HP VPN Firewall Appliances Network Management Configuration Guide

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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 111 Network diagram
Configuration procedure
1. Specify IP address for interface GigabitEthernet 0/1. (Details not shown.)
2. Configure the DHCP server:
# Enable DHCP.
<Firewall> system-view
[Firewall] dhcp enable
# Enable the DHCP server on GigabitEthernet 0/1.
[Firewall] interface gigabitethernet 0/1
[Firewall-GigabitEthernet0/1] dhcp select server global-pool
[Firewall-GigabitEthernet0/1] quit
# Configure DHCP address pool 0.
[Firewall] dhcp server ip-pool 0
[Firewall-dhcp-pool-0] network 10.1.1.0 mask 255.255.255.0
[Firewall-dhcp-pool-0] option 43 hex 80 0B 00 00 02 01 02 03 04 02 02 02 02
Verifying the configuration
Router can obtain its IP address on 10.1.1.0/24 and the PXE server addresses from Firewall. You can use
the display dhcp server ip-in-use command on the DHCP server to view the IP addresses assigned to the
clients.
Troubleshooting DHCP server configuration
Symptom
A client's IP address obtained from the DHCP server conflicts with another IP address.
Analysis
Another host on the subnet might have the same IP address.
Solution
1. Disable the client's network adapter or disconnect the client's network cable. Ping the IP address
of the client from another host to check whether there is a host using the same IP address.
2. If a ping response is received, the IP address has been manually configured on a host. Execute the
dhcp server forbidden-ip command on the DHCP server to exclude the IP address from dynamic
allocation.