For instructions on how to enable jumbo frames on CRS

RouterOS General
1

Hi,

You are using a CRS125, but you want to use jumbo frames.
However, it is not possible to change the MTU setting, and how to enable jumbo frames also command as follows: look to the content.

Are there ways to work on this issue?

Best regards

[admin@MikroTik] /interface ethernet switch port> set ether1 
action-on-restricted-unknown-sa
action-on-static-station-move
allow-multicast-loopback
allow-unicast-loopback
default-customer-pcp
default-service-pcp
drop-counter-config
drop-when-ufdb-entry-sa-drop
dynamic-mac-move-is-restricted-unknown-sa
egress-...
filter-priority-tagged-frame
filter-tagged-frame
filter-untagged-frame
ingress-...
isolation-profile
learn
learn-limit
learn-restricted-unknown-sa
mac-based-customer-vlan-for
mac-based-service-vlan-for
mac-based-vlan-translate
mac-vlan-type
pcp-propagation-for-initial-pcp
per-queue-scheduling
priority-to-queue
qos-change-dei
qos-change-dscp
qos-change-pcp
qos-dscp-to-dscp-mapping
qos-pcp-dei-map-...
qos-scheme-precedence
secure-static-mac-move-is-restricted-unknown-sa
2

If you mean “Jumbo Frames” checkbox in Winbox on CRS125, it is redundant and will be removed. Larger MTU is configurable the same way as for other router boards.

/interface ethernet set ether5 l2mtu=4064 mtu=4064
3

Thank you.

I was mistaken.
I was thinking of either the specification of 9000 bytes, but in the case of CRS I’m such until 4064 bytes.
Also check box of jumbo frame that’s redundant, I learned for the first time. However, this check box, is not that it is disabled if you noticed?

I was helpful to you.

Best regards