HP X.25/9000 User's Guide HP-UX 11i v3 (5900-1523, August 2011)

Table 4 IP address and default subnet masks (continued)
Default Subnet MaskClassIP Address
255.255.255.0CA.B.C.* (A between 192 and 239)
(B,C between 0 and 254)
Not AllowedDA.B.C.* (A between 240 and 254)
(B,C between 0 and 254)
The Internet address is composed of two addresses: the network address and the subaddress.
Zero (0) and -1 are not allowed in the subaddress.
4. If required, click Modify IP over X.25 Defaults to modify the Idle Timer, Hold Timer, MTU Size
and System Max. IP Connections defaults.
Figure 5 Modify IP over X.25 defaults
Enter or modify field values as required (refer to the field descriptions below).
Table 5 Modify IP over X.25 defaults field descriptions
DescriptionField
Sets the number of seconds a circuit stands idle before it is cleared by IP. The range
is 0 to 32767. The default is 600.
Idle Timer
Sets the number of seconds a circuit may be inactive before it is designated as
inactive. Inactive circuits may be cleared when all other circuits are unavailable and
Hold Timer
a connection request is received by IP. Do not set the hold timer to a value greater
than the idle timer. The range is 0 to 32767. The default is 300.
The maximum transmission unit size in octets (bytes). The range is 20 to 8192. The
default is 2048. For DDN configured interfaces, it must be less than or equal to
1007.
MTU Size
The maximum number of IP connections that can be simultaneously active for the
whole system. This is a global parameter. The default value for this parameter is
256 connections.
System Max. IP
Connections
5. Click OK to return to the Configure X.25 Card window when you have finished configuring
the Internet address.
Verifying level 3 values
If you subscribe to a public network, the network provider will supply the appropriate settings for
most level 3 parameters. These settings will differ depending on the network provider and the type
18 Configuration