sysctl命令用于運行時配置內核參數，這些參數位于/proc/sys目錄下。sysctl配置與顯示在/proc/sys目錄中的內核參數．可以用sysctl來設置或重新設置聯網功能，如IP轉發、IP碎片去除以及源路由檢查等。用戶只需要編輯/etc/sysctl.conf文件，即可手工或自動執行由sysctl控制的功能。

??? 命令格式：

??? sysctl [-n] [-e] -w variable=value

??? sysctl [-n] [-e] -p <filename> (default /etc/sysctl.conf)

??? sysctl [-n] [-e]?-a

??? 常用參數的意義：

??? -w?? 臨時改變某個指定參數的值，如

????????sysctl -w net.ipv4.ip_forward=1

??? -a?? 顯示所有的系統參數

??? -p?? 從指定的文件加載系統參數，如不指定即從/etc/sysctl.conf中加載

??? 如果僅僅是想臨時改變某個系統參數的值，可以用兩種方法來實現,例如想啟用IP路由轉發功能：

??? 1) #echo 1 > /proc/sys/net/ipv4/ip_forward

??? 2) #sysctl -w net.ipv4.ip_forward=1

??? 以上兩種方法都可能立即開啟路由功能，但如果系統重啟，或執行了

????# service network restart

?命令，所設置的值即會丟失，如果想永久保留配置，可以修改/etc/sysctl.conf文件

?將 net.ipv4.ip_forward=0改為net.ipv4.ip_forward=1

1, sysctl命令的作用
???? 在運行時配置內核參數
2,用法舉例:
????? -w 用此選項來改變一個sysctl設置
???? 例:sysctl -w net.ipv4.ip_forward=1
???? -p?? 載入sysctl配置文件
?????????? 如-p后未指定路徑，則載入 /etc/sysctl.conf
???? 例: sysctl -p /etc/sysctl.conf

001	了解這些內核參數的意義對于解決問題會很有幫助。

002	sh-# sysctl -a

003	kernel.sched_child_runs_first = 0

004	kernel.sched_min_granularity_ns = 750000

005	kernel.sched_latency_ns = 6000000

006	kernel.sched_wakeup_granularity_ns = 1000000

007	kernel.sched_tunable_scaling = 1

008	kernel.sched_migration_cost = 500000

009	kernel.sched_nr_migrate = 32

010	kernel.sched_time_avg = 1000

011	kernel.sched_shares_window = 10000000

012	kernel.timer_migration = 1

013	kernel.sched_rt_period_us = 1000000

014	kernel.sched_rt_runtime_us = 950000

015	kernel.panic = 0

016	kernel.core_uses_pid = 0

017	kernel.core_pattern = core

018	kernel.core_pipe_limit = 0

019	kernel.tainted = 1

020	kernel.print-fatal-signals = 0

021	kernel.ctrl-alt-del = 0

022	kernel.modprobe = /sbin/modprobe

023	kernel.modules_disabled = 0

024	kernel.hotplug = /sbin/hotplug

025	kernel.sg-big-buff = 32768

026	kernel.cad_pid = 1

027	kernel.threads-max = 4606

028	kernel.random.poolsize = 4096

029	kernel.random.entropy_avail = 152

030	kernel.random.read_wakeup_threshold = 64

031	kernel.random.write_wakeup_threshold = 128

032	kernel.random.boot_id = 9e7b0657-6f91-4e94-9c05-55c49dd99da9

033	kernel.random.uuid = 309f03a1-28d0-47e0-9616-a390bb0349ba

034	kernel.usermodehelper.bset = 4294967295 4294967295

035	kernel.usermodehelper.inheritable = 4294967295? 4294967295

036	kernel.overflowuid = 65534

037	kernel.overflowgid = 65534

038	kernel.pid_max = 32768

039	kernel.panic_on_oops = 0

040	kernel.printk = 7?????? 4?????? 1?????? 7

041	kernel.printk_ratelimit = 5

042	kernel.printk_ratelimit_burst = 10

043	kernel.printk_delay = 0

044	kernel.dmesg_restrict = 0

045	kernel.kptr_restrict = 0

046	kernel.ngroups_max = 65536

047	kernel.randomize_va_space = 1

048	kernel.max_lock_depth = 1024

049	kernel.poweroff_cmd = /sbin/poweroff

050	kernel.blk_iopoll = 1

051	kernel.ostype = Linux

052	kernel.osrelease = 3.0.13

053	kernel.version = #1 PREEMPT Tue Oct 8 16:24:52 CST 2013

054	kernel.hostname= 1234

055	kernel.domainname = (none)

