I have been watch “The Network Trip” on youtube and many other videos try to make sure that my - CRS328-4C-20S-4S+ is set to use the switch chip properly and as far as i can tell i have everything right as the H flag is on all the interfaces on the bridge. But im doing also reading about the 16k FDB unicast entries. Does this mean there can be 16k mac address learned? Also do these duplicates in the image present a problem.. Just got the confidence to use this switch with routeros over switchos and im much happier but i just want to make sure that Im doing everything right.
I just figured out that all those duplicates are attached to the different vlan tags coming from the switches they are connected to.. I guess i am still wondering if the 16k Unicast FDB entries means that it can handle 16 thousand client mac address attached.
Thanks again !
Each entry counts towards total entries, so the “Duplicates” count each one, it has to build ARP entries for every VLAN as they are each considered a separate LAN
I have this microtik connected to my cisco switches.. and ive disabled all the vlans that i am not using on the mikrotik but it still seems to learn the mac address of the vlans either way. on my cisco switches i have the port set to,
switchport mode trunk which is set to pass all vlans. Is it possible to change a setting in the microtik to only learn the vlans that i have enabled, and not every vlan that just exist on the trunked port on the cisco?
I believe just ticking on “Ingress Filtering” did the trick. Once a Mac is learned, will it ever leave the table, or does it take an interface reset for it to be removed from the table. Also wondering if this causes strain on the CPU. Thank you
