access-line-id update online
Function
The access-line-id update online command enables a device to update the Option 82 information of an online user through a DHCP Request message for lease renewal.
The undo access-line-id update online command disables a device from updating the Option 82 information of an online user through a DHCP Request message for lease renewal.
By default, the device is not enabled to update the Option 82 information of an online user.
This command is supported only on the NetEngine 8000 F1A.
Usage Guidelines
Usage Scenario
To enable a device to update the Option 82 information of an online user through a DHCP Request message for lease renewal, run the access-line-id update online command so that the updated Option 82 information can be sent to the RADIUS server through an accounting packet.
Prerequisites
The Layer 2 command user type or Layer 2 leased line user type has been configured using the access-type layer2-subscriber or access-type layer2-leased-line command in the BAS interface view.
The client-option82 command has been run in the BAS interface view to enable a device to trust the Access-Line-ID information sent from clients.Precautions
In VS mode, this command is supported only by the admin VS.
The dhcp option82-mismatch action offline and access-line-id update online commands cannot be both run in the same bas interface view. If lease proxy is enabled using the dhcp lease-proxy command, when the BRAS functions as a proxy device to process renewal packets, the Option 82 information is not updated. The Option 82 information is updated only when a user sends renewal packets to a local or remote DHCP server.Example
<HUAWEI> system-view [~HUAWEI] interface GigabitEthernet0/1/1.1 [~HUAWEI-GigabitEthernet0/1/1.1] bas [~HUAWEI-GigabitEthernet0/1/1.1] access-type layer2-subscriber [*HUAWEI-GigabitEthernet0/1/1.1] commit [~HUAWEI-GigabitEthernet0/1/1.1] access-line-id update online