056	kernel.shmmax = 33554432

057	kernel.shmall = 2097152

058	kernel.shmmni = 4096

059	kernel.msgmax = 8192

060	kernel.msgmni = 575

061	kernel.msgmnb = 16384

062	kernel.sem = 250??????? 32000?? 32????? 128

063	kernel.auto_msgmni = 1

064	kernel.pty.max = 4096

065	kernel.pty.nr = 0

066	vm.overcommit_memory = 0

067	vm.panic_on_oom = 0

068	vm.oom_kill_allocating_task = 0

069	vm.oom_dump_tasks = 1

070	vm.overcommit_ratio = 50

071	vm.page-cluster = 3

072	vm.dirty_background_ratio = 10

073	vm.dirty_background_bytes = 0

074	vm.dirty_ratio = 20

075	vm.dirty_bytes = 0

076	vm.dirty_writeback_centisecs = 500

077	vm.dirty_expire_centisecs = 3000

078	vm.nr_pdflush_threads = 0

079	vm.swappiness = 60

080	vm.lowmem_reserve_ratio = 256?? 32????? 32

081	vm.drop_caches = 0

082	vm.min_free_kbytes = 2188

083	vm.min_free_order_shift = 1

084	vm.percpu_pagelist_fraction = 0

085	vm.max_map_count = 65530

086	vm.laptop_mode = 0

087	vm.block_dump = 0

088	vm.vfs_cache_pressure = 100

089	vm.mmap_min_addr = 4096

090	vm.highmem_is_dirtyable = 0

091	vm.scan_unevictable_pages = 0

092	fs.inode-nr = 2145????? 0

093	fs.inode-state = 2145?? 0?????? 0?????? 0?????? 0?????? 0?????? 0

094	fs.file-nr = 297??????? 0?????? 29469

095	fs.file-max = 29469

096	fs.nr_open = 1048576

097	fs.dentry-state = 2777? 2184??? 45????? 0?????? 0?????? 0

098	fs.overflowuid = 65534

099	fs.overflowgid = 65534

100	fs.leases-enable= 1

101	fs.dir-notify-enable= 1

102	fs.lease-break-time= 45

103	fs.aio-nr = 0

104	fs.aio-max-nr = 65536

105	fs.inotify.max_user_instances = 128

106	fs.inotify.max_user_watches = 8192

107	fs.inotify.max_queued_events = 16384

108	fs.epoll.max_user_watches = 111805

109	fs.suid_dumpable = 0

110	fs.pipe-max-size = 1048576

111	fs.mqueue.queues_max = 256

112	fs.mqueue.msg_max = 10

113	fs.mqueue.msgsize_max = 8192

114	dev.scsi.logging_level = 0

115	net.core.somaxconn = 128

116	net.core.xfrm_aevent_etime = 10

117	net.core.xfrm_aevent_rseqth = 2

118	net.core.xfrm_larval_drop = 1

119	net.core.xfrm_acq_expires = 30

120	net.core.wmem_max = 108544

121	net.core.rmem_max = 108544

122	net.core.wmem_default = 108544

123	net.core.rmem_default = 108544

124	net.core.dev_weight = 64

125	net.core.netdev_max_backlog = 1000

126	net.core.netdev_tstamp_prequeue = 1

127	net.core.message_cost = 5

128	net.core.message_burst = 10

129	net.core.optmem_max = 10240

130	net.core.netdev_budget = 300

131	net.core.warnings = 1

132	net.ipv4.route.gc_thresh = 4096

133	net.ipv4.route.max_size = 65536

134	net.ipv4.route.gc_min_interval = 0

135	net.ipv4.route.gc_min_interval_ms = 500

136	net.ipv4.route.gc_timeout = 300

137	net.ipv4.route.gc_interval = 60

138	net.ipv4.route.redirect_load = 4

139	net.ipv4.route.redirect_number = 9

140	net.ipv4.route.redirect_silence = 4096

141	net.ipv4.route.error_cost = 200

142	net.ipv4.route.error_burst = 1000

