ospf NSSA extremely unstable while stubs are great

RouterOS Forwarding Protocols
1

Anyone have any advice/fix for OSPF NSSA areas being rediculously unstable?

I have a VPN cloud with a mix of PPTP over ipsec and SSTP over 45 sites. I have 2 core routers (VPN target) and I have 2 tunnels on each remote router, one for each core router. I also have some site-2-site VPN connections. I use a single OSPF stub to make routing easy.

I want to change these links to nssa because I have a number of other subnets that are not part of the OSPF area and stub zones can’t import these. unfortunately nssa isnt stable. my links come up but then go down in a very short cycle.

Any known issues or known fixes?

2

migth this be the same? :

http://forum.mikrotik.com/t/ospf-3-10-bug-database-description-packet-has-different-mas/28207/1

3

No exactly. Also, that thread is for RouterOS 3.10 while I’m up on 5.18. The last post does fit my issue though.

4

This issue still occur in 5.18. its nothing different. ( I have not tried 6.X beta, but dont want to try in production)

also se http://forum.mikrotik.com/t/database-description-packet-has-different-master-status-flag/30658/1

5

Can someone from Mikrotik chime in here? Seems like nssa is completely non-functional.

6

Yes, there are known problems with NSSA. Problems will be fixed in new routing package.

7

Thanks mrz. Can you give us any info on when to expect this routing package? in 5.x or will it wait for 6?

I am in need of this and it is causing a bunch of manual routing for my having only stub areas to work with and also, I can’t extend my backbone which is a hassle.

8

new routing will be available only in v6.

9

mrz, excuse me if this is in an obvious place. Is there a v6 roadmap? With planned features and release targets?

Also, I can’t find anything but forum posts about this nssa issue, it would be nice if it were documented somewhere, maybe the wiki.

Thanks

10

resurrection! :slight_smile:

mrz, can you provide any update here? v6 has been in the wild for a while, but I can’t see much info on the OSPF nssa issue. I have almost 100 routers on v5.x and I’m stuck with stub areas until there is a solution to this nssa problem. Thanks

11

I would add that I don’t see a ‘new routing’ package and I don’t know of the routing package in 6rc13 etc etc is ‘new routing’

12

any update here, it’s been a long time and these forums are completely lacking on ‘new routing’ or anything like that for v6 which is out in the wild now. Do NSSA areas work properly?

13

We have done some fixes in v6. These chenges fixed also some known problems with NSSA.
You can try v6.1 and see if it works in your setup.

14

good morning

mrz i have a problem i have some mikrotik with two WAN working with ospf nssa, i use diferent cost in the interface by example 500 in one, 250 in the other. the problem star when i just configure the router and the OSPF everything work good but dasy after that i see and the traffic download by one interface and upload for the other, i have a lot of mikrotik with the same problem and i put some the bandwidth int one of the interface and the traffic download and upload for the other wan