3Com CommWorks 5210 - Manual (Page 34)

34 C HAPTER 2: C ONFIGURATION
Defining a Range of
IP Addresses for
Authorized Access You can define a range of IP addresses for authorized access by using the
Network Mask field in the authorized access list.
The network mask that you type in this field masks the IP address for that entry
to define a range of authorized IP addresses.
For example, a network mask of 255.255.255.255 prevents access from all IP
addresses except the destination IP address. An entry with a destination IP
address of 139.78.202.192 and a network mask of 255.255.0.0 grants access
to all stations with IP addresses within the range of 139.78.0.0 and
139.78.255.255. An entry with the same IP address and a network mask of
255.0.0.0 grants access to all stations with an IP address beginning with 139.
Threshold
Monitoring
Configuration Threshold monitoring provides local monitoring of any MIB object’s value and
establishes threshold levels for which events can be generated. You can select
which objects to monitor and designate the threshold levels. Threshold values
can be provisioned independently to issue events if the actual values cross the
thresholds. This is different from trap filtering which describes how to
configure the frequency of the traps. This, instead, places thresholds on
certain performance parameter values and issues a trap when the threshold is
exceeded.
To set threshold monitoring from IP Telephony Manager:
1 Open a console window for the device where the threshold is going to be set.
(For the Media Gateway, you need to select the edge server card.)
2 From the Configuration menu, click Programmed Settings.
3 Select the 3COM SNMP SubAgent from the Select Entity window (For
Back-end Servers and the Gatekeeper, select 3Com SNMP Agent.) and click
OK.
Figure 8 Selecting an Entity Window
4 From the Parameter Group Selection window, select Threshold Monitor
Configuration.