143	net.ipv4.route.gc_elasticity = 8

144	net.ipv4.route.mtu_expires = 600

145	net.ipv4.route.min_pmtu = 552

146	net.ipv4.route.min_adv_mss = 256

147	net.ipv4.neigh.default.mcast_solicit = 3

148	net.ipv4.neigh.default.ucast_solicit = 3

149	net.ipv4.neigh.default.app_solicit = 0

150	net.ipv4.neigh.default.retrans_time = 100

151	net.ipv4.neigh.default.base_reachable_time = 30

152	net.ipv4.neigh.default.delay_first_probe_time = 5

153	net.ipv4.neigh.default.gc_stale_time = 60

154	net.ipv4.neigh.default.unres_qlen = 3

155	net.ipv4.neigh.default.proxy_qlen = 64

156	net.ipv4.neigh.default.anycast_delay = 100

157	net.ipv4.neigh.default.proxy_delay = 80

158	net.ipv4.neigh.default.locktime = 100

159	net.ipv4.neigh.default.retrans_time_ms = 1000

160	net.ipv4.neigh.default.base_reachable_time_ms = 30000

161	net.ipv4.neigh.default.gc_interval = 30

162	net.ipv4.neigh.default.gc_thresh1 = 128

163	net.ipv4.neigh.default.gc_thresh2 = 512

164	net.ipv4.neigh.default.gc_thresh3 = 1024

165	net.ipv4.neigh.lo.mcast_solicit = 3

166	net.ipv4.neigh.lo.ucast_solicit = 3

167	net.ipv4.neigh.lo.app_solicit = 0

168	net.ipv4.neigh.lo.retrans_time = 100

169	net.ipv4.neigh.lo.base_reachable_time = 30

170	net.ipv4.neigh.lo.delay_first_probe_time = 5

171	net.ipv4.neigh.lo.gc_stale_time = 60

172	net.ipv4.neigh.lo.unres_qlen = 3

173	net.ipv4.neigh.lo.proxy_qlen = 64

174	net.ipv4.neigh.lo.anycast_delay = 100

175	net.ipv4.neigh.lo.proxy_delay = 80

176	net.ipv4.neigh.lo.locktime = 100

177	net.ipv4.neigh.lo.retrans_time_ms = 1000

178	net.ipv4.neigh.lo.base_reachable_time_ms = 30000

179	net.ipv4.neigh.eth0.mcast_solicit = 3

180	net.ipv4.neigh.eth0.ucast_solicit = 3

181	net.ipv4.neigh.eth0.app_solicit = 0

182	net.ipv4.neigh.eth0.retrans_time = 100

183	net.ipv4.neigh.eth0.base_reachable_time = 30

184	net.ipv4.neigh.eth0.delay_first_probe_time = 5

185	net.ipv4.neigh.eth0.gc_stale_time = 60

186	net.ipv4.neigh.eth0.unres_qlen = 3

187	net.ipv4.neigh.eth0.proxy_qlen = 64

188	net.ipv4.neigh.eth0.anycast_delay = 100

189	net.ipv4.neigh.eth0.proxy_delay = 80

190	net.ipv4.neigh.eth0.locktime = 100

191	net.ipv4.neigh.eth0.retrans_time_ms = 1000

192	net.ipv4.neigh.eth0.base_reachable_time_ms = 30000

193	net.ipv4.neigh.sit0.mcast_solicit = 3

194	net.ipv4.neigh.sit0.ucast_solicit = 3

195	net.ipv4.neigh.sit0.app_solicit = 0

196	net.ipv4.neigh.sit0.retrans_time = 100

197	net.ipv4.neigh.sit0.base_reachable_time = 30

198	net.ipv4.neigh.sit0.delay_first_probe_time = 5

199	net.ipv4.neigh.sit0.gc_stale_time = 60

200	net.ipv4.neigh.sit0.unres_qlen = 3

201	net.ipv4.neigh.sit0.proxy_qlen = 64

202	net.ipv4.neigh.sit0.anycast_delay = 100

203	net.ipv4.neigh.sit0.proxy_delay = 80

204	net.ipv4.neigh.sit0.locktime = 100

205	net.ipv4.neigh.sit0.retrans_time_ms = 1000

206	net.ipv4.neigh.sit0.base_reachable_time_ms = 30000

207	net.ipv4.tcp_timestamps = 1

208	net.ipv4.tcp_window_scaling = 6

