Subnet Mask; Enable Ip Address Discovery - Cabletron Systems STHI User Manual

5.3.3

Subnet Mask

The Subnet Mask determines how the STHI directs SNMP Trap messages
(discussed in Section 5.5). The mask defines the portion of the trap
destination's IP address to be compared to the IP address of the STHI. If
the designated address portions match, the destination station is
determined to exist on the same subnet as the STHI; Network
Management Stations (NMS) within the STHI hub's own subnet are
addressed directly. Traps destined for stations on other subnets are sent
through a router.
• Set a new value for the Subnet Mask when workstations designated to
receive traps reside on a different subnet. In most cases, 255.255.0.0
(the 8-bit subnet mask) is the appropriate mask.
• Use the Subnet Mask setting of 0.0.0.0 when all workstations
designated to receive trap messages exist within the same subnet as
the STHI.
If the Subnet Mask is changed, the STHI will execute a soft-reset after
is invoked to re-initialize all affected parameters.
SAVE
5.3.4

Enable IP Address Discovery

This Yes/No toggle field is used to enable/disable IP Address Discovery.
(Refer to Section 1.2.8, IP Address Discovery.) Use the Return key to
toggle the field. When the toggle field set to
accompanying
State
Address. If it finds one, the
times, it displays FAILED.
Retry Interval
The
Retry Interval
attempts at IP Address Discovery. Each attempt takes about one
half-minute. The STHI then waits for as many minutes as specified in the
Retry Interval
address is acquired, the IP Address Discover feature is disabled, or the
process is attempted 500 times.
To force an immediate check, rather than waiting for the
next cycle, toggle
TIP
and then to
field indicates that the device is
field indicates ACQUIRED. If it fails 500
State
field determines the duration between automatic
field before trying again. This cycle continues until the
Enable IP Address Discovery
again, and then invoke SAVE.
YES
The System Level Screen
and is invoked, the
YES SAVE
SEEKING
an IP
1
to
NO
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