Alcatel Omni Switch/Router, Руководство пользователя

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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
VLAN
s 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
VLAN
s 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
.