Since there is a project to deploy a x86 VyOS as the router, After I install the system and I find out that I can use the console to connect to the system jusk like other Cisco(H3C) routers rather than using the screen.
However, The Cisco router are using RS232-RJ45 port, and I just spot that the H61 MotherBoard are using jcom jumper to the DB9 male port. And my USB-RS232 converter is also with the DB9 male port, so I'd like to make a jcom to DB9 female
plan.
I just find out some jcom and DB9 information here,
JCOM jumper on the motherboard
② RXD | ④ DTR | ⑥ DSR | ⑧ CTS | EMPTY |
---|---|---|---|---|
① DCD | ③ TXD | ⑤ GND | ⑦ RTS | ⑨ RI |
JCOM line
First is red -> -> ->
①DCD ②RXD ③TXD ④DTR ⑤GND ⑥DSR ⑦RTS ⑧CTS ⑨RI
As usual, when communicating via the RS232, a PC is as the DTE
, but when I using the PC being the router, it is becoming the DCE
, so it's essential to switch the RXD and TXD.
Front view
Back view
Finally, it works well with the Vyos Serial Console Mode.
VyOS Serial Console GRUB
VyOS Serial Console Systemctl
VyOS Serial Console System
The VyOS Router
Ref:
https://www.ppuu.org/2018/11/jcom-to-db9-female/
https://wiki.vyos.net/wiki/Serial_console
https://help.ubuntu.com/community/SerialConsoleHowto
http://www.frontx.com/pro/cpx102_2.html
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