光纤局域网时断时续问题剖析
有人吆喝上不网,一ping果然是时断时续,老毛病,老寒腿又犯病啦,怎么办,去现场呢,还是远程调,还是坐办公室空想主义,真是纠结。
登录那个交换机居然还可以,配置也完整,不是配置的问题,只能查线路和设备了。
大型园区光纤局域网,有两个大楼网络不稳定,时断时续,愁人啊,一个楼光纤光缆是新布控的不能是主光缆问题,应该是交换机或者收发器问题,所有把所有的交换机收发器更换为新的,排除他两的问题,交换机属于三层,里面需要重新配置,里面有很多网段,这些智能交换机平时正常的时候,一定要做好设置备份,这样万一设备损坏,不能登录就可以快速的配置一台新的交换机,当然前提是也有新的备胎交换机。细节决定成败,留有备胎的重要性,以及做好所有网络设备,服务器,交换机,路由器,防火墙,深信服AC等的所有设备都好有一个完美的备份文件夹,以防万一,便于快速的恢复网络畅通状态。
但是事与愿违,网络过了两天还是时断时续,我也是没了啥。到底问题在哪里呢,难道是电脑中毒,网线问题吗,又陆陆续续的把电脑网线都重新制作水晶头,查看部分电脑网卡收发量巨大,应该是中毒,或者有恶意程序了,给关闭,给拔线,给断网,禁止上外网等处理措施。 现在我只能是怀疑部分网线在室外可能风吹雨淋,长年累月磨损严重,可能网线皮破损,导致铜线裸露,形成虚接,对于部分室外的网线给予重新布线,仅仅重新制作水晶头,设置用户网卡速率为10M半双工,已经不能解决问题了。
还有个情况就是部分电脑,由于能够上网,用户乱下载,胡安装一些不知所以的软件,总是常驻内存,总是开机就运行,导致收发量巨大,长此以往自然会导致交换机卡死,一般的只能交换机没有智能分析处理能力,相当于假死机一样,总是要休息一下,或等待很长时间,才能又恢复工作状态。华为交换机虽然很好,但也经受不起线路环路,短路,大数据流量包的冲击呀。
大型园区光纤局域网维护,难点就是距离远,线路高架或者埋地,登高作业,机房设备,交换机机柜线路错综复杂,人员不配合,现场环境脏乱差也会严重影响网络设备健康运行,网络的高效畅通。
办法总是比困难多,这就需要每个网管集思广益,多想办法,多总结经验,多开拓思路,把所有问题都能分析透彻,搞明白原理,弄通问题的关键点,不要不知所以,不要草草应付,不要无能为力,不要不管不问,所有的问题的解决都是一个学习理论,总结经验的美好过程。
这次的成功,就会影响下次的问题处理流程,和处理问题的速度。今天你总结了吗,明天你思考了吗
乘着工作的脚步,一件件的完美的管理网络的框架就形成了,不总结不分析,不长进,不思考,不主动,那么你永远踏步不前,被工作遗忘,被指责抛弃。终将碌碌无为,不了了之,羞愧离去。
期间用到的工具有:
网线钳
水晶头
网线测线仪
光纤测试笔,光笔
交换机:主要登录看配置
光纤单模收发器 :看收发器指示灯是否正常也能判断一部分网络问题
******************************************************************************
* Copyright (c) 2004-2011 Hangzhou H3C Tech. Co., Ltd. All rights reserved. *
* Without the owner's prior written consent, *
* no decompiling or reverse-engineering shall be allowed. *
******************************************************************************
Login authentication
Password:
<ccc>sys
System View: return to User View with Ctrl+Z.
[cangchunan]dis cur
#
version 5.20, Release 5103P01
#
sysname cangchunan
#
domain default enable system
#
telnet server enable
#
vlan 1
#
vlan 4
#
vlan 15
#
vlan 26
#
vlan 30 to 31
#
domain system
access-limit disable
state active
idle-cut disable
self-service-url disable
#
user-group system
#
interface NULL0
#
interface Vlan-interface1
ip address 172.16.1.10 255.255.255.0
#
interface Ethernet1/0/1
port link-type trunk
port trunk permit vlan all
#
interface Ethernet1/0/2
port link-type trunk
port trunk permit vlan all
#
interface Ethernet1/0/3
port access vlan 15
#
interface Ethernet1/0/4
port access vlan 15
#
interface Ethernet1/0/5
port access vlan 15
#
interface Ethernet1/0/6
port access vlan 15
#
interface Ethernet1/0/7
port access vlan 15
#
interface Ethernet1/0/8
port access vlan 15
#
interface Ethernet1/0/9
port access vlan 15
#
interface Ethernet1/0/10
port access vlan 15
#
interface Ethernet1/0/11
port access vlan 15
#
interface Ethernet1/0/12
port access vlan 15
#
interface Ethernet1/0/13
port access vlan 15
#
interface Ethernet1/0/14
port access vlan 15
#
interface Ethernet1/0/15
port access vlan 15
#
interface Ethernet1/0/16
port access vlan 15
#
interface Ethernet1/0/17
port access vlan 15
#
interface Ethernet1/0/18
port access vlan 31
#
interface Ethernet1/0/19
port access vlan 15
#
interface Ethernet1/0/20
port access vlan 15
#
interface Ethernet1/0/21
port access vlan 15
#
interface Ethernet1/0/22
port access vlan 30
#
interface Ethernet1/0/23
port link-type trunk
port trunk permit vlan all
#
interface Ethernet1/0/24
port link-type trunk
port trunk permit vlan all
#
interface GigabitEthernet1/0/25
port link-type trunk
port trunk permit vlan all
#
interface GigabitEthernet1/0/26
port link-type trunk
port trunk permit vlan all
combo enable fiber
#
ip route-static 0.0.0.0 0.0.0.0 172.16.1.1
#
load xml-configuration
#
user-interface aux 0
user-interface vty 0 4
user privilege level 3
set authentication password simple helon8
user-interface vty 5 15
#
return
[ccc]dis ?
