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ms

join:2013-08-02
Scarborough, ON

Rogers routing/dhcp problem

We got a strange problem with Rogers 25M cable customer with Motorola SB6120 modem.

With the computer connected directly to the modem, we are able to log in to the modem and check the status - that is before getting the DHCP address from Rogers. Computer still has 192.168.100.x address.

As soon as the computer gets the regular public IP address from Rogers, we are not able to access the modem. (Not able to ping the default gateway)

Any ping to yahoo or google sites would give "Destination host unreachable with Host computers IP address"

Route print looks good on the computer.

IP Address : 162.0.29.231
Subnet mask : 255.255.255.224
Default gateway : 162.0.29.225

C:\Users\admin>tracert 98.138.253.109

Tracing route to 98.138.253.109 over a maximum of 30 hops

1 admin-PC [162.0.29.231] reports: Destination host unreachable.

Trace complete.

Route Print (before getting the DHCP address from Rogers)

Network Destination Netmask Gateway Interface Metric
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.100.0 255.255.255.0 On-link 192.168.100.10 276
192.168.100.10 255.255.255.255 On-link 192.168.100.10 276
192.168.100.255 255.255.255.255 On-link 192.168.100.10 276
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.100.10 276
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.100.10 276

Route Print (after getting the DHCP address from Rogers)

Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 162.0.29.225 162.0.29.231 20
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
162.0.29.224 255.255.255.224 On-link 162.0.29.231 276
162.0.29.231 255.255.255.255 On-link 162.0.29.231 276
162.0.29.255 255.255.255.255 On-link 162.0.29.231 276
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 162.0.29.231 276
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 162.0.29.231 276

Any help would be greatly appreciated.

Thanks.


Teddy Boom
k kudos Received
Premium
join:2007-01-29
Toronto, ON
kudos:21
Kind of strange.. Must be that Rogers isn't routing that IP address properly, I guess. Get yourself a different IP address, and see if that helps.

To get a new IP, option 1:
Change the MAC address of the equipment connected to the modem

option 2:
Disconnect the coaxial cable and reboot modem. Go to »192.168.100.1, click on Configuration and then Restore All Defaults, confirm. Click Reboot.

Either reconnect the coaxial to see, or wait for more than 30 minutes and then reconnect the coaxial.

Of course check the IP address to confirm it is different (hopefully a different default gateway too?).
--
electronicsguru.ca

jobr

join:2004-10-21
Halifax, NS
reply to ms
Something strange is definitely going on here. 162.0.29.231 seems to not belong to Rogers, but to some outfit called AircomPlus:

NetRange: 162.0.0.0 - 162.0.255.255
CIDR: 162.0.0.0/16
OriginAS: AS35893
NetName: AIRCOMPLUS

Maybe someone at Rogers fat-fingered a netblock table in their DHCP server and it's doling out addresses that don't belong to Rogers?

ms

join:2013-08-02
Scarborough, ON
Aircomplus is a third party internet service provider for Rogers. IP address range is correct.