s.pandilwar

 Profile Answers by s.pandilwar 

• Jan 28th, 2011

 

Preboot Execution Environment (PXE) :- When we are trying to boot system from network we need to enable PXE boot device from BIOS. It is helpful to install OS from network & it will pick IP address automaticaly. It is helpful in large network were we cannot install OS manualy.

sharmavivek096

 Profile Answers by sharmavivek096 

• Jun 2nd, 2011

 

The Preboot eXecution Environment (PXE, also known as Pre-Execution Environment; sometimes pronounced "pixie") is an environment to boot computers using a network interface independently of data storage devices (like hard disks) or installed operating systems.PXE was designed to be applicable to many system architectures.
The 2.1 version of the specification assigns architecture identifiers to six system types, including IA-64 and DEC Alpha. However, the specification only completely covers IA-32. Intel included PXE in the EFI for IA-64, creating a de-facto standard with the implementation.
To initiate a PXE bootstrap session the PXE firmware broadcasts a DHCPDISCOVER packet extended with PXE-specific options (extended DHCPDISCOVER) to port 67/UDP (DHCP server port). The PXE options identify the firmware as capable of PXE, but they will be ignored by standard DHCP servers. If the firmware receives DHCPOFFERs from such servers, it may configure itself by requesting one of the offered configurations.