Black Box 5000 series Reference Manual page 139

5 - Relay Destination
The Relay destination option allows you to enter the IP address of the remote DHCP server to which DHCP client
data will be routed. Note: BootP Relay should only be used with leased line connections, it is not recommended
when using any form of connection management (spoofing, IP address connect) on a dial-up line.
Default: none
6 - ICMP Echo Verification
The ICMP echo verification option enables or disables the ping allocated IP address. If enabled, ICMP Ping messages
may be sent to the specified IP address when a Ping command is issued.
Default: enabled
7 - Lease Period
The Lease period option sets the length of time (in minutes) that an assigned IP address will be allocated to a DHCP
client.
Default: 60
Range: 10 to 65535 minutes
8 - Default gateway
The Default Gateway option allows the identification of a default gateway (i.e. router). Messages destined for hosts not
on this (sub-)network are forwarded to the default gateway. The default gateway may be located on the local LAN or
may be one of the remote site peer IP routers.
Note: If using raw 1490 Frame Relay, either enable "Auto Default Route" or configure the Default Gateway remote site
peer address to access the Default Gateway.
If PPP is used and the IP address of the remote site peer IP router is not known, the default gateway may be defined as
the remote site ID. This will cause the default gateway to become whatever device is currently connected at that remote
site.
When an SNMP message is to be sent to an NMS, first the routing table is checked for a known route. If a route to the
NMS is unknown, the SNMP message will then be sent to the default gateway. If the default gateway cannot provide
the best route, it will send the message to the gateway that can provide the best route. After the default gateway sends
the message to the other gateway for delivery, the default gateway will send an ICMP Redirect message back to the
router that points to the best route gateway. In this manner, the router is informed of the best route for future SNMP
message delivery.
A configured Default Gateway will override a default route learned from RIP. If more than one default gateway is
defined within the routing table, the default gateway with the lowest cost will be used and displayed in this option.
Default: [automatic]
Enter :
automatic, none, ip_address (up to 15 characters)
>
Menus Reference Manual: DHCP Set-Up Menu
139