209	net.ipv4.tcp_sack = 1

210	net.ipv4.tcp_retrans_collapse = 1

211	net.ipv4.ip_default_ttl = 64

212	net.ipv4.ip_no_pmtu_disc = 0

213	net.ipv4.ip_nonlocal_bind = 0

214	net.ipv4.tcp_syn_retries = 5

215	net.ipv4.tcp_synack_retries = 5

216	net.ipv4.tcp_max_orphans = 8192

217	net.ipv4.tcp_max_tw_buckets = 8192

218	net.ipv4.ip_dynaddr = 0

219	net.ipv4.tcp_keepalive_time = 7200

220	net.ipv4.tcp_keepalive_probes = 9

221	net.ipv4.tcp_keepalive_intvl = 75

222	net.ipv4.tcp_retries1 = 3

223	net.ipv4.tcp_retries2 = 15

224	net.ipv4.tcp_fin_timeout = 60

225	net.ipv4.tcp_tw_recycle = 0

226	net.ipv4.tcp_abort_on_overflow = 0

227	net.ipv4.tcp_stdurg = 0

228	net.ipv4.tcp_rfc1337 = 0

229	net.ipv4.tcp_max_syn_backlog = 128

230	net.ipv4.ip_local_port_range = 32768??? 61000

231	net.ipv4.ip_local_reserved_ports =

232	net.ipv4.igmp_max_memberships = 20

233	net.ipv4.igmp_max_msf = 10

234	net.ipv4.inet_peer_threshold = 65664

235	net.ipv4.inet_peer_minttl = 120

236	net.ipv4.inet_peer_maxttl = 600

237	net.ipv4.inet_peer_gc_mintime = 10

238	net.ipv4.inet_peer_gc_maxtime = 120

239	net.ipv4.tcp_orphan_retries = 0

240	net.ipv4.tcp_fack = 1

241	net.ipv4.tcp_reordering = 3

242	net.ipv4.tcp_ecn = 2

243	net.ipv4.tcp_dsack = 1

244	net.ipv4.tcp_mem = 7014 9354??? 14028

245	net.ipv4.tcp_wmem = 4096??????? 16384?? 299328

246	net.ipv4.tcp_rmem = 4096??????? 87380?? 299328

247	net.ipv4.tcp_app_win = 31

248	net.ipv4.tcp_adv_win_scale = 2

249	net.ipv4.tcp_tw_reuse = 0

250	net.ipv4.tcp_frto = 2

251	net.ipv4.tcp_frto_response = 0

252	net.ipv4.tcp_low_latency = 0

253	net.ipv4.tcp_no_metrics_save = 0

254	net.ipv4.tcp_moderate_rcvbuf = 1

255	net.ipv4.tcp_tso_win_divisor = 3

256	net.ipv4.tcp_congestion_control = cubic

257	net.ipv4.tcp_abc = 0

258	net.ipv4.tcp_mtu_probing = 0

259	net.ipv4.tcp_base_mss = 512

260	net.ipv4.tcp_workaround_signed_windows = 0

261	net.ipv4.tcp_slow_start_after_idle = 1

262	net.ipv4.tcp_available_congestion_control = cubic reno

263	net.ipv4.tcp_allowed_congestion_control = cubic reno

264	net.ipv4.tcp_max_ssthresh = 0

265	net.ipv4.tcp_cookie_size = 0

266	net.ipv4.tcp_thin_linear_timeouts = 0

267	net.ipv4.tcp_thin_dupack = 0

268	net.ipv4.udp_mem = 7014 9354??? 14028

269	net.ipv4.udp_rmem_min = 4096

270	net.ipv4.udp_wmem_min = 4096

271	net.ipv4.conf.all.forwarding = 0

272	net.ipv4.conf.all.mc_forwarding = 0

273	net.ipv4.conf.all.accept_redirects = 1

274	net.ipv4.conf.all.secure_redirects = 1

275	net.ipv4.conf.all.shared_media = 1

276	net.ipv4.conf.all.rp_filter = 0

277	net.ipv4.conf.all.send_redirects = 1

278	net.ipv4.conf.all.accept_source_route = 0

279	net.ipv4.conf.all.accept_local = 0

280	net.ipv4.conf.all.src_valid_mark = 0

281	net.ipv4.conf.all.proxy_arp = 0

282	net.ipv4.conf.all.medium_id = 0

283	net.ipv4.conf.all.bootp_relay = 0

284	net.ipv4.conf.all.log_martians = 0

285	net.ipv4.conf.all.tag = 0

