Cisco Cisco IOS Software Release 12.2(13)T
Cisco Easy VPN Remote Feature
Configuration Tasks
13
Cisco IOS Release 12.2(13)T
Note
The ip dhcp pool command supports a number of options for configuring the DHCP server pool. These
other options are typically not needed for a Cisco Easy VPN Remote configuration.
other options are typically not needed for a Cisco Easy VPN Remote configuration.
Verifying the DHCP Server Pool
To verify that the DHCP server pool has been correctly configured, use the following procedure.
Step 1
Use the show ip dhcp pool command in Privileged EXEC mode to display the server pools that have
been created:
been created:
Router# show ip dhcp pool
Step 3
Router(dhcp-config)# default-router
address
[
address2
...
address8
]
Specifies the IP address of the default router for a DHCP client.
You must specify at least one address. You can optionally specify
additional addresses, up to a total of eight addresses per
command.
You must specify at least one address. You can optionally specify
additional addresses, up to a total of eight addresses per
command.
Tip
The first IP address for the default-router option should
be the IP address that is assigned to the router’s Ethernet
address.
be the IP address that is assigned to the router’s Ethernet
address.
Step 4
Router(dhcp-config)# import all
Imports the following DHCP option parameters from a central
DHCP server into the router’s local DHCP database:
DHCP server into the router’s local DHCP database:
•
Domain Name
•
DNS Server
•
NetBIOS WINS Server
Note
This option requires that a central DHCP server be
configured to provide the DHCP options. The central
DHCP server should be on the same subnet as was
configured using the network option. (On Cisco IOS
routers, this is done using the ip dhcp database
command.) If you are using the PPP/IPCP protocol on the
WAN interface, or the client on the WAN interface
supports the Easy IP feature, the central DHCP server can
be on a different subnet or network.
configured to provide the DHCP options. The central
DHCP server should be on the same subnet as was
configured using the network option. (On Cisco IOS
routers, this is done using the ip dhcp database
command.) If you are using the PPP/IPCP protocol on the
WAN interface, or the client on the WAN interface
supports the Easy IP feature, the central DHCP server can
be on a different subnet or network.
Note
You can also specify the DHCP option parameters manually by using the domain-name, dns-server, and
netbios-name-server options but this is not recommended. Almost all installations should use the import
all option to ensure that the router is configured with the proper DHCP parameters.
netbios-name-server options but this is not recommended. Almost all installations should use the import
all option to ensure that the router is configured with the proper DHCP parameters.
Step 5
Router(dhcp-config)# lease {days
[hours][minutes] | infinite}
(Optional) Specifies the duration of the DHCP lease. The default
is a one-day lease.
is a one-day lease.
Step 6
Router(dhcp-config)# exit
Leaves DHCP pool configuration mode.
Step 7
Router(config)# ip dhcp excluded-address
lan-ip-address
Excludes the specified IP address from the DHCP server pool.
The lan-ip-address should be the IP address assigned to the
router’s LAN interface (for example, the Ethernet0 on the
Cisco uBR905/uBR925 routers and FastEthernet0 on the
Cisco 1700 series routers).
The lan-ip-address should be the IP address assigned to the
router’s LAN interface (for example, the Ethernet0 on the
Cisco uBR905/uBR925 routers and FastEthernet0 on the
Cisco 1700 series routers).
Command
Purpose