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Riverstone Networks RS Switch Router User Guide Release 8.0 10-3
DHCP Configuration Guide Updating the Lease Database
10.1.3 Configuring a Static IP Address
To define a static IP address that the DHCP server can assign to a client with a specific MAC address, enter the
following command in Configure mode:
10.1.4 Grouping Scopes with a Common Interface
You can apply several scopes to the same physical interface. For example, scopes can define address pools on different
subnets that all are accessed through the same RS port. In this case, scopes that use the same interface must be grouped
together into a “superscope.”
To attach a scope to a superscope, enter the following command in Configure mode:
10.1.5 Configuring DHCP Server Parameters
You can configure several “global” parameters that affect the behavior of the DHCP server itself.
To configure global DHCP server parameters, enter the following commands in Configure mode:
10.2 UPDATING THE LEASE DATABASE
After each client transaction, the DHCP server does not immediately update the information in the lease database.
Lease update information is stored in flash memory and flushed to the database at certain intervals. You can use the
dhcp global set commit-interval
command to specify this interval; the default is one hour.
Define static IP address for a particular
MAC address.
dhcp
VFRSH!
define static-ip
LSDGGU!
mac-address
PDFDGGU!>SDUDPHWHU!YDOXH!@
Attach a scope to a superscope.
dhcp
VFRSH!
attach superscope
QDPH!
Specify a remote location to back up the
lease database.
dhcp global set lease-database
XUO!
Specify the intervals at which the lease
database is updated.
dhcp global set commit-interval
KRXUV!