3Com TR - Manual (Page 40)

3-4 C HAPTER 3: S ETTING U P FOR M ANAGEMENT
Managing over the Network
Any network manager application running Simple
Network Management Protocol (SNMP) can manage
the Switch 2000 TR, provided the Management Infor-
mation Base (MIB) is installed correctly on the man-
agement station. SNMP files for all 3Com products
are available on the “3Com Bulletin Board Service” in
Appendix F.
Network management applications provide their own
user interface to the management facilities. 3Com’s
Transcend
® family of network managers, for instance,
have all the facilities for managing the Switch 2000
TR. The Switch 2000 TR supports SNMP over TCP/IP
protocol.
IP Addresses
Internet Protocol (IP) addresses are designed using
dotted decimal notation, such as n.n.n.n, where n is a
number between 0 and 255.
A sample IP address is 192.128.40.120.
IP addresses have two parts:
■
The first part of the address (192.128.40 in the
example) identifies the network on which the
device resides. Network addresses are assigned by
international organizations. Each set of network
numbers is unique within the context of the Inter-
net.
■ The second part of the address (.120 in the exam-
ple) identifies the device within the network.
Assigning unique device addresses is the responsi-
bility of your network organization.
Operating IP in a Closed Network
If you are the manager of a network that has no con-
nection to the outside world, you might not need
uniquely assigned network addresses. If you are using
the IP protocol for internal management of your net-
work, you can assign arbitrary addresses, provided
each device is unique.
If you decide to use the IP protocol internally we sug-
gest using addresses in the 192.100.X.Y, series where
X and Y are numbers between 1 and 254.
If you later connect to the outside world, you will
have to re-assign new, valid network numbers
assigned to your network by the NIC or other interna-
tional organization. Refer to “Obtaining Network
Addresses”.
A subnet address is a filtering system for IP addresses.
We suggest using a general mask such as
255.255.255.0 if you are unsure what mask to use.
Obtaining Network Addresses
Contact one of the following organizations to obtain
a valid set of network addresses.
■ In the United States
InterNIC Registration Services
505 Huntmar Park Drive
Herndon, VA 22070
Telephone number: