Router
昨天停電後無法上網
我在一家小公司工作，我們使用ASUS RT-N18U設置了 LAN 。我們在一個小型辦公室中，作為商業園的一部分，我們的網路通過有線網路進入，作為商業園提供的一攬子服務的一部分。
昨天我們停電了，從那以後我們就不能上網了。我可以連接到我們的本地伺服器、列印機等，僅此而已。我不知道問題是什麼，但是如果我什至可以知道問題是我們的 LAN 內部還是外部問題，那將是一個開始
編輯：我無法從路由器控制台 ping Google（或任何其他）伺服器。
路由器日誌顯示以下內容：
Aug 1 02:00:11 syslogd started: BusyBox v1.17.4 Aug 1 02:00:11 kernel: klogd started: BusyBox v1.17.4 (2016-02-03 06:01:20 CST) Aug 1 02:00:11 kernel: Linux version 2.6.36.4brcmarm (gitserv_asus@wireless-pub1) (gcc version 4.5.3 (Buildroot 2012.02) ) #1 PREEMPT Wed Feb 3 06:09:47 CST 2016 Aug 1 02:00:11 kernel: CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=10c53c7f Aug 1 02:00:11 kernel: CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache Aug 1 02:00:11 kernel: Machine: Northstar Prototype Aug 1 02:00:11 kernel: Ignoring unrecognised tag 0x00000000 Aug 1 02:00:11 kernel: Memory policy: ECC disabled, Data cache writeback Aug 1 02:00:11 kernel: Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60416 Aug 1 02:00:11 kernel: Kernel command line: root=/dev/mtdblock2 console=ttyS0,115200 init=/sbin/preinit earlyprintk debug Aug 1 02:00:11 kernel: Memory: 255708k/255708k available, 6436k reserved, 0K highmem Aug 1 02:00:11 kernel: Virtual kernel memory layout: Aug 1 02:00:11 kernel: vector : 0xffff0000 - 0xffff1000 ( 4 kB) Aug 1 02:00:11 kernel: fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) Aug 1 02:00:11 kernel: DMA : 0xf7e00000 - 0xffe00000 ( 128 MB) Aug 1 02:00:11 kernel: vmalloc : 0xd0800000 - 0xf0000000 ( 504 MB) Aug 1 02:00:11 kernel: lowmem : 0xc0000000 - 0xd0000000 ( 256 MB) Aug 1 02:00:11 kernel: modules : 0xbf000000 - 0xc0000000 ( 16 MB) Aug 1 02:00:11 kernel: .init : 0xc0008000 - 0xc0037000 ( 188 kB) Aug 1 02:00:11 kernel: .text : 0xc0037000 - 0xc0390000 (3428 kB) Aug 1 02:00:11 kernel: .data : 0xc03a8000 - 0xc03c7ec0 ( 128 kB) Aug 1 02:00:11 kernel: * Invalid signature of oopsbuf: FF-FF-FF-BE-FE-FF-FF-FF (len 4294967295) Aug 1 02:00:11 kernel: External imprecise Data abort at addr=0x0, fsr=0x1c06 ignored. Aug 1 02:00:11 kernel: Mount-cache hash table entries: 512 Aug 1 02:00:11 kernel: Found a AMD NAND flash: Aug 1 02:00:11 kernel: Total size: 128MB Aug 1 02:00:11 kernel: Block size: 128KB Aug 1 02:00:11 kernel: Page Size: 2048B Aug 1 02:00:11 kernel: OOB Size: 64B Aug 1 02:00:11 kernel: Sector size: 512B Aug 1 02:00:11 kernel: Spare size: 16B Aug 1 02:00:11 kernel: ECC level: 8 (8-bit) Aug 1 02:00:11 kernel: Device ID: 0x 1 0xf1 0x 0 0x1d 0x 1 0xf1 Aug 1 02:00:11 kernel: bio: create slab <bio-0> at 0 Aug 1 02:00:11 kernel: PCI: no core Aug 1 02:00:12 kernel: PCI: no core Aug 1 02:00:12 kernel: PCI: Fixing up bus 0 Aug 1 02:00:12 kernel: PCI: Fixing up bus 0 Aug 1 02:00:12 kernel: PCI: Fixing up bus 1 Aug 1 02:00:12 kernel: VFS: Disk quotas dquot_6.5.2 Aug 1 02:00:12 kernel: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) Aug 1 02:00:12 kernel: pflash: found no supported devices Aug 1 