H3C S6520X-30QC-EI队列0DROP
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问题描述：
S6520X-30QC-EI作为ISP交换机使用，连接3条30G-ISP，交换机下面接得防火墙，目前内网整个吞吐大概在30G，之前使用正常，把交换机连接防火墙得接口全部镜像到一台服务器上面，连接服务器的接口一直显示队列0丢包，这个是什么问题，该怎么解决呢
组网及组网描述：
组网拓扑：
内网-防火墙-交换机-ISP，镜像流量是在交换机做的，目前就是连接服务器的镜像目的端口一直报队列0丢包。
%Dec 11 07:13:10:670 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_ETHERNET_RX_FLOW_FAILED: The inbound traffic volume drops below the threshold on Ten-GigabitEthernet1/0/13.
%Dec 11 07:11:41:322 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 07:11:21:319 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 07:09:41:289 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 07:09:21:283 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 07:09:21:283 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 07:09:01:277 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 07:08:21:263 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 07:08:01:215 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 07:06:48:219 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_RX_FLOW_FAILED_RESUME: The inbound traffic volume increases to the normal range on Ten-GigabitEthernet1/0/13.
%Dec 11 07:05:01:173 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 07:04:41:170 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:49:00:692 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:49:00:692 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:48:40:676 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:48:40:676 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:46:40:599 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:46:40:599 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:46:20:582 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:46:20:582 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:45:40:574 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:45:20:563 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:44:00:547 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:44:00:547 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:44:00:547 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/12.
%Dec 11 06:43:40:534 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:43:40:534 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:43:40:534 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/12.
%Dec 11 06:43:20:530 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:43:20:530 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:43:00:483 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:43:00:483 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:42:20:460 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:42:00:455 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:41:20:449 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:41:00:446 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:40:40:443 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:40:40:443 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:40:40:443 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/12.
%Dec 11 06:40:20:439 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:40:20:439 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:40:20:439 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/12.
%Dec 11 06:39:40:429 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:39:40:429 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:39:20:423 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:39:20:423 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:38:00:353 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:37:40:344 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:37:20:343 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:37:20:343 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/15.
%Dec 11 06:37:20:343 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP: Packet loss occurs in queue 0 of Ten-GigabitEthernet1/0/12.
%Dec 11 06:37:00:336 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/16.
%Dec 11 06:37:00:336 2025 Eurasia-ISP-Switch-S6520X-30QC-EI IFNET/4/IF_EGRESS_DROP_RECOVER: Packet loss recovers in queue 0 of Ten-GigabitEthernet1/0/15.
下面命令配置一下再看看：
brust-mode enable
还有的话就把镜像流量缩减一些吧
S6520X-30QC-EI交换机在镜像所有至防火墙的接口流量到服务器后，服务器连接接口出现队列0丢包，主要原因及排查建议如下：
1. **镜像流量超限**：交换机镜像为“N对1”复制，多条30G链路的聚合流量（总计可能达90G）被镜像至单个服务器接口（通常为10G或25G），远超出口带宽，导致**出方向拥塞丢包**，尤其在队列0（默认高优先级队列）积压。
2. **队列0丢包说明**：队列0通常承载控制报文或默认转发流量，大量镜像数据涌入导致调度不及时，引发丢包。可通过 `display qos queue-statistics interface` 查看队列深度与丢包增长趋势。
3. **解决方案**：
- **避免全量镜像**：仅镜像必要接口或指定流（通过ACL限流），降低镜像带宽。
- **提升镜像端口带宽**：使用40G/100G接口连接镜像服务器。
- **启用流量抑制或采样镜像**：配置如 `mirroring to observe-port sampling-rate 1:100`，降低镜像负载。
- **检查服务器处理能力**：确认网卡、驱动、抓包工具（如Wireshark）无丢包。
4. **补充建议**：当前版本较老（如R6628P40），建议升级至稳定新版本以优化QoS和镜像性能。
结论：**队列0丢包是因镜像流量远超服务器接口承载能力导致的拥塞，应减少镜像流量或提升出口带宽。**
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