Network Design

Designing Network involves different steps, procedure and methods. I will talk about the first two section in this post, see other following post for the renaming:

1. Organizational Policies & Procedures
2. Essential of a Flexible Network
3. Network Design Method (PDIOO)
4. Design Process – 8 Steps

Organization Policy Cycle

An organizational policy and procedure is a collection of specific guidelines and rules in written form that are understood, implemented and maintained at every level of the organization for the purpose of reaching well-defined goals.



Guidelines for Organizational Model

Logical – Mirror the ecosystem.
Incremental – start small but think big
Horizontal – Get constant input from stakeholders
Manageable – Implement Control and access mechanism
Critical – Implement core application first
Exceptional – look for cutting edge solution


Network Infrastructure Essential

1. Availability: This means there should be Resiliency in your network, Redundant and 24/7 available
2. Efficiency: Best equipment, Services, Software, AAA, Queuing etc
3. Functionality: Like .net – so we have sufficient bandwidth for the application
4. Manageability: e.g. SNMP, Maintain performance, Security etc
5. Performance: you get what needed
6. Scalability: Future expansion

Designing: Access Layer – Distribution Layer & Campus Backbone

While preparing for my CCDA and CCDP, I came across with these information. I hope it will help you :)

Access Layer

1. Current & future needs for users or node ports
2. Can your company or client afford modular Cisco units
3. Is the existing cabling UTP adequate?
4. Can you afford to move to MM fiber?
5. Performance and Bandwidth requirement
6. Redundancy? & up to which level it is needed &/or Required
7. VLAN, VTP, STP or RSTP support requirement?
8. Layer-2 traffic pattern, Multicasting & QoS?

Distribution Layer

1. Layer-2 switch adequate? A Layer-3 switch?
2. Total user do you support? Or have to?
3. Do you need high availability?
4. Do you need distribution switches, modular & scalable?
5. What type of intelligence service like QoS, Security, IP Multicasting etc
6. Are you prepare for manageability and configurability
7. Are advance features need to be implemented like RSTP, MSTP, Backbone fast or Uplink fast.

Campus Backbone

1. Do you have three or more building connected through enterprise campus infrastructure?
2. Is your solution L2, L2/L3 or L3 throughout the network?
3. Are you read for high performance, multilayer switching?
4. Does your customer want to simplify and lower the number of links between distribution layer switches and server farm/edge distribution modules?
5. What are the performance needs?
6. How many high capacity links/ports do you need?
7. What are the high availability/redundancy needs?

I Hope this will be informative for you :)

Service Provider General Tasks

Service Provider General Tasks

Virtual Switching System

Virtual Switching System

Enable the Hidden Administrator Account on Windows-7

I was trying to install Mozilla Firefox on my laptop. When i try to install it shows me a mesage "install with Administrator account". I try to install with my account which is Administrator of Laptop but still it says "install with Administrator" and I stuck as i haven't use/seen any Administrator account. After that i search on google and came to know that it's hidden and not enable by default, so we have to enable this account on windowns-7 machine. Here we go :)

1. Go to Command Prompt

2. c:\> net user administrator /active:yes
The command completed successfully

3. The above line shows the successfull result.

4. Now you can use your Administrator account.

I hope this will be informative for you.

Cheers :)

Huawei Basic Commands

Hi Everyone !

I don't have time to talk about the basic commands of huawei, i will talk about the details stuff of it. If one is use to with cisco so he/she will not face any problem in understanding Huawei. I got this site with having the basic commands for huawei. If you want to study so look at Mariusz Stola

I Hope this wil be informative for you !

Cheers :)

The SERDES Module on Subcard NP-3 1 is Failed

I got this problem in our network on one of our NE40E. Before going to the troubleshooting section, I just need to go through the impact of th above problem on a system. Actually we have three groups of SERDES on NE40E i.e. 0,1 and 2 on the LPU. These SERDES are plot on sub-card 0 and 1. If we have problem on SERDES 0 it will not effet the services on SERDES 1 and like wise.

The problem cause can be identifed by checking the clock of SERDES module. The above problem can result because of:

1. Sub-card-1 not prooperly connected to LPU
2. Sub-card 1 is faulty
3. The Port is not configured correctly
4. The connector between the Sub-card and LPU is faulty
5. The optical module is faulty

Solution

1. We have to check wheather the sub-card ETH_xyz_abc_CARD is registere by using the following command.

display device pic-status

2. If it is registered, then we have to replace our optical module.

3. If Optical module is working normal then plug out from the existing sub-card and plug-in in another card. For Example from Sub-Card 0 to Sub-Card 1.

4. Now again verify by using the above command and collect the trap information.

display trapbuffer
terminal monitor

I hope this will be informative for you.