jwittkopf
asked on
Changing Subnet Mask
Okay here was my first post
https://www.experts-exchange.com/questions/21703081/Running-out-of-address-for-my-Class-C-subnet.html
Right now we have a subnet of 255.255.255.0. That includes all of or hardware and DHCP. I was going to go the route that they said and change the subnet to 255.255.254.0 so I can have 192.168.0.1-192.168.1.254.
I have a few Cisco Catalyst 3500 series and I'm that used to setting these up. I was just wondering what the command was when I telnet into the switch to change there subnet mask.
Also I have a Cisco PIX 506 that I was wondering if I would have to configure this for the new subnet. I did not originaly set up the firewall and I have never messed around with it. Honestly I'm more comfortable messing around with the switch then the firewall.
And if this whole situation is bonkers then give me a clue on what I should do.
One other thing is that we currently do not use any VLANs or routers in our network. It is made up with all switches.
https://www.experts-exchange.com/questions/21703081/Running-out-of-address-for-my-Class-C-subnet.html
Right now we have a subnet of 255.255.255.0. That includes all of or hardware and DHCP. I was going to go the route that they said and change the subnet to 255.255.254.0 so I can have 192.168.0.1-192.168.1.254.
I have a few Cisco Catalyst 3500 series and I'm that used to setting these up. I was just wondering what the command was when I telnet into the switch to change there subnet mask.
Also I have a Cisco PIX 506 that I was wondering if I would have to configure this for the new subnet. I did not originaly set up the firewall and I have never messed around with it. Honestly I'm more comfortable messing around with the switch then the firewall.
And if this whole situation is bonkers then give me a clue on what I should do.
One other thing is that we currently do not use any VLANs or routers in our network. It is made up with all switches.
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Not sure where you are. I am on UK time and will be online most of Saturday so if necessary, just post and we can respond. No, this does not 'make' them layer 3; the IP address is just for the management. they MAY be layer 3 anyway of course :)
Cheers
keith
Cheers
keith
ASKER
I'm in the Midwest of USA...Central time. But I won't be doing this until the 27 unless the Boss wants it done on the 20th.
Thanks,
Jeff
Thanks,
Jeff
@jwittkopf, try this:
Switch>ena
Switch#show run
This will give you your current config. So look it through and paste here part of config with your current IP address. It will help to determine where this ip configured.
Switch>ena
Switch#show run
This will give you your current config. So look it through and paste here part of config with your current IP address. It will help to determine where this ip configured.
ASKER
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface VLAN1
ip address 192.168.1.200 255.255.255.0
no ip directed-broadcast
no ip route-cache
!
ip default-gateway 192.168.1.3
snmp-server engineID local 0000000902000006D736C740
snmp-server community private RW
snmp-server community public RO
!
line con 0
exec-timeout 0 0
transport input none
stopbits 1
It looks like all of the ports are just default..if you need more of this config sheet I will post more of it
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface VLAN1
ip address 192.168.1.200 255.255.255.0
no ip directed-broadcast
no ip route-cache
!
ip default-gateway 192.168.1.3
snmp-server engineID local 0000000902000006D736C740
snmp-server community private RW
snmp-server community public RO
!
line con 0
exec-timeout 0 0
transport input none
stopbits 1
It looks like all of the ports are just default..if you need more of this config sheet I will post more of it
Just standard config as you say
# conf t
# int vlan1
# ip address 192.168.1.200 255.255.254.0
# exit
# wr m
# conf t
# int vlan1
# ip address 192.168.1.200 255.255.254.0
# exit
# wr m
@jwittkopf, you are using VLAN1, so just use my config for VLAN. :)
ASKER
Sorry been very busy to respond to this. I'm still having issues on changing my subnet but i think I finally got to the bottom of it. We have an AS/400 and that thing doesn't really like it when it has to change subnet masks. I think this weekend I will finally be able to get everything going. I'm going to split the points between the two of you. Thanks for all the help this should go fairly well this weekend.
Jeff
Jeff
ASKER
I know our switches are manageable by means of IP address. I don't know if this makes them layer 3 then or what. As far as them set up as port or VLANs I don't really know for sure. More than likely they just set an ip address to them and kept everything else as default on the switches.
To Keith
I relize that I'm going to need to change the mask on every static address that we have. Thanks for the firewall command as I don't know hardly anything about a PIX.
I'm just hoping this is going to go smooth for me. I will be doing this project next saturday so I'm trying to get the most info on it as I can.