Re: [GTALUG] how many addresses possible
On Sat, 29 Apr 2023 at 16:04, o1bigtenor via talk wrote: > > If I set up a router using the 192.168.1.1 I can access some 254 > distinct IP addresses from my router. > > If I set up a router using the 176.10.1.1 how many distinct IP > addresses can I access? > > (I'm thinking some 64k worth but dunno!) > Just how many addresses do you need? If you need double the size of the usual /24 (255.255.255.0) subnet, use the /23 subnet: Router: 192.168.1.1 Subnet: 255.255.254.0 (the equivalent of /23) In this case, your subnet will extend from 192.168.0.1 to 192.168.1.254 (512-2=510 addresses) If you need four times the size of the /24 subnet, use the /22 subnet: Router: 192.168.1.1 Subnet: 255.255.252.0 (= /22) Your subnet: 192.168.0.1 to 192.168.3.254 (1024-2=1022 addresses) Your router does not have to have its address end in .1, in fact it can have any address in your subnet. If you insist on your router having the very first IP address in your subnet, set it to 192.168.0.1 in the two examples above. Next time you connect to some public WiFi network, execute "ifconfig" to see your IP address and your subnet. In my observations, airports WiFi networks typically use the /22 subnets (up to 1022 addresses). Most restaurants, McDonalds included, use /24 subnets, but I have seen ones that use /23. I have not yet seen a public Wifi network that uses a /21 subnet providing up to 2046 addresses. To see where the address space in your IP subnet will begin and where it will end, you can use this online IP subnet calculator: https://www.calculator.net/ip-subnet-calculator.html --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On 2023-04-29 21:18, Kevin Cozens via talk wrote: On 2023-04-29 16:04, o1bigtenor via talk wrote: (My head is swimming with all the explanations on IP routing - - - have spent about 3 hours now looking at various documents - - - - I just can't find a clear answer. The first statement is my present network - - - I'm trying to figure out how to move beyond the access of only 254 devices at one time. The Internet Assigned Numbers Authority (IANA) has assigned several address ranges to be used by private networks. Address ranges to be use by private networks are: Class A: 10.0.0.0 to 10.255.255.255 Class B: 172.16.0.0 to 172.31.255.255 Class C: 192.168.0.0 to 192.168.255.255 If 0 and 255 should not be used for the last number then the 192 block gives you 254 address, 172.16 gives you 65534, and 10 gives you 16777214 addresses. And this continues the misunderstanding that the OP has that available address block size depends on the address. Yes I know the 3 ranges have different amounts of addresses available. What he has to learn is how to subnet, not follow obsolete info. I have been working with IP since early 1995, when I took some courses through Humber College. Even back then, address classes were obsolete. And back then, sitting in the class, I realized 32 bits was nowhere near enough, which is why I have been advocating for IPv6, ever since I first read about it, in the April 1995 issue of Byte magazine. --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On 2023-04-29 17:48, Scott Allen wrote: On Sat, 29 Apr 2023 at 17:39, James Knott wrote: That's only true because people have learned a lot of bad habits with IPv4. No, it's because IPv4 addresses are annotated as x.x.x.x Sticking with class size masks makes it easy to separate the network address part from the device address part. But then we get to the situation that led to the question in this thread, where people think the available addresses depends on which address range they're working with. As long as the subnet size fits within the allocated space, there is no problem. However it is better to think of address space in terms of need. For most, that would be a /24, as is commonly provided. It makes absolutely no difference whether that /24 is in the 192.168.0.0 /16 or 10.0.0.0 /8 blocks. If you really need more, then just think of subnet mask size. --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On 2023-04-29 16:04, o1bigtenor via talk wrote: (My head is swimming with all the explanations on IP routing - - - have spent about 3 hours now looking at various documents - - - - I just can't find a clear answer. The first statement is my present network - - - I'm trying to figure out how to move beyond the access of only 254 devices at one time. The Internet Assigned Numbers Authority (IANA) has assigned several address ranges to be used by private networks. Address ranges to be use by private networks are: Class A: 10.0.0.0 to 10.255.255.255 Class B: 172.16.0.0 to 172.31.255.255 Class C: 192.168.0.0 to 192.168.255.255 If 0 and 255 should not be used for the last number then the 192 block gives you 254 address, 172.16 gives you 65534, and 10 gives you 16777214 addresses. -- Cheers! Kevin. https://www.patreon.com/KevinCozens | "Nerds make the shiny things that | distract the mouth-breathers, and Owner of Elecraft K2 #2172 | that's why we're powerful" #include | --Chris Hardwick --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On Sat, 29 Apr 2023 at 17:39, James Knott wrote: > That's only true because people have learned a lot of bad habits with IPv4. No, it's because IPv4 addresses are annotated as x.x.x.x Sticking with class size masks makes it easy to separate the network address part from the device address part. -- Scott --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On 2023-04-29 17:39, James Knott wrote: That's only true because people have learned a lot of bad habits with IPv4. Also, originally, all IPv4 addresses had the same size subnet, /8. As that allowed only 256 networks, address classes were introduced, to provide more, smaller networks. Then even that proved inadequate, so Classless InterDomain Routing (CIDR) was introduced which is what we've been using for decades. https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing Here's a bit more info: "Versions 2 and 3, and a draft of version 4, allowed an address length of up to 128 bits,[6] but this was mistakenly[citation needed] reduced to 32 bits in the final version of IPv4." Vint