Quantum DXi4700 User Manual page 288

Chapter 9: Configuration
Notifications
Figure 180: Edit SNMP Community Page
2. (Optional) In the Name box, select a different community to edit.
3. Enter a valid IP Address and Network Mask pair.
A pair is valid if performing a logical bitwise AND operation on the IP address and the network mask
results in the IP address. See the table below for examples:
IP Address / Network Mask
10.40.166.87
255.255.255.255
10.40.166.87
10.40.166.87
10.40.166.87
10.40.166.0
10.40.166.87
255.255.0.0
10.40.0.0
255.255.0.0
Additional Information
If you define a single community and set both the IP address and network mask to 0.0.0.0 (or
l
leave both blank), then IP address-based access control is disabled. In this case, the SNMP
agent is accessible from any IP address.
Quantum DXi4700 User's Guide
Result
Allows access only from 10.40.166.87
Allows access only from 10.40.166.87
Invalid because the logical bitwise operation (address AND mask)
is not equal to the address
Invalid because the logical bitwise operation (address AND mask)
is not equal to the address
Allows access from any client with address 10.40.xx.xx
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