Network Architecture

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Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.

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Are the packets that are used in WAN packet switching protocol  IP packets?
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Hello Experts,

I am looking for feedback on this.

I have client that is expanding and the clients signed a contract for unmanaged wavelength from their data center on premise to the new site office ,  do you know what to expect exactly from the ISP.

The internet access will be from the data center.

Thanks,
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Hello Experts,

I am with a customer and this client has signed an agreement with ISP to provide wavelength connection from their computer room to a remote site.

My question on this is what do I expect from the ISP to do for this client, the agreement is for unmanaged connection.

Can I pass trunk connection from the computer room to the remote site?
Do I need to ask the client to bring his own hardware?

Any feedback will be helpful.
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Hi, first time using VMWare and having problems getting the network to work as expected. I have a HP Proliant server with 4 NICs, I have 2 of these connected to a Draytek 2830n. The server has been running fine with Windows Server 2016 and Exchange. We now have a need to run VMWare using one on the other NICs connected to port 2 of the Draytek but I can't get the VMware Workstation to ping the draytek or get dhcp from it. I have assigned an IP Address to the Host NIC and also to the Virtual one, I have tried bridge connections in VMWare and also custom specific virtual network. On the draytek i have setup vlans and this is connected to vlan 2.

Help please, maybe best to start from scratch with a guide although I have tried following the guides on VMwares website.

Thanks, Peter.
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Hi Experts!

I've been trying to troubleshoot an issue with this setup without success, hopefully you can help me.

With this current setup (diagram attached), I can perform a NAS failover from storage controller SPA to SPB but then I cannot failback from SPB to SPA. During the failback the datastore mounted on ESXi becomes inaccessible, if I failover the NAS again from SPA to SPB the datastore becomes available again automatically.

Here are the scenarios which worked for me, one test at a time:
1) Turning off switch 1, the datastore on ESXi remains mounted, good, turn it back on.
2) Turning off switch 2, the datastore on ESXi remains mounted, good, turn it back on.
3) Failing over the NAS on storage controller SPA to SPB, the datastore on ESXi remains mounted, good.

Here's the scenario I'm having trouble with:
1) Failing back the NAS on storage controller SPB to SPA after a successful failover from the above scenario

I've also noticed that if I leave the NAS server long enough on the SPB I can eventually failback to SPA without issues, but then it reverses path, I cannot go back to SPA. It seems to only failover once, but never failback unless I give it enough time.


Port-channels and vPC are up successfully without inconsistencies.

The switches are Nexus 3k. Storage is EMC Unity.


Any thoughts on what else I can check/test/do? Much appreciated, thank you!


~ Rich



diagram
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We have multiple smaller type ISP providers in the city using microwave technologies.  Basically installing antennas on buildings and pointing to their HQ location.  Trying to figure which one to pick based on their building location, etc.

What's the max distance they can go without the hop/repeater?
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Hi,

I've been given the below from my network team.

192.168.10.0/20 – they've asked me to subnet accordingly and re-address your VLANs with.

Can someone advise what is required

Thanks in advance
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SDN and SD WAN and SD Access and DNA Center

I have read about SDN and SD WAN.  if I understand They both are based on Centralized Control Plane.

So if I have  the Traditional Local Area Network  made up of Access/Distribution/Core   Layers,  and when I want to Implement SDN Technology , at what layer should I integrate SDN.
in other words if there is a hardware on which SDN is installed on, where should that hardware be located ?

SD WAN is WAN Technology , if I want to implement that technology  where should  I put the hardware that holds the SD WAN software.

if you can briefly give the    difference between SDN , SD-Access, SD WAN, DNA Center that might also help clear up the Terminology confusion.

THank you
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Will have new office for around 80 staffs? How can I determine\ estimate the WAN link bandwidth need between the main office and the new office? What's the setup need for the WAN connection?
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Hi Experts,

I create a custom textbox controller.

