# port > This sub-menu configures QoS settings for individual switch ports. It allows you to assign a QoS profile to ingress packets arriving on a specific port. If the port is configured as trusted, the assigned profile can... ----------- ## interface/ethernet/switch/qos/port **Syscap:** rbswitch and crs_prestera **Type:** Directory This sub-menu configures QoS settings for individual switch ports. It allows you to assign a QoS profile to ingress packets arriving on a specific port. If the port is configured as trusted, the assigned profile can be overridden by match rules based on packet header values. By default, all ports are untrusted and receive the default QoS profile (Best-Effort, PCP=0, DSCP=0). In this default state, priority fields are cleared from egress packets. QoS profile to assign to ingress packets by default. QoS Packet-to-Profile mapping. Trust Layer 2 header (PCP) for QoS mapping. Trust Layer 3 header (DSCP) for QoS mapping. QoS Tx Manager for egress traffic on this port. Priority Flow Control profile for ingress traffic on this port. Egress rate limit for queue 0. Egress rate limit for queue 1. Egress rate limit for queue 2. Egress rate limit for queue 3. Egress rate limit for queue 4. Egress rate limit for queue 5. Egress rate limit for queue 6. Egress rate limit for queue 7. **Port Stats** ```ros [admin@Mikrotik] /interface/ethernet/switch/qos/port> print stats where name=ether2 name: ether2 tx-packet: 2 887 tx-byte: 3 938 897 drop-packet: 1 799 drop-byte: 2 526 144 tx-queue0-packet: 50 tx-queue1-packet: 1 871 tx-queue3-packet: 774 tx-queue5-packet: 192 tx-queue0-byte: 3 924 tx-queue1-byte: 2 468 585 tx-queue3-byte: 1 174 932 tx-queue5-byte: 291 456 drop-queue1-packet: 1 799 drop-queue1-byte: 2 526 144 ``` **Port Resources/Usage** :::danger Due to hardware limitations, some switch chip models may break traffic flow while accessing QoS port `usage` data. Use port `usage` for diagnostics/troubleshooting only. For monitoring, use QoS `monitor` or Port `stats` instead. ::: ```ros [admin@crs326] /interface/ethernet/switch/qos/port> print usage where name=ether2 name: ether2 packet-cap: 136 packet-use: 5 byte-cap: 35 840 byte-use: 9 472 queue0-packet-cap: 130 queue0-packet-use: 1 queue1-packet-cap: 5 queue1-packet-use: 4 queue3-packet-cap: 65 queue3-packet-use: 2 queue0-byte-cap: 24 576 queue0-byte-use: 256 queue1-byte-cap: 7 680 queue1-byte-use: 6 144 queue3-byte-cap: 14 080 queue3-byte-use: 3 072 ``` **Port PFC Stats (Previous Generations)** ```ros [admin@crs317] /interface/ethernet/switch/qos/port> print pfc interval=1 where running name: sfp-sfpplus1 sfp-sfpplus2 ether1 pfc: roce disabled disabled pfc-tx: 46 pfc-paused-tc: 3 pfc3-pause-threshold: 1 048 576 pfc3-resume-threshold: 10 240 pfc3-use: 1 075 200 ``` **Port PFC Stats (New Generations)** ```routeros [admin@crs812] /interface/ethernet/switch/qos/port> print pfc interval=1 where pfc=roce name: sfp56-5 pfc: roce rx-pause: 287 tx-pause: 46 pfc3-use: 2 184 200 ``` Port name. Switch chip name. The total number of packets transmitted via this port. The total number of bytes transmitted via this port. Port's packet usage. The number of packets currently enqueued in all port's queues. Port's byte usage. The size of hardware buffers (in bytes) that are currently allocated for the enqueued packets. Since the buffers are allocated by blocks (usually - 256B each), the allocated buffer size can be bigger than the actual payload. Shared queue capacity (individual queue capacity + shared buffers) for queue 0. Shared queue capacity (individual queue capacity + shared buffers) for queue 1. Shared queue capacity (individual queue capacity + shared buffers) for queue 2. Shared queue capacity (individual queue capacity + shared buffers) for queue 3. Shared queue capacity (individual queue capacity + shared buffers) for queue 4. Shared queue capacity (individual queue capacity + shared buffers) for queue 5. Shared queue capacity (individual queue capacity + shared buffers) for queue 6. Shared queue capacity (individual queue capacity + shared buffers) for queue 7. Shared queue capacity (individual queue capacity + shared buffers) for queue 0. Shared queue capacity (individual queue capacity + shared buffers) for queue 1. Shared queue capacity (individual queue capacity + shared buffers) for queue 2. Shared queue capacity (individual queue capacity + shared buffers) for queue 3. Shared queue capacity (individual queue capacity + shared buffers) for queue 4. Shared queue capacity (individual queue capacity + shared buffers) for queue 5. Shared queue capacity (individual queue capacity + shared buffers) for queue 6. Shared queue capacity (individual queue capacity + shared buffers) for queue 7. Individual queue capacity. The maximum number of packets that can be enqueued in queue 0. Individual queue capacity. The maximum number of packets that can be enqueued in queue 1. Individual queue capacity. The maximum number of packets that can be enqueued in queue 2. Individual queue capacity. The maximum number of packets that can be enqueued in queue 3. Individual queue capacity. The maximum number of packets that can be enqueued in queue 4. Individual queue capacity. The maximum number of packets that can be enqueued in queue 5. Individual queue capacity. The maximum number of packets that can be enqueued in queue 6. Individual queue capacity. The maximum number of packets that can be enqueued in queue 7. