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Cisco 2600 Sample Subnet Configuration?

Posted on 2012-09-06
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Last Modified: 2012-09-07
Hi:
I have a /25 block of ips which I'd like to subnet into two /26 blocks. I have a Cisco 2600 with 2 fastethernet ports in it. Can anyone provide me with the commands I'd need to take my 200.180.200.0 255.255.255.128, gateway 200.180.200.1 and turn it into 200.180.200.0 255.255.255.192, gateway 200.180.200.1 and 200.180.200.64 255.255.255.192, gateway 200.180.200.65?
Thanks in advance!
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Question by:Mr_Blob
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by:qbakies
ID: 38373866
CLI commands:

conf t
int f0/0
ip address 200.180.200.1 255.255.255.192
no shut
int f0/1
ip address 200.180.200.65 255.255.255.192
no shut
end
wr mem

Not sure what you mean by the 'gateway' addresses.  Those addresses you listed as the 'gateway' are the first usable IP address in the subnet so I assigned them to the interface.  This means you can use those IPs as the default gateway for other devices on that subnet.
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Author Comment

by:Mr_Blob
ID: 38373920
Thanks for the quick reply!
I should have been more clear - this is our internet connection so one of the interfaces will be connected to the ISP & the other to a switch. Can I get the subnetting to happen in a similar fashion, like so?

conf t
int f0/0
no ip address
no shut
int f0/1
ip address 200.180.200.1 255.255.255.192
ip address 200.180.200.65 255.255.255.192 secondary
no shut
ip route 0.0.0.0 0.0.0.0 f0/0
end
wr mem

But I think 200.180.200.1 (our ISPs gateway) is already in use...
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qbakies earned 1500 total points
ID: 38374658
I'm not sure what you are trying to accomplish here.  I need to know what you are trying to do to help.

So you have a /25 block of public IPs assigned to use by your ISP?
Are you trying to use those public IPs in your LAN?

In the config you wrote above you have the default route going out f0/0 but f0/0 isn't configured so that won't do anything.
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