Hi again,
I've been trying to work this out with ospf and I am doing some tests with spare switches we have but so far the results are not the expected. I cannot ping ip addresses on the 2 switches sharing the same subnets, the main switch does not seem to know the route. Below, I am copying the ospf settings on the 3 switches hoping you will see anything wrong and help me. The main and the second switch they communicate fine already.
main switch:
router ospf
area 10.8.0.0 range 10.8.0.0 255.255.0.0 type summary
area 10.10.0.0 range 10.10.0.0 255.255.0.0 type summary
area 10.12.0.0 range 10.12.0.0 255.255.0.0 type summary
area 10.14.0.0 range 10.14.0.0 255.255.0.0 type summary
area 10.16.0.0 range 10.16.0.0 255.255.0.0 type summary
area 10.18.0.0 range 10.18.0.0 255.255.0.0 type summary
area 172.20.0.0
area 172.20.12.0 range 172.20.12.0 255.255.255.0 type summary
area 172.20.14.0 range 172.20.14.0 255.255.255.0 type summary
area 172.20.16.0 range 172.20.16.0 255.255.255.0 type summary
area 172.20.18.0 range 172.20.18.0 255.255.255.128 type summary
area 172.20.20.0 range 172.20.20.0 255.255.255.0 type summary
area 172.20.21.0
area 192.168.1.0
area backbone
redistribute connected
redistribute static
exit
router pim
rp-address 192.168.255.254 224.0.0.0 240.0.0.0
rp-candidate
rp-candidate source-ip-vlan 901
rp-candidate group-prefix 224.0.0.0 240.0.0.0
rp-candidate hold-time 150 priority 200
exit
interface loopback 1
ip address 192.168.255.254
ip ospf 192.168.255.254 area backbone
exit
vlan 80
ip ospf 10.8.10.1 area 10.8.0.0
ip pim-sparse
ip-addr any
exit
exit
vlan 81
ip pim-sparse
ip-addr any
exit
exit
vlan 90
ip pim-sparse
ip-addr any
exit
exit ........
several vlans
.....
vlan 901
ip ospf 192.168.255.1 area backbone
ip pim-sparse
ip-addr any
exit
exit
vlan 902
ip ospf 192.168.255.5 area backbone
ip pim-sparse
ip-addr any
exit
exit
vlan 903
ip ospf 192.168.255.9 area backbone
ip pim-sparse
ip-addr any
exit
exit
vlan 904
ip ospf 192.168.255.13 area backbone
ip pim-sparse
ip-addr any
exit
exit
vlan 905
ip ospf 192.168.255.17 area backbone
ip ospf 192.168.255.17 priority 100
ip pim-sparse
ip-addr any
exit
exit
vlan 906
ip ospf 192.168.255.21 area backbone
ip ospf 192.168.255.21 priority 100
ip pim-sparse
ip-addr any
exit
exit
vlan 907
ip ospf 192.168.255.25 area backbone
ip ospf 192.168.255.25 priority 100
ip pim-sparse
ip-addr any
exit
exit
vlan 908
ip ospf 192.168.255.29 area backbone
ip ospf 192.168.255.29 priority 100
ip pim-sparse
ip-addr any
exit
exit
second switch:
router ospf
area 172.20.32.0
area backbone
redistribute connected
exit
router pim
exit
vlan 905
ip ospf area backbone
exit
vlan 906
ip ospf area backbone
exit
new switch:
router ospf
area 172.20.33.0
area 172.22.18.0
area backbone
redistribute connected
exit
interface loopback 1
ip address 192.168.255.252
ip ospf 192.168.255.252 area backbone
exit
vlan 902
ip ospf 192.168.255.6 area backbone
exit
vlan 903
ip ospf 192.168.255.10 area backbone
exit