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Guscht
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Difference between Idle Time / Host Dead Time?

Sat May 29, 2021 12:57 am

Hi,

can anyone explain whats the difference between the Idle Time and the Host Dead Time?

Idle is explained by Mikrotik-Wiki:
idle-time (read-only; time) : time user has been idle

Unfortunately Host Dead Time is not explained and it differs sometimes (not always) from Idle:

Zwischenablage01.jpg
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jonathanhauck
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Re: Difference between Idle Time / Host Dead Time?

Sat May 29, 2021 7:24 am

Indeed! I cannot find any information about the Host Dead Time so I cannot give any differences about these two. Where did you heard about it? bubble shooter
 
Guscht
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Re: Difference between Idle Time / Host Dead Time?

Tue Jun 01, 2021 1:20 am

Indeed! I cannot find any information about the Host Dead Time so I cannot give any differences about these two. Where did you heard about it?

Its under Hotspot -> Hosts - you can add the column "Dead Host Time":
Unbenannt-1.jpg

I investigated and found something in an old ROS V2.9 documentation:
https://www.manualslib.com/manual/49190 ... l?page=530

host-dead-time(read-only: time) - how long has the router not received any packets (including ARP replies, keepalive replies and user traffic) from this host

Now, the question is, why differ the Idle-Time and the Host-Dead-Time sometimes?

I did a few tests and it seems Idle-Time refers to "user traffic" only - not network traffic data itself. As an example, if I ARP-request the host (ARP-Ping, I'd consider ARP as "network traffic", not "user traffic"), I will get an reply, the Host-Dead resets but the Idle does not. If the Host leaves the wifi-coverage area, Idle and Host-Dead are the same. But it seems if the Host does simply nothing, but some network related stuff goes on (ARP...), the Idle counts up, but the Host-Dead resets.

One question remains, why has Mikrotik purged this from their current documentation?
https://help.mikrotik.com/docs/pages/vi ... d=56459266
https://wiki.mikrotik.com/wiki/Manual:IP/Hotspot
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