Network Analysis

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Network analysis is the process of identifying and remediating the processes and systems within a network, including performance, connectivity and security. The process is performed through the use of tools developed for monitoring and analyzing network activity. Network problems that involve finding an optimal way of doing something are studied under the name combinatorial optimization. Examples include network flow, shortest path problem, transport problem, transshipment problem, location problem, matching problem, assignment problem, packing problem, routing problem, Critical Path Analysis and PERT (Program Evaluation & Review Technique).

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I am looking at the config of my L3 switches and I see that they have the static route to null0:
ip route 169.254.0.0 255.255.0.0 Null0
ip route 172.16.0.0 255.255.0.0 Null0
ip route 192.168.0.0 …

724 views
VMware Disaster Recovery and Data Protection
VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

I am just wondering what can cause a network loop even though stp is enabled?

1034 views

I'm trying to compare the top best Next Generation Hardware Firewalls mainly to have the following features(for 100 users),
Router(NATing)
Bandwidth Management
Content filtering
Block by …

545 views

I have this lab setup below. The goal is to have 10.10.10.200 be able to ping 10.10.10.1 via EIGRP. So I was trying to NAT 10.10.10.200 to 10.20.20.200. But it does not seem to work.

 
(CODE)

625 views

Hi all,

We have an issue with when using certain internet programs.  Webx, GoToMeeting, Spybot Search and Destroy, Malwarebytes all are unable to connect or update.  All other functions work of the…

436 views

I am adding a new route-map MY-FILTER to my Cisco switch config. But I see that I already have another route-map MY-ROUTE-MAP. Both route-maps have the PERMIT 10 but they are calling different ACL. …

119 views

My friends had a video chatting conversation through fb messenger on their android phone. Both devices are free of malware. One is connected to a WPA2 personal wifi and the other is on cellular 3g …

1560 views

I have a connection between 2 sites and I am using 2 SVIs /30 to advertise my EIGRP routing. Everything works fine. Site A can see subnets from site B and vice versa. Now I have one subnet (configured…

138 views

I currently have the PBR below only on the SVIs at the core switch that forces the users on vlan20 10.10.20.0 to use FW2:
access-list 20 permit 10.10.20.0 0.0.0.255
!
route-map PBR20 permit 20
 …

125 views

As I understand it, some SIP phones and conferencing equipment has built in connection quality analysis but in this case, nothing being used seems to have such capabilities I'm told. That isn't the …

851 views
What is SQL Server and how does it work?
What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Hi All.

I have a computer network with 45 HP laptops., All are using docking stations, screen and keyboards and mouses. There is not Server in our company and all laptops login into a Server using …

331 views

Dear Experts,

How I can download log file from Cisco switch ?

sh archive log conf all ( for catalyst switches)
show accounting log (for nexus switches)

thanks

144 views

In my network diagram below with all Cisco gears, I am trying to advertise 10.10.50.0 via EIGRP on ESW3 but it does not seem to work. 10.10.50.0 is not defined as a SVI on ESW3. It is a lopback IP …

631 views

I have a couple of static routes and a default route. Is it possible to redistribute just the static routes and not the default route (ip route 0.0.0.0 0.0.0.0 next_hop). Thanks

536 views

Our gateway used to be the firewall and was changed to another device on the network - how can we determine what switch, router, etc is acting as our gateway?

451 views

Hello i need an advice about monitoring internet usage in our company. We want to use some monitoring software to monitor internet usage:
1. Active time spent on internet.
2. The amount of data …

535 views

Hi Guys,
We are experiencing service quality issues at different times of the day, and I need to measure the quality of our Internet service in a way that allows me to determine where is the exact …

249 views

My virtual server resides on site A and the ~ 500 devices reside in site B. Currently, they are connected via a trunk but soon, the trunk will be migrating to a layer 3 with point-to-point VLAN /30 IP…

31145 views

My question is based on the attached net diagram. I have layer 3 at my uplinks in the ring, except sw1 and sw2. This is where I am wondering if I should leave it a layer 2 between those 2 switches …

1087 views
Microsoft Certification Exam 74-409
Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Most of my network resources is being used by one process which I don't know what it is, see attached. Please help (The image is taken with low activity buy with normal activity it max all the way …

1274 views

Are Martian Packets automatically monitored in syslog or must you set up a script/program to record them in UNIX.

Solaris 10.5

551 views

People,

Can anyone here please assist me in what tool can I do to scan which IP address is the web management console or SSH port for the managed switch ?

I have to audit each IP address subnet …

13132 views

verizon fios residential internet so i am limited and do not want to create evil twin access

2 computers windows 10 both with wireshark installed

i want to see traffic from other devices …

859 views

We have an old PowerConnect 6248. Is there any way to put this switch into "unmanaged mode?" I checked the documentation but the word "unmanage" doesn't appear there.

5105 views

Hello,
       We have recently seen many entries in our Sonicwall log that states"Possible RST Flood on IF X0" and then extends to the ip of the source. The internal ip is coming from our Barracuda …

6519 views
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