eriRouterIcrState reports this node's current role in the Inter Chassis Resilience pair, cycling from initialize while roles are being negotiated to either active or standby once determined, or to pendingStandby if an active node is waiting for operator confirmation to step down after a switchover. An admin reads this value to confirm which chassis is currently handling traffic and whether a manual intervention is required. For example, seeing eriRouterIcrState return pendingStandby tells the admin that this previously-active node has already yielded and is waiting for them to explicitly confirm the transition to standby.