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#16
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IP6 Address
Char Jackson wrote:
VanguardLH wrote: There's the IP address of your intranet host. There's the IP address on the LAN-side of your router. There's the IP address on the WAN-side of your router. (*) There's the IP address on the WAN-side of the modem. (*) There's the IP address on the ISP-side of the modem. (*) You won't see this in a combo (router+modem). If I may nitpick just a bit, everything stated above is correct except that the modem also has a LANside and a WANside, rather than a WANside and an ISPside. (WANside and ISPside would refer to the same interface and are thus redundant.) Actually I made up the term ISPsideIP. The modem would only have a LANside and WANside interface. That terminology is best when the host is directly connected to the host. However, with the router and modem chained together, I wanted to differentiate the WAN-side of the modem as being to the ISP and its LAN-side interface going to the WAN-side of the router. Because of the chaining, I wanted to use terms that more closely represented how the interfaces were connected. Saying "modem's LAN-side interface to the router's WAN-side interface" is not a handy term and better left as a description. Most modem makers have settled on 192.168.100.1 as their hardcoded LANside IP address, Mine uses 10.0.0.1, also an APIPA address. https://en.wikipedia.org/wiki/Reserved_IP_addresses 10.0.0.0/8 Private network Used for local communications within a private network 192.168.0.0/16 Private network Used for local communications within a private network. My prior modem use 192.168.0.1 and I had shortcuts in my Start menu (in a Network subfolder) to easily connect to my modem. Took me a little bit when that stopped working to do an "ipconfig /all" to see the gateway IP address for my host had changed. I found your cable modem at with pics: https://www.amazon.com/MOTOROLA-Cert.../dp/B019ZY1ZWS The backside has only 1 Ethernet port, so it is usable with only a single intranet host Usually the case, but not strictly true. It used to be more common than it is now, but ISPs can assign a service profile that allows more than one routable IP address to be assigned from the CMTS. Sorry to be confusing. By "host" I meant any downstream device which would include a router (with its internal switch). Didn't seem Ross was at your level of technical detail. |
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#17
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IP6 Address
On Sat, 15 Dec 2018 16:19:25 -0600, VanguardLH wrote:
You can always put your own router downstream of the cable modem. You will have to do that, anyway, if you have more wired hosts than the number of ports on the combo modem. No, if you need more ports you don't add another router, you add another switch. If all you have is a spare router, you can use it as a switch if you disable its DHCP and remember not to use its WAN port. -- Char Jackson |
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