02:00:12 kernel: bcmsflash: found no supported devices Aug 1 02:00:12 kernel: Boot partition size = 524288(0x80000) Aug 1 02:00:12 kernel: lookup_nflash_rootfs_offset: offset = 0x200000 Aug 1 02:00:12 kernel: nflash: squash filesystem with lzma found at block 28 Aug 1 02:00:12 kernel: Creating 4 MTD partitions on "nflash": Aug 1 02:00:12 kernel: 0x000000000000-0x000000080000 : "boot" Aug 1 02:00:12 kernel: 0x000000080000-0x000000200000 : "nvram" Aug 1 02:00:12 kernel: 0x000000200000-0x000004000000 : "linux" Aug 1 02:00:12 kernel: 0x00000038d3e0-0x000004000000 : "rootfs" Aug 1 02:00:12 stop_nat_rules: apply the redirect_rules! Aug 1 02:00:12 kernel: Registering the dns_resolver key type Aug 1 02:00:12 kernel: Spare area=64 eccbytes 56, ecc bytes located at: Aug 1 02:00:12 kernel: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 18 19 20 21 22 23 24 25 26 27 28 29 30 31 34 35 36 37 38 39 40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Aug 1 02:00:12 kernel: Available 7 bytes at (off,len): Aug 1 02:00:12 kernel: (1,1) (16,2) (32,2) (48,2) (0,0) (0,0) (0,0) (0,0) Aug 1 02:00:12 kernel: Options: NO_AUTOINCR,NO_READRDY,BBT_SCAN2NDPAGE, Aug 1 02:00:12 kernel: Creating 2 MTD partitions on "brcmnand": Aug 1 02:00:12 kernel: 0x000004000000-0x000007ec0000 : "brcmnand" Aug 1 02:00:12 kernel: 0x000007ec0000-0x000008000000 : "asus" Aug 1 02:00:12 kernel: VFS: Mounted root (squashfs filesystem) readonly on device 31:3. Aug 1 02:00:12 kernel: et: module license 'Proprietary' taints kernel. Aug 1 02:00:12 kernel: Disabling lock debugging due to kernel taint Aug 1 02:00:12 kernel: et_module_init: passivemode set to 0x0 Aug 1 02:00:12 kernel: et_module_init: txworkq set to 0x1 Aug 1 02:00:12 kernel: et_module_init: et_txq_thresh set to 0x400 Aug 1 02:00:12 kernel: eth0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 6.37.14.105 (r485445) Aug 1 02:00:12 kernel: wl_module_init: passivemode set to 0x0 Aug 1 02:00:12 WAN Connection: ISP's DHCP did not function properly. Aug 1 02:00:12 kernel: wl_module_init: igs set to 0x0 Aug 1 02:00:12 kernel: wl_module_init: txworkq set to 0x1 Aug 1 02:00:12 kernel: eth1: Broadcom BCM4360 802.11 Wireless Controller 6.37.14.105 (r485445) Aug 1 02:00:16 dnsmasq[382]: warning: interface ppp1* does not currently exist Aug 1 02:00:16 RT-N18U: start httpd Aug 1 02:00:17 syslog: Generating SSL certificate... Aug 1 02:00:17 disk monitor: be idle Aug 1 02:00:17 hour monitor: daemon is starting Aug 1 02:00:17 hour monitor: daemon terminates Aug 1 02:00:17 miniupnpd[427]: version 1.9 started Aug 1 02:00:17 miniupnpd[427]: HTTP listening on port 54077 Aug 1 02:00:17 miniupnpd[427]: Listening for NAT-PMP/PCP traffic on port 5351 Aug 1 02:00:18 start_nat_rules: apply the nat_rules(/tmp/nat_rules_eth0_eth0)! Aug 1 02:00:18 syslog: module ledtrig-usbdev not found in modules.dep Aug 1 02:00:18 syslog: module leds-usb not found in modules.dep Aug 1 02:00:18 kernel: