User manual

BOOTP/DHCP Relay
Page 26-9
In this example, the VLAN defined by an IP protocol policy is used as a mechanism to group
the DHCP server and associated clients. The DHCP server is local, so all clients requesting an
IP address will be allocated an IP address on the same subnet.
♦ Note ♦
This configuration works if you require only one
DHCP
subnet. All clients received on the same router port will
be assigned to the same VLAN.
Note that the client’s request frames will also be received and forwarded by the
BOOTP relay
if it is configured.
The non-
DHCP workstations will be assigned to VLANs defined by Network Address policies.
These workstations already have manually configured IP addresses. They don’t require a
server to dynamically assign them an address. AutoTracker will move these workstations into
the VLANs with IP network address policies (VLAN 10 and VLAN 20).
It is true that these non-
DHCP workstations also match the IP protocol policy. However,
Network Address policies have precedence over IP protocol policies. If AutoTracker finds a
match on a Network Address policy, it does not look for a protocol policy match.
Enabling BOOTP/DHCP Relay
To enable UDP relay for BOOTP/DHCP:
At the prompt for the UDP Relay Configuration screen (the UDP Relay Configuration screen is
displayed using the
relayc command described in UDP Relay Configuration Screen on page
26-3), enter the following:
1=y
The screen redisplays with more configuration options for BOOTP/DHCP.
UDP Relay Configuration
1) BOOTP/DHCP Enabled : Yes
11) Server Address{list/add/delete} : UNSET
12) Forward Delay : 3
13) Maximum Hops : 4
2) NBNS Enabled : No
3) NBDD Enabled : No
4) +Generic Services Menu
Command {Item=Value/?/Help/Quit/Redraw/Save} (Redraw) :
The parameters are defined here.
Server Address
This parameter allows you to list, add, or delete the server address(es) to which the
BOOTP/
DHCP
relay will forward. The default is UNSET. When you have configured at least one valid
address, the value redisplays as
SET. Up to 8 addresses may be configured. The server address
cannot be an internal DHCP server configured through the IP Control feature. For more infor-
mation about IP Control, see the Switched Network Solutions User Manual.