从Mac系统7到Debian 10的PPP连接

Question

我有一个Mac SE/30，我想通过PPP连接到Debian 10，然后访问互联网--就像拨号一样。

我可以成功地通过空调制解调器链接发送文本，现在我想在同一个链接上建立PPP连接。

SE/30正在运行系统7.5.5，OpenTransport 1.1.2和Config控制面板。

在Debian 10上会发生这样的情况：

mini31 # pppd nodetach debug /dev/ttyUSB0 9600
using channel 10
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
rcvd [LCP ConfReq id=0x42 <magic 0x2a>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
sent [LCP ConfAck id=0x42 <magic 0x2a>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x43 <magic 0x2a>]
sent [LCP ConfAck id=0x43 <magic 0x2a>]
rcvd [LCP ConfReq id=0x44 <magic 0x2a>]
sent [LCP ConfAck id=0x44 <magic 0x2a>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x45 <magic 0x2a>]
sent [LCP ConfAck id=0x45 <magic 0x2a>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x46 <magic 0x2a>]
sent [LCP ConfAck id=0x46 <magic 0x2a>]
rcvd [LCP ConfReq id=0x47 <magic 0x2a>]
sent [LCP ConfAck id=0x47 <magic 0x2a>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x48 <magic 0x2a>]
sent [LCP ConfAck id=0x48 <magic 0x2a>]
rcvd [LCP ConfReq id=0x49 <magic 0x2a>]
sent [LCP ConfAck id=0x49 <magic 0x2a>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x4a <magic 0x2a>]
sent [LCP ConfAck id=0x4a <magic 0x2a>]
rcvd [LCP ConfReq id=0x4b <magic 0x2a>]
sent [LCP ConfAck id=0x4b <magic 0x2a>]
sent [LCP ConfReq id=0x1 <mru 1410> <asyncmap 0x0> <magic 0x55f04cd0> <pcomp> <accomp>]
LCP: timeout sending Config-Requests
Connection terminated.

我的猜测是Debian预期Mac会发送LCP ConfAck，但它没有这么做。然而，我不明白这意味着什么。

有什么办法让它起作用吗？

编辑

Mac似乎在为神奇数字参数发送重复的配置请求，尽管Debian正在为它们发送接受请求。同样，Mac没有响应Debian的配置请求。我想知道Mac是否没有接收数据；是否是Debian和Mac的RS422上的USB之间的物理连接有问题？

Answer 1

需要禁用流控制：

# pppd nodetach debug /dev/ttyUSB0 9600 -crtscts