what you are seeing is the expected behavior. you are asking the router to generate a type 3 summary for a type 1 lsa that doesn't exist for area 10 via the "area 10 range' command" (also, that is why it works when you add a /32 to loopback)
172.16/16 is an external route. If you want to generate a type 5 aggregate use summary-addr as Jon has pointed out. Else, leave static in place, redist static subnets but remove "area 10 range 172.16.0.0 255.255.0.0" from ospf config. ./Randy _______________________________ > From: Shahab Vahabzadeh <[email protected]> >To: Jon Lewis <[email protected]> >Cc: nanog <[email protected]> >Sent: Saturday, July 20, 2013 12:55 PM >Subject: Re: OSPF and Forcing a Subnet > > >Dear Jon I have a mistake in my last email, there is a static route like >this: > >ip route 172.16.0.0 255.255.0.0 10.20.76.12 > >but again it is redistributing > > >On Sun, Jul 21, 2013 at 12:22 AM, Jon Lewis <[email protected]> wrote: > >> You don't have a route for 172.16/16 in the config below, so ospf will not >> advertise it. You do have a route for a subnet of 172.16/16, so either use >> summary-address 172.16.0.0 255.255.0.0 or nail up a static route for >> 172.16.0.0 255.255.0.0 to null0 and redistribute static subnets, and then >> ospf can redistribute that static route. >> >> >> On Sun, 21 Jul 2013, Shahab Vahabzadeh wrote: >> >> Dear Friends, >>> I have an OSPF over GRE configuration sending you below in which I have >>> problem. >>> I want to force OSPF to advertise 172.16/16 range without checking >>> anything. >>> And as you see I have an static route for it in routing table but again >>> OSPF do not advertise it, only it advertise when I put one /32 subnet on >>> loopback interface. >>> even I put "redistribute static subnets" command with/without route-map >>> but >>> again do not work. >>> I think because of having my providers address range in my static routes, >>> routers and ospf confused when wanna advertise routers. >>> >>> >>> interface Tunnel0 >>> >>>> ip address 128.140.40.2 255.255.255.252 >>>> tunnel source 10.20.76.2 >>>> tunnel destination 10.20.75.2 >>>> interface GigabitEthernet0/0 >>>> description UPSTREAM - INTRANET >>>> ip address 10.20.76.2 255.255.255.248 >>>> interface GigabitEthernet0/1 >>>> description CONNECTED ROUTER >>>> ip address 10.20.76.9 255.255.255.248 >>>> >>>> router ospf 10 >>>> log-adjacency-changes >>>> area 10 range 172.16.0.0 255.255.0.0 >>>> passive-interface default >>>> no passive-interface Tunnel0 >>>> network 172.16.0.0 0.0.255.255 area 10 >>>> network 128.140.40.0 0.0.0.3 area 0 >>>> ip route 0.0.0.0 0.0.0.0 10.20.76.1 >>>> ip route 172.16.0.0 255.255.224.0 10.20.76.12 >>>> ip route 10.20.76.0 255.255.255.0 10.20.76.12 >>>> ip route 10.20.77.0 255.255.255.0 10.20.76.12 >>>> >>> >>> >>> >>> Thanks >>> >>> -- >>> Regards, >>> Shahab Vahabzadeh, Network Engineer and System Administrator >>> >>> Cell Phone: +1 (415) 871 0742 >>> PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367 BF90 >>> >>> >> ------------------------------**------------------------------**---------- >> Jon Lewis, MCP :) | I route >> | therefore you are >> _________ >> http://www.lewis.org/~jlewis/**pgp<http://www.lewis.org/~jlewis/pgp>for PGP >> public key_________ >> > > > >-- >Regards, >Shahab Vahabzadeh, Network Engineer and System Administrator > >Cell Phone: +1 (415) 871 0742 >PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367 BF90 > > >
