enabling CEF changing connected routes to static route

Unanswered Question

I have 3800 router which has ospf for LAN and static. we are redistributing static routes into ospf. when enabling local gig interface which was showing connected become static route. we routing local subnet also to serial interfaces. but local interface should be showing connected. Please provide me a solution on this.

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 3 (1 ratings)
Harold Ritter Mon, 09/29/2008 - 17:35


Could you please provide the output of a "show ip route x.x.x.x" for the specific route and "show int xx" for the specific int.


Router2#sh ip route

Routing entry for

Known via "static", distance 1, metric 0

Redistributing via ospf 1

Advertised by ospf 1 subnets

Routing Descriptor Blocks:


Route metric is 0, traffic share count is 1

We have route to

statis routes redistributed into ospf. It usually shows connected when no ip cef. When CEF enabled showing static.

ariesc_33 Tue, 09/30/2008 - 00:25

i think has something to do with the way that CEF maintains the FIB database, cant explain further though.

on the neighbor routers with CEF enabled,do you see the same route as ospf route?

Harold Ritter Tue, 09/30/2008 - 05:01


Can you provide the exact configuration of the static route and the version of IOS you use.


interface GigabitEthernet0/0

ip address

no ip redirects

no ip proxy-arp

ip nat inside

ip virtual-reassembly

no ip mroute-cache

ip ospf authentication message-digest

ip ospf authentication-key

duplex auto

speed auto

media-type rj45

no cdp enable

router ospf 1



redistribute static subnets

passive-interface default

no passive-interface GigabitEthernet0/0

no passive-interface GigabitEthernet0/1

ip route (customer FW)

ip route

IOS version : c3845-advsecurityk9-mz.124-15.XY1.bin

OSPF used in LAN environment for redundancy.


This Discussion