求網(wǎng)絡(luò)大神幫忙分析網(wǎng)絡(luò)掉線的原因。

ghsy3056_cu

公司用的10M光纖接進(jìn)機(jī)房的。
連接了H3C MSR20-11路由器。下面接的交換機(jī)和10幾臺(tái)服務(wù)器。  
從上周開始每天突然斷網(wǎng)四五次。。斷了后20多秒就自動(dòng)連接上正常了。斷的時(shí)候所有的客戶端都斷線。
ping 網(wǎng)關(guān)192.168.1.1也不通。Ping外網(wǎng)的網(wǎng)址也不通。。
斷網(wǎng)時(shí)使用arp -a查看，網(wǎng)關(guān)的IP和MAC都是正確的，和沒斷網(wǎng)時(shí)是一樣的。
客戶端也全部殺毒了。請(qǐng)大神們幫忙分析分析原因。
給聯(lián)通的打電話，工程師分析了半天說斷網(wǎng)時(shí)ping網(wǎng)關(guān)不通。線路的原因可能性小。
讓重點(diǎn)排查內(nèi)網(wǎng)呢。

ghsy3056_cu

補(bǔ)充一點(diǎn)，公司分了倆個(gè)網(wǎng)段，192.168.1是辦公用的。172.1.1是那10多臺(tái)服務(wù)器用的。
斷網(wǎng)時(shí)ping這倆個(gè)網(wǎng)段都ping不通。

沉寂

這個(gè)怎么感覺是交換機(jī)的問題��？是不是過熱了，然后重啟了，或者有人手工重啟了，呵呵……

ghsy3056_cu

那我怎么判斷是交換機(jī)的問題。機(jī)房只有我一個(gè)人有鑰匙，沒人重啟。交換機(jī)我看了一下也不熱。
那我把筆記本插到H3C MSR20-11路由器上或者交換機(jī)上看一下其他客戶端都斷網(wǎng)時(shí)我是否斷網(wǎng)。。
這樣也行吧。

ghsy3056_cu

今天又?jǐn)嗑W(wǎng)好幾次，請(qǐng)告訴幫忙看看路由器日志，謝謝

<H3C>dis log
Logging buffer configuration and contents:enabled
Allowed max buffer size : 1024
Actual buffer size : 512
Channel number : 4 , Channel name : logbuffer
Dropped messages : 0
Overwritten messages : 3
Current messages : 512

%Jan  1 00:01:29:721 2007 H3C IFNET/3/LINK_UPDOWN: Ethernet0/0 link status is UP
.
%Jan  1 00:01:29:721 2007 H3C IFNET/5/LINEPROTO_UPDOWN: Line protocol on the int
erface Ethernet0/0 is UP.
%Jan  1 00:01:29:722 2007 H3C IFNET/3/LINK_UPDOWN: Ethernet0/1 link status is UP
.
%Jan  1 00:01:29:722 2007 H3C IFNET/3/LINK_UPDOWN: Ethernet0/2 link status is UP
.
%Jan  1 00:01:29:816 2007 H3C IFNET/3/LINK_UPDOWN: Vlan-interface1 link status i
s UP.
%Jan  1 00:01:29:816 2007 H3C IFNET/5/LINEPROTO_UPDOWN: Line protocol on the int
erface Vlan-interface1 is UP.
%Jan  1 00:03:45:114 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.6, DHCP client hardware a
ddress = 001b-3832-3c6e, DHCP client lease = 86400.
%Jan  1 05:05:14:962 2007 H3C SC/6/SC_AAA_LAUNCH: -AAAType=AUTHEN-AAAScheme= loc
al-Service=login-UserName=root@system; AAA launched.
%Jan  1 05:05:14:963 2007 H3C SHELL/5/SHELL_LOGINFAIL:  TELNET user root failed
to log in from 197.7.65.22 on VTY0.
%Jan  1 08:36:17:821 2007 H3C SHELL/5/SHELL_LOGINFAIL:  TELNET user root failed
to log in from 59.165.108.194 on VTY0.
%Jan  1 08:36:17:821 2007 H3C SC/6/SC_AAA_LAUNCH: -AAAType=AUTHEN-AAAScheme= loc
al-Service=login-UserName=root@system; AAA launched.
%Jan  1 16:12:33:373 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.10, DHCP client hardware
address = 8c89-a570-32c6, DHCP client lease = 86400.
%Jan  1 16:16:35:474 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.11, DHCP client hardware
address = f0de-f160-c3b0, DHCP client lease = 86400.
%Jan  1 16:27:04:973 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.7, DHCP client hardware a
ddress = f0de-f1e8-ff33, DHCP client lease = 86400.
%Jan  1 16:30:39:542 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.12, DHCP client hardware
address = f0de-f1e8-f0a6, DHCP client lease = 86400.
%Jan  1 16:42:26:973 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.8, DHCP client hardware a
ddress = f0de-f142-e714, DHCP client lease = 86400.
%Jan  1 17:39:52:504 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.14, DHCP client hardware
address = 4437-e6ae-320d, DHCP client lease = 86400.
%Jan  1 18:16:00:904 2007 H3C DHCPSD/5/DHCPS_ALLOCATE_IP: DHCP server informatio
n: Server IP = 192.168.1.1, DHCP client IP = 192.168.1.17, DHCP client hardware
address = 001f-d048-016c, DHCP client lease = 86400.
%Jan  1 19:17:39:004 2007 H3C SC/6/SC_AAA_LAUNCH: -AAAType=AUTHEN-AAAScheme= loc
al-Service=login-UserName=telnet@system; AAA launched.
%Jan  1 19:17:39:005 2007 H3C SC/6/SC_AAA_SUCCESS: -AAAType=AUTHEN-AAAScheme= lo
cal-Service=login-UserName=telnet@system; AAA is successful.
%Jan  1 19:17:39:005 2007 H3C SC/6/SC_AAA_LAUNCH: -AAAType=AUTHOR-AAAScheme= loc
al-Service=login-UserName=telnet@system; AAA launched.
%Jan  1 19:17:39:006 2007 H3C SC/6/SC_AAA_SUCCESS: -AAAType=AUTHOR-AAAScheme= lo
cal-Service=login-UserName=telnet@system; AAA is successful.
%Jan  1 19:17:39:007 2007 H3C SC/6/SC_AAA_LAUNCH: -AAAType=ACCOUNT-AAAScheme= lo
cal-Service=login-UserName=telnet@system; AAA launched.

<H3C>

沉寂

最后一段日志有問題，AAA認(rèn)證這段在頻繁進(jìn)行認(rèn)證，具體原因可能是有異常登錄造成的，建議添加一下ACL，試一下。

ghsy3056_cu

我給聯(lián)通負(fù)責(zé)光纖的工程師打電話，第一段日志是反復(fù)的up/down。
他說是可能是網(wǎng)線沒插好，或者是光纖收發(fā)器問題、也有可能是華三路由器問題。

沉寂

網(wǎng)線沒接好其實(shí)很容易識(shí)別，看一下燈就行了，設(shè)備問題感覺可能性更大。另外，這種情況加一下ACL稍微防一下吧，反正也沒什么影響。

ghsy3056_cu

好的，謝謝斑竹。

lxjsarah

做一下固件升級(jí)呢？