I recently in preparation for the contest three networks，Front also wrote an article entitled "Examples of commonly used maintenance commands SoftCo9500"As the article notes，Here，Write an accompanying configuration troubleshooting of EPON。EPONIt is "Ethernet passive optical network" shorthand，HuaweiMA5680TIs aEPONofOLT，Not repeat them here Related Terms，Default readers have a certain level of knowledge，the following，I'll be brief[……]
The internet
Foreword
This time in preparation for a called "triple play" technology race，The game may be used HuaweiSoftCo9500Softswitch，By learning a few days，I summed up some of the more commonly used troubleshooting commands，Below for some simple examples to explain，These commands are a lot of overlapping content，Routing hope you will choose the most appropriate commands in the actual situation according to their needs。Although the actual[……]
Foreword
The recent start of a aruba AP，That has recently been very fire MSA1100，Although the configuration interface is the CLI，But as a Cisco engage in so many years of hard to force the siege lion mention of course，The advantage is that the AP can fat can thin，Under the so-called family have to say it was business。
model
There are three models MSA1100 system products，But unfortunately，I got this was at the bottom of the 2110A[……]
Scenario Analysis
Many people want to build one of their ownWIFI_WEBCertified Network，The main technology used is Portal (Portal），It can authenticate legitimate users through WEB page。Through this technology to do a certified third-party solutions haveWIFIAP、WIWIZ，Both companies are more representative。According to my investigation，Wah also Portal Solutions，Cisco alone I have not found a correlation[……]
REVIEW
Triple play、Digital convergence、Triple Play is actually said the same thing，But this is different in different regions called Bale。This technology is not China Unicom、mobile、Fusion Telecommunications three communication networks (While it is true that the Big Three has cut constantly tangled lingering，But here's the reason why the variously termed privations，It is to show，This triple play，Nor that triple play。) Personally，Routing'd prefer or triple play[……]
The first run on a Windows systemAll in One的GNS3when，Have a variety of configurations setup wizard，In the testdynamipsWhen prone to "Analyzing dynamips version fails"Prompt，A lot of people stuck in here at a loss。- I have encountered this problem。
Out of the Internet，Find information related to a good few，It was agreed that as long as the installedwinpcapEverything will be fine[……]
NBMAEarly in the CCNA to have contact，Only the name has no concept of，This may be said to be the fault of the translation，After all, the back of his translation did not add parentheses correspond to write about the English name ...... ah，At least not write the full name。so，If I do change itNon-Broadcast Multiple AccessWhen you know，Yes，NBMA is a non-broadcast multiple accessAbbreviation。
Stands fornon-broadcastmultipl[……]
existRSTP (Rapid Spanning Tree Protocol)Learning which，We will know RSTP different fromPVST (Per Vlan Spanning Tree)One of the places，It isPort Roles difference。As different port states believe everyone is familiar with，But the problem of port role，Many books and tutorial included in the classroom are a passing，In retrospect，Students can not help knowing a lot of questions，Let's take a look at this，Among the Rapid Spanning Tree Protocol，How[……]
BGP recently doing exercises，Do the following topology when encountered some problems，This topology is
I configured the network segment：
among them
|
1 2 3 4 5 6 7 8 9 10 11 12 13 |
R1 R1(config-if)#do sh ip int br Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES unset administratively down down Serial1/0 192.168.12.1 YES manual up up Serial1/1 192.168.13.1 YES manual up up Loopback1 1.1.1.1 YES manual up up |
|
1 2 3 4 5 6 7 8 9 |
R2 Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES unset administratively down down Serial1/0 192.168.12.2 YES manual up up Serial1/1 192.168.24.2 YES manual up up |
[crayon-690aff3c3603b[……]
In the EIGRP routing protocol，It does not seem to be able to issue commands directly to the default route，例如default-information originate
That should be how to do it? Here are two common methods：
one、Write a static default route，Then use the command to redistribute default route into EIGRP filling inside，Such routing entry[……]
In the configuration in OSPF，There are portions of the content certification，OSPF authentication is divided into two，They are
- Based authentication area
- Based authentication link (port)
The same time，Authentication mode can also be divided into two，One is plain text authentication，Another is the MD5 encrypted authentication。
Here we do not discuss OSPF encryption method，It is simply illustrative ofRegional links and similarities and differences between these two types of authentication。[……]
OC standard fiber cable is commonly used in today's networks set of standards，Readily not hurt to look at memory。
Optical Carrier (OC) is determined at a level many SONET fiber optic network of a group of signal bandwidth。It is usually expressed as OC-n，among them，n is a multiplication factor，It indicates basic rate is 51.84 Mbit / s the number of times。Currently defined standards：
OC-1 — 51.8 4on[……]
How do network also has a year，Speaking today, a fewAgreement with "arp" in accordance withSome confused old，So I come here to be a simple distinction。
First, that ARP (address resolution protocol)：
This is not difficult to understand，arp protocol used in the computer artTao own MAC address and IP addressin the case of，It used to get the peer IP address corresponding to theMAC address。of course，cross[……]
Some time ago I wroteA simple example Cisco routers DHCP and DHCP relay configuration，Article uses a command to achieve theDHCP forwarding，But this function is exactly how to achieve it? Now let's learn more about this command。
When the terminal equipment andDHCP serverWhen not on the same broadcast domain，Intermediate devices need to specify an address to be broadcast packet forwarded out，That needs to be sethelper_add[……]
Packet Tracer is an auxiliary company published by Ciscolearning tools，Learning courses for beginners to Cisco network design、Configuration、excludeNetwork failureProviding network simulation environment。Users cansoftwareofGraphical User InterfaceUse drag method to establish directNetwork topology，And provide detailed process data packets traveling in the network，Real-time observation of network operation。You can learn IOS configuration、Failure to exercise[……]
Today came across configurationDHCP relayThe problem，Suddenly I found that I had actually not noticed，Even sometimes do not know how to engage，And later I had to Google it very awkward ......，Now recorded as follows：
I was not on the map topology，Simple words to describe：
R1(f0/1)————-(f0/1)R2(f0/0)——S1——PC0
[……]
In the study CCNA related courses NAT Network Address Translation content，When the practice often requires no out a dynamic NAT or PAT address pool
Cisco IOS NAT table as long as the provision of translation entries have included the address of the address pool，You will be able to modify or delete the address pool。
at this time，You enter
(config)# no ip nat pool pool_name
[……]