Imports System.Windows.Forms
Imports System.Drawing
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports ERV_SCREEN_FUNCTION
Imports ERV_GLOBAL_FUNCTION

Public Class ERV_TEXTBOX
    Inherits TextBox

    Implements INotifyPropertyChanged

    Private _Name As String = ""
    Protected lbl As New Label
    Private blnTrimOnValided As Boolean = False
    Private blnUpperCaseAll As Boolean = False

    Private blnOnFocus As Boolean = False 

    Public Event PropertyChanged As PropertyChangedEventHandler _
       Implements INotifyPropertyChanged.PropertyChanged

    Private Sub NotifyPropertyChanged(ByVal intMode As Integer)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(intMode))

        Show_Hide_Controls()

    End Sub

    Private Sub InitializeComponent()

        Me.SuspendLayout()

        Me.Text = ""
        Me.BackColor = ControlColor.Get_LostFocus_Color
        Me.Font = Screen_Function.CreateFont(Screen_Function.Get_Control_Font_Name, Screen_Function.Get_Control_Font_Size, False, False, False)

                Me.ResumeLayout(False)

    End Sub

    Private intMode As Integer = 1

    <Category("ERV Property")> _
    Property Mode() As Integer
        Get
            Return intMode
        End Get
        Set(ByVal Value As Integer)
            intMode = Value

            NotifyPropertyChanged(intMode)
        End Set
    End Property


    Private 

Open in new window

1
There's lot of switches, routers connected by fibre/utp in my company, however there's no network diagram or records about their connection information. How can l know and trace their connection status easily?
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We have total 4 sites geographically distributed. 2 sites have Nutanix HCI solutions deployed and 2 sites have physical servers  Our objective is to build a centralized DR site to serve as offsite backup and being able to failover to the secondary site in disaster recovery situation minimizing the impact to our computing services in the event we lose datacenter. Our RTO is 8 hours and RPO is 1 hour as we are healthcare provider. Hence, our team mates are suggesting to for cloud option.

I would like to have some suggestions on  what cloud solution is better, how does the backup and failover work in cloud option and what would be the architecture ?
0
Hi,
I set up MySQL57 (version 5.7.28), and where can I get same file (in 32-bit) for file below

C:\Program Files\MySQL\MySQL Server 5.7\lib\libmysql.dll

How to verify MySQL 5.7.28 is fine, after the setup?
0
Need some advice on proper Azure Network Architecture.

These are the components we will be using in Azure

Azure Firewall
Azure VPN gatway
Azure VMs for TEST Webservers
Azure VMs for PROD Webservers
Azure Managed Instance of SQL
Azure Managed My SQL
Azure Backup
Azure Load balancer

The starting address space will be AZPRIVATE-VNET 10.0.0.0/8

My initial design looks like this. Im looking for feed back and guidance on properly segmenting the subnets according to cloud best practices.
And any other notes i didnt cover here.

Subnets
AZPRIVATENET-GW 10.0.1.0/24 (Firewall and VPN subnet)
AZPRIVATENET-TESTVMS 10.0.2.0/24 (TEST web servers)
AZPRIVATENET-PRODVMS 10.0.3.0/24 (PROD web servers)
AZPRIVATENET-UTILITY 10.0.4.0/24  ( this will include Managed SQL, AD DC, Load balancer...)

Vnet peering will be setup between them

In addition, TEST and PROD VM web servers will have PUBLIC IPs (im assuming natted, not a second NIC?)


A setup guide for any of above would be very appreciated.
Thanks
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Uplink/Integrate two seperate switch stacks

- We need connect a new Layer 3 switch with VLANS and Subnets into a dumb, legacy switch stack that has a flat network and no VLANS
- Dumb switch has all live devices plugged into it. L3 switch has test devices.
- We need all devices on both switch stacks to communicate with each other.


L3 SWITCH

- Switch 1 (Meraki MS350) has 2 VLANS and 2 subnet
- VLAN 333 and subnet is 10.0.0.0/16, DFG 10.0.0.1
- VLAN 444 and subnet is 10.90.0.0/23, DFG 10.90.0.1
- Both VLANS have been configured to see each other
- Created a Trunk port that is a member of VLAN 333
- Looking to use Trunk port as an uplink port between the Layer 3 and Legacy switch stacks

DUMB SWITCH

- Dumb switch has no VLAN just 1 flat subnet of 10.0.0.0/16
- Flat network is 10.0.0.0/16, DFG 150.120.123.33 (Issued by ISP on port uplink for DHCP requests/IP Helper)

