Hi Brett

> Hi Paolo,
>
> It was pretty bad in early releases of 6, so I've stayed far from it.

me too... :(

(hey 6.x is still "beta" not stable)

> I've recently found a serious issue with 5.26 where the default route
> from BGP occasionally fails to be redistributed into OSPF, obviously
> causing issues for the rest of the network.

hum... I am running 5.26 on powerpc (OSPF + BGP) and I never had this 
issue but maybe it's because I have a different configuration

Just an idea: for that specific link try to use ONLY BGP (i.e. eBGP + 
iBGP) so that you have the full route on the "second" layer routers and 
you can use whatever you want there

the only issue that I see is: and if the "poisoning" is arriving from te 
OSPF core?

Again I suggest you to use iBGP it will help a lot

 > Especially when it happens
> on all of our edge routers at the same time.

it's often the "poisoning" issue of OSPF :(

 > The solution from Mikrotik
> Support was to use 6.2 or greater.
>

well I was using 6.x on my border and after some time the interfaces 
were disappearing, and doing strange things. I had to reboot and I do 
not like to reboot the edge...

> I've been testing 6.7 on a RB450G and so far it's been working without
> issues. I haven't tested BGP yet.
>
> Do you (or anyone) have any recommendations for/against using 6.7 on a
> MIPSBE RouterBoard (not Power PC) for BGP with a default route, and
> running OSPF? Nothing fancy, no filtering, etc. Any known stability
> issues with this basic configuration on 6.7?
>

well I am still away from 6.x for its stability issues. On CCR 6.7 has 
some flapping issues with the interfaces, people report to turn on the 
LCD display to have better stability etc.
So, maybe it's because CCR is a new product, but what I see is that 6.x 
is still out of control (well... the routeros in general is out of control)

Another option: you could run your edge on openbsd, it works great (I 
used it for years). Not sure about the performances, I mean >1Gb traffic




-- 


Ing. Paolo Di Francesco

Level7 s.r.l. unipersonale

Sede operativa: Largo Montalto, 5 - 90144 Palermo

C.F. e P.IVA  05940050825
Fax : +39-091-8772072
assistenza: (+39) 091-8776432
web: http://www.level7.it



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