OpenWRT-BBR优化

主路由 OpwnWrt Turbo ACC 网络加速设置

路径：

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/etc/sysctl.conf

脚本：

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# Defaults are configured in /etc/sysctl.d/* and can be customized in this file
# ===============================
# OpenWrt sysctl.conf (主路由优化版)
# ===============================

# -------------------------------
# 默认存在的桥接相关参数（避免 bridge 转发走防火墙，提升性能）
net.bridge.bridge-nf-call-arptables = 0
net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-call-iptables = 0

# -------------------------------
# 主路由优化参数

# 1. 提升连接跟踪表容量（根据内存大小可调，低内存设备可调小一些）
net.netfilter.nf_conntrack_max = 262144

# 2. TCP 缓冲区与内存优化
net.core.rmem_max = 67108864
net.core.wmem_max = 67108864
net.core.netdev_max_backlog = 16384
net.ipv4.tcp_rmem = 4096 87380 67108864
net.ipv4.tcp_wmem = 4096 65536 67108864

# 3. TIME_WAIT 优化
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 10

# 4. 队列与并发优化
net.ipv4.tcp_max_syn_backlog = 8192
net.core.somaxconn = 8192

# 5. 安全/性能优化（避免额外路由计算）
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.default.send_redirects = 0

# 6. TCP Fast Open（浏览器/应用端支持才有效）
net.ipv4.tcp_fastopen = 3

# 提高 conntrack hash 桶数量（避免大并发卡顿）
net.netfilter.nf_conntrack_buckets = 131072

# 优化 TCP 窗口自动扩展
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_mtu_probing = 1

应用新参数：

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sysctl -p

检查是否生效：

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sysctl net.netfilter.nf_conntrack_max
sysctl net.ipv4.tcp_congestion_control

主路由 无Turbo ACC 网络加速设置

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# BBR & TCP 优化参数
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr

# 连接跟踪表容量
net.netfilter.nf_conntrack_max = 262144
net.netfilter.nf_conntrack_buckets = 131072

# TCP 缓冲区与内存优化
net.core.rmem_max = 67108864
net.core.wmem_max = 67108864
net.core.netdev_max_backlog = 16384
net.ipv4.tcp_rmem = 4096 87380 67108864
net.ipv4.tcp_wmem = 4096 65536 67108864

# TIME_WAIT 优化
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 10

# 队列与并发优化
net.ipv4.tcp_max_syn_backlog = 8192
net.core.somaxconn = 8192

# 安全/性能优化
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.default.send_redirects = 0

# TCP Fast Open
net.ipv4.tcp_fastopen = 3

# TCP 窗口扩展
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_mtu_probing = 1

# 桥接相关参数（避免性能损耗）
net.bridge.bridge-nf-call-arptables = 0
net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-call-iptables = 0

AP路由

路径：

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/etc/sysctl.conf

脚本：

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# Defaults are configured in /etc/sysctl.d/* and can be customized in this file

# ===============================
# OpenWrt sysctl.conf (AP 优化版)
# ===============================

# 1. TCP 连接表小一些（AP 不做 NAT，大表没必要）
net.netfilter.nf_conntrack_max = 65536

# 2. 减少 TIME_WAIT 连接（无线多客户端时有帮助）
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_fin_timeout = 10

# 3. 队列优化（应对并发 WiFi 连接）
net.core.netdev_max_backlog = 8192
net.core.somaxconn = 4096

# 4. 安全/性能优化（禁止额外的重定向）
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.default.send_redirects = 0

检查是否生效：

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# 查看当前 TCP 拥塞控制算法
sysctl net.ipv4.tcp_congestion_control

# 查看内核里支持哪些拥塞控制
sysctl net.ipv4.tcp_available_congestion_control

# 查看当前默认队列规则（BBR 依赖 fq）
sysctl net.core.default_qdisc