option121

Function

The option121 command configures the classless static route for the DHCP client.

The undo option121 command deletes a configured classless static route.

By default, no classless static route is configured.

Format

option121 ip-address { ip-address mask-length gateway-address } &<1-8>

undo option121 [ ip-address ip-address mask-length gateway-address ]

Parameters

Parameter	Description	Value
ip-address	Specifies the destination IP address.	The value is in dotted decimal notation.
mask-length	Specifies the mask length.	The value is an integer that ranges from 0 to 32.
gateway-address	Specifies the gateway address of a route.	The value is in dotted decimal notation.

Views

IP address pool view, DHCP Option template view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The option121 command applies to only the DHCP server. The option121 command configures Option 121 that defines a classless static route allocated to a client.

mask-length and gateway-address specify a classless static route. The option121 command configures a maximum of eight classless static routes.

Precautions

To configure multiple classless static routes, run the option121 command repeatedly.
The undo option121 command will delete all classless static routes. To delete one classless static route, run the undo option121 ip-address ip-address mask-length gateway-address command.

Example

# In the IP address pool view, configure classless static routes delivered by the DHCP server.

<HUAWEI> system-view
[HUAWEI] ip pool global1
[HUAWEI-ip-pool-global1] option121 ip-address 10.10.10.10 24 10.11.11.11

# In the DHCP Option template view, configure classless static routes delivered by the DHCP server.

<HUAWEI> system-view
[HUAWEI] dhcp option template template1
[HUAWEI-dhcp-option-template-template1] option121 ip-address 10.10.10.10 24 10.11.11.11