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You need to visit the next two screens only if you are configuring a non-gateway node that is on the
same network as a gateway. In this case, the non-gateway node needs
to know the identity of any neighbor gateway.
Neighbor gateways can be either full or half gateways. (Go back
one level by pressing the [Prior Screen]
key, then select [Neighbor Gateways]
key). Gateways that are on the same network are called neighbor
gateways. A non-gateway node on an X.25 network may need
to go through a neighbor gateway in order to send messages to an
entirely different network. (Two nodes are on the same network if
the network portion of their IP addresses are
the same.) All X.25 nodes that are on the same network as a neighbor
gateway need to know the identity of any neighbor gateways. When
you configure an X.25 node, you enter into its configuration the
identity of any accessible neighbor gateways that share the same
network. The identified gateways may be either full or half gateways. Identify Neighbor Gateways (If Any Are Present) | |
NMMGR displays the Neighbor Gateways screen (Figure 6-7 “Neighbor Gateways Screen”) when you press the [Neighbor Gateways]
key at the X.25 Configuration screen. Figure 6-7 Neighbor Gateways Screen
![[Neighbor Gateways Screen]](img/gfx32.gif)
In the Gateway name
field, enter the name of a gateway that is on the same
network as the node that you are configuring. If you are adding the identified gateway for the
first time, press the [Add] key.
If you are modifying the configuration of this node, press the [Modify]
key. The Neighbor Gateway Reachable Networks screen will be displayed.
Proceed to "Identify Neighbor Gateway Reachable Networks." Repeat steps 1 and 2 for each gateway that is on
the same network as the node that you are configuring. When you
have finished, press the [Next Screen]
key to return to the X.25 Configuration screen.
Fields- Gateway name
Each gateway name can be as long as eight alphanumeric
characters. The first character must be alphabetic.
Identify Neighbor Gateway Reachable Networks | |
NMMGR displays the Neighbor Gateway Reachable Networks screen
(Figure 6-8 “Neighbor Gateways Screen”) when you press the
[Add] key or the [Modify]
key for a valid gateway name from the Neighbor Gateways screen. Figure 6-8 Neighbor Gateways Screen
![[Neighbor Gateways Screen]](img/gfx33.gif)
In the Neighbor Gateway IP Internetwork Address
field, enter the IP address of the gateway specified on the Neighbor
Gateways screen. An example is: C 192.007.007 001 In the IP Network Address
fields under the title Configured Reachable Networks,
enter the IP addresses of all the remote networks
that can be reached through the gateway whose IP address is configured
in the previous field. The IP subnet mask is optional. If entering one,
tab to the next field. In the IP subnet mask field, enter the number
in the same format as an IP address. For details on deriving an
IP subnet mask, refer to the HP 3000/iX Network Planning
and Configuration Guide. In the field labeled Hops,
enter the number of hops (full gateways) needed to get to the target
network. Two partner gateway halves count as one hop. Repeat steps 2, 3, and 4 for each remote reachable
network. If you need to configure more than 10 networks, press the
[Save Data] key then press the
[Next Page] key to enter more
networks. After you have finished entering the IP addresses
of all the reachable networks, press the [Save Data]
key. Press the [Next Screen]
key to return to the Neighbor Gateways screen. Back at the Neighbor Gateways screen, after you
have finished adding all of the neighboring gateways, press the
[Next Screen] key to return to
the X.25 Configuration screen. Follow instruction 7 in the section
in this chapter called "Step 6: Configure X.25
Network."
FieldsIf you have identified any neighbor gateways, then you will
also be identifying: 1) the IP Network Addresses
of all of the networks that you can reach through that gateway,
and 2) the number of hops (corresponding to
the number of gateways) that a packet passes through to reach a
remote network from the local network. Two gateway halves count
as one hop. |
