GNS3 – Cloud Interface Trunk

After adding some network adaptor (DUB-E100) on my server to make the trunk available for my 3 sites , DOT1Q was not able to work on the config …. Damned I figured out at this point that I could pass my vlan over this link .

After more troubleshooting and thinking, I came to the point to enable ISL instead of DOT1Q , and after this my trunk was really up and useful as it passed now the vlan information ….. woohoo .

Can continue right now on implementation ….

🙂

CTI Route Points and Ports – Partition and CSS Approach

Pay attention that normally the order of the partitionins is always L1,L2,L3, D1,D2,D3 , where Lx are the partitions assosiated to the Line model and Dx are the partitions associated to the Device model.

So this order will give you the order/ priority in case of tie-break !

In the case of CTI Route Point or CTI ports , the order is changed by the following D1,D2,D3,L1,L2,L3 …. Please recall this if you are involved in a troubleshooting with these elements !

Windows 7 – Firewall issue with GNS3 routers

Hi,

When I have connected my routers defined in GNS3 with a cloud pointing to my network card . HQ was able to access my LAN because it shares the same LAN .But in my Frame-Relay WAN , even if  I have all the networks in my routing table , it is impossible for a Branch location to ping something on the real network where you have Windows 7 or Windows Vista machines.

So after some reseach, I have found this interesting note: http://www.howtogeek.com/howto/windows-vista/allow-pings-icmp-echo-request-through-your-windows-vista-firewall/

Even if it is related to Windows Vista and even if you have some warning , it is applying this little patch. When , you apply under the DOS prompt the following command : netsh firewall set icmpsetting 8 enable . It will create depending on your topology  a new rule inside the Firewall “Networking – Echo Request(ICMPv4)”. This rule will be enabled.

In case if you want to revert your manipulation , as the command to revert back present in the previous document is not working , go then top the control center and find the previous created rule or rules and disabled it …

With this patch , you can enable your Windows 7 to icmp request.

Operations and Network Management Tools

Here are a list of the different tools that you can use :

  • CDR Analysis and Reporting tool (CAR) : is used to generate CDR reports and so on
  • DBHelper : is used to fix SQL replication issue
  • Dialed Number Analysis (DNA) : is used to analyze your dial plan
  • Dick Tracy : is a catalyst troubleshooting tool
  • Event viewer : Windows system tool to see application, system and security events
  • Perfmon : Windows system tool to see and monitor counters in real-time
  • Q931 Translator : it is a tool to decode Q931 messages of the ISDN/H323 stack
  • Quality Report Tool (QRT viewer) : it is a reporting tool for quality purposes
  • Real-Time Monitoring Tool : is an extended plugin which can view Call Manager Serviceability counters in real-time
  • SDI Traces : CCM traces which provide detailed diagnostic information relative to call processing , registration,digit analysis, call flows and all protocols related and so on
  • SDL traces : These are traces which are the transition levels between all nodes. It is essentially used by the tac
  • SQL Enterprise Manager : it is the SQL console tool

Store-and-forward Fax

Store-and-forward fax on IP networks operates like email and so can deliver to servers or remote fax.

T37 is the ITU standard for store-and-forward fax transmissions.So a fax is converted into a TIFF attachment and sent to the network (it is the onramp gateway).Then the TIFF is sent to a server or an offramp gateway.

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