[syslinux] PXE/TFTP Transfer time out problems

Jason Gerfen jason.gerfen at scl.utah.edu
Thu Sep 8 12:25:04 PDT 2005


I am having a problem while trying to download anything from a recently 
configured tftp boot server.

Here are the configuration for the dhcpd.conf

option domain-name="domain.com";
default-lease-time 900;
max-lease-time 1800;
ddns-update-style none;
authoritative;
allow bootp;
allow booting;

option space PXE;
option PXE.mtftp-ip     code 1 = ip-address;
option PXE.mtftp-cport  code 2 = unsigned integer 16;
option PXE.mtftp-sport  code 3 = unsigned integer 16;
option PXE.mtftp-tmout  code 4 = unsigned integer 8;
option PXE.mtftp-delay  code 5 = unsigned integer 8;

subnet 155.97.17.160
        netmask 255.255.255.224 {
                option domain-name-servers ns.domain.com, ns1.domain.com;
                option routers routerIP;
        }

group {
        next-server tftp_server;
        filename "pxelinux.0";
        host PXE-Client {
                hardware ethernet 00:02:B3:EF:75:39;
                fixed-address 192.168.0.1;
        }
}

Here are is the tcpdump data being recieved when getting a pxelinux.0

13:52:42.837342 IP (tos 0x0, ttl  62, id 0, offset 0, flags [DF], 
length: 50) 192.168.0.2.1027 > tftp.server.com.tftp: [udp sum ok]  22 
RRQ "pxelinux.0" netascii
13:52:47.834011 IP (tos 0x0, ttl  62, id 0, offset 0, flags [DF], 
length: 50) 192.168.02.1027 > tftp.server.com.tftp: [udp sum ok]  22 RRQ 
"pxelinux.0" netascii

And here is the output of a tftp request for the same file

tftp> get pxelinux.0
getting from 155.97.16.163:pxelinux.0 to pxelinux.0 [netascii]
sent RRQ <file=pxelinux.0, mode=netascii>
sent RRQ <file=pxelinux.0, mode=netascii>
sent RRQ <file=pxelinux.0, mode=netascii>
sent RRQ <file=pxelinux.0, mode=netascii>
sent RRQ <file=pxelinux.0, mode=netascii>
Transfer timed out.

The transfer times out and I am left with a file "pxelinux.0" with a 
filesize of 0 bytes.

I am not able to find any information regarding this problem using 
google or searching the syslinux mailing list.  Any help is appreciated.


-- 
Jason Gerfen

"In the absence of justice, what is sovereignty but organized robbery?"
 ~ Saint Augustine




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