Basically what they are saying is if you redistribute connected routes you end up throwing a great number of routes into your OSPF table that really don't need to be there. tons of internal route stuff gets there, etc. For example if a router has the below routes on interfaaces the OSPF table looks identical if you redistribute connected, while if only static are listed only the noted route shows up.
69.39.54.1/24 <- if static, this is only route distributed via OSPF 10.0.10.0/24 216.34.34.48/27 69.39.28.32/24 10.10.0.25/24 216.34.0.33/32 A lot cleaner if you don't clutter it up and really pretty easy to figure out when it won't route what you want when you first bring it up. On Thu, May 21, 2015 at 8:45 AM, Stefan Englhardt <s...@genias.net> wrote: > Doing this you enable ospf on the interfaces with addresses within > x.x.x.x/x. > > This is not wanted on all edge networks/customer networks. > > > > *Von:* Af [mailto:af-boun...@afmug.com] *Im Auftrag von *Shayne Lebrun > *Gesendet:* Donnerstag, 21. Mai 2015 15:33 > > *An:* af@afmug.com > *Betreff:* Re: [AFMUG] mt ospf question > > > > You tell the router what routes to redistribute, rather than telling the > router to redistribute everything that’s there. > > > > There’s never a reason not to simply take the extra five seconds to type > ‘/routing ospf network add network=x.x.x.x/x area=whatever’. > > > > There’s a lot of very good reasons not to, however. > > > > > > *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On > Behalf Of *Stefan Englhardt > *Sent:* Thursday, May 21, 2015 8:16 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] mt ospf question > > > > Looked twice at this. How does your network know the route to a network > connected to one of your routers if he does not redistribute this > information into ospf? > > > > > > *Von:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *Im > Auftrag von *Dennis Burgess > *Gesendet:* Donnerstag, 21. Mai 2015 14:10 > *An:* af@afmug.com > *Betreff:* Re: [AFMUG] mt ospf question > > > > There are about 0 times when you should distribute connected, just a FYI. > 99% of the time it causes issues with unintended and/or unneeded > distribution of routes .. > > > > Dennis Burgess, CTO, Link Technologies, Inc. > > den...@linktechs.net – 314-735-0270 – www.linktechs.net > > > > *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On > Behalf Of *Gilbert Gutierrez > *Sent:* Wednesday, May 20, 2015 3:47 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] mt ospf question > > > > Are you redistributing Connected? If the /30 is not on the networks tab, > then you will need to redistribute connected routes. If you add static > routes pointing to places you will want to redistribute static routes as > well. > > Gilbert > > On 5/20/2015 1:03 PM, That One Guy /sarcasm wrote: > > So I have this here mikrotik Ive been implementing ospf on > > Right now because this is transition, all MT ports hit the same switch > > Eth6 is on a /30 that is going to a powercode BMU thats distributing the > default route, it works fine > > Eth2 is on a /30 that is going to a fortigate, it works fine > > > > the routes propagate as they should > > > > I initially tried to add another /30 to Eth2 for a second fortigate, but > it wouldnt let me add the netwok > > so I put that /30 on eth3 it comes up in a state designated router > > > > I moved it to eth4, same thing designated router the other two that are > working have said backup all along > > > > is there something about adding a third ospf interface to mikrotik i need > to know here? > > > > -- > > If you only see yourself as part of the team but you don't see your team > as part of yourself you have already failed as part of the team. > > >
