Network Management Software - LAN Management Soultion

Cisco Works Lan Management Solution :

    The need for computers in this world are increasing day by day and the most important things is to have a connection between these computers so therr is need for network devices like switches , Routers and Firewalls.
    The toughest job for Network Administrators is to administrator all the network devices from one place. Cisco systems has come with an solution called Cisco Works LAN Management Solution which is a software used to managemt and troubleshoot network devices.

LMS 3.2 Features :

1. Campus Manager
2. Common Services
3. Device Fault Management
4. Health And Utiliziation Monitors
5. Internetwork Performance Monitors
6. Resource Manager Essentials

ASA Firewall

Hi Readers ,

           Today i am going to post about the Security Appliance ( i.e Adapative Security Appliance )

Cisco Develops Security appliance for all kinds of customers vary from small , medium sized to large organizations.

Various models of ASA firewall :

1. Cisco 5505

2. Cisco 5510

3. Cisco 5520

4. Cisco 5540

5. Cisco 5550

6. Cisco 5580

7. Cisco 5585 X

Functional Overview of a Firewall :

Firewall Mode :
a. Routed Mode -
     
b. Transparent Mode -

-> A transparent firewall, on the other hand, is a Layer 2 firewall that acts like a "bump in the wire," or a "stealth firewall," and is not seen as a router hop to connected devices.
-> Layer 3 traffic, such as IP traffic, cannot pass through the security appliance unless you explicitly permit it with an extended access list.
->  The only traffice can pass through transparent firewall is ARP traffic which can be controlled by arp inspection
  

Differnce Between HSRP and VRRP Protocol

 I hope this blog will be usefull to those who want to understand the difference between HSRP and VRRP.Both the protocols are widely used by Network professional to achieve gateway load-balancing .The More about these protocols are listed below.

HSRP :
->  HSRP stands for Hot Standby Routing Protocol
->  Cisco Properiotity Protocol
->  Preempt is diabled by default
->  HSRP Router terms Active Router, Standby Router

VRRP :
->  VRRP stands for Virtual Router Redundancy Protocol
->  Open Standard Protocol
->  Preempt is enable by default
->  VRRP Router terms Master Router, Backup Router

Dell Sonicwall - Interview Questions

Hi readers ,
     This time i would like to share another interview experience of mine in my blog

Company Name -  Dell Sonicwall
Job Title             -   Network Security Engineer
Work Location   -  Chennai
Interview Mode  -  Telephonic

1. Can you explain about you , your educational background and Technical Background ?
2. Explain about DHCP process ?
3. What is the use of ARP Protocol ?
4. scenario -  There are two brand new systems with windows seven operating system .In one of the system      
    i have created a file and saved it to the desktop. Now my question is what are the minimum software and  
    hardware requirments required for me to get the file in another system.
5. What do you mean by proxy ARP ?
6. What is mean by SSL Handshake ?
7. what is the difference between STP and RSTP ?
8. Can you explain about VPN ?
9.  What is mean by TCP Handshake ?
10. what is mean by iterative query ?
11. Scenario -  In a router there are two routing protocol EIGRP and OSPF , by default the router will
      choose which route .

What happens when the Environment Temperature of the Cisco Switches Exceeds the Threshold Temperature

Hi everybody today i will share my knowledge about what will be the problem for the cisco switches if the environment temperature exceeds the Normal Operating temperature.

I will show how to check the Environment temperature details in cisco catalyst switches cisco 4507 and 6509 series.

Commands you should use to check environment temperature details are
1. show environment status.
2. show environment temperature.

Below are the ouput you will get if you type these commands in cisco switches
switch_4507>show environment temperature
Module    Sensor                       Temperature                   Status    
------+--------------------------+--------------------+------------
3             air inlet                   36C (51C,65C,68C)              ok
3             air outlet                 43C (69C,83C,86C)              ok

switch_6509>show environment temperature
VTT 1 outlet temperature: 23C
  VTT 2 outlet temperature: 25C
  VTT 3 outlet temperature: 29C
  module 1 outlet temperature: 41C
  module 1 inlet temperature: 24C
  module 1 device-1 temperature: 24C
  module 1 device-2 temperature: 39C
  module 1 EARL outlet temperature: 34C
  module 1 EARL inlet temperature: 29C
  module 2 outlet temperature: 39C
  module 2 inlet temperature: 24C
  module 2 device-1 temperature: 24C
  module 2 device-2 temperature: 37C
  module 2 EARL outlet temperature: 29C
  module 2 EARL inlet temperature: 28C
  module 3 outlet temperature: 37C
  module 3 inlet temperature: 26C
  module 3 EARL outlet temperature: 26C
  module 3 EARL inlet temperature: 27C
  module 4 outlet temperature: 39C
  module 4 inlet temperature: 25C
  module 4 EARL outlet temperature: 26C
  module 4 EARL inlet temperature: 27C
 --More--          module 5 outlet temperature: 25C
  module 5 inlet temperature: 21C
  module 5 device-1 temperature: 29C
  module 5 device-2 temperature: 30C
  module 5 asic-1 temperature: 20C
  module 5 asic-2 temperature: 20C
  module 5 asic-3 temperature: 20C
  module 5 asic-4 temperature: 20C
  module 5 asic-5 temperature: 20C
  module 5 asic-6 temperature: 20C
  module 5 RP outlet temperature: 23C
  module 5 RP inlet temperature: 24C
  module 5 EARL outlet temperature: 28C
  module 5 EARL inlet temperature: 22C
  module 6 outlet temperature: 25C
  module 6 inlet temperature: 20C
  module 6 device-1 temperature: 29C
  module 6 device-2 temperature: 29C
  module 6 asic-1 temperature: 21C
  module 6 asic-2 temperature: 21C
  module 6 asic-3 temperature: 21C
  module 6 asic-4 temperature: 21C
  module 6 asic-5 temperature: 21C
 --More--          module 6 asic-6 temperature: 21C
  module 6 RP outlet temperature: 23C
  module 6 RP inlet temperature: 24C
  module 6 EARL outlet temperature: 28C
  module 6 EARL inlet temperature: 22C
  module 9 outlet temperature: 30C
  module 9 inlet temperature: 30C
  module 9 device-1 temperature: 25C
  module 9 device-2 temperature: 28C