dslreports logo
    All Forums Hot Topics Gallery


how-to block ads

Search Topic:
share rss forum feed


How do I configure my 5861 when I get my static IP

Assuming they ever send me the email with the 5 static IPs I should be getting eventually, how can I set my Efficient 5861 router to actually route the IPs to my computers.
I want to manually specify the IPs in each of my computers and have them directly viewable from the outside world, every port wide open. I do not want NAT or any private IP address assignment.
I tried looking at the command line interface documentation for the router, but it makes no sense to me, even though I am fairly competent with computers (I'm really more of a C/ASM/Linux programmer then a network configuration guy)
Is there a quick walkthrough or FAQ showing how to make this change with the 5861?
Yes I can telnet to or even access it via COM2.


Saint Louis, MO

I'm not as familiar with the 5861 as I am with some of the other routers, but what you're wanting to do is change your router back to an ordinary bridge modem. For systems like that, I usually recommend the 5260 or Westell modems and hook them up to hub, then your PC's from the hub. You should be able to configure the router to do the same thing, though.

Generally speaking on most routers, you just surf in and turn off NAT, PPPoE, PPPoA, Gateway routing, RIP, and anything else that the router would typically use to direct or manipulate your traffic. Just be certain you add the default gateway to each of your static PC's.

Algonquin, IL

reply to Anon

When we talk about 5 ip's we are really discussing what is called a routed
subnet. Ameritech.net currently only offers a 5 IP address block, but its
actually an 8 IP block. However the 1st IP and the last IP are used in the route
table of the RedBack in order to direct the traffic, and the 2nd to last is used
for the 5861's WAN interface. This is why there are 5 IP's available.

NOTE: An 8 IP subnet can also be called a /29 in regards to the subnet mask
(which would be This might be mindless techo-babble but I
think it's good to understand just incase somebody ever calls in a references it
this way. Besides technically its the proper way to reference it.

Example of a breakdown of a routed subnet: Network (programmed in the RedBack, not useable by customer) Free for use Free for use Free for use Free for use Free for use Router (WAN interface, not LAN) Broadcast (programmed in the RedBack, not useable by

With the above in mind, lets move onto the actual command to place this in the

Router command
First Private IP (in
case you want to
do a range of them)
Last Private IP
(again, used to end
the range if you are
using one)
addressable IP
address from
your 5 IP block
Name of the
sys addhostmapping

Which when typed look's just like this:

SpeedStream 5861 DMT Router (120-5861-005) v4.0.5 Ready
Login: *****
Logged in successfully!
# sys addhostmapping internet

Of course if the command is successful, then you will simply get another
prompt, as you can see above. Now to check to see if the router took the info
just do a "rem list":

Status............................... enabled
Our System Name when dialing out..... dslreguser@ameritech.net
Our Password used when dialing out... yes
PPPoE service ....................... *
Disconnect timeout (in seconds)...... 60
Min/max channels..................... 1/1
Protocol in use...................... PPP
ATM traffic shaping...................no
Authentication....................... disabled
Authentication level required........ PAP
Bandwidth management criteria........ both
Utilization threshold................ 50%
Use periodic LCP pings............... yes
Accept LAN configuration............. no
Dial Back.............................off
Request PPP Call Back.................no
Place ISDN Data Call as Voice Call....no
IP address translation............... on
Mapping(s) (IP Translation) ....... to mapped on to (1 entries)
etc, etc, etc.......

Simple, isn't it? So now our IP address table would look like this: Network (programmed in the RedBack, not useable by customer) ----> Free for use Free for use Free for use Free for use Router (WAN interface, not LAN) Broadcast (programmed in the RedBack, not useable by

And this will automatically forward all incoming traffic (and all ports) for to
the private IP of (which is beyond the 5861's DHCP pool
range, and must be statically defined in the designated computer).

Never mistake lack of talent for genius.

[text was edited by moderator]


South Bend, IN

Nice post DSLKIA -- even for us dynamic guys! I was curious about how the static IP's are handled. Networking 201 for all!

