Example B: Failed Chassis

Example B as presented in VSB LFR Stack Examples depicts both a failure of the bonding link between chassis 1 and 8 as well as a failure of chassis 4. Chassis 1 – 8 are configured for the default LFR priority of chassis ID * 10. Two stack segments survive. The total LFR priority for the original system is 360. The total LFR priority for stack segment chassis 5 – 8 is 260. Because this stack segment exceeds half the total LFR priority of the original stack, the front-panel ports for the stack segment containing chassis 5 – 8 remain enabled, and the front-panel ports for the stack segment containing chassis 1, 2, and 3 are taken down.