Cerf, one of the creators of IP said he intended the address space was to be much larger. https://en.wikipedia.org/wiki/Internet_Protocol --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On 2023-04-29 16:39, Scott Allen wrote: Also, forget about address classes. They've been obsolete for over 30 years. That said, sticking with class sized masks and matching the network numbers for class based networks tends to simplify addressing and make things less confusing. That's only true because people have learned a lot of bad habits with IPv4. Also, originally, all IPv4 addresses had the same size subnet, /8. As that allowed only 256 networks, address classes were introduced, to provide more, smaller networks. Then even that proved inadequate, so Classless InterDomain Routing (CIDR) was introduced which is what we've been using for decades. https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On Sat, 29 Apr 2023 at 16:31, James Knott via talk wrote: > Also, forget about address classes. They've > been obsolete for over 30 years. That said, sticking with class sized masks and matching the network numbers for class based networks tends to simplify addressing and make things less confusing. -- Scott --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On 2023-04-29 16:04, o1bigtenor via talk wrote: If I set up a router using the 192.168.1.1 I can access some 254 distinct IP addresses from my router. If I set up a router using the 176.10.1.1 how many distinct IP addresses can I access? You're looking at the wrong numbers. What determines the max is the subnet mask, no matter the address range. So, a /24 gives you 254 usable addresses, etc.. Also, forget about address classes. They've been obsolete for over 30 years. Now, if you really want to have fun, a LAN on IPv6 will have 18.4 billion, billion addresses available. --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
Here is an OK set of videos on how IPv4 addressing works: Pt. 1: https://www.youtube.com/watch?v=ddM9AcreVqY Pt. 2: https://www.youtube.com/watch?v=XQ3T14SIlV4 Pt. 3: https://www.youtube.com/watch?v=4xlzlgYGqW8 Just try to not pay attention to his millennial bro-ism and excessive use of the word "engineer". > On Apr 29, 2023, at 16:04, o1bigtenor via talk wrote: > > Greetings > > (My head is swimming with all the explanations on IP routing - - - > have spent about 3 hours now looking at various documents - - - - I > just can't find a clear answer. The first statement is my present > network - - - I'm trying to figure out how to move beyond the access > of only 254 devices at one time. Please - - - this is not my business > - - - - I'm just using a highly connected system design idea in the > planning and trying to figure out how to get what I would like - - - > done. ) > > If I set up a router using the 192.168.1.1 I can access some 254 > distinct IP addresses from my router. > > If I set up a router using the 176.10.1.1 how many distinct IP > addresses can I access? > > (I'm thinking some 64k worth but dunno!) > > TIA > --- > Post to this mailing list talk@gtalug.org > Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On Sat, 29 Apr 2023 at 16:04, o1bigtenor via talk wrote: > If I set up a router using the 176.10.1.1 how many distinct IP > addresses can I access? Note that for a local private LAN, you shouldn't use 176.10.x.x The range allocated for private LANs is 172.16.x.x to 172.31.x.x Now it's time for James K. to tell you about IPV6 and the billions of addresses you can use. -- Scott --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On Sat, Apr 29, 2023 at 13:04 o1bigtenor via talk wrote: > Greetings > > (My head is swimming with all the explanations on IP routing - - - > have spent about 3 hours now looking at various documents - - - - I > just can't find a clear answer. The first statement is my present > network - - - I'm trying to figure out how to move beyond the access > of only 254 devices at one time. Please - - - this is not my business > - - - - I'm just using a highly connected system design idea in the > planning and trying to figure out how to get what I would like - - - > done. ) > > If I set up a router using the 192.168.1.1 I can access some 254 > distinct IP addresses from my router. > > If I set up a router using the 176.10.1.1 how many distinct IP > addresses can I access? > > (I'm thinking some 64k worth but dunno!) You can access as many addresses as you want from your router. The address block is determined by the subnet mask. Take a look at https://en.wikipedia.org/wiki/Private_network You will want to avoid 176, instead look at the 172.16. range or the entire 192.168.x.x range ( subnet mask will be 255.255.0.0) Hope that helps Dhaval > > TIA > --- > Post to this mailing list talk@gtalug.org > Unsubscribe from this mailing list > https://gtalug.org/mailman/listinfo/talk > --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] how many addresses possible
On Sat, 29 Apr 2023 at 16:04, o1bigtenor via talk wrote: > If I set up a router using the 176.10.1.1 how many distinct IP > addresses can I access? > > (I'm thinking some 64k worth but dunno!) Correct, except you can't use all 1s or all 0s as a host address, so 64k-2. -- Scott --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
[GTALUG] how many addresses possible
Greetings (My head is swimming with all the explanations on IP routing - - - have spent about 3 hours now looking at various documents - - - - I just can't find a clear answer. The first statement is my present network - - - I'm trying to figure out how to move beyond the access of only 254 devices at one time. Please - - - this is not my business - - - - I'm just using a highly connected system design idea in the planning and trying to figure out how to get what I would like - - - done. ) If I set up a router using the 192.168.1.1 I can access some 254 distinct IP addresses from my router. If I set up a router using the 176.10.1.1 how many distinct IP addresses can I access? (I'm thinking some 64k worth but dunno!) TIA --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] there is a solution! but.. continues wireless to ethernet adapter suggestions?
