detect retransmit (dynamic-pool)

Format

detect retransmit retransmit-value interval day hour minute

undo detect [ retransmit [ retransmit-value interval [ day hour minute ] ] ]

Parameters

Parameter	Description	Value
interval day	Specifies the interval days for detecting address segment availability.	Specifies days. The value is an integer ranging from 0 to 999. The default value is 0.
hour	Specifies the interval hours for detecting address segment availability.	Specifies hours. The value is an integer ranging from 0 to 23.
minute	Specifies the interval minutes for detecting address segment availability.	Specifies minutes. The value is an integer ranging from 0 to 59. The default value is 30.
retransmit retransmit-value	Specifies the number of retransmission times.	The value is an integer ranging from 1 to 10. The default value is 2.

Views

IP address pool view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
aaa-access	write

Usage Guidelines

Usage Scenario

The BRAS sends messages to the RADIUS server at intervals to detect the address segment availability. If an address segment is allowed by the RADIUS server, the RADIUS server responds with a detection success message. If not, the RADIUS server responds with a detection denial message.

If the RADIUS server is unreachable, the BRAS retransmits the detection message to the RADIUS server for a configured number of times. If the RADIUS server is still unreachable, the BRAS sets the address segment to Locked and does not assign addresses in this address segment to subsequent access users. After all users go offline, the BRAS sends a request to the RADIUS server for releasing this address segment. If the BRAS receives a response to the address segment release request, it deletes the address segment. If not, the BRAS deletes the address segment only after the local timer expires.

If an address segment is Locked, the BRAS can still send messages to detect the availability of it. If detection is successful, the BRAS sets the address segment to Unlocked so that the address segment becomes available.

Precautions

In VS mode, this command is supported only by the admin VS.

The retransmission interval must be configured based on the RADIUS server performance.

Example

# Configure the number of retransmission times as 5 and a retransmission interval of 30 minutes for detecting address segment availability in a dynamic address pool.

<HUAWEI> system-view
[~HUAWEI] ip pool huawei bas dynamic
Info: It's successful to create an IP address pool
[*HUAWEI-ip-pool-huawei] commit
[~HUAWEI-ip-pool-huawei] detect retransmit 5 interval 0 0 30