Appendix A IfIndexes and Interface Identification 59
IfIndex Ranges
Although the following ranges of IfIndexes may not currently be assigned, they are reserved and you should assign them only to the indicated interface type:
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Note: If the Passport 4460 unit is set to factory defaults, the default IfIn- dex assignment for the primary netlink is 149 or 147 (for units with only one Ethernet Base Module port available). The Passport 4400 Install Tool automatically deletes IfIndex assignments 149 and 147. Install Tool may be used at any time for installation and/or configuration of the Passport 4460 unit. You should make sure the primary netlink is assigned to an IfIndex of 207 or higher, and avoid assigning anything to either IfIndex 149 or 147.
Safe IfIndex Ranges
You can assign available IfIndexes between 207 and 255 when creating, for example, a frame relay tunnel PVC, and not worry about the assignment being overwritten when new modules are defined on the Passport 4460 unit. Go to,
•“IfIndex Overview” on page 57
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•“IfIndex Table Display Description” on page 60
Getting Started with Passport 4400, Release 4.1
