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Question What are the supported QoS features for the 16-port 10-Gigabit Ethernet MPC and 100-Gigabit Ethernet MPC? Answer The Gigabit Ethernet MPCs supports the following QoS functionality: - Port-based queuing Per-port shaping Eight queues per port 100 ms of delay buffer by default per port 200 ms of delay buffer configurable per port Ability to oversubscribe the delay buffer beyond 200 ms per port - Queue-level shaping and guaranteed rate Separate guaranteed and shaping rates Rate limit option to police a queue to act as a Low Latency Queue (LLQ) - Four WRED profiles per queue - Multiple queue priority levels - Strict High, High, Medium, and Low guaranteed priority levels Strict High and High are at the same hardware priority level Round robin at each guaranteed priority level - High and Low excess priority levels Queues perform WRR at the excess priority levels Strict priority scheduling at each excess priority level - Classification per VLAN MPLS EXP IPv6, IPv4 ToS Inner and outer tag 802.1p (and DEI7) MF classifiers per VLAN - Policers per VLAN Single rate, single-rate tricolor marking, two-rate tricolor marking, hierarchical policers Class-aware intelligent hierarchical policers Physical interface policers - Rewrites per VLAN MPLS EXP, IP DSCP/PREC Inner and outer tag 802.1p (and DEI7) Ingress DSCP rewrite For more information, see MX Series MS-MPC and MS-MIC Service Cards Data Sheet #vlan #GigabitEthernetMPC #FAQ