Data Collection Best Practices ifIndex Changing

Hotswap

line card

out

Reboot

Hotswap

line card

in

ifIndexes can be reassigned across reboots.

Use ifAlias to track reassignment

time

Poll @t=1

Poll @t=2

Poll @t=3

Poll @t=4

If same type of line-card is reinserted into same slot, ifIndex must be reused.

RFC 2863

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