Thanks! Went back to check, a cat 6 at a cat5 price? 100 meters of Ethernet cable sounds like a prop for a stunt performance. Thanks everyone for your ideas and help. Kare On Sat, 29 Apr 2023, Lennart Sorensen wrote: On Fri, Apr 28, 2023 at 09:13:11PM -0400, Karen Lewellen via talk wrote: And some of you can, with my joining in, laugh at its simplicity. I located another outlet in the room serving as my office, where the adapter is connected. Suddenly I have the best Internet personally enjoyed in recent memory. going from needing to log back in within minutes and 8 hour down time, to lag lasting as long as a sneeze. However? my, aquired from Canada computers Ethernet cable, while reaching, is well not reaching safely. as in a tightrope for barbies to walk across the room. so, I ordered Ethernet cable from amazon Canada, at least it says it is Ethernet cable. I imagine? the non braided flat variety is the bees knees these days? What has me a tiny bit worried is how like, but not totally like the Ethernet plug I know well the ends look. I might have gotten too much..its 50 feet laughs! still it has these adorable little wall clip things and this belt that feels like Velcro and was only $12. I read the description 4 times, making sure Ethernet was in the features. Should I be worried? Back in the Internet fast lane, Given ethernet done using UTP (twisted pair) cable is allowed by the specifications to be 100 meters, I can't imagine a 50 foot cable will be any issue. And certainly there are flat cables made for people that want to be able to put them behind things. Some have nicer connectors than others, with rubber or other covers to protect the clip. Some people like those, some hate them (Some of them make the cable very hard to unplug. Good if you don't want it falling out or getting knocked, not good if you often need to plug and unplug a cable to do testing work). I hope your connection decides to stay working now. -- Len Sorensen --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
Re: [GTALUG] there is a solution! but.. continues wireless to ethernet adapter suggestions?
On Fri, Apr 28, 2023 at 09:13:11PM -0400, Karen Lewellen via talk wrote: > And some of you can, with my joining in, laugh at its simplicity. > I located another outlet in the room serving as my office, where the > adapter is connected. > Suddenly I have the best Internet personally enjoyed in recent memory. > going from needing to log back in within minutes and 8 hour down time, to > lag lasting as long as a sneeze. > However? > my, aquired from Canada computers Ethernet cable, while reaching, is well > not reaching safely. as in a tightrope for barbies to walk across the room. > so, I ordered Ethernet cable from amazon Canada, at least it says it is > Ethernet cable. I imagine? the non braided flat variety is the bees knees > these days? > What has me a tiny bit worried is how like, but not totally like the > Ethernet plug I know well the ends look. > I might have gotten too much..its 50 feet laughs! > still it has these adorable little wall clip things and this belt that > feels like Velcro and was only $12. > I read the description 4 times, making sure Ethernet was in the features. > Should I be worried? > Back in the Internet fast lane, Given ethernet done using UTP (twisted pair) cable is allowed by the specifications to be 100 meters, I can't imagine a 50 foot cable will be any issue. And certainly there are flat cables made for people that want to be able to put them behind things. Some have nicer connectors than others, with rubber or other covers to protect the clip. Some people like those, some hate them (Some of them make the cable very hard to unplug. Good if you don't want it falling out or getting knocked, not good if you often need to plug and unplug a cable to do testing work). I hope your connection decides to stay working now. -- Len Sorensen --- Post to this mailing list talk@gtalug.org Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk
