Captive portal RADIUS Accounting and Acct-Interim-Interval attribute not working

[saleh]

Hello,

We need to update captive portal accounting every 600 seconds. In the current setting the update made every 6 seconds. We think to use the Acct-Interim-Interval attribute so that we have changed the test user profile like the below:

test Cleartext-Password := "testing123", Simultaneous-Use := "1"
        Acct-Interim-Interval := 600,
        Framed-Protocol = PPP

But after testing we found the Acct-Interim-Interval attribute have no effect (Not working) and the accounting update made every 6 seconds like the below example:

Sat Aug 24 20:57:55 2024
        NAS-Identifier = "66c122ef7fec9"
        Service-Type = Framed-User
        Framed-Protocol = 15
        NAS-Port = 0
        NAS-Port-Type = Ethernet
        User-Name = "test"
        Acct-Status-Type = Interim-Update
        Acct-Session-Id = "mf2CWztLHGcqmOs11VvR+A=="
        Acct-Authentic = Local
        Acct-Session-Time = 683
        Acct-Input-Octets = 5252767
        Acct-Output-Octets = 6038308
        Framed-IP-Address = 192.168.1.201
        NAS-IP-Address = 127.0.0.1
        Event-Timestamp = "Aug 24 2024 20:57:55 EEST"
        Acct-Unique-Session-Id = "912d036be955f3df393c422e346ffa99"
        Timestamp = 1724522275

Sat Aug 24 20:58:01 2024
        NAS-Identifier = "66c122ef7fec9"
        Service-Type = Framed-User
        Framed-Protocol = 15
        NAS-Port = 0
        NAS-Port-Type = Ethernet
        User-Name = "test"
        Acct-Status-Type = Interim-Update
        Acct-Session-Id = "mf2CWztLHGcqmOs11VvR+A=="
        Acct-Authentic = Local
        Acct-Session-Time = 689
        Acct-Input-Octets = 5253158
        Acct-Output-Octets = 6038468
        Framed-IP-Address = 192.168.1.201
        NAS-IP-Address = 127.0.0.1
        Event-Timestamp = "Aug 24 2024 20:58:01 EEST"
        Acct-Unique-Session-Id = "912d036be955f3df393c422e346ffa99"
        Timestamp = 1724522281

Any idea how to fix this issue.
Thank you