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Figure 22. Boot Process for the Redundant Supervisor in a VSS Chassis
The only requirement to support Quad-Sup Uplink Forwarding is that both supervisor modules must be configured to
boot the 12.2(33)SXI4 or newer software version. The installation process for the redundant supervisor assumes that
the in-chassis active supervisor is already configured and converted to the virtual switching mode.
The following screenshot shows the console output at the stage where the redundant supervisor has detected the
virtual switch configuration from the in-chassis active supervisor and subsequently extracts the Sup-LC image file and
starts to boot as the In-chassis standby.
Once the in-chassis standby has fully loaded the Sup-LC image file, the supervisor will operate very much like a
DFC-enabled line card. The Sup-LC image file runs on the supervisor switch processor. Therefore the console
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