Its more, the things that people break due to turning it on vs doing a better method. Just my two cents.
Dennis Burgess, Mikrotik Certified Trainer MTCNA, MTCRE, MTCWE, MTCTCE, MTCINE, MTCSE, HE IPv6 Sage, Cambium ePMP Certified Author of "Learn RouterOS- Second Edition” Link Technologies, Inc -- Mikrotik & WISP Support Services Office: 314-735-0270 Website: http://www.linktechs.net Create Wireless Coverage’s with www.towercoverage.com -----Original Message----- From: AF <af-boun...@af.afmug.com> On Behalf Of Ken Hohhof Sent: Thursday, January 2, 2020 4:57 PM To: 'AnimalFarm Microwave Users Group' <af@af.afmug.com> Subject: Re: [AFMUG] PPPoE and /32's The only reason I can think of, is that you have to be careful if you assign an IP address like 192.168.88.1 or 169.254.1.x to an interface for maybe administrative purposes, if that interface ever becomes active, and you don't have a route filter, then the router will advertise that block via OSPF. Can you be more specific why it is bad bad bad? I have actually been known to redistribute static routes (usually with a filter). I'm guessing you would characterize that as 4 or 5 bads? Usually this is to route a small block to a microPOP or customer router that I don't want to be an OSPF peer. In some cases the customer router is connected via PPPoE. I made the mistake once of trying to mix PPPoE and OSPF on an interface. That was indeed very bad. Oh, and I hope you realize some people like doing bad things, dangerous things, forbidden things. Like if a girl wants a guy to ask her out, she will get a friend to tell him she's off limits, which will make her irresistible. But then: https://tvtropes.org/pmwiki/pmwiki.php/Main/MySisterIsOffLimits -----Original Message----- From: AF <af-boun...@af.afmug.com> On Behalf Of Dennis Burgess via AF Sent: Thursday, January 2, 2020 3:16 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Cc: Dennis Burgess <dmburg...@linktechs.net> Subject: Re: [AFMUG] PPPoE and /32's NEVER redistribute connected... bad bad bad . The sub area you can announce out the /25 or whatever it is, but keep /32s from leaving the stub area. Your OSPF-out filters do not work inner area, i.e. between backbone and backbone routers, only intra-area, that means area 44 (stub) it will filter out the /32s.. Dennis Burgess, Mikrotik Certified Trainer MTCNA, MTCRE, MTCWE, MTCTCE, MTCINE, MTCSE, HE IPv6 Sage, Cambium ePMP Certified Author of "Learn RouterOS- Second Edition” Link Technologies, Inc -- Mikrotik & WISP Support Services Office: 314-735-0270 Website: http://www.linktechs.net Create Wireless Coverage’s with www.towercoverage.com -----Original Message----- From: AF <af-boun...@af.afmug.com> On Behalf Of Adam Moffett Sent: Thursday, January 2, 2020 12:10 PM To: af@af.afmug.com Subject: [AFMUG] PPPoE and /32's If you redistribute connected routes on a PPPoE server you get a route for every /32 and that's undesirable. My solution currently is to NOT redistribute connected and instead just advertise the larger network which will encompass all the /32's. I read a presentation suggesting to use an OSPF stub area for the PPPoE concentrator. Is there a reason I'd want to use a stub area instead of specifying the network to distribute? -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
