Correct. Router (L3 GW) → Core Switch (L3 CRS switch with all the VLANs) → Access Switches (downstream L2 switches) → Devices
→ Correct and yes a single up-link from the CRS to the RB gateway unless you want to add redundant core switches and redundant RB with redundant internet circuits and add the spice to deal with VRRP.
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Again, Thank you!
Going to make assumption you’re running the CRS in “RouterOS” mode? As appears swOS is only Layer2 mode and no Layer3 for IP route 0.0.0.0/0 back to the Edge Router (RB) device?
Very cost effective L3 switch… Now if ONLY MikroTik release 48port POE L3 switch =)
thank you kstenik for this great and clear explanation for static routing between two MTs
I just wanna make sure of this point: do i have to set an ip subnet based on vlan interface for the CRS ( or RB2011 in my case that will do the vlan switching traffic)
in order to get full wire speed regarding the point-to-point link with the edge router ?
I mean what if i just configure an ip subnet on a physical interface on both MTs and do the static routing configuration?
It only makes sense to think about wirespeed when forwarding frames on L2 from one interface of a device to another; in this case, “wirespeed” means switching and “CPU speed” means bridging. If you route via an interface, it’s always CPU speed. So if you have two devices in the same VLAN and IP subnet, each connected to another port of a 2011, it only matters what you do on the 2011 whether the 2011 itself will forward between the devices using its switch chips of using its CPU. If the 2011 itself doesn’t need to talk with any of the devices, it doesn’t need an /interface vlan in that VLAN at all. If the 2011 is actually one of the two devices which talk to each other, there is no wirespeed to talk about.
@ksteink,
thank you so much. I really appreciate your effort to share what you know. I really appreciate it. Your explanation is so understandable that I spend more time reading your comments.
I am new to MikrtoTik routers. I just start reading .
I have two questions :
As my understanding ‘switch1-cpu’ is a port between the switch and cpu. But what is the difference between it and the bridge interface ? I couldn’t visualize it.
where are ether1 and wlan interfaces gone in your configuration ? It is not in the bridge, isn’t it ? What would happen if we bridge wlan with other physical and virtual interfaces ? Vlans route each other using IP of vlan interfaces. But what is bridge interface for ? of course, you didn’t include it in your configuration.
The bridge contained interfaces like ether2 and ether3 and vlans 100 ,200 but ether2, for example, is in vlan 100, why this redundancy for ? I know there is something I do not understand. That is what I am looking for…
