Extreme Networks ExtremeWare Enterprise Manager, Инструкция по установке и эксплуатации

Страница: 82 / 264

5-10 E
XTREME
W
ARE
E
NTERPRISE
M
ANAGER
I
NSTALLATION AND
U
SER
G
UIDE
U
SING THE
I
NVENTORY
M
ANAGER
Examples:
— As an IP address Range (such as 10.203.10.20 to 10.203.10.45).
Note: There certain IP addresses that are reserved. You should not include these
addresses in your discovery.
• Class A networks 0 and 127 are reserved.
• Class D networks 224 - 239 are reserved for multicasting.
• All addresses above 239 are reserved.
• 255 is reserved for broadcast datagrams for either the host or network
portion of the IP address.
In addition, certain host addresses may be interpreted as broadcast
addresses, depending on the subnetting of your network.
The algorithm that processes IP addresses prior to initiating the discovery
request eliminates IP addresses that contain 255's in the host portion. This
decision is based on the IP address as well as the subnet mask.
4 Specify (or verify) the Subnet Mask size as appropriate. The value in the Subnet
Mask field is the number of bits to be masked, starting from the high-order
(left-hand) octet. The default subnet mask of 24 will mask the three high-order
octets.
5 Specify (or verify) the SNMP Read Community string so that the Enterprise
Manager will be able to retrieve information from any devices it discovers.
6 Click the New button to add the range into the Device Discovery Criteria list.
7 Repeat steps 3 through 6 to specify any additional device addresses or ranges for the
discovery.
IP Address Specification Addesses Generated
10.203.0.* polls 10.203.0.0 through 10.203.0.255
10.203.?.?? polls 10.203.0.0 through 10.203.9.99
0.203.0.1? or
10.203.0.10-19 both specify the same range: 10.203.0.10 through
10.203.0.19
10.203.0-2.10-30
polls
10.203.0.10 through 10.203.0.30
10.203.1.10 through 10.203.1.30
10.203.2.10 through 10.203.2.30