286	net.ipv4.conf.all.arp_filter = 0

287	net.ipv4.conf.all.arp_announce = 0

288	net.ipv4.conf.all.arp_ignore = 0

289	net.ipv4.conf.all.arp_accept = 0

290	net.ipv4.conf.all.arp_notify = 0

291	net.ipv4.conf.all.proxy_arp_pvlan = 0

292	net.ipv4.conf.all.disable_xfrm = 0

293	net.ipv4.conf.all.disable_policy = 0

294	net.ipv4.conf.all.force_igmp_version = 0

295	net.ipv4.conf.all.promote_secondaries = 0

296	net.ipv4.conf.default.forwarding = 0

297	net.ipv4.conf.default.mc_forwarding = 0

298	net.ipv4.conf.default.accept_redirects = 1

299	net.ipv4.conf.default.secure_redirects = 1

300	net.ipv4.conf.default.shared_media = 1

301	net.ipv4.conf.default.rp_filter = 0

302	net.ipv4.conf.default.send_redirects = 1

303	net.ipv4.conf.default.accept_source_route = 1

304	net.ipv4.conf.default.accept_local = 0

305	net.ipv4.conf.default.src_valid_mark = 0

306	net.ipv4.conf.default.proxy_arp = 0

307	net.ipv4.conf.default.medium_id = 0

308	net.ipv4.conf.default.bootp_relay = 0

309	net.ipv4.conf.default.log_martians = 0

310	net.ipv4.conf.default.tag = 0

311	net.ipv4.conf.default.arp_filter = 0

312	net.ipv4.conf.default.arp_announce = 0

313	net.ipv4.conf.default.arp_ignore = 0

314	net.ipv4.conf.default.arp_accept = 0

315	net.ipv4.conf.default.arp_notify = 0

316	net.ipv4.conf.default.proxy_arp_pvlan = 0

317	net.ipv4.conf.default.disable_xfrm = 0

318	net.ipv4.conf.default.disable_policy = 0

319	net.ipv4.conf.default.force_igmp_version = 0

320	net.ipv4.conf.default.promote_secondaries = 0

321	net.ipv4.conf.lo.forwarding = 0

322	net.ipv4.conf.lo.mc_forwarding = 0

323	net.ipv4.conf.lo.accept_redirects = 1

324	net.ipv4.conf.lo.secure_redirects = 1

325	net.ipv4.conf.lo.shared_media = 1

326	net.ipv4.conf.lo.rp_filter = 0

327	net.ipv4.conf.lo.send_redirects = 1

328	net.ipv4.conf.lo.accept_source_route = 1

329	net.ipv4.conf.lo.accept_local = 0

330	net.ipv4.conf.lo.src_valid_mark = 0

331	net.ipv4.conf.lo.proxy_arp = 0

332	net.ipv4.conf.lo.medium_id = 0

333	net.ipv4.conf.lo.bootp_relay = 0

334	net.ipv4.conf.lo.log_martians = 0

335	net.ipv4.conf.lo.tag = 0

336	net.ipv4.conf.lo.arp_filter = 0

337	net.ipv4.conf.lo.arp_announce = 0

338	net.ipv4.conf.lo.arp_ignore = 0

339	net.ipv4.conf.lo.arp_accept = 0

340	net.ipv4.conf.lo.arp_notify = 0

341	net.ipv4.conf.lo.proxy_arp_pvlan = 0

342	net.ipv4.conf.lo.disable_xfrm = 1

343	net.ipv4.conf.lo.disable_policy = 1

344	net.ipv4.conf.lo.force_igmp_version = 0

345	net.ipv4.conf.lo.promote_secondaries = 0

346	net.ipv4.conf.eth0.forwarding = 0

347	net.ipv4.conf.eth0.mc_forwarding = 0

348	net.ipv4.conf.eth0.accept_redirects = 1

349	net.ipv4.conf.eth0.secure_redirects = 1

350	net.ipv4.conf.eth0.shared_media = 1

351	net.ipv4.conf.eth0.rp_filter = 0[ 2414.137398] process `sysctl' is using deprecated sysctl (syscall) net.ipv6.neigh.default.retrans_time; Use net.ipv6.neigh.default.retrans_time_ms instead.

352

?

