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Home > Archive > CCNA > April 2004 > vlsm and ospf
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| Kentucky 2004-04-28, 3:09 am |
| I know i have asked this question before but this time it's a little bit interesting.
this is the configuration i got from a cisco ospf pdf for vlsm and ospf.
Router 1#
interface ethernet 0
ip address 203.250.15.67 255.255.255.192
interface serial 1
ip address 203.250.15.1 255.255.255.192
router ospf 10
network 203.250.15.64 0.0.0.63 area 0
network 203.250.15.0 0.0.0.63 area 1
the first network statement starts from the first addressable host on the ethernet subnet.
the second network statement start with the network address of the subnet.
shouldn't the first network statement start at 63 ie network 203.250.15.63 0.0.0.63 area 0 since that's the network address for the subnet like the second network statement for interface serial 1 ? | |
| perfectionist 2004-04-28, 3:27 am |
| The answer given is correct because the ip address of 203.250.15.67/26, which is assigned to interface ethernet 0, belongs to subnet 203.250.15.64/26 whereas the ip address of 203.250.15.1/26, which is assigned to interface serial 0, belongs to subnet 203.250.15.0/26 . | |
| perfectionist 2004-04-28, 3:36 am |
| For your information, 203.250.15.0/26 and 203.250.15.64/26 are both subnet address. | |
| Kentucky 2004-04-28, 3:43 am |
| i miscalculated my subnets.
thnaks perfectionists. | |
| perfectionist 2004-04-28, 4:06 am |
| You r welcome.. |
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