[syslinux] PXE/TFTP Transfer time out problems

[Jason Gerfen]

My apologies here, I tried to "sanitize" the network information as I am 
recieving a IP address via DHCP.  Here is the unsantized version of the 
dhcpd.conf for clarity:

# dhcpd.conf
#
# Configuration file for ISC dhcpd (see 'man dhcpd.conf')
#

option domain-name="testdomain.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 155.97.16.130, 155.97.15.2;
                option routers 155.97.17.161;
        }

group {
        next-server 155.97.16.163;
        filename "pxelinux.0";
        host PXE-Client {
                hardware ethernet 00:02:B3:EF:75:39;
                fixed-address 155.97.17.169;
        }
}

The fact that I am able to try tftp on the local machine and I get the 
same problems as I do with a bootp request is perplexing, andy help is 
appreciated.

Geert Stappers wrote:

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>On Thu, Sep 08, 2005 at 01:25:04PM -0600, Jason Gerfen wrote:
>  
>
>>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
>>
>>    
>>
>   <snip/>
>  
>
>>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;
>>    
>>
>
>Don't put underscores in hostnames, they are not allow by RFC 1035
> ( http://www.ietf.org/rfc/rfc1035.txt )
>
>  
>
>>       filename "pxelinux.0";
>>       host PXE-Client {
>>               hardware ethernet 00:02:B3:EF:75:39;
>>               fixed-address 192.168.0.1;
>>    
>>
>                               ^^^^^^^^^^^^
>
>Doesn't match the previous address (range)
>
>  
>
>>       }
>>}
>>
>>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 
>>    
>>
>                       ^^^
>Previous was about address .1
>
>  
>
>>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 
>>    
>>
>Because server and client are on different IP networks
>
>  
>
>>filesize of 0 bytes.
>>    
>>
>File was created, but no data recieved.
>
>  
>
>>I am not able to find any information regarding this problem using 
>>google or searching the syslinux mailing list.  Any help is appreciated.
>>    
>>
>
>
>Connect the administrator of the network 155.97.17.160/255.255.255.224
>and ask for an address for the client ( so that it will be an other then
>192.168.0.* )
> 
>  
>
>>-- 
>>Jason Gerfen
>>
>>"In the absence of justice, what is sovereignty but organized robbery?"
>>~ Saint Augustine
>>    
>>
>
>
>Cheers
>Geert Stappers
>
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>  
>


-- 
Jason Gerfen
Student Computing Labs, University Of Utah
jason.gerfen at scl.utah.edu

J. Willard Marriott Library
295 S 1500 E, Salt Lake City, UT 84112-0860
801-585-9810

"My girlfriend threated to
 leave me if I went boarding...
 I will miss her."
 ~ DIATRIBE aka FBITKK