Mom, what's a subnet?
Campaign for Lost Infinitives! The car needs to be washed, not the car needs washed!

reply to Dennis

said by dslknowitall:
When we talk about 5 ip's we are really discussing what is called a routed
NOTE: An 8 IP subnet can also be called a /29 in regards to the subnet mask
(which would be This might be mindless techo-babble but I
Example of a breakdown of a routed subnet:

I have heard Ameritech gives IPs like that, and I understand the breakdown of the subnet just fine.

said by dslknowitall:
SpeedStream 5861 DMT Router (120-5861-005) v4.0.5 Ready
Login: *****
Logged in successfully!
# rem addhostmapping internet

This is what I specifically want to avoid. This would mean having to use 192.168 addresses in my computers on my LAN. I do not want this. I would like to be able to put the 169.129.154.x (or whatever its going to be) address directly into the IP configuration on my windows and/or Linux boxes.
Is this possible with the 5861 (which I already own, so no sense buying a different router now) ?

Algonquin, IL

Is it possible, yes (in theory). But it's not a current configuration that's known. Now if I actually had an IP block then I'd have tried by now, but since I don't I can only postulate. Since typically bridging is enabled, you might be able to define the IP address with a gateway of the router, or whatever is in the redbacks router table as the next hop (in theory the first ip of the subnet).
Doing it the way above though isn't necessarily a bad thing, as it forwards all port traffic for the global address to the private IP. It may not be what you want, but it certainly would allow running a web server, email server, etc with no problem. Either way its the only way i know of for sure that works, but if you wanna experiment I'm all ears to hear your results
Never mistake lack of talent for genius.


Stockbridge, MI

reply to Anon

Here's a guess... Working in theory with the #'s DSLkia provided:

Create a new SUBNET: dhcp add

Disable the DHCP server for this newly created subnet: dhcp disable

Hardcode each of your public ip's ( into each computer's TCP/IP stack.

I'm not sure if that will work or not. If anyone can comment on the likelihood, I would appreciate it. Feel free to move this to the Hardware Forum, I'm not sure how it ended up here?
[text was edited by author 2001-06-06 00:47:37]


Milwaukee, WI
reply to Anon

I did something along the lines of what you're looking to do - I can't give a nice list of commands like dslkia did because I ended up using the Windoze configuration software that comes with the router. I'd *intended* to do it with the CLI but 379 pages of CLI reference manual wasn't compatible with getting things working quickly

It was pretty straightforward using the GUI (which had the added advantage that it automatically backed up the router config first). I just turned off NAT, set up the IP, gateway, subnet etc as specified, turned on some filtering, saved and rebooted and...that was about it, really. If you plan to continue to use the built-in DHCP server, you'll need to change the settings for that too - the only two IPs I'm using so far are both statically assigned, so I turned it off.

Note that the admin IP stays the same (it can be changed, but only from the CLI, I think) - however, if you have the 5861 as your default gateway for machines behind it, that shouldn't be a problem.



North Olmsted, OH
reply to Anon

I also have the 5861 with the "five" static IPs. (It's actually a block of eight as was explained by DSLKIA above.)

One of the eight IPs is automatically assigned to the DSL (WAN)interface of the router every time it connects to Ameritech. This is the so-called "Gateway" IP address that will be mentioned in the letter you will get from Ameritech.

If is assigned to the WAN interface, you can't assign other 169.129.154.x numbers to the ethernet side. Think about it - if you had 169.129.154.x numbers assigned to both interfaces, how would the router know which interface to send 169.129.154.x traffic to? If you turn off routing and enable bridging then you could assign those static IPs to computers on your internal network, but I haven't looked in the manual to see if such a thing is actually possible.

I just used the "system addHost" command to map some of my static IPs to my email/web server and my DNS server. Works like a champ. I also figured out how to use the "remote ipfilter" and "eth ip filter" commands to block certain types of traffic from entering my network.


Well rtroha, you can have the same IP on both interfaces, and that is, in fact, how you go about setting up your static IP block to work like a real useful IP block.

I have mine setup and working, with only using the Configuration Manager software GUI for Windows that came with the router.

Here are the important settings (or what I think is important):

System Settings
----Ethernet IP Address
-------- with RIP1 1 Compatible
----DHCP Settings
Remote Routers
----(internet)TCP/IP Route Addresses
--------Disable Address Translation
------------Address boxes on left are blank, PPP assigns source and remote
------------WAN RIP = RIP 1 Compatible
IP and IPX Routing
----TCP/IP Routing: On

The Windows machine I am sitting at is hard set to with the GR/Kal DNS numbers manually entered as well.