01-02-2009 05:37 AM - edited 03-04-2019 03:18 AM
I just moved and had T1 with Fast Ethernet connection previously and now have a cable modem connection with Cox Business Services. I thought I could just change my IP and Subnet in the outside interface and be up and running, but that is not the case.
This is mission critical and system is down. Any help would be appreciated!
Thanks,
Jerry
Solved! Go to Solution.
01-02-2009 06:25 AM
whats the cable servie provide.
Do u get a dhcp ip address ?
Public Privde ?
ISP information and configuraiton on the router if provided would be easy to provide solution
01-02-2009 06:25 AM
whats the cable servie provide.
Do u get a dhcp ip address ?
Public Privde ?
ISP information and configuraiton on the router if provided would be easy to provide solution
01-02-2009 06:53 AM
I have static 5 static IP's assigned. My interfaces are setup as follows:
Interfact Fast Ethernet0/0
description $ETH-SW-LAUNCH$$INTF-INFO-FE 0.0 $$ES_LAN$$FW_INSIDE$
ip address 192.168.1.2 255.255.255.0
ip access-group 100 in
no ip redirects
no ip unreachables
ip nat inside
ip virtual-reassembly
ip route-cache flow
ip tcp adjust-mss 1400
duplex full
speed 100
no mop enabled
Interface FastEthernet0/1
description $ES_WAN$$FW_OUTSIDE$$ETH-WAN$
ip address 24.249.183.197 255.255.255.192
ip access-group 104 in
no ip redirects
no ip unreachables
ip inspect SDM_LOW out
ip nat outside
ip virtual-reassembly
ip route-cache flow
duplex auto
speed auto
no mop enabled
crypto map SDM_CMAP_1
I have also change the dns ip's in this config as well. The ACL's are the same as before with exception to IP changes. I can not ping out from the router. No connection at all. Connecting a laptop directly to the cable modem with the static IP's etc. works fine.
Thanks for any help.
Jerry
01-02-2009 06:58 AM
Even though nothing has changed, I would do the following to test:
Remove the ACL
Remove the ip inspects
Did you change your gateway? There's a line in your config that should say:
ip route 0.0.0.0 0.0.0.0
That needs to be changed as well.
If a laptop works, it may just be your route statement that you need to change.
HTH,
John
*please rate if helpful*
01-02-2009 06:39 AM
If they gave you a cable modem, you should be able to put in the address that they gave you, but if it's a router, you'll need to have your router in bridging mode before it will pass any routing information to your router. After the router is in bridging, you'll be able to put in your address on your router and you'll be fine.
HTH,
John
01-02-2009 07:17 AM
John,
Thanks for your help. All it was, was the gateway. I had forgotten to change it.
Thanks,
Jerry
01-02-2009 07:23 AM
That's great news Jerry! Glad to help :-)
John
*please rate; it helps the board*
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