[c-nsp] splitting a subnet into two locations

[Rudy Setiawan]

Hi David,

I tried to use LAM but only a few hosts are visible but not the rest.

There are two 6509s both of them are directly connected with OSPF area 0

6509A:
router mobile
!
router ospf 1
 log-adjacency-changes
area 0 range x.x.x.0 255.255.255.0 
redistribute mobile metric 50 subnets
!
interface VLAN420
! this one has 10.2.4.2 - 10.2.6.254 netmask 255.255.252.0
! and 192.168.0.0/24
! and 10.2.2.0/24
 no ip address
 ip mobile arp
end
!
interface g2/3
 ip address x.x.x.138 255.255.255.248
!

6509B:
router mobile
!
router ospf 1
 log-adjacency-changes
 area 0 range x.x.x.0 255.255.255.0
 redistribute mobile metric 50 subnets

interface VLAN420
! this interface has 10.2.7.1 - 10.2.7.254 netmask 255.255.252.0 attach 
to it.
 no ip address
 ip mobile arp
end

int g1/2
 ip address x.x.x.137 255.255.255.248
!

When I am on 6509A, I did a show ip route mobile:
     10.0.0.0/8 is variably subnetted, 45 subnets, 2 masks
M       10.2.2.10/32 [3/1] via 10.2.2.10, 00:25:23, Vlan420
M       10.2.2.8/32 [3/1] via 10.2.2.8, 00:25:23, Vlan420
M       10.2.2.9/32 [3/1] via 10.2.2.9, 00:25:23, Vlan420
M       10.2.2.14/32 [3/1] via 10.2.2.14, 00:25:23, Vlan420
M       10.2.2.15/32 [3/1] via 10.2.2.15, 00:25:23, Vlan420
M       10.2.2.12/32 [3/1] via 10.2.2.12, 00:25:23, Vlan420
M       10.2.2.13/32 [3/1] via 10.2.2.13, 00:25:23, Vlan420
M       10.2.2.2/32 [3/1] via 10.2.2.2, 00:25:23, Vlan420
M       10.2.2.3/32 [3/1] via 10.2.2.3, 00:25:23, Vlan420
M       10.2.2.6/32 [3/1] via 10.2.2.6, 00:25:23, Vlan420
M       10.2.2.7/32 [3/1] via 10.2.2.7, 00:25:23, Vlan420
M       10.2.2.4/32 [3/1] via 10.2.2.4, 00:25:23, Vlan420
M       10.2.2.5/32 [3/1] via 10.2.2.5, 00:25:23, Vlan420
M       10.2.2.16/32 [3/1] via 10.2.2.16, 00:25:23, Vlan420


then on 6509B, I did a show ip route mobile:
it shows nothing.
then I did a show ip route ospf:
O E2    10.2.2.10 [110/50] via x.x.x.138, 00:18:08, GigabitEthernet1/2
O E2    10.2.2.8 [110/50] via x.x.x.138, 00:18:08, GigabitEthernet1/2
O E2    10.2.2.9 [110/50] via x.x.x.138, 00:18:08, GigabitEthernet1/2
O E2    10.2.2.14 [110/50] via x.x.x.138, 00:18:08, GigabitEthernet1/2
O E2    10.2.2.15 [110/50] via x.x.x.138, 00:18:08, GigabitEthernet1/2
O E2    10.2.2.12 [110/50] via x.x.x.138, 00:18:08, GigabitEthernet1/2
O E2    10.2.2.13 [110/50] via x.x.x.138, 00:18:08, GigabitEthernet1/2

Apparently 6509A advertises the 10.2.2.0/24 and 192.168.0/24 but not 
10.2.4.0/22 ?

Can you help out? Thank you so much.

Regards,
Rudy



David Prall wrote:
> Could also do proxy-arp along with LAM so that you don't need to manually
> put in the /32's.
>
> David
>
> --
> http://dcp.dcptech.com
>
>