问题
在TCP网络部署，当地接入节点中，出现这多的TIME_WAIT ,LAST_ACK ,FIN_WAIT1，
当时出现链接回收，不及时就会把服务资源，耗尽。就需要修改设备配置
ls -lh /proc/sys/net/ipv4/
cipso_cache_bucket_size
cipso_cache_enable
cipso_rbm_optfmt
cipso_rbm_strictvalid
conf
fib_multipath_use_neigh
fwmark_reflect
icmp_echo_ignore_all
icmp_echo_ignore_broadcasts
icmp_errors_use_inbound_ifaddr
icmp_ignore_bogus_error_responses
icmp_msgs_burst
icmp_msgs_per_sec
icmp_ratelimit
icmp_ratemask
igmp_link_local_mcast_reports
igmp_max_memberships
igmp_max_msf
igmp_qrv
inet_peer_maxttl
inet_peer_minttl
inet_peer_threshold
ip_default_ttl
ip_dynaddr
ip_early_demux
ip_forward #ip转发
ip_forward_use_pmtu
ipfrag_high_thresh
ipfrag_low_thresh
ipfrag_max_dist
ipfrag_secret_interval
ipfrag_time
ip_local_port_range
ip_local_reserved_ports
ip_nonlocal_bind
ip_no_pmtu_disc
neigh
ping_group_range
route
tcp_abort_on_overflow
tcp_adv_win_scale
tcp_allowed_congestion_control
tcp_app_win
tcp_autocorking
tcp_available_congestion_control
tcp_base_mss
tcp_challenge_ack_limit
tcp_congestion_control
tcp_dsack
tcp_early_retrans
tcp_ecn
tcp_ecn_fallback
tcp_fack
tcp_fastopen
tcp_fastopen_key
tcp_fin_timeout #fin包 time_out 时间
tcp_frto
tcp_fwmark_accept
tcp_invalid_ratelimit
tcp_keepalive_intvl #keepalive 保活信令间隔
tcp_keepalive_probes
tcp_keepalive_time #保活时间
tcp_limit_output_bytes
tcp_low_latency
tcp_max_orphans
tcp_max_reordering
tcp_max_syn_backlog
tcp_max_tw_buckets
tcp_mem
tcp_min_rtt_wlen
tcp_min_tso_segs
tcp_moderate_rcvbuf
tcp_mtu_probing
tcp_no_metrics_save
tcp_notsent_lowat
tcp_orphan_retries
tcp_pacing_ca_ratio
tcp_pacing_ss_ratio
tcp_probe_interval
tcp_probe_threshold
tcp_recovery
tcp_reordering
tcp_retrans_collapse
tcp_retries1
tcp_retries2
tcp_rfc1337
tcp_rmem
tcp_sack
tcp_slow_start_after_idle
tcp_stdurg
tcp_synack_retries
tcp_syncookies
tcp_syn_retries
tcp_thin_dupack
tcp_thin_linear_timeouts
tcp_timestamps
tcp_tso_win_divisor
tcp_tw_recycle
tcp_tw_reuse
tcp_window_scaling
tcp_wmem
tcp_workaround_signed_windows
udp_mem
udp_rmem_min
udp_wmem_min
xfrm4_gc_thresh
