(2) Different RB5009.. Different Max entries for conn tracking

RouterOS General
1

I have two different rb5009.. one on 7.12.1 and another on 7.15.3 and I notice that the max-entries are different.. I was wondering why.. I will show the prints for both

This is on 7.15.3

 enabled: auto
               active-ipv4: yes
               active-ipv6: yes
      tcp-syn-sent-timeout: 5s
  tcp-syn-received-timeout: 5s
   tcp-established-timeout: 12h
      tcp-fin-wait-timeout: 10s
    tcp-close-wait-timeout: 10s
      tcp-last-ack-timeout: 10s
     tcp-time-wait-timeout: 10s
         tcp-close-timeout: 10s
   tcp-max-retrans-timeout: 5m
       tcp-unacked-timeout: 5m
        loose-tcp-tracking: yes
               udp-timeout: 10s
        udp-stream-timeout: 3m
              icmp-timeout: 10s
           generic-timeout: 10m
               max-entries: 970752
             total-entries: 257

and here is the other one which is on 7.12.1

enabled: auto
               active-ipv4: yes
               active-ipv6: yes
      tcp-syn-sent-timeout: 5s
  tcp-syn-received-timeout: 5s
   tcp-established-timeout: 30m
      tcp-fin-wait-timeout: 10s
    tcp-close-wait-timeout: 10s
      tcp-last-ack-timeout: 10s
     tcp-time-wait-timeout: 10s
         tcp-close-timeout: 10s
   tcp-max-retrans-timeout: 5m
       tcp-unacked-timeout: 5m
        loose-tcp-tracking: yes
               udp-timeout: 10s
        udp-stream-timeout: 3m
              icmp-timeout: 10s
           generic-timeout: 10m
               max-entries: 1015808
             total-entries: 113

is this something I should be concerned about.. Should I have them both on 7.12. or 7.15.

2

If the routers work as they should I would leave them alone.

You are using
297 out of 970752
on the one and
113 out of 1015808
on the other.
The max-entries depend on the amount of free RAM on the specific machine, it is calculated automatically and it is a read-only property:
https://help.mikrotik.com/docs/display/ROS/Connection+tracking

max-entries (integer)

Max amount of entries that the connection tracking table can hold. This value depends on the installed amount of RAM.

Note that the system does not create a maximum-size connection tracking table when it starts, it may increase if the situation demands it and the system still has free RAM, but the size will not exceed 1048576

total-entries (integer) Amount of connections that the connection table currently holds

It is possible that the one (or the other) Ros version and/or the one or the other configuration takes up a little bit less or a little more RAM, so it is probably impossible to have exactly the same value on two machines (why?).

3

… and that’s what I’d expect to see when both (identical) devices run different versions of ROS. The next question is whether they both have identical set of packages installed (and enabled). Etc.