booting rtems over the network?

Chris Johns cjohns at
Fri Jun 14 00:22:16 UTC 2002

Jack Cawkwell wrote:
> Thanks for that Ian, ifconfig tells me that the MTU is 1500.
> so I guess that is not the problem?
> >>
> >>Searching for server (DHCP)...
> >>ALERT: got a fragmented packet reconfigure your server
> >>
> >>at the server:
> >>
> >>bootpd[30134]: bootptab mtime: Sun Jun  9 11:56:48 2002
> >>bootpd[30134]: request from Ethernet address 00:D0:09:F1:E3:C1
> >>bootpd[30134]: found (pablo)
> >>bootpd[30134]: bootfile="/tftpboot/picodemo8.nbi"
> >>bootpd[30134]: vendor magic field is
> >>bootpd[30134]: request message length=548
> >>bootpd[30134]: request has DHCP msglen=1500
> >>bootpd[30134]: extended reply, length=1500, options=1264

This seems rather large for DHCP. I suggest you check your DHCP
configuration file and see if you can make the message smaller.

> >>
> >>ALERT: got a fragmented packet reconfigure your server
> >>

A 1500 byte message will be fragmented as the MAC and networking layers
take some of the MTU space.

 Chris Johns, cjohns at

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