
>>>>>>>
>>>>>>> Fiz hoje uma experiência anunciando para o ATM o prefixo
>>>>>>> *177.46.1.0/24*
>>>>>>>
>>>>>>> Primeiro chequei no LOOKING GLASS do PTT-SP que o prefixo
>>>>>>> 177.46.1.0/24não <http://177.46.1.0/24n%C3%A3o> <
>>> http://177.46.1.0/24n%C3%A3o> <
>>>> http://177.46.1.0/24n%C3%A3o> existia na FIB de
>>>>>> nenhum participante:
>>>>>>>
>>>>>>> lg.sp.ptt.br$ sh ip bgp 177.46.1.0/24
>>>>>>> *% Network not in table*
>>>>>>> lg.sp.ptt.br$
>>>>>>>
>>>>>>> Após liberar o novo prefixo nos meus filtros passamos a anuncia-lo
>>> no
>>>>>> ATM:
>>>>>>>
>>>>>>> BGP routing table entry for *177.46.1.0/24*
>>>>>>> Paths: (1 available, best #1, table Default-IP-Routing-Table)
>>>>>>> Advertised to non peer-group peers:
>>>>>>> 187.16.216.252 *187.16.216.253 187.16.216.254*
>>>>>>> Local
>>>>>>> 0.0.0.0 from 0.0.0.0 (201.20.36.146)
>>>>>>> Origin IGP, metric 0, localpref 100, weight 32768, valid,
>>>>>>> sourced, local, best
>>>>>>> Last update: Thu Aug 30 14:10:19 2012
>>>>>>>
>>>>>>> Notem nos campos em negrito que estou anunciando 177.46.1.0/24 para
>>>> LG
>>>>>>> e os dois route-servers e consequentemente, todos os participantes
>>> que
>>>>>>> estabelecem BGP com o LG passaram a informar conforme print abaixo:
>>>>>>>
>>>>>>> Consequentemente, esse é a visão do Looking Glass:
>>>>>>> *
>>>>>>> lg.sp.ptt.br$ sh ip bgp 177.46.1.0/24* BGP routing table entry for
>>>>>>> 177.46.1.0/24
>>>>>>> Paths: (83 available, best #83, table Default-IP-Routing-Table)
>>>>>>> Not advertised to any peer
>>>>>>> 10954 28135
>>>>>>> 187.16.216.108 from 187.16.216.28 (189.9.64.127)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:10 2012
>>>>>>>
>>>>>>> 53070 28135
>>>>>>> 187.16.216.108 from 187.16.216.102 (187.86.223.254)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Community: 53070:4000
>>>>>>> Last update: Thu Aug 30 13:17:10 2012
>>>>>>>
>>>>>>> 28288 28135
>>>>>>> 187.16.216.108 from 187.16.216.124 (189.28.192.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:08 2012
>>>>>>>
>>>>>>> 10954 28135
>>>>>>> 187.16.216.108 from 187.16.216.33 (192.168.10.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:08 2012
>>>>>>>
>>>>>>> 28140 28135
>>>>>>> 187.16.216.108 from 187.16.216.193 (187.49.32.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:08 2012
>>>>>>>
>>>>>>> 262518 28135
>>>>>>> 187.16.216.108 from 187.16.217.65 (177.67.116.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:07 2012
>>>>>>>
>>>>>>> 7048 28135
>>>>>>> 187.16.216.108 from 187.16.217.37 (192.168.0.254)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:07 2012
>>>>>>>
>>>>>>> 28620 28135
>>>>>>> 187.16.216.108 from 187.16.217.175 (201.55.136.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:06 2012
>>>>>>>
>>>>>>> 28272 28135
>>>>>>> 187.16.216.108 from 187.16.217.58 (200.219.202.220)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:05 2012
>>>>>>>
>>>>>>> 10362 28135
>>>>>>> 187.16.216.108 from 187.16.216.84 (200.218.20.193)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:05 2012
>>>>>>>
>>>>>>> 28280 28135
>>>>>>> 187.16.216.108 from 187.16.216.148 (201.33.240.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Community: 28280:300
>>>>>>> Last update: Thu Aug 30 13:17:02 2012
>>>>>>>
>>>>>>> 28262 28135
>>>>>>> 187.16.216.212 from 187.16.216.212 (187.17.32.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:02 2012
>>>>>>>
>>>>>>> 27693 28135
>>>>>>> 187.16.216.108 from 187.16.217.86 (189.127.15.254)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:17:00 2012
>>>>>>>
>>>>>>> 53069 28135
>>>>>>> 187.16.216.108 from 187.16.216.238 (187.86.192.5)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:59 2012
