Nortel Networks 4400 User Manual
57
Getting Started with Passport 4400, Release 4.1
Appendix A
IfIndexes and Interface Identification
IfIndexes and Interface Identification
The following topics are discussed in this chapter.
•
“IfIndex Overview” on page 57
•
“Hard-Coded IfIndexes” on page 58
•
“Reserved IfIndexes and Ranges” on page 58
•
“IfIndex Table Display Definitions” on page 62
IfIndex Overview
Each physical and virtual interface on the Passport 4460 is assigned an IfIndex, a
unique identifier that allows SNMP to read and write status information. These
IfIndexes are used to establish logical links between interfaces and higher-level
applications and protocol stacks.
unique identifier that allows SNMP to read and write status information. These
IfIndexes are used to establish logical links between interfaces and higher-level
applications and protocol stacks.
The Passport 4460 can support up to 255 IfIndexes. Some of these are hard-coded
and cannot be changed; others are automatically reserved by the Passport 4460
operating system when the unit is powered on.
and cannot be changed; others are automatically reserved by the Passport 4460
operating system when the unit is powered on.
For more information on IfIndexes, proceed to the the following:
•
“Hard-Coded IfIndexes” on page 58
•
“Reserved IfIndexes and Ranges” on page 58
•
“IfIndex Table Display Description” on page 60