Some links on configuring MikroTik equipment as multiple switches (or even routers) using RouterOS
Posted by jpluimers on 2023/04/13
MikroTik switches and routers are very flexible to configure, as everything is done through [Wayback/Archive] RouterOS settings.
This means that given enough ports, you can split a physical switch into logical switches. This can be very convenient when you run multiple networks without VLAN.
Earlier this week, I already wrote about Torching a specific port on a MikroTik switch or router running RouterOS which involved turning off hardware acceleration off for specific ports in order to have the flow through the underlying switch chip prohibiting torch and filter features.
For splitting noticing which ports are connected to which switch chip is also important: splitting works best if you can configure each logical switch to exclusively use network ports on one switch chip.
This post was to both research how to configure this, and if my MikroTik devices would allow for hardware acelleration.
Here are some links that should help me with configuring (via [Wayback/Archive] mikrotik split switch in two – Google Search):
- [Wayback/Archive] Dividing one routerboard making it two separate wan routers – MikroTik – a thread explaining it is possible, but no examples how
- [Wayback/Archive] Splitting internal network – MikroTik – a thread explaining having dual LAN and a single WAN
- [Wayback/Archive] 1wan + 2 lan isolated from each other – MikroTik – is similar to the above thread
- [Wayback/Archive] Two Seperate LAN Networks Behind One RB750 ? – MikroTik – seems to explain what I want, including RouterOS example scripts
- [Wayback/Archive] hEX and creating two (switch or port) groups – MikroTik seems to push towards VLANs, I need to check that out as I might not need it.
–jeroen
Images
Images of a device that would have worked, but which I do not own:
- [Wayback/Archive] RB4011iGSplusRM_180903.png (1293×768) (dual RTL8367 switch chips, each serving 5 gigabit ethernet ports)
Images showing the block diagrams of various MikroTik routers and switches I own(ed).
- [Wayback/Archive.is] CRS226_161243.png (1284×839) (one switch chip serving 3 groups of 8 gigabit ethernet ports each through dual QSGMII chips, and 2 SFP+ ports (one can also do SFP) through 2 XAUI chips)
- [Wayback/Archive] CRS112-151027100733_151033.png (1148×785) (single Switch chip serving both 8 gigabit ports through dual QSGMII and 4 SFP ports through four SGMII chips)
- [Wayback/Archive] CRS305-1G-4Splus_181046.png (942×647) (one switch chip serving both the 4 SFP+ ports, and and one gigabit port through an AR8033 PHY SGMII chip)
- [Wayback/Archive] RB960PGS_161241.png (921×768) (single QCA8337 switch chip serving 5 gigabit ports)
The Wiert Corner - irregular stream of stuff 
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