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How to configure a new subnet on a cisco switch

Hello -

I have 4 switched stacked WS-C2960S-48FPS-L and I am needing to setup a new IP address range for some new devices. This range will be a class C /24 (172.22.23.1-172.22.23.254). How would I go about doing that on the switches? We also have a wireless network, so I need to ensure this is working with that network as well. I truly appreciate all your help!

Thank you!

David Sankovsky

That depends on how your other networks are configured.
Is this going to be a separate VLAN with a defined VLAN ID?
Do you need the switch to have an address on this network?

If the answer to both questions "no" then you probably don't have to configure anything at all.. If you do have VLANs or you need the switch to hold an IP address from that range, that's a different story

sysnimda

ASKER

yes I need switch to hold IP address from that range

sysnimda

ASKER

separate VLANs

David Johnson, CD

You do realize that 172.22 is a public not private ip subnet ?

sysnimda

ASKER

Can it be used Mr. Johnson?

David Johnson, CD

actually I was wrong.. 172.16.xx - 172.31.255.255 xx is private address space
Ignore my previous comment

sysnimda

ASKER

No worries, thanks for checking.

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kevinhsieh

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sysnimda

ASKER

Nice, thank you! Now, I have a wireless VLAN already and I want this new VLAN to communicate with that VLAN, how do I set that up? THANKS!

kevinhsieh

What does your routing?

Do you know the difference between a L2 VLAN and an L3 IP subnet?

sysnimda

ASKER

L3 IP Subnet is used to route and a L2 VLAN is just to segment my LAN.

On my core router I have these routes.

172.22.0.0/16 is variably subnetted, 11 subnets, 2 masks
C 172.22.24.0/24 is directly connected, Vlan124
C 172.22.31.0/24 is directly connected, Vlan131
C 172.22.20.0/22 is directly connected, Vlan120
C 172.22.10.0/24 is directly connected, Vlan110
C 172.22.11.0/24 is directly connected, Vlan111
C 172.22.8.0/24 is directly connected, Vlan108
C 172.22.9.0/24 is directly connected, Vlan109
C 172.22.14.0/24 is directly connected, Vlan114
C 172.22.13.0/24 is directly connected, Vlan113
C 172.22.1.0/24 is directly connected, Vlan101
C 172.22.7.0/24 is directly connected, Vlan107
S* 0.0.0.0/0 [1/0] via 172.22.7.1

kevinhsieh

On the core switch you need to create the L2 and L3 interfaces. On the L3 interface set the IP address.
To get an idea of how the interfaces are configured in your network, look at the running configuration.