i was having issue with ip default-network while advertising the default routes. I raised a ticket in the cisco forums and here is the reply. The candidate default was not getting tagged/flagged.
Hi All,
Routes with * i.e. Default route is stil not appearing. I think there is a config mistake...but could not find where
router eigrp 100
network 1.0.0.0
network 10.1.0.0 0.0.255.255
network 172.16.0.0
network 192.168.12.0
network 192.168.13.0
no auto-summary
!
ip http server
!
ip route 1.0.0.0 255.0.0.0 1.1.1.0 ----->ip default-network 1.1.1.0
ip route 1.1.1.0 255.255.255.0 Null0
output::
C 192.168.12.0/24 is directly connected, Serial1/0
1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
S 1.1.1.0/24 is directly connected, Null0
S 1.0.0.0/8 [1/0] via 1.1.1.0
C 192.168.13.0/24 is directly connected, Serial1/1
D 192.168.24.0/24 [90/2172416] via 192.168.12.2, 00:25:44, Serial1/0
172.16.0.0/24 is subnetted, 3 subnets
C 172.16.9.0 is directly connected, Loopback9
C 172.16.10.0 is directly connected, Loopback10
C 172.16.11.0 is directly connected, Loopback11
10.0.0.0/24 is subnetted, 8 subnets
C 10.1.8.0 is directly connected, Loopback8
C 10.1.3.0 is directly connected, Loopback3
C 10.1.2.0 is directly connected, Loopback2
C 10.1.1.0 is directly connected, Loopback1
C 10.1.7.0 is directly connected, Loopback7
C 10.1.6.0 is directly connected, Loopback6
C 10.1.5.0 is directly connected, Loopback5
C 10.1.4.0 is directly connected, Loopback4
D 192.168.34.0/24 [90/2681856] via 192.168.13.2, 00:25:45, Serial1/1
D 192.168.0.0/24 [90/2297856] via 192.168.12.2, 00:25:45, Serial1/0
Any reason why its not cadidate default route.
Any assistance will be appreciated.
Cheers!
Ravi
Already replied in another thread, please avoid opening duplicates.
Hi Paolo,
Please provide me the thread URL. This is not a duplicate thread.
I am working on this issue and its really taking its toll. Your assistance will be highly appreciated.
Chrees!
Ravi
I think he is referring to the following: (search results from the support community)
Ravi
Assuming that your config has this command to specify the default network "ip default-network 1.1.1.0" then the biggest problem is that you have violated one of the basic requirements of default network. The default network should be a classful network (class A or B or C) and not a subnet that is known somewhere is the network. But you have given a subnet value.
I believe that there is also an issue in the way that EIGRP processes your intended default network. The purpose of having a default network/gateway of last resort is to advertise to other EIGRP neighbors that they should forward to you their traffic for unknown destinations because you can forward it. But your router learns the route as a discard route to null 0.
There are better ways to get EIGRP to advertise a default route. You could use the EIGRP summary address command on interfaces to have EIGRP advertise a default route out those interfaces. Or you could configure a static default route and redistribute the static into EIGRP.
HTH
Rick
And in all it got resolved
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