Pinging from Switch and PC

[stealthmig]

Good Evening All,

I'm currently setting my equipment to connect to the Internet through my Xfinity cable modem. My home network is on the 10.0.0.1/24. I have attached my Cisco1841 router to a Cisco 8 port unmanaged switch that is connected to my cable modem. I can ping the Google DNS server from my router and receive replies. When I attempt pinging from my Cisco 3560 or my computer the pings don't seem to pass the modem. I used traceroute and  it doesn't pas the modem either. I'm wondering if there is a configuration that I didn't setup. I have added default gateways, static route, and default route. I'm not sure what else to try. I must have missed something on my configuration. Included are my current config and network diagram. I've removed all entries for the default-gateway, static route and default route since I had no luck with them.

Thanks in advance,

Luis

[luis_cordova · Accepted solution]

Hello,

Try to do a NAT PAT in 1841

1841(config)# access-list 1 permit 192.168.1.0 0.0.0.255

1841(config)#ip nat inside source list 1 interface f0/1 overload

1841(config)#interface f0/0

1841(config-if)#ip nat inside

1841(config)#interface f0/1

1841(config-if)#ip nat outside

Regards

[stealthmig]

Thank you, Luis that worked amazing but I have a new challenge figure out. So I'm off to work on that.

[johnd2310]

Hi,

You router can ping because the source is the 10.0.0 network which the cable  modem is aware of. The cable modem does not know where the 192.168.1 network is located. You need to add a static route on the cable modem for the 192.168.1 network pointing to the router. You also need to check that nat is enable on the cable modem for the 192.168.1 network.

Thanks

John