Question

Does the DFG of VLAN 333 need to match the DFG of the legacy switch before uplinking ?
0
Hello guys,

what's the best course to learn about design and build infrastructure?
I am looking for high-availability compute platforms and understand how to build scalable infrastructure.... cloud design principles ... these things as well

Regards
RM
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We are planning to upgrade old fashioned Network infrastructure and this primarily includes deploying new evolving Cisco SDA
The existing infrastructure is having Cisco switches.
The current is design is very simple. It consists of two 6509 Cisco switches as Collapsed core and Edge Switches consists of mixed 2960s and 3560s
Core switches are configured as HSRP Active/Standby and Active Core switch is root bridge for all vlans.

VLANs are segmented  as per department wise and all vlans are configured and spanned through out all switches.

The plan is to:
- Upgrade all switches
- Migrate from traditional network to SDA.
- Prepare

Hence, we need experts here to guide us on above points.
What strategies need to be considered?
How to perform the migration?

Appreciating any help and suggestions
0
We are looking to replace our BCM450 which is operating off of a PRI. Our intentions are to replace this with a Shortel (Mitel) system, and maybe keep the PRI circuits.

Looking for opinions on what people have rolled out for their office phone system and how they like it.

Here are the requirements for our office:
- Office of about 100+ users (each use DIDs)
- Looking to keep the PRI, with option of moving to SIP/VoiP (Hybrid option)
- Have HUNT group features, with multilevel nested call options
- Soft phone feature to use on computers and/or mobile phones
- Voicemail to email functionality (you get an email with .wav file of your voicemail), in-case you are away from the office
- handle analog lines for fax machines
- Vendor that provides good support

Any feedback on what you use today and your opinion on Mitel as a solution would be appreciated.
0
Hi

We had two Windows 2008 physical domain controllers in our network 5 years ago.
One of the IT companies virtualized the network and they built Windows 2012 server and migrated the Windows 2008 domain controller roles to Windows 2012 server (not sure how they did this)

They also replaced our core switches and created different VLANS called, Server VLAN, Wireless VLAN and Legacy VLAN.
Server VLAN Subnet :10.14.112.0/22  
Legacy VLAN Subnet: 10.14.108.0/22

They put the Windows 2012 Domain controllers DC 1 and DC2 on the server VLANs. They also  created another Domain controller called as DC3 and put on this server on the on the Legacy VLAN and not sure why they did this.

Although the DC3 is located on the legacy VLAN, I am able to ping DC1 and DC2 from DC3 and vice versa.

Now I would like to assign an IP from this subnet 10.14.112.0/22 to DC3 and move this DC3 from Legacy VLAN to Server VLAN.

Please let me know if this will cause any problems and is there anything that I need to check before moving this.
Any help and suggestions much appreciated.
Many Thanks in advance !
0
I have the following network and wanted to get your opinion, from a security/network point of view as to what is wrong and what to do about it.security issue
1
I'm looking for recommendations for NTP appliances. We're re-designing their NTP deployment and had initially recommended a hierarchy leading up to pool.ntp.org, but they're insisting on appliances for local sourcing in case of an Internet outage.

They don't need anything fancy (such as GPS), so I'm looking for low-cost recommendations - physical or virtual appliances, very low capacity (probably fewer than 100 devices referencing them). Encryption for local device support might be nice (if relevant). If physical, redundant power supplies would be nice as well.

Thank you
0
Hi,
I want to have one shared place to path of CentOs 7 machine, like the below. How?
\\113.255.213.124\tmp
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Migrate 3-tier app architecture test and production to azure cloud being able to deploy changes to production multiple times per day during peak hours

Anyone can help with high level Azure Cloud diagram with above?
Thanks
0
Hi,
Regarding some other way (like the below), to share file between Linux and Windows
https://www.techotopia.com/index.php/Sharing_Files_between_CentOS_6_and_Windows_Systems_with_Samba

is it possible to access shared path (of Linux) like

\\113.255.213.124\Shared_path

For instance, to back up files into such path, when doing Windows system Backup.
0
HI, we have a customer that uses unmanaged switches and has used all of thir 254 IP address on the local network.
What is the best way to achieve more local IP addresses on the LAN
Thanks
0

Network Architecture

12K

Solutions

11K

Contributors

Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.