353	net.ipv4.conf.eth0.send_redirects = 1

354	net.ipv4.conf.eth0.accept_source_route = 1

355	net.ipv4.conf.eth0.accept_local = 0

356	net.ipv4.conf.eth0.src_valid_mark = 0

357	net.ipv4.conf.eth0.proxy_arp = 0

358	net.ipv4.conf.eth0.medium_id = 0

359	net.ipv4.conf.eth0.bootp_relay = 0

360	net.ipv4.conf.eth0.log_martians = 0

361	net.ipv4.conf.eth0.tag = 0

362	net.ipv4.conf.eth0.arp_filter = 0

363	net.ipv4.conf.eth0.arp_announce = 0

364	net.ipv4.conf.eth0.arp_ignore = 0

365	net.ipv4.conf.eth0.arp_accept = 0

366	net.ipv4.conf.eth0.arp_notify = 0

367	net.ipv4.conf.eth0.proxy_arp_pvlan = 0

368	net.ipv4.conf.eth0.disable_xfrm = 0

369	net.ipv4.conf.eth0.disable_policy = 0

370	net.ipv4.conf.eth0.force_igmp_version = 0

371	net.ipv4.conf.eth0.promote_secondaries = 0

372	net.ipv4.conf.sit0.forwarding = 0

373	net.ipv4.conf.sit0.mc_forwarding = 0

374	net.ipv4.conf.sit0.accept_redirects = 1

375	net.ipv4.conf.sit0.secure_redirects = 1

376	net.ipv4.conf.sit0.shared_media = 1

377	net.ipv4.conf.sit0.rp_filter = 0

378	net.ipv4.conf.sit0.send_redirects = 1

379	net.ipv4.conf.sit0.accept_source_route = 1

380	net.ipv4.conf.sit0.accept_local = 0

381	net.ipv4.conf.sit0.src_valid_mark = 0

382	net.ipv4.conf.sit0.proxy_arp = 0

383	net.ipv4.conf.sit0.medium_id = 0

384	net.ipv4.conf.sit0.bootp_relay = 0

385	net.ipv4.conf.sit0.log_martians = 0

386	net.ipv4.conf.sit0.tag = 0

387	net.ipv4.conf.sit0.arp_filter = 0

388	net.ipv4.conf.sit0.arp_announce = 0

389	net.ipv4.conf.sit0.arp_ignore = 0

390	net.ipv4.conf.sit0.arp_accept = 0

391	net.ipv4.conf.sit0.arp_notify = 0

392	net.ipv4.conf.sit0.proxy_arp_pvlan = 0

393	net.ipv4.conf.sit0.disable_xfrm = 0

394	net.ipv4.conf.sit0.disable_policy = 0

395	net.ipv4.conf.sit0.force_igmp_version = 0

396	net.ipv4.conf.sit0.promote_secondaries = 0

397	net.ipv4.ip_forward = 0

398	net.ipv4.xfrm4_gc_thresh = 32768

399	net.ipv4.ipfrag_high_thresh = 262144

400	net.ipv4.ipfrag_low_thresh = 196608

401	net.ipv4.ipfrag_time = 30

402	net.ipv4.icmp_echo_ignore_all = 0

403	net.ipv4.icmp_echo_ignore_broadcasts = 1

404	net.ipv4.icmp_ignore_bogus_error_responses = 1

405	net.ipv4.icmp_errors_use_inbound_ifaddr = 0

406	net.ipv4.icmp_ratelimit = 1000

407	net.ipv4.icmp_ratemask = 6168

408	net.ipv4.rt_cache_rebuild_count = 4

409	net.ipv4.ping_group_range = 1?? 0

410	net.ipv4.ipfrag_secret_interval = 600

411	net.ipv4.ipfrag_max_dist = 64

412	net.ipv6.neigh.default.mcast_solicit = 3

413	net.ipv6.neigh.default.ucast_solicit = 3

414	net.ipv6.neigh.default.app_solicit = 0

415	net.ipv6.neigh.default.retrans_time = 200

416	net.ipv6.neigh.default.base_reachable_time = 30

417	net.ipv6.neigh.default.delay_first_probe_time = 5

418	net.ipv6.neigh.default.gc_stale_time = 60

419	net.ipv6.neigh.default.unres_qlen = 3

420	net.ipv6.neigh.default.proxy_qlen = 64

421	net.ipv6.neigh.default.anycast_delay = 100

422	net.ipv6.neigh.default.proxy_delay = 80

423	net.ipv6.neigh.default.locktime = 0

424	net.ipv6.neigh.default.retrans_time_ms = 1000

425	net.ipv6.neigh.default.base_reachable_time_ms = 30000

426	net.ipv6.neigh.default.gc_interval = 30

427	net.ipv6.neigh.default.gc_thresh1 = 128

428	net.ipv6.neigh.default.gc_thresh2 = 512

429	net.ipv6.neigh.default.gc_thresh3 = 1024

430	net.ipv6.neigh.lo.mcast_solicit = 3

