How to clear entry in eigrp table without clearing the

From: BALAKRISHNAN Balaji (Balaji.BALAKRISHNAN@swift.com)
Date: Tue Jul 26 2005 - 15:40:00 GMT-3

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Hi Group,

I think , I got into an Eigrp bug that I could not get it fixed. I was
putting an external Eigrp summarizing statement on a vlan interface and
mistakenly I used wild card mask instead of the normal mask. This caused
a default route pointing to null0 to get installed on the routing
table and got propagated to the rest of the network via Eigrp. Once I
saw this, I removed those summary entries and reconfigured them with the
normal mask but the default route did not clear from the routing table.I
can see the route also on the topology table with "0" successor. Can
any one suggest the way to clear it without having to reboot the router
or clearing the eigrp process.
Router is CAT5000 running RSM and IOS version is 11.2.17

USF # conf t
USF(conf)#int vlan28
USF(config-if)#ip summary-address eigrp 12 143.152.0.0 0.0.255.255
USF(config-if)#ip summary-address eigrp 12 172.16.0.0 0.0.255.255
USF(config-if)# ip summary-address eigrp 12 172.26.0.0 0.0.255.255

USF# sh run int vlan28
interface Vlan28
 ip address 10.23.192.82 255.255.255.252
 no ip redirects
 no ip unreachables
 no ip directed-broadcast
 no ip proxy-arp
 ip summary-address eigrp 12 0.0.0.0 0.0.255.255

USF# sh ip route | in Null0
D* 0.0.0.0/0 is a summary, 3d02h, Null0

USF # conf t
USF( config)#interface Vlan28
USF(config-if)#no ip summary-address eigrp 12 0.0.0.0 0.0.255.255
USF(config-if)#ip summary-address eigrp 12 143.152.0.0 255.255.0.0
USF(config-if)#ip summary-address eigrp 12 172.16.0.0 255.255.0.0
USF(config-if)#ip summary-address eigrp 12 172.26.0.0 255.255.0.0

USF# sh ip route | in Null0
D* 0.0.0.0/0 is a summary, 2d23h, Null0
--------------->> Still present
D 172.16.0.0/16 is a summary, 2d23h, Null0
D 143.152.0.0/16 is a summary, 2d23h, Null0
D 172.26.0.0/16 is a summary, 2d23h, Null0

USF#sh ip route 0.0.0.0
Routing entry for 0.0.0.0/0, supernet
  Known via "eigrp 12", distance 5, metric 33280, candidate default
path, type internal
  Redistributing via eigrp 12, rip
  Routing Descriptor Blocks:
  * directly connected, via Null0

USF#sh ip eigrp topology 0.0.0.0
IP-EIGRP topology entry for 0.0.0.0/0
  State is Passive, Query origin flag is 1, 0 Successor(s), FD is
4294967295

I appreciate any help.

- Bala.

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