MLAG configuration in CRS326-24s

RouterOS General
1

Hi all.

I’m new to the Mikrotik universe and I’m trying to configure MLAG with two devices.

I am doing all the steps in the post: https://help.mikrotik.com/docs/display/ROS/Multi-chassis+Link+Aggregation+Group

But when I run the last step in “/interface bridge mlag” to create mlag it shows the message: “not hw offloaded”.

Is this because hw-offloading needs to be disabled?

I tried with this command and the message does not change:

/interface/ethernet/switch set 0 l3-hw-offloading=no
/interface/ethernet/switch/port set [find] l3-hw-offloading=no

Does anyone have any idea what I should do?

thanks

2

Hi o/,
same with 2x CRS518 and routeros 7.14.1

[admin@CRS02] > /interface/bridge/mlag/print   
         ;;; not hw offloaded
     bridge: bridge1
  peer-port: bonding1
[admin@CRS02] > /interface/bridge/mlag/monitor 
      ;;; not hw offloaded
  status: disabled

[admin@CRS02] > /interface/ethernet/switch/l3hw-settings/monitor
;;; L3HW is not running

Activating or deactivating hw offloading on the switch chip has no influence on the message. Off should be correct according to the documentation.
I’m not sure what “;;; not hw offloaded” means if off is correct?

3

The answer is in the first caution box on the documentation page you linked to: “The MLAG is not compatible with L3 hardware offloading. When using MLAG, the L3 hardware offloading must be disabled.”

4

But isn´t it disabled when it looks like this? Or is there a different off switch for “L3 hardware offloading”?

[admin@CRS02] > /interface/ethernet/switch/l3hw-settings/monitor
;;; L3HW is not running
5 
[admin@CRS01] > /interface/bridge/mlag/print         
         ;;; not hw offloaded
     bridge: bridge1
  peer-port: bonding1
[admin@CRS01] > /interface/ethernet/switch/print
Columns: NAME, TYPE, L3-HW-OFFLOADING, QOS-HW-OFFLOADING
# NAME     TYPE              L3-HW-OFFLOADING  QOS-HW-OFFLOADING
0 switch1  Marvell-98DX8525  no                no               
1 switch2  Atheros-8227      no                no               
[admin@CRS01] > /interface/ethernet/switch/port print
Flags: R - RUNNING
Columns: NAME, SWITCH, L3-HW-OFFLOADING, STORM-RATE
 #   NAME         SWITCH   L3-HW-OFFLOADING  STORM-RATE
 0   ether1       switch2                              
 1 R qsfp28-1-1   switch1  no                       100
 2   qsfp28-1-2   switch1  no                       100
 3   qsfp28-1-3   switch1  no                       100
 4   qsfp28-1-4   switch1  no                       100
 5 R qsfp28-2-1   switch1  no                       100
 6   qsfp28-2-2   switch1  no                       100
 7   qsfp28-2-3   switch1  no                       100
 8   qsfp28-2-4   switch1  no                       100
 9   sfp28-1      switch1  no                       100
10   sfp28-2      switch1  no                       100
11   sfp28-3      switch1  no                       100
12   sfp28-4      switch1  no                       100
13   sfp28-5      switch1  no                       100
14   sfp28-6      switch1  no                       100
15   sfp28-7      switch1  no                       100
16   sfp28-8      switch1  no                       100
17   sfp28-9      switch1  no                       100
18   sfp28-10     switch1  no                       100
19   sfp28-11     switch1  no                       100
20   sfp28-12     switch1  no                       100
21   sfp28-13     switch1  no                       100
22   sfp28-14     switch1  no                       100
23   sfp28-15     switch1  no                       100
24 R sfp28-16     switch1  no                       100
25   switch1-cpu  switch1                           100
26   switch2-cpu  switch2
6

The problem seems to have been related to the bond.
If I don’t do the MLAG synchronisation on the bond, it works.