431	net.ipv6.neigh.lo.ucast_solicit = 3

432	net.ipv6.neigh.lo.app_solicit = 0

433	net.ipv6.neigh.lo.retrans_time = 200

434	net.ipv6.neigh.lo.base_reachable_time = 30

435	net.ipv6.neigh.lo.delay_first_probe_time = 5

436	net.ipv6.neigh.lo.gc_stale_time = 60

437	net.ipv6.neigh.lo.unres_qlen = 3

438	net.ipv6.neigh.lo.proxy_qlen = 64

439	net.ipv6.neigh.lo.anycast_delay = 100

440	net.ipv6.neigh.lo.proxy_delay = 80

441	net.ipv6.neigh.lo.locktime = 0

442	net.ipv6.neigh.lo.retrans_time_ms = 1000

443	net.ipv6.neigh.lo.base_reachable_time_ms = 30000

444	net.ipv6.neigh.eth0.mcast_solicit = 3

445	net.ipv6.neigh.eth0.ucast_solicit = 3

446	net.ipv6.neigh.eth0.app_solicit = 0

447	net.ipv6.neigh.eth0.retrans_time = 200

448	net.ipv6.neigh.eth0.base_reachable_time = 30

449	net.ipv6.neigh.eth0.delay_first_probe_time = 5

450	net.ipv6.neigh.eth0.gc_stale_time = 60

451	net.ipv6.neigh.eth0.unres_qlen = 3

452	net.ipv6.neigh.eth0.proxy_qlen = 64

453	net.ipv6.neigh.eth0.anycast_delay = 100

454	net.ipv6.neigh.eth0.proxy_delay = 80

455	net.ipv6.neigh.eth0.locktime = 0

456	net.ipv6.neigh.eth0.retrans_time_ms = 1000

457	net.ipv6.neigh.eth0.base_reachable_time_ms = 30000

458	net.ipv6.neigh.sit0.mcast_solicit = 3

459	net.ipv6.neigh.sit0.ucast_solicit = 3

460	net.ipv6.neigh.sit0.app_solicit = 0

461	net.ipv6.neigh.sit0.retrans_time = 200

462	net.ipv6.neigh.sit0.base_reachable_time = 30

463	net.ipv6.neigh.sit0.delay_first_probe_time = 5

464	net.ipv6.neigh.sit0.gc_stale_time = 60

465	net.ipv6.neigh.sit0.unres_qlen = 3

466	net.ipv6.neigh.sit0.proxy_qlen = 64

467	net.ipv6.neigh.sit0.anycast_delay = 100

468	net.ipv6.neigh.sit0.proxy_delay = 80

469	net.ipv6.neigh.sit0.locktime = 0

470	net.ipv6.neigh.sit0.retrans_time_ms = 1000

471	net.ipv6.neigh.sit0.base_reachable_time_ms = 30000

472	net.ipv6.xfrm6_gc_thresh = 1024

473	net.ipv6.conf.all.forwarding = 0

474	net.ipv6.conf.all.hop_limit = 64

475	net.ipv6.conf.all.mtu = 1280

476	net.ipv6.conf.all.accept_ra = 1

477	net.ipv6.conf.all.accept_redirects = 1

478	net.ipv6.conf.all.autoconf = 1

479	net.ipv6.conf.all.dad_transmits = 1

480	net.ipv6.conf.all.router_solicitations = 3

481	net.ipv6.conf.all.router_solicitation_interval = 4

482	net.ipv6.conf.all.router_solicitation_delay = 1

483	net.ipv6.conf.all.force_mld_version = 0

484	net.ipv6.conf.all.max_addresses = 16

485	net.ipv6.conf.all.accept_ra_defrtr = 1

486	net.ipv6.conf.all.accept_ra_pinfo = 1

487	net.ipv6.conf.all.proxy_ndp = 0

488	net.ipv6.conf.all.accept_source_route = 0

489	net.ipv6.conf.all.disable_ipv6 = 1

490	net.ipv6.conf.all.accept_dad = 1

491	net.ipv6.conf.all.force_tllao = 0

492	net.ipv6.conf.default.forwarding = 0

493	net.ipv6.conf.default.hop_limit = 64

494	net.ipv6.conf.default.mtu = 1280

495	net.ipv6.conf.default.accept_ra = 1

496	net.ipv6.conf.default.accept_redirects = 1

497	net.ipv6.conf.default.autoconf = 1

498	net.ipv6.conf.default.dad_transmits = 1

499	net.ipv6.conf.default.router_solicitations = 3

500	net.ipv6.conf.default.router_solicitation_interval = 4

501	net.ipv6.conf.default.router_solicitation_delay = 1

502	net.ipv6.conf.default.force_mld_version = 0

503	net.ipv6.conf.default.max_addresses = 16

504	net.ipv6.conf.default.accept_ra_defrtr = 1

505	net.ipv6.conf.default.accept_ra_pinfo = 1

506	net.ipv6.conf.default.proxy_ndp = 0

