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Adding a Router to NMMGR.


To add a router to your network, the HP e3000 needs to be configured with information about where the routers are and what it can find on the other side. The terminology used on the HP e3000 maybe confusing to users who are new to wide area networks. (See below Glossary)

The HP e3000 refers to routers as internet gateways. This does not necessarily mean that you will be connecting to the Internet (Information Highway), although connection to the Internet is one of the main reasons routers are being added to networks.



A Local Area Network (LAN) is what you have in a single facility of one or more buildings. You will likely have one or more IP Networks on each LAN.

A Wide Area Network (WAN) is two or more LANs tied together. The LANs' area are usually in different cities or states. It would be very rare to have only one IP network on a WAN.

Nodes are devices that have network interfaces. Nodes include HP e3000s, PCs, routers, servers, communication servers, and just about anything else that needs to communicate across the network.

Each network interface has a unique IP Node Address. You can either set up a server that will assign the number for each device at boot-up or you can maintain a list and assign users from it. Some devices can have more than one IP Node Address.

IP Networks are groups of nodes separated by routers. An IP Network Address is distinguished from a device IP Node Address by ending in one or more zeros.

IP Addresses are formed of four numbers separated by periods with each number having a range of 001 to 254. The values of 000 and 255 are used by the protocols and cannot be used in the fourth place. An example IP Node Address is The IP Network Address would be for the sample above. This is a 'C' class network number and can have up to 254 individual addresses. The leading zero in each of the four parts of an IP address is optional. Most systems will recognize either form of the address. Some systems are sensitive to this and may not work if it is included or excluded.

Subnet or network mask is a term used for dividing an A, B, or C class address into multiple smaller networks.



Suppose a network has several PCs, one HP3000 and a Novell NetWare 4.1 File Server acting as an IP router. The IP Addresses are as follows:

Net A

Net B








Note that the NetWare server has two IP Node Addresses: one for each of the two network adapters, each on its own IP Network.

We have found that if the number of devices on the total network is not going to exceed 254, and if they are all located in the same facility, it is easier to manage numbering them if each device has a unique last number in the address. In this example, all the nodes have unique numbers and the only repeat is for the file server. The file server's two cards use the same last digit but different network numbers.



Logon as MANAGER.SYS and edit the NMCONFIG file with NMMGR. Include information about where the routers are located and what networks are available. Validate the information and use JCONFJOB.NET to update the permanent MPE network tables. Use NETCONTROL UPDATE to activate the new settings.


MPE/iX Step 1



Open Config F1


Unguided Config F2


Go To NI F3

Examine this screen.

The Network Interface Name should be LAN1. If some other name is presented, please take note of it. YOU WILL NEED TO SUBSTITUTE THIS NAME IN OTHER COMMANDS.

Then press:

Modify F6


Examine this screen.

If you are modifying an existing gateway/router; type the name as shown in the list into the field labeled Gateway Name. Then press:

Modify F6

If you are adding a new gateway/router, type the name in the field labeled Gateway Name.

Then press:

Add F5

Type the IP address of the network card or interface that is on the same section of the network as the HP3000 into the field labeled Neighbor Gateway IP Internet Address. Using the example network, would be entered.

Type the IP Network Address(s) for the networks that are on the other side of this router into the field labeled IP Network Address. Include all networks that can be reached through this router. The example network would use If this is the only router or the default router use an at sign, @, in this field in place of any specific address.

In most cases leave the IP Mask field blank. You may need to use this if you use a subnet of a class A, B, or C network.

Hops refers to the number of routers that must be crossed to reach the network specified. Most networks will use the value of one for Hops. This value can go as high as 1024 for special cases. If you are configuring this as the default router, use 1024. If the packets going to a network specified on this line must go through other router(s), use a value greater than one.

After you have entered all the network values, press:


Prior Screen F8 (7 times)



Validate NETXPORT F1

After you verify that the validation was successful, press:


Prior Screen F8 (3 times)

Exit Program F8


MPE/iX Step 2

Use the following command to update the DSDAD (DADCONF.NET.SYS) file.


Wait for this JOB to complete and check the STDLIST. If there are no errors, continue with the last step.


MPEi/X Step 3

You do not need to restart your system or stop virtual terminal access to enable the new configuration. The NETCONTROL command has an UPDATE option that allows this information to be added dynamically.

Do not use this command if you are changing existing routes that are currently in use.


Your system should now be ready to use through your router(s).


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