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3. Configuration Options
9000-A2-GB31-00 December 2002
3-79
Node Subnet Mask
Possible Settings: 000.000.000.000 – 255.255.255.255, Clear
Default Setting: 000.000.000.000
Specifies the subnet mask needed to access the node. Since the subnet mask is not
bound to a particular port, it can be used for remote access via a management PVC.
000.000.000.000 – 255.255.255.255 – Shows the subnet mask for the node, which can be
viewed or edited.
Clear – Fills the node subnet mask with zeros. When the node’s subnet mask is all zeros,
the IP protocol creates a default subnet mask based upon the class of the IP address:
Class A: 255.000.000.000, Class B: 255.255.000.000, or Class C: 255.255.255.000.
Default IP Destination
Possible Settings: None, Modem, COM, Ethernet, PVCname
Default Setting: None
Specifies an IP destination to route data that does not have a specifically defined route.
Examples:
If the default IP network is connected to the communications port, select COM.
If the default IP network is connected to a far-end device over the management PVC
named London for the remote device located in the London office, select the PVC
name London (as defined by the Name configuration option, Table 3-32, Management
PVC Options).
NOTE: If the link to the IP destination selected as the default route becomes disabled
or down, the unrouteable data will be discarded. Make sure that the link selected is
operational, and if that link goes down, change the default destination.
CAUTION: Use care when configuring a default route to an interface that has a subnet
route configured at a remote end where the NMS, router, LAN adapter, terminal server,
etc. is connected. Communicating with an unknown IP address on the subnet will
cause temporary routing loops, which will last 16 iterations times the retry count.
None – No default network destination is specified. Unrouteable data will be discarded.
This is the recommended setting.
Modem – Specifies that the default destination is connected to the modem port. Only
appears when the modem port Use option is set to Net Link.
COM – Specifies that the default destination is connected to the COM port. Only appears
when Port Use is set to Net Link (see Table 3-38, Communication Port Options).
Ethernet – For the FrameSaver SLV 9126 or 9128, specifies that the default destination is
connected to the Ethernet port. Only appears when the Ethernet port’s Interface Status
option is enabled. When selected, the Default Gateway Address must also be configured
(see Table 3-37, Ethernet Management Options).
PVCname – Specifies a name for the management PVC. Only appears when a
management PVC name is defined for the node. For example, when the network is
connected to a remote device located in the London office, London can be specified as
the PVC name, which is the link between the local FrameSaver unit and the one located in
London. London would appear as one of the available selections.
Table 3-31. Node IP Options (2 of 4)