SCSI subsystem initialized Aug 1 02:00:20 kernel: xt_connbytes: Forcing CT accounting to be enabled Aug 1 02:00:21 kernel: nf_conntrack_rtsp v0.6.21 loading Aug 1 02:00:21 kernel: nf_nat_rtsp v0.6.21 loading Aug 1 02:00:21 kernel: jnl: driver (lke_9.2.0, Feb 3 2016 06:59:53, LBD=ON) loaded at bf5fa000 Aug 1 02:00:21 wan: finish adding multi routes Aug 1 02:00:22 kernel: ufsd:: trace mask set to 0000000f Aug 1 02:00:22 kernel: ufsd: driver (lke_9.2.0 lke_9.2.0_r248656_b5, build_host("wireless-pub1"), acl, ioctl, bdi, sd2(0), wb, bz, tr, rsrc) loaded at bf607000 Aug 1 02:00:22 kernel: NTFS support included Aug 1 02:00:22 kernel: Hfs+/HfsJ support included Aug 1 02:00:22 kernel: optimized: speed Aug 1 02:00:22 kernel: Build_for__ASUS_PRODUCTS_003_k2.6.36_2013-11-07_lke_9.2.0_r248656_b5 Aug 1 02:00:22 kernel: xhci_hcd 0000:00:0c.0: Failed to enable MSI-X Aug 1 02:00:22 kernel: xhci_hcd 0000:00:0c.0: failed to allocate MSI entry Aug 1 02:00:22 kernel: usb usb1: No SuperSpeed endpoint companion for config 1 interface 0 altsetting 0 ep 129: using minimum values Aug 1 02:00:22 WAN Connection: WAN was restored. Aug 1 02:00:48 hour monitor: daemon is starting Aug 1 02:00:48 hour monitor: ntp is not syn Aug 1 02:01:06 rc_service: udhcpc 432:notify_rc stop_upnp Aug 1 02:01:06 rc_service: udhcpc 432:notify_rc start_upnp Aug 1 02:01:06 rc_service: waitting "stop_upnp" via udhcpc ... Aug 1 02:01:06 miniupnpd[427]: shutting down MiniUPnPd Aug 1 02:01:08 miniupnpd[629]: version 1.9 started Aug 1 02:01:08 miniupnpd[629]: HTTP listening on port 47237 Aug 1 02:01:08 miniupnpd[629]: Listening for NAT-PMP/PCP traffic on port 5351 Aug 1 02:01:09 kernel: HTB: quantum of class 10002 is big. Consider r2q change. Aug 1 02:01:09 kernel: HTB: quantum of class 10060 is big. Consider r2q change. Aug 1 02:01:09 dhcp client: bound 192.168.0.102 via 192.168.0.254 during 60 seconds. Aug 1 02:01:17 hour monitor: daemon is starting Aug 1 02:01:17 hour monitor: ntp is not syn Aug 1 02:01:47 hour monitor: daemon is starting Aug 1 02:01:47 hour monitor: ntp is not syn Aug 1 02:02:17 hour monitor: daemon is starting Aug 1 02:02:17 hour monitor: ntp is not syn Aug 1 02:02:47 hour monitor: daemon is starting Aug 1 02:02:47 hour monitor: ntp is not syn Aug 1 02:03:17 hour monitor: daemon is starting Aug 1 02:03:17 hour monitor: ntp is not syn
日誌中有趣的一行是：
Aug 1 02:01:09 dhcp client: bound 192.168.0.102 via 192.168.0.254 during 60 seconds.這條線上有兩條有趣的資訊。首先，
192.168.0.102是一個 RFC 1918 地址。這不是您應該期望看到的分配給路由器 WAN 的內容。此外during 60 seconds，這並不完全是我所期望的。您還沒有提到您的 WAN 介面連接到什麼設備。但是您所看到的看起來與在連接到電纜端沒有連接的電纜調製解調器的路由器上看到的非常相似：
Apr 8 09:55:49 hostname dhclient: bound to 192.168.87.102 -- renewal in 26 seconds.這裡的相似之處是兩者都是 RFC 1918 地址，並且在這兩種情況下，租用時間都遠低於正常情況。調製解調器使用較短的租用時間來確保您的路由器在連接恢復後能夠快速獲得真實的 IP 地址。
因此，我會檢查已將該 IP 地址分配給您的路由器的調製解調器，因為該調製解調器很可能沒有網際網路連接。運氣好的話，您只需要重新啟動該調製解調器。如果這沒有幫助，您可以在重新啟動調製解調器 30 分鐘後嘗試重新啟動路由器。如果連接仍然無法正常工作，您必須聯繫負責調製解調器的 ISP。