Dear Randy, Thanks for your help, but 172.16/16 belong to that region and for example 172.17/16 belong to another one and I want to ospf bring me the whole subnet not which I used. And summary-address does not to this for me. Thanks On Sun, Jul 21, 2013 at 1:21 AM, Randy <randy_94108@yahoo.com> wrote:
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 <sh.vahabzadeh@gmail.com> To: Jon Lewis <jlewis@lewis.org> Cc: nanog <nanog@nanog.org> 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 <jlewis@lewis.org> 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
-- 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