HP FlexNetwork MSR2003 Configuration Manual page 78

Configure the address allocation scheme as follows:
Assign PXE addresses
2.3.4.5 and 3.3.3.3
1.2.3.4 and 2.2.2.2.
The DHCP server assigns PXE server addresses to DHCP clients through Option 43, a custom
option. The formats of Option 43 and PXE server address sub-option are shown in
and Figure 21. For example, the value of Option 43 configured in the DHCP address pool is 80 0B 00
00 02 01 02 03 04 02 02 02 02.
•
The number 80 is the value of the sub-option type.
•
The number 0B is the value of the sub-option length.
•
The numbers 00 00 are the value of the PXE server type.
•
The number 02 indicates the number of servers.
•
The numbers 01 02 03 04 02 02 02 02 indicate that the PXE server addresses are 1.2.3.4 and
2.2.2.2.
Figure 29 Network diagram
Configuration procedure
1. Specify an IP address for interface GigabitEthernet 2/0/1. (Details not shown.)
2. Configure the DHCP server:
# Enable DHCP.
<RouterA> system-view
[RouterA] dhcp enable
# Create DHCP user class ss and configure a match rule to match DHCP requests in which the
hardware address is six bytes long and begins with aabb-aabb.
[RouterA] dhcp class ss
[RouterA-dhcp-class-ss] if-match rule 1 hardware-address aabb-aabb-0000 mask
ffff-ffff-0000
[RouterA-dhcp-class-ss] quit
# Create DHCP option group 1 and customize Option 43.
[RouterA] dhcp option-group 1
[RouterA-dhcp-option-group-1] option 43 hex 800B0000020203040503030303
# Enable the DHCP server on GigabitEthernet 2/0/1.
[RouterA] interface gigabitethernet 2/0/1
[RouterA-GigabitEthernet2/0/1] dhcp select server
[RouterA-GigabitEthernet2/0/1] quit
# Create DHCP address pool 0.
[RouterA] dhcp server ip-pool 0
# Specify the subnet for dynamic address allocation.
[RouterA-dhcp-pool-0] network 10.1.1.0 mask 255.255.255.0
# Customize Option 43.
To clients
The hardware address in the request is six bytes long and
begins with aabb-aabb.
Other clients.
64
Figure 19