Quote:
Originally Posted by PtolemyIV
a) if i connect pc to router with no modem connected then router assigns appropriate ip in range (e.g. 192.168.1.100). however, if i then connect the cable modem to the router i am unable to browse internet.
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Are you able to ping, say..the BBC?
Are you using appropriate DNS servers? either using NTL/VM/OpenDNS/etc 'hardcoded' to the PC(s)..or by using the routers DNS relay to forward to NTL/VM/OpenDNS/etc DNS?
Quote:
Originally Posted by PtolemyIV
b) if i have modem connected to router and then connect pc to router then i get assigned a global ip address (e.g. 92.234.x.x) presumably by the cable modem. i can access internet but only one device connected to the router can access internet at once (only one valid ip gets assigned and no more devices are able to join network) - also can obviously not have my internal lan for connecting various devices together.
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Interesting...is that IP on the PC or the WAN interface of the router?
Quote:
Originally Posted by PtolemyIV
It seems to me that i want to turn off the dhcp server in the cable modem but accessing the router page (192.168.100.0) yields no options to do this (status pages only)
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the external IP is assigned to the MAC address of the modem by DHCP - this cannot be turned off AFAIK. Also, from your example, the default router IP should be 192.168.1.1, and the cable modem should be 192.168.100.1.