507	net.ipv6.conf.default.accept_source_route = 0

508	net.ipv6.conf.default.disable_ipv6 = 1

509	net.ipv6.conf.default.accept_dad = 1

510	net.ipv6.conf.default.force_tllao = 0

511	net.ipv6.conf.lo.forwarding = 0

512	net.ipv6.conf.lo.hop_limit = 64

513	net.ipv6.conf.lo.mtu = 16436

514	net.ipv6.conf.lo.accept_ra = 1

515	net.ipv6.conf.lo.accept_redirects = 1

516	net.ipv6.conf.lo.autoconf = 1

517	net.ipv6.conf.lo.dad_transmits = 1

518	net.ipv6.conf.lo.router_solicitations = 3

519	net.ipv6.conf.lo.router_solicitation_interval = 4

520	net.ipv6.conf.lo.router_solicitation_delay = 1

521	net.ipv6.conf.lo.force_mld_version = 0

522	net.ipv6.conf.lo.max_addresses = 16

523	net.ipv6.conf.lo.accept_ra_defrtr = 1

524	net.ipv6.conf.lo.accept_ra_pinfo = 1

525	net.ipv6.conf.lo.proxy_ndp = 0

526	net.ipv6.conf.lo.accept_source_route = 0

527	net.ipv6.conf.lo.disable_ipv6 = 1

528	net.ipv6.conf.lo.accept_dad = -1

529	net.ipv6.conf.lo.force_tllao = 0

530	net.ipv6.conf.eth0.forwarding = 0

531	net.ipv6.conf.eth0.hop_limit = 64

532	net.ipv6.conf.eth0.mtu = 1500

533	net.ipv6.conf.eth0.accept_ra = 1

534	net.ipv6.conf.eth0.accept_redirects = 1

535	net.ipv6.conf.eth0.autoconf = 1

536	net.ipv6.conf.eth0.dad_transmits = 1

537	net.ipv6.conf.eth0.router_solicitations = 3

538	net.ipv6.conf.eth0.router_solicitation_interval = 4

539	net.ipv6.conf.eth0.router_solicitation_delay = 1

540	net.ipv6.conf.eth0.force_mld_version = 0

541	net.ipv6.conf.eth0.max_addresses = 16

542	net.ipv6.conf.eth0.accept_ra_defrtr = 1

543	net.ipv6.conf.eth0.accept_ra_pinfo = 1

544	net.ipv6.conf.eth0.proxy_ndp = 0

545	net.ipv6.conf.eth0.accept_source_route = 0

546	net.ipv6.conf.eth0.disable_ipv6 = 1

547	net.ipv6.conf.eth0.accept_dad = 1

548	net.ipv6.conf.eth0.force_tllao = 0

549	net.ipv6.conf.sit0.forwarding = 0

550	net.ipv6.conf.sit0.hop_limit = 64

551	net.ipv6.conf.sit0.mtu = 1480

552	net.ipv6.conf.sit0.accept_ra = 1

553	net.ipv6.conf.sit0.accept_redirects = 1

554	net.ipv6.conf.sit0.autoconf = 1

555	net.ipv6.conf.sit0.dad_transmits = 1

556	net.ipv6.conf.sit0.router_solicitations = 3

557	net.ipv6.conf.sit0.router_solicitation_interval = 4

558	net.ipv6.conf.sit0.router_solicitation_delay = 1

559	net.ipv6.conf.sit0.force_mld_version = 0

560	net.ipv6.conf.sit0.max_addresses = 16

561	net.ipv6.conf.sit0.accept_ra_defrtr = 1

562	net.ipv6.conf.sit0.accept_ra_pinfo = 1

563	net.ipv6.conf.sit0.proxy_ndp = 0

564	net.ipv6.conf.sit0.accept_source_route = 0

565	net.ipv6.conf.sit0.disable_ipv6 = 1

566	net.ipv6.conf.sit0.accept_dad = -1

567	net.ipv6.conf.sit0.force_tllao = 0

568	net.ipv6.ip6frag_high_thresh = 262144

569	net.ipv6.ip6frag_low_thresh = 196608

570	net.ipv6.ip6frag_time = 60

571	net.ipv6.route.gc_thresh = 1024

572	net.ipv6.route.max_size = 4096

573	net.ipv6.route.gc_min_interval = 0

574	net.ipv6.route.gc_timeout = 60

575	net.ipv6.route.gc_interval = 30

576	net.ipv6.route.gc_elasticity = 9

577	net.ipv6.route.mtu_expires = 600

578	net.ipv6.route.min_adv_mss = 1220

579	net.ipv6.route.gc_min_interval_ms = 500

580	net.ipv6.icmp.ratelimit = 1000

581	net.ipv6.bindv6only = 0

582	net.ipv6.ip6frag_secret_interval = 600

583	net.ipv6.mld_max_msf = 64

584	net.unix.max_dgram_qlen = 10

585

sh-#

總結

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