if we advertise default-route to all ospf domain, we should confiigure 'ospf default-information originate' in ospf process.
but some ios, or version, We can do as following to advertise ospf default-route.
ip route 0.0.0.0 0.0.0.0 x.x.x.x(next-hop)
router ospf 1
redistribute static subnet
we can see default-route in RIB on another ospf router.
but some ios, even if we configure above, we can't see the default-route 0.0.0.0 on RIB on another same ospf domain
in this case, we should configure ' default-information originate' on ospf router.
What is the difference of redi static subnet(default-route 0.0.0.0) and default-information originate.
Can I advertise default-route to another ospf process using with 'ospf
default-information' in spite of configuring redi static subnet?
The default routes created using the ip route 0.0.0.0 0.0.0.0 command are not propagated by OSPF and IS-IS. Additionally, this default cannot be redistributed into OSPF or IS-IS using the redistribute command. Use the default-information originate command to generate a default route into an IS-IS or OSPF routing domain.
Device A has default-route and redis sub net on ospf 1. as following :
Device_A(x.x.x.141) router ospf 1 log-adjacency-changes redistribute static subnets ( there is no default-information originate ) ! ! ip route 0.0.0.0 0.0.0.0 x.x.x.x
but device B received default-route from device A. Device_B LUS_Device#show ip route 0.0.0.0 Routing entry for 0.0.0.0/0, supernet Known via "ospf 1", distance 110, metric 1, candidate default path Tag 1, type extern 2, forward metric 2 Last update from x.x.x.44 on FastEthernet1/0/48, 2w1d ago Routing Descriptor Blocks: * x.x.x.141, from x.x.x.44, 2w1d ago, via FastEthernet1/0/48 Route metric is 1, traffic share count is 1 Route tag 1
both device IOS ver. * 1 52 WS-C3750-48TS 12.2(35)SE5 C3750-IPSERVICESK9-M
When you redistribut static routes in OSPF, it checkes the static route installed in routing table and picks up all installed static routes and redistribute them in OSPF doesnt matter if it was a default route configured statically ok so whats the difference between resdistibuting static routes and default information originate command
for example if there were more static routes configured and you just wanted to have default advertised, you have to use route-map to filter out other routes than default, while if you use default information originate it only looks for any default route installed in routing table or not, if its there than it will advertize the default route... simply
When you redistribut static routes in OSPF, it checkes the static route
installed in routing table and picks up all installed static routes and
redistribute them in OSPF doesnt matter if it was a default route
Incorrect. It will bring all static routes into OSPF with the exception of the default route.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...