Alcatel Carrier Internetworking Solutions Switch/Router ユーザーズマニュアル

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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.