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Chapter 3 DXi3500 and DXi5500 Remote Management
Alerts
Quantum DXi3500 and DXi5500 User’s Guide
96
b
IP address in the
IP Address
field, if the value in the Network
Mask edit box ends in a zero, the value in the IP address edit box
must also end in a zero.
c
Subnet mask in the
Network Mask
field
Examples of
IP address
and
Network Masks
:
•
IP Address
: 153.203.16.65
Network Mask
: 255.255.16.65 - allows
only server 153.203.16.65 to have access.
•
IP Address
: 153.203.16.0
Network Mask
: 255.255.16.0 - allows only
servers in the range of 153.203.16.xx to have access.
•
IP Address
: 153.203.0.0
Network Mask
: 255.255.0.0 - allows only
servers in the range of 153.203.xx.xx to have access.
•
IP Address
: 153.0.16.0
Network Mask
: 255.0.16.0 - allows only
servers in the range of 153.xxx.16.xx to have access.
Note:
An IP Address of 0.0.0.0 will disable the IP Address access
control for the Community. Similarly, a ‘0’ in any Octet of
the IP Address (and corresponding Network Mask octet)
will allow access for the entire range of addresses in that
part of the IP Address. If not disabled, the source address
of an SNMP request is logically AND’ed with the Network
Mask associated with the supplied community name, and
the request will only honored if the result is equal to the IP
Address entered.
Note:
A Network Mask of 0.0.0.0 will disable the IP Address
access control for the Community. If not disabled, the
source address of an SNMP request is logically AND’ed
with the Network Mask entered, and the request will only
honored if the result is equal to the Network IP address.
When it is desired to provide access to a range of IP
Addresses in the Community, the Network Mask must
have the same number of ‘0’s in the same address octets as
the IP Address.