Two static IP and two routers

ElkyElky

So it's possible to utilise it then?

I've no idea how to actually set it up. I need both routers to have their own address.

OR Modem > Switch > Router 1, Router 2 > Computers

One router successfully connects but the other doesn't. I tried unplugging router 1 and configuring router 2 with the second IP but it still didn't connect. I'm able to utilise the first IP whether I set the router to automatically obtain the address, or set it manually but I can't establish a connection with the second IP... hope that makes sense!

onomatopoeia99

To the OP, are you sure the extra address is not the WAN address (the place your connection terminates at the ISP)? Two is an unusual number to allocate - are they adjacent or are they entirely separate?

GunJack wrote: »

you don't, unless you have a second phone line installed. There is only one allocation of an IP address to one phone line....

Well that's completely wrong. I have a subnet of 16 contiguous routeable IPv4 addresses on my connection and they arrive on one phoneline.

Since they are a subnet, I only need to the one router to use them all. It means no NAT on my network, since I have less than 13 devices so all of them get a proper, non RFC1918 address. Because NAT is evil, and it is not a firewall either.

I don't know what a boutique ISP (referred to above) is, mine is just an ISP.

securityguy

ElkyElky wrote: »

So it's possible to utilise it then?

I've no idea how to actually set it up. I need both routers to have their own address.

OR Modem > Switch > Router 1, Router 2 > Computers

That can't possibly work on any standard UK network. The ISP will deliver all traffic to precisely one device on the customer's premises, other than in complex enterprise configurations. OP, what exactly are you trying to achieve?

GunJack

securityguy wrote: »

That can't possibly work on any standard UK network. The ISP will deliver all traffic to precisely one device on the customer's premises, other than in complex enterprise configurations. OP, what exactly are you trying to achieve?

this is what I was thinking above, and the OR modem in this config has to be that point, and would only support a single router which may or may not be configurable to logically provide what the op is eluding to..

System

Have a read of http://kb.eclipse.net.uk/display/1/kb/article.aspx?aid=1267&n=1&docid=61112

The WAN port of your modem will be using one (unless it passes it through) leaving one more to use internally

GunJack

link not working

System

GunJack wrote: »

link not working

Whoops

http://kb.eclipse.net.uk
Enter IP allocation and press search.
First hit (Connection Manager IP Addresses)

ElkyElky

The second IP increments 1 from the first one. xx.x.xxx.x19, xx.x.xxx.x20
and Eclipse gives me a subnet mask 255.255.255.252.

ElkyElky

So to route traffic from the second IP address, that would be configurable in the router? According to page Mug mentioned.

I have two routers, the Zyxel VMG8324-B10A that Eclipse gave me and my own Asus RT-AC68U.

onomatopoeia99

ElkyElky wrote: »

The second IP increments 1 from the first one. xx.x.xxx.x19, xx.x.xxx.x20
and Eclipse gives me a subnet mask 255.255.255.252.

That subnet mask means you have a /30, which is four contiguous addresses. However, the first is the network address and the last is the broadcast address, so these two should not normally be used in a standard network configuration (you can use them, but some things might not work as you expect).

Further, one of the remaining two will be the address assigned to your router by DHCP when it connects to the ISP. So, an example using a randomly chosen but theoretically valid /30:

Network address 83.128.7.0
Router address 83.128.7.1
unused 83.128.7.2
Broadcast 82.128.7.3

The last part of the network address (0 in my example) will obviously always be a multiple of the size of the block.

Since you were asking about IPv4 address exhaustion the other day, I had assumed you knew about IPv4 addressing fundamentals.

What are the actual final numbers (the part after the last dot) of the two IP addresses Eclipse say you can use (they should be between 0 and 255 and contain no 'x')?
What is the final number of the IP address that the router is assigned?

What I'm trying to establish is which of the four numbers in the subnet Eclipse say you can use.