troubleshooting Question

HELP ! VLSM Subneting

Avatar of texwebnet
texwebnet asked on
12 Comments1 Solution1532 ViewsLast Modified:
First off, I'm not a techie, my father is, I'm a seventeen yr old kid.  He's in the hospital, so I'm trying to take care of this for him (he promised a customer it would be done over the memorial day weekend).  I had him explain it to me, but I just don't get it.  I so I thought I'd as for help here.  So here goes...

I've a Cisco 2620 router I'm trying to configure.  I've got it basically working (as best I can see), but its using an unsubneted class C IP address block.  I was told to subnet it into 3 subnets.  One with 126 hosts and two with 62 hosts.  This is what I'm having trouble understanding how to do.  

I've spent 3 days to get this far and still just can't get the subneting right.  The only thing I think I understand is that the subnet groups are:

But, I don't understand how to specify it in the configuration.  Below is the simple configuration I've got running on the routers (that I think I've got working correctly without subneting).  Any help in getting this configured correctly with the subnets would be very much appreciated.  

Thanks, Anthony.

show running
Building configuration...

Current configuration:
version 12.0
service timestamps debug uptime
service timestamps log uptime
service password-encryption
hostname Router
logging buffered 4096 notifications
no logging console
logging monitor notifications
enable secret 5 $1$GRax$/Qw5JbsPfaQnvloZsku4N0
enable password 7 08245943149D12160118
ip subnet-zero
ip name-server
ip name-server
ip name-server
interface Loopback0
 no ip address
 no ip directed-broadcast
interface FastEthernet0/0
 ip address
 no ip directed-broadcast
 speed 100
interface Serial0/0
 description Sprint T1 PL 372813
 bandwidth 1536
 ip address
 no ip redirects
 no ip directed-broadcast
ip classless
ip route Serial0/0
no ip http server
line con 0
 exec-timeout 0 0
 password 7 140317061C305A2A373B
 transport input none
line aux 0
line vty 0 4
 password 7 021201651B521F205F5D
no scheduler allocate



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