Class of Service
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Support for configuring multiple queues as strict-high priority (EX4400-24MP, EX4400-24P, EX4400-24T, EX4400-48F, EX4400-48MP, EX4400-48P, EX4400-48T, EX4650, EX4650-48Y-VC, QFX5120-32C, QFX5120-48T, QFX5120-48T-VC, QFX5120-48Y, QFX5120-48Y-VC, and QFX5120-48YM)—Starting in Junos OS Release 22.1R1, you can configure multiple strict-high priority queues in which the queue with the highest priority value gets precedence.