Hi Ian,
I had something similar when I set up my Mikrotik gateway. It turns out that the set of routes received from UCSD includes a route to UCSD itself - which was breaking RIPs ability to receive routes and causing oscillation as you are seeing.
After talking to Marius about it, my fix was to put in the following prefix-list and set "in-prefix-list=ampr-in" on my RIP interface
/routing prefix-lists add action=discard chain=ampr-in comment="stop us creating a tunnel back to UCSD which breaks RIP" prefix=44.0.0.1/32 prefix-length=32 add chain=ampr-in prefix=44.0.0.0/9 prefix-length=9-32 add chain=ampr-in prefix=44.128.0.0/10 prefix-length=10-32 add action=discard chain=ampr-in
Only the first entry in that prefix list is required to break the cycle of oscillation, the rest are there to reject any non-44net addresses if UCSD were to announce them to me.
I hope this helps,
Paul M0PLL
On 27/05/2020 19:56, Ian Redden via 44Net wrote:
Hi All;
When trying to connect, the IPIP tunnel on my Mikrotik box is flapping. I am using Mikrotik OS 6.46.6.
It connects, shows as registered/running, but after a random period of time, the link goes down. Eventually it reconnects and the entire process starts over again. While connected however, I am able to see the RIP routes.
Configuration: /interface ipip add allow-fast-path=no local-address=24.xx1.xx4.44 name=ucsd-gw remote-address=169.228.34.84
Any ideas?
Speed Test: https://cogeco-on.speedtestcustom.com/result/baacd8c0-a027-11ea-8085-870a92d...
Ian / VA3IAN _________________________________________ 44Net mailing list 44Net@mailman.ampr.org https://mailman.ampr.org/mailman/listinfo/44net