Alcatel Omni Switch/Router, User Manual

Page: 774 / 1100

BOOTP/DHCP Relay
Page 26-10
Forward Delay
The amount of time (typically in seconds, but determined by the client) the BOOTP/DHCP
relay will wait before forwarding a request to the server address. This delay gives a local
server a chance to respond to a client before the relay forwards it further out in the network.
This value may range from 1 to 65535.
Maximum Hops
The maximum number of relays that a packet can go through while traversing the network.
This limit keeps packets from “looping” through the network. Set this value to the maximum
number of
BOOTP/DHCP
relays you expect packets to traverse. This value may range from 1
to 16.
Configuring BOOTP/DHCP Relay Parameters
At least one server address must be configured for the
BOOTP/DHCP
relay. To configure the
server address:
1. On the UDP Relay Configuration screen prompt, enter
11=a
A screen displays similar to the following:
FORWARD TO Server List
Item Server address Server Name (if known)
Enter IP address or host name of server to be added to the list [‘h’ for help/<ret> to exit]
2. Enter the
IP
address, which may be a specific host on the network or a subnet broadcast
address. The address should be in dotted decimal format (i.e., 198.206.181.12) or hexadec-
imal address (i.e., 0xc6ceb501). Alternately you may enter a host name (i.e., system.com)
if the
DNS
resolver is enabled on the switch through the
res
command. The screen redis-
plays with the entry.
3. Repeat the previous step to add all the addresses to which you want to forward to. Press
Enter
when you are finished adding addresses. The screen redisplays with the Server
Address field set to
SET
.
4. Make any changes to Forward Delay or Maximum Hops.
5. Enter
s
to save your changes. If the relay has just been enabled, the system initializes the
relay. If the relay is already running, it is stopped and reinitialized with the changes.
6. Enter
q
to quit the UDP Relay Configuration screen.
By default, Alcatel’s implementation of
BOOTP
rejects packets less than 300 bytes. To prevent
BOOTP
from discarding packets smaller than 300 bytes add the following line to the
mpx.cmd
file:
bootpSizeCheck=0
This line must appear before the
cminit
line.