RE: RCM4300 MTU Stuck at 16

Hi Steve,


Thanks for the reply.


I only set the MTU once right in beginning of my code.


 


I did as you suggested and added;


 


“printf("MTU:%d\r\n",ETH_MTU);”


 


I chose a value of 1400, and when I run it this I get:


“MTU:1400  “.


 


But if I also add “ip_print_ifs();” then I get this;


“Interface table:                                                                


                                                                                


#  IP addr.        Mask            Up  Lnk Type MTU  Flags  Peer/router         


-- --------------- --------------- --- --- ---- ---- ------ ---------------     


 0 192.168.1.10    255.255.255.0   yes yes eth    16 *      192.168.1.254    “


 


I run this in a loop to see if anything is changing and it provides the same output messages.


 


To me it appears if the macro value is being set correctly but not being implemented?


 


Below are the only macros that I set;


//-----------------------------------


#define  HTTP_MAXSERVERS     4


#class auto


#define RWEB_ZHTML_MAXVARLEN                     1024


#define HTTP_MAXBUFFER                                        1024


#define USE_RABBITWEB 1


//------------------------------------


 


 


The complete system works  fine but I must know if the MTU is set to 1500 or some higher value than 16.


 


Regards,


Mike


 


From: [email protected] [mailto:[email protected]] 
Sent: Thursday, January 28, 2016 5:01 PM
To: [email protected]
Subject: Re: [rabbit-semi] RCM4300 MTU Stuck at 16


 


  


If ETH_MTU is not defined in your code, the value is defined in net.lib and is either 


1500 or 1489, depending on whether WIFI is used and if the board is a R5000 series. 
 


Are you sure you haven't defined it somewhere? I suggest using a printf() statement


to send the value to the output window of the debugger and verify the value set.


 


printf("MTU: %d\r\n", ETH_MTU);


 


Steve


 




  _____  




From: "Femto Com mike-g5W9c/[email protected] [rabbit-semi]" <[email protected]>
To: [email protected] 
Sent: Thursday, January 28, 2016 4:02 AM
Subject: [rabbit-semi] RCM4300 MTU Stuck at 16


 


  


Good day,
I'm hoping that someone could assist me with setting the MTU value for the RCM4300. 
On boot-up the interface table reports that "eth MTU 16". 




Using the ETH_MTU macro has no effect, no matter which value I chose it remains at 16. 








I can change the MTU of my RCM4010 to a value of my choice using the ETH_MTU macro. 










Both modules are loaded with the same code. 
I'm using DC 10.7. 
Any idea where I can go and look?


Regards
Mike