IP Routing
6-8
8000-A2-GB21-30
April 1998
NOTE:
If an end user has a static configuration (that is, the user manually enters
an IP address and the DSLAM and the RTU have a static host route),
then the end user will not be allowed to obtain the same IP address via
DHCP.
If an end user obtains an IP address via DHCP, then that IP address is
bound to a particular DSL port (behind which the end user resides) on the
DSLAM. In this case, the DSLAM will reject DHCP
requests/renewals/releases for the same IP addresses from ports other
than the one from which the IP address was bound.
General DHCP Relay Agent Configuration
To configure a DHCP relay agent, you must do the following:
1. Make sure that the gateway address used in relaying DHCP requests is
configured as an e1a address on the IP Network screen
(
Configuration
→
Interfaces
→
IP Network).
2. Assign domain names to the e1a addresses that will be used as DHCP
gateway addresses. Assign these domain names on the Domain Names
screen (
Configuration
→
DHCP Relay
→
Domain Names
).
3. Configure the first four NSP domain names on the Servers 1–4 screen
(
Configuration
→
DHCP Relay Servers
→
Servers 1–4
) and the remaining NSP
domain names on the Servers 5–8, 9–12, and 13–16 screens.
On the appropriate DHCP Relay Servers screen, you will need to enter up to
two DHCP Server IP addresses for each domain. You will also need to
determine whether or not you want to use the authentication feature. There
are several fields that must be completed if you plan to use the authentication
feature. In addition, you must also give the administrator of the authentication
server some necessary information. See
Notes to the Authentication Server
Administrator
for more information.
For detailed information about the various DHCP relay screens, see the
Hotwire
DSLAM for 8540 and 8546 DSL Cards User’s Guide.
Also Appendix A,
Network
Configuration Worksheets
, in this guide provides worksheets to help you plan and
record your network configurations for dynamic IP addressing.