Setting the National Personality
Each X.25 public network has its own standard configuration. The National
Personality refers to a group of 28 variables that define the characteristics of the
public data network. These variables provide the router with control information for
packets transferred over the link and influence the X.25 facilities used between and
XTP router and its local DTE.
All facilities contained in incoming call requests are passed on to the peer router,
regardless of whether the local router was configured to support that facility. For
example, when packet size negotiation is requested in the incoming call and flow
control negotiation is not configured in the router.
The router will insure any packet size and window size being negotiated is within
the range specified when defining the X.25 interface. For example, a packet window
greater than 7 is negotiated down to 7 if packet-ext-seq-mode has not been defined
for the X.25 interface.
Toview the configuration values, enter list detailed at the X.25 Config> prompt. To
set the default values for the national personality, enter set national-personality at
the X.25 Config> prompt. For further information, refer to
Software User’s Guide
Defining the IP Address
Before you configure the Concentrator router (as displayed in Figure 20on
page 366 ) for XTP,define the IP address for this router. Enter protocol ip at the
Config> prompt and enter add address at the IP config> prompt.
Config>protocol ip
IP config>add address
Which net is this address for [0]?3
New address [0.0.0.0]?128.185.100.7
Address mask [255.255.0.0]?255.255.255.0
Setting the Internal IP Address
Each router identifies its peer routers by the internal IP address of the peer routers.
Toset the internal IP address of the peer router, enter set internal IP address at
the IP Config> prompt.
IP config>set internal-ip-address
Internal IP address [0.0.0.0]?128.185.100.1
Configuring XTP
After you have configured X.25 and defined the IP address, you are ready to
configure XTP for the router.
If you need further configuration information when configuring XTP,see “XTP
Configuring Commands” on page 375.
Note: When configuring your network for XTP,remember that the peer routers are
always the routers you are communicating with over TCP/IP.Therefore, the
peer router can differ depending on the point of view. When configuring the
routers defined as Remote 1 router and Remote 2 router in Figure 20on
page 366 , to them the peer router is the Concentrator router.
Using XTP
Chapter28. Using XTP 369