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 0. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 1. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 2. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 3. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 4. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 5. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 6. Individual queue capacity. The maximum number of bytes that can be enqueued in queue 7. Queue packet usage. The number of enqueued packets in queue 0. Queue packet usage. The number of enqueued packets in queue 1. Queue packet usage. The number of enqueued packets in queue 2. Queue packet usage. The number of enqueued packets in queue 3. Queue packet usage. The number of enqueued packets in queue 4. Queue packet usage. The number of enqueued packets in queue 5. Queue packet usage. The number of enqueued packets in queue 6. Queue packet usage. The number of enqueued packets in queue 7. Queue buffer usage (in bytes) for queue 0. Queue buffer usage (in bytes) for queue 1. Queue buffer usage (in bytes) for queue 2. Queue buffer usage (in bytes) for queue 3. Queue buffer usage (in bytes) for queue 4. Queue buffer usage (in bytes) for queue 5. Queue buffer usage (in bytes) for queue 6. Queue buffer usage (in bytes) for queue 7. Maximum port buffer fill level (in bytes). Use the reset-counters command to reset values. Maximum queue buffer fill level (in bytes) for queue 0. Maximum queue buffer fill level (in bytes) for queue 1. Maximum queue buffer fill level (in bytes) for queue 2. Maximum queue buffer fill level (in bytes) for queue 3. Maximum queue buffer fill level (in bytes) for queue 4. Maximum queue buffer fill level (in bytes) for queue 5. Maximum queue buffer fill level (in bytes) for queue 6. Maximum queue buffer fill level (in bytes) for queue 7. Pause threshold of traffic class 0. Pause threshold of traffic class 1. Pause threshold of traffic class 2. Pause threshold of traffic class 3. Pause threshold of traffic class 4. Pause threshold of traffic class 5. Pause threshold of traffic class 6. Pause threshold of traffic class 7. Resume threshold of traffic class 0. Resume threshold of traffic class 1. Resume threshold of traffic class 2. Resume threshold of traffic class 3. Resume threshold of traffic class 4. Resume threshold of traffic class 5. Resume threshold of traffic class 6. Resume threshold of traffic class 7. Current buffer usage of traffic class 0 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. Current buffer usage of traffic class 1 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. Current buffer usage of traffic class 2 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. Current buffer usage of traffic class 3 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. Current buffer usage of traffic class 4 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. Current buffer usage of traffic class 5 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. Current buffer usage of traffic class 6 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. Current buffer usage of traffic class 7 (in bytes). In other words, it is the total size of all queued packets on all ports that were received from this port. Only PFC-enabled traffic classes are displayed. The list of traffic classes that should be paused. PFC pause frames (XOFF) are periodically sent with the listed timers set from this port. Unknown PFC frame count. Received PFC frame count. Transmitted PFC frame count. Received pause frame count. Transmitted pause frame count. The number of packets transmitted via this port from queue 0. The number of bytes transmitted via this port from queue 0. The number of packets transmitted via this port from queue 1. The number of bytes transmitted via this port from queue 1. The number of packets transmitted via this port from queue 2. The number of bytes transmitted via this port from queue 2. The number of packets transmitted via this port from queue 3. The number of bytes transmitted via this port from queue 3. The number of packets transmitted via this port from queue 4. The number of bytes transmitted via this port from queue 4. The number of packets transmitted via this port from queue 5. The number of bytes transmitted via this port from queue 5. The number of packets transmitted via this port from queue 6. The number of bytes transmitted via this port from queue 6. The number of packets transmitted via this port from queue 7. The number of bytes transmitted via this port from queue 7. Total transmitted packets dropped. Total transmitted bytes dropped. The number of packets dropped from queue 0. The number of bytes dropped from queue 0. The number of packets dropped from queue 1. The number of bytes dropped from queue 1. The number of packets dropped from queue 2. The number of bytes dropped from queue 2. The number of packets dropped from queue 3. The number of bytes dropped from queue 3. The number of packets dropped from queue 4. The number of bytes dropped from queue 4. The number of packets dropped from queue 5. The number of bytes dropped from queue 5. The number of packets dropped from queue 6. The number of bytes dropped from queue 6. The number of packets dropped from queue 7. The number of bytes dropped from queue 7.