acl Acl status and configuration information
archive Display archive information
arp Display ARP information
boot-loader Display boot loader information
bootp BOOTstrap Protocol
channel Informational channel status and configuration
information
clipboard Clipboard status and configuration information
clock Clock status and configuration information
cluster Cluster status and configuration information
command-alias Specify command alias
component All registered component information
connection Display connection information
cpu-usage Cpu usage information
current-configuration Current configuration
debugging Current setting of debugging switches
default-configuration Display system default configuration
device Display device information
dhcp Dynamic Host Configuration Protocol and BOOTP
debugging functions
dhcp-snooping DHCP Snooping
diagnostic-information System information for diagnosis
dldp DLDP status and configuration information
dns DNS status and configuration information
domain Display domain configuration
dot1x 802.1x configuration information
fib FIB status and configuration information
firewall-statistics Firewall status and configuration information
ftp FTP client status and configuration information
ftp-server FTP server status and configuration information
ftp-user FTP users status and configuration information
garp Generic Attribute Registration Protocol
gvrp GARP VLAN Registration Protocol
habp HABP status and configuration information
history-command The historical command information
hotkey Hotkey status and configuration information
hwtacacs HWTACACS server information
icmp ICMP information
igmp-snooping IGMP snooping group information
info-center Show information center configuration and contents
interface Status and configuration information for the
interface
ip Specify IP(Internet Protocol) configuration
information
ipc Interprocess communication
ipv6 IPv6 status and configuration information
job Schedule a system task
lacp Configure LACP Protocol
link-aggregation Display link aggregation group information
lldp Link Layer Discovery Protocol(802.1ab)
local-user Local user(s) information
logbuffer Logbuffer status and configuration information
loopback-detection Detect if loopback exists
mac-address MAC address information
mac-authentication MAC authenticate config information
mac-vlan MAC VLAN configuration information
memory Display memory information
mib-style MIB style
mirroring-group Specify mirroring-group
multicast-vlan Multicast-vlan configuration
ndp Neighbor discovery protocol
nqa Display NQA information
ntdp NTDP status and configuration information
ntp-service NTP(Network Time Protocol) service
oam OAM protocol
password-control Display password-control information
patch Display patch configuration information
pki Display PKI information
port Display port information
[cangchunan]dis interface ?
Ethernet Ethernet interface
GigabitEthernet GigabitEthernet interface
NULL NULL interface
Vlan-interface VLAN interface
brief Brief information of status and configuration for
interface(s)
| Matching output
<cr>
[cangchunan]dis interface eth
[cangchunan]dis interface Ethernet ?
<1-1> Slot number
brief Brief information of status and configuration for interface(s)
| Matching output
<cr>
[cangchunan]dis interface Ethernet bri
[cangchunan]dis interface Ethernet brief
The brief information of interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Speed or Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
Eth1/0/1 DOWN auto A T 1
Eth1/0/2 DOWN auto A T 1
Eth1/0/3 DOWN auto A A 15
Eth1/0/4 UP 100M(a) F(a) A 15
Eth1/0/5 DOWN auto A A 15
Eth1/0/6 DOWN auto A A 15
Eth1/0/7 DOWN auto A A 15
Eth1/0/8 DOWN auto A A 15
Eth1/0/9 DOWN auto A A 15
Eth1/0/10 UP 10M(a) F(a) A 15
Eth1/0/11 DOWN auto A A 15
Eth1/0/12 DOWN auto A A 15
Eth1/0/13 DOWN auto A A 15
Eth1/0/14 UP 100M(a) F(a) A 15
Eth1/0/15 DOWN auto A A 15
Eth1/0/16 DOWN auto A A 15
Eth1/0/17 DOWN auto A A 15
Eth1/0/18 UP 100M(a) F(a) A 31
Eth1/0/19 DOWN auto A A 15
Eth1/0/20 DOWN auto A A 15
Eth1/0/21 DOWN auto A A 15
Eth1/0/22 DOWN auto A A 30
Eth1/0/23 DOWN auto A T 1
Eth1/0/24 DOWN auto A T 1
[cangchunan]