Axel AX3000 65 User's Manual - Manual (Page 230)

Appendix
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AX3000 - User's Manual
addresses and other network parameters to terminals and PCs when they are
powered on. This can greatly simplify managing large networks.
A.3.1 - Overview
Here is a brief description of Axel’s implementation DHCP:
- At boot time the AX3000 broadcasts DHCP requests to find the DHCP
server.
- If a DHCP server is found and correctly set-up, an IP address, and
subsequently other parameters are given to the AX3000.
- Before accepting the IP address the AX3000 can be set to check that the
IP address given really is free (ARP protocol).
- The IP address offered is given temporarily. This duration is called the
'Lease Time'.
- If a lease time has been entered through the AX3000 Set-Up, this lease
time is offered to the DHCP server, which may or may not accept this
value.
- The AX3000 is expected to renew its lease before the lease expires.
Once the lease has expired the AX3000 is no longer permitted to use the
assigned IP address.
- Generally an IP address is dynamically assigned out of a pool of IP
addresses. However static IP addresses can be associated to AX3000s
(for instance when the AX3000’s print server is used). This association is
performed either by using the AX3000 Ethernet address or by using a
'Client Identifier' (which is a character string entered through the AX3000
Set-Up) .
- The DHCP protocol can be considered as a superset of the BOOTP
protocol. IP addresses can also be offered to AX3000s by a BOOTP
server (in this case the 'lease time' is infinite).
- The AX3000 DHCP client protocol is compliant with RFCs 1533 and
1541.
This section deals only with the AX3000 DHCP protocol use. To set-up and
enable a DHCP server please read your operating system’s manual.
A.3.2 - Setting-Up the AX3000
DHCP protocol is set through either the AX3000 Quick Set-Up or the AX3000
Interactive Set-up. For more information, see Chapters 2 and 3.