Após verificar e reverificar as configurações, reiniciei o servidor do SAGE e a comunicação estabeleceu, rodando a aplicação Mestre 104 em um notebook conectado diretamente a porta Ethernet designada para a distribuição.
Pois bem, trouxe a aplicação para o Centro de Operações, ao tentar conectar o erro retornado é outro. Quando inicia a comunicação, o Mestre conecta-se ao Escravo, porém logo retorna o erro WSAECONNABORTED.
Pesquisando sobre na internet é um erro muito genérico, mas vi algo sobre timeout e coisas do tipo.
Segue abaixo trecho do log da aplicação Mestre.
11/09/2020 07:55:56.186 (0B9C) IOKIT CONNECTING...
11/09/2020 07:55:56.186 (0B9C) SOCKET connecting socket to '172.16.0.41' on port 2404...
11/09/2020 07:55:56.202 (0B9C) SOCKET socket connected to '172.16.0.41' on port 2404 (local port 49270)!
11/09/2020 07:55:56.202 (0B9C) IOKIT CONNECTED!
11/09/2020 07:55:56.202 (0DEC) DRIVER RUNTHREAD: Connected
11/09/2020 07:55:56.202 (0DEC) DRIVER Station 1.101: [alwaysactive,active,linkActive,*ACTIVATENOW]
11/09/2020 07:55:56.202 (0DEC) DRIVER LinkLayer104: interface connected, counters reset
11/09/2020 07:55:56.202 (0DEC) DRIVER Station 1.101: [alwaysactive,active,linkActive,*activateNow]
11/09/2020 07:55:56.202 (0DEC) DRIVER Station 1.101: [alwaysactive,active,*LINKACTIVE,activateNow]
11/09/2020 07:55:56.202 (0DEC) DRIVER Station 1.101: [alwaysactive,*ACTIVE,LINKACTIVE,activateNow]
11/09/2020 07:55:56.202 (0B9C) IO TX: 68 04 07 00 00 00
11/09/2020 07:55:56.202 (0B9C) FRAMES >> STARTDT ACT
11/09/2020 07:55:56.202 (0B9C) IO TX: 68 0E 00 00 00 00 64 01 06 00 65 00 00 00 00 14
11/09/2020 07:55:56.202 (0B9C) FRAMES >> IFRAME[14] (SSeq=0,RSeq=0) [C_IC_NA_1=100,cnt=1,cot=6(act),addr=101,orig=0] ADDR=0 QOI(20)
11/09/2020 07:55:56.233 (0DB8) TAG <== (0.000) Tag(0.992.0.0).ReadValue = (07:55:56.233) 1
11/09/2020 07:55:56.233 (0DB8) TAG <== (0.000) Tag(0.998.0.1).ReadValue = (07:55:56.233) 2
11/09/2020 07:55:56.248 (0B9C) SOCKET recv() returned error WSAECONNABORTED (10053)
11/09/2020 07:55:56.248 (0B9C) SOCKET socket closed
11/09/2020 07:55:56.311 (0B9C) IO RX: TIMEOUT
11/09/2020 07:55:56.311 (0B9C) IOKIT CONNECTION LOST!
11/09/2020 07:55:56.311 (0B9C) IOKIT Request handler disabled
11/09/2020 07:55:56.311 (0DEC) DRIVER RUNTHREAD: Disconnected
11/09/2020 07:55:56.311 (0DEC) DRIVER LinkLayer104: interface disconnected, counters reset
11/09/2020 07:55:56.311 (0DEC) DRIVER Disconnecting slave station...
11/09/2020 07:55:56.311 (0DEC) DRIVER Station 1.101: [alwaysactive,ACTIVE,*linkActive,activateNow]
11/09/2020 07:55:56.311 (0DEC) DRIVER Station 1.101: [alwaysactive,*active,linkActive,activateNow]
11/09/2020 07:55:56.311 (077C) DRIVER *** Error: Application command 'GeneralInterrogation' cancelled
11/09/2020 07:55:56.311 (077C) DRIVER GeneralInterrogation: failed to send/receive activation command (forcing disconnection)
11/09/2020 07:55:56.311 (077C) DRIVER Disconnecting slave station...