Why I can not connect my Ixp425 Router to Openocd

Development Boards MicroMod
1

I have a IXP425 based router , i want to flash redboot as bootloader for it .

I made a wiggler using a 74hc244 and two 2n3904 and some resistors. i connected SRST to LPTs pin 6 and TRST to LPTs pin 2 . It did not work .the logging error is “Failed to receiving data from debug handler after 1000 attempts”.after i read the source code for parport _ parport.c it defines the SRST to pin 2 and TRST to pin 6.

Anybody here can tell me Must I Exchange the two singals to get work ?

Thanks a lot for help !

2

Hi redboot,

please look into the “Open On-Chip Debugger” document from Dominic Rath. There is a Wiggler Schematic where SRST is connected to Pin2 and TRST is connected to Pin6.

But you should be very careful using JTAG on your router!

Especially the IXP network processors are a little bit tricky to handle.

Look here viewtopic.php?t=8925&highlight=

Isn’t there another way to flash your router?

Maybe through Ethernet?