Marcelo Sincic

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Problemas em rede com o Windows 2003 R2

Eu tive diversos problemas em rede com o Windows 2003 R2 ao tentar copiar grandes arquivos para outras maquinas.
Para resolver o problema foi necessário fazer 2 passos, que devem ser feitos e testados individualmente, pois em 4 casos funcionou mas tive um servidor específico que não deu certo e era a placa de rede com defeito.
Muitas vezes apenas desabilitando o CHIMNEY já resolve o problema.

1) Deslique o recurso CHIMNEY do windows:
Netsh int ip set chimney DISABLED

Este recurso faz o pacote de rede ser escalável, ou seja, o Windows dinamicamente muda o tamanho do pacote conforme o tipo e a constancia do tráfego. Parece muito bom, porem nem todos os SOs tem este recurso, o que causa o problema da queda de conexão.
(Fonte: http://support.microsoft.com/kb/912222/pt-br)

2) Desligue o recurso "Offload TCP_LargeSend" e o "Offload Checksum" na placa de rede.

Estes recursos deveriam manter o tamanho do pacote e manter a conexão mesmo quando ocorre um problema, porem as vezes aparecem aquele "balãozinho" do windows avisando problemas na gravação de dados em rede.

Posted: Apr 25 2008, 14:43 by msincic | Comments (10) RSS comment feed |
Filed under: Windows

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