I went about upgrading a spare RBG450G router with version 6.42.1 and used the backup from an existing RG450G router running 6.34.1 which is working ok. Then I swopped over the connections in to the new router, only to find that it wouldn’t connect to one of our network segments which sits behind a CCR1036 running 6.23, and had to regress the change and put the old router back instead. I noticed that on the new software version there are confige changes
/interface bridge
add fast-forward=no name=“Local Network”
add fast-forward=no name=loopback
/interface bridge port
add bridge=“Local Network” disabled=yes interface=“ether2 - Internal LAN”
add bridge=“Local Network” disabled=yes interface=“ether3 - N/A”
add bridge=“Local Network” hw=no interface=“ether1 - Backbone To Blade Router”
add bridge=“Local Network” disabled=yes interface=“ether4 - DSL”
add bridge=“Local Network” disabled=yes interface=“ether5 - DSL”
The items in bold and in italics were added to the config by upgrading to the latest software version. Could these be causing the issue.
Have you checked changelog before upgrading your device? https://mikrotik.com/download/changelogs
What’s new in 6.41 (2017-Dec-22 11:55):
Important note!!! > Backup before upgrade!
RouterOS (v6.40rc36-rc40 and) v6.41rc1+ contains new bridge implementation that supports hardware offloading (hw-offload).
This update will convert all interface “master-port” configuration into new bridge configuration, and eliminate “master-port” option as such.
Bridge will handle all Layer2 forwarding and the use of switch-chip (hw-offload) will be automatically turned on based on appropriate conditions.
The rest of RouterOS Switch specific configuration remains untouched in usual menus for now.
Please, note that downgrading to previous RouterOS versions will not restore “master-port” configuration, so use backups to restore configuration on downgrade.
I have looked on the CCR1036 router which this one will be connecting to. If Master port is configured on the routers would it have Master port shown in the config, or would it still be shown as bridge.
Below are the details of the from the two RBG450G one with the upgrade to 6.42.1 and one on the old version 6.34.1 which then connects to the CCR1036 with version 6.23.
None of them have a config for “Master port”
Is there any know issues between the two software versions that may cause the issue, also is there anything else I could look at that maybe causing the issue that I may be missing.
Thank you in advance your help is much appreciated.
