User guide

March 2005 Managing Your Canopy Network
Through Software Release 6.1
Page 310 of 425 Issue 1
Canopy System User Guide
◦ under internet (1) above:
− mgmt (2)
− private (4)
− other branches
◦ under mgmt (2) above: mib-2 (1) and other branches. (See MIB-II below.)
under private (4) above: enterprise (1) and other branches. (See Canopy
Enterprise MIB below.)
Beneath this level are non-standard branches that the enterprise may define.
Thus, the path to an object that is managed under MIB-II begins with the decimal string
1.3.6.1.2.1 and ends with the object identifier and instance(s), and the path to an object
that is managed under the Canopy Enterprise MIB begins with 1.3.6.1.4.1, and ends with
the object identifier and instance(s).
24.2.2 Object Instances
An object in the MIB can have either only a single instance or multiple instances, as
follows:
◦ a scalar object has only a single instance. A reference to this instance is
designated by .0, following the object identifier.
◦ a tabular object has multiple instances that are related to each other. Tables in
the MIB associate these instances. References to these instances typically are
designated by .1, .2, and so forth, following the object identifier.
24.2.3 Management Information Base Systems and Interface (MIB-II)
The standard MIB-II (Management Information Base systems and interface) objects are
programmed into the Canopy modules. To read this MIB, see Management Information
Base for Network Management of TCP/IP-based Internets: MIB II, RFC 1213 at
http://www.faqs.org/rfcs/rfc1213.html
.
The MIB-II standard categorizes each object as one of the types defined in Table 54.
Table 54: Categories of MIB-II objects
Objects in
category… Control or identify the status of…
system system operations in the module.
interfaces the network interfaces for which the module is configured.
ip Internet Protocol information in the module.
icmp
Internet Control Message Protocol information in the module.
(These messages flag IP problems and allow IP links to be tested.)
tcp
Transport Control Protocol information in the module (to control
and ensure the flow of data on the Internet).
udp
User Datagram Protocol information in the module (for checksum
and address).