Refer: Network Diagram Setup.
I have made a lab setup in my NOC for testing Redundancy on Mikrotik crs112-8g-4s-in & have been testing since quite a long time.
I have tried every possible config in Mikrotik but unable to make-through the redundancy using the Mikrotik-CRS device.
Note:
- The latest version of RouterOS is also installed.
- All other devices are Cisco Catalyst 3750, where in Core Switch i have set the bridge priority to 4096, so that the switch becomes the root-bridge.
Below are the observations:
• All ports of the Mikrotik-CRS go into DESIGNATED role with FORWARDING state. None of them go into Blocking or Alternate modes.
• Even if I change the rstp path-cost, rstp-bridge-priority, edge/non edge config etc there is no effect. The Mikrotik bridge shows as root bridge, also my core switch is the root bridge. The ports still remain in Forwarding designated mode only for the Mikrotik. Which is NOT a loop free topology.
Mikrotik Configured as:
Created a Bridge where the UPLINK interfaces are added to the Bridge & the VLANs are added on the Bridge.
Most Important point to note is that, even if the Root Bridge is the TECH switch (refer attachment) for vlan 3050, the Mikrotik-CRS considers itself as the Root Bridge for all vlans
& hence keeping all its ports in Designated Forwarding mode & not transiting into Blocking or Alternate mode.
kindly find the Image file for reference.
Please help so that my core router can become the root bridge in my network & not the Mikrotik-CRS.
