troubleshooting Question

HELP ! VLSM Subneting

Avatar of texwebnet
texwebnet asked on
Routers
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:

206.xxx.xxx.0/25
206.xxx.xxx.128/25
206.xxx.xxx.128/26
206.xxx.xxx.192/26

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 204.117.214.10
ip name-server 199.2.252.10
ip name-server 204.97.212.10
!
interface Loopback0
 no ip address
 no ip directed-broadcast
!
interface FastEthernet0/0
 ip address 206.xxx.xxx.1 255.255.255.0
 no ip directed-broadcast
 speed 100
 full-duplex
!
interface Serial0/0
 description Sprint T1 PL 372813
 bandwidth 1536
 ip address 160.81.235.246 255.255.255.252
 no ip redirects
 no ip directed-broadcast
 shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0/0
no ip http server
!
line con 0
 exec-timeout 0 0
 password 7 140317061C305A2A373B
 login
 transport input none
line aux 0
line vty 0 4
 password 7 021201651B521F205F5D
 login
!
no scheduler allocate
end

Router#


 
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