>>>>>>>
>>>>>>> 28208 28135
>>>>>>> 187.16.216.108 from 187.16.217.34 (186.226.45.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Community: 28208:101
>>>>>>> Last update: Thu Aug 30 13:16:59 2012
>>>>>>>
>>>>>>> 53116 28135
>>>>>>> 187.16.216.108 from 187.16.217.128 (187.110.1.18)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:58 2012
>>>>>>>
>>>>>>> 53116 28135
>>>>>>> 187.16.216.108 from 187.16.217.127 (187.110.1.17)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:58 2012
>>>>>>>
>>>>>>> 27715 28135
>>>>>>> 187.16.216.108 from 187.16.217.164 (186.202.44.2)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:56 2012
>>>>>>>
>>>>>>> 28275 28135
>>>>>>> 187.16.216.108 from 187.16.216.27 (172.28.7.179)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:55 2012
>>>>>>>
>>>>>>> 262518 28135
>>>>>>> 187.16.216.108 from 187.16.217.66 (177.67.112.253)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:55 2012
>>>>>>>
>>>>>>> 28287 28135
>>>>>>> 187.16.216.108 from 187.16.216.169 (201.49.207.254)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Community: 28287:9055
>>>>>>> Last update: Thu Aug 30 13:16:54 2012
>>>>>>>
>>>>>>> 16736 28135
>>>>>>> 187.16.216.108 from 187.16.216.130 (200.229.24.2)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:53 2012
>>>>>>>
>>>>>>> 28218 28135
>>>>>>> 187.16.216.108 from 187.16.216.172 (189.124.0.32)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:52 2012
>>>>>>>
>>>>>>> 28143 28135
>>>>>>> 187.16.217.19 from 187.16.217.19 (187.49.97.2)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:51 2012
>>>>>>>
>>>>>>> 28634 28135
>>>>>>> 187.16.216.108 from 187.16.216.209 (201.62.64.252)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:51 2012
>>>>>>>
>>>>>>> 28173 28135
>>>>>>> 187.16.216.108 from 187.16.217.4 (187.16.217.4)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:49 2012
>>>>>>>
>>>>>>> 28634 28135
>>>>>>> 187.16.216.108 from 187.16.216.131 (201.62.64.254)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:45 2012
>>>>>>>
>>>>>>> 53144 28135
>>>>>>> 187.16.216.133 from 187.16.216.133 (187.103.64.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:43 2012
>>>>>>>
>>>>>>> 53075 28135
>>>>>>> 187.16.216.108 from 187.16.216.188 (187.94.16.255)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:43 2012
>>>>>>>
>>>>>>> 14840 28135
>>>>>>> 187.16.216.108 from 187.16.216.219 (186.211.128.32)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Community: 14840:10 14840:40 14840:7110
>>>>>>> Last update: Thu Aug 30 13:16:42 2012
>>>>>>>
>>>>>>> 53080 28135
>>>>>>> 187.16.216.108 from 187.16.216.215 (187.95.0.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:41 2012
>>>>>>>
>>>>>>> 262757 28135
>>>>>>> 187.16.216.108 from 187.16.217.104 (186.224.111.254)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:49 2012
>>>>>>>
>>>>>>> 28135
>>>>>>> 187.16.216.108 from 187.16.216.253 (187.16.216.253)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:41 2012
>>>>>>>
>>>>>>> 53242 28135
>>>>>>> 187.16.217.112 from 187.16.217.112 (177.21.0.1)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:57 2012
>>>>>>>
>>>>>>> 262828 28135
>>>>>>> 187.16.216.108 from 187.16.217.93 (192.168.60.129)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:53 2012
>>>>>>>
>>>>>>> 262476 28135
>>>>>>> 187.16.216.108 from 187.16.217.207 (187.16.217.207)
>>>>>>> Origin IGP, localpref 100, valid, external
>>>>>>> Last update: Thu Aug 30 13:16:58 2012
>>>>>>>
>>>>>>> 22548 28135
>>>>>>> 187.16.217.17 from 187.16.217.17 (200.160.0.133)
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