We help IT Professionals succeed at work.

Network Architecture





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.

I need a VBScript to find the speed and duplex setting on all installed Network Interface Cards on a Windows Server 2008
Hello Experts,

We have two different lans:


It so happens that with the same App and query LAN A is like 300 % faster tan LAN B

Server in LAN A is even doing virtualization. Dont have technical data of this server since our App only has access to a virtual machine.

Server in LAN B is not doing virtualization. it is an Intel(R) Xeon(R) CPU 3E 1220 V2 @ 3.1 GHz 3.1 GHz  8 Gb RAM 64 bit.

So based on this information, what would you say is the main advantage LAN A has that makes queries of the same App 300% FASTER ?

Is it the speed of the server ?
The speed of the network cards does not count ?
Is it the domain in LAN A ?

Bottom line, What can I do to make LAN B as fast as LAN A ?
Good Day,
I'm looking for some input /suggestions to help with a problem.

Four geographically separate towns have two routers.  The main one for their office and then a 2nd one to operate some sensitive equipment.  The second router plugs into the first and gets it's WAN IP from it.

I want to make the secondary routers connect to each other throughout the towns using a VPN, but I don't think it will work because they are behind private routers.  Then a Laptop for each town should only be able to vpn into it's own town.

So a persistent Office to Office VPN is what I'm looking at doing.

I have included a graphic to hopefully help with the network design.

I'm interested to hear what some solutions might be.
Thank you in advance!
I have to address the status of DNSSEC in the context of a network.  
Now, this is a pretty simple network.
The only "DNS servers" are pass-though with perhaps a cache that's essentially transparent to *me*.
The ultimate source of DNS is our ISP who, I presume, has to have some concern for DNSSEC (so I've asked them).

In the mean time, how do I address DNSSEC for a simple network?
What if some of our computers have hard-entered DNS server addresses like  Does that matter in the context of DNSSEC?
I have created a "router on a stick" setup for my network with the following setup:


Router:  pfSense box with a single WAN and single LAN port
Switch:  Netgear GS724 Layer 2
Wireless Access Point 1:  Linksys E4200 running Tomato Toastman
Wireless Access Point 2:  Linksys E4200 running Tomato Toastman
Wireless Access Point 3:  Linksys E4200 running Tomato Toastman

The network setup:

On the switch:
VLAN 1 = Ports 3=T, 1-2=U
VLAN 10 = Ports 3=T, 4-22=U
VLAN 80 = Ports 3=T, 23=U
VLAN 90 = Ports 3=T, 24=U

Port 3 on the switch is the single trunk to the router LAN port and is tagged member of VLAN 10, VLAN 80 and VLAN 90, and an untagged member of VLAN 1.

On the router:
Default LAN = DHCP from router on subnet xxx.0.1.xxx
VLAN 10 = Home Network DHCP from router on subnet xxx.0.10.xxx
VLAN 80 = Phone Network DHCP from router on subnet  xxx.0.80.xxx
VLAN 90 = Guest Network DHCP from router on subnet  xxx.0.90.xxx

There are outbound NAT rules on the WAN interface for each VLAN that bridges all traffic on each VLAN subnet to the WAN address.  This allows each VLAN to access the internet.

Right now there is also a firewall rule on each VLAN that allows any traffic originated on each VLAN to pass anywhere else.  I did this to make sure that traffic could pass from any VLAN to any other VLAN while I was configuring the network.  Once I finish, I plan to add firewall rules above these to limit traffic …
Hi Experts
Can some help me with Spanning tree protocol as i want to make another vlan the root bridge instead of vlan 1
Is there any possibility to configured Dell switches (5324, 2748 and 2848) and NETGEAR GS748T to VTP (Cisco proprietary) mode Client?

Network configuration:

2x Core Cisco 3560 - VTP mode Server
2x Distribution Cisco 2960 - VTP mode Client
Access switches - mixed with cisco,  Netgear and Dell swicthes - need to be configered VTP mode  Client.

Hello Experts,

I have a telnet access to this switch and I want to know find the command line that will tell me what is configured on a specific port.

I only know the command lines in cisco ios as per below but these work in dell.

show cdp neighbor
show interfaces trunk

I have a port in this switch that is behaving different then the rest.

I have 5 android devices that received ip addresses from an access point. They worked before and I had to install a new access point with the same settings and everything. The devices have trouble reconnecting. I physically was able to connect a few but all except for 1 device is still on the network. Another thing I noticed is  on those 5 tablets it has the same ssid twice. But when I go to advance settings it only has it once. Any suggestions on how to remedy the issue and get them back on the network?

Thank you
Any free software to create diagram of server room?
Hello - this should be an easy one.  A customer has a Cisco Catalyst 6500 VSS pair as their current core, with Layer 2 port channels (MEC) configured for connectivity to all of the distribution closets. All routing is being handled by SVIs on this core pair.

If a new Nexus 7K (or 9K) pair was put in to replace the VSS, and was configured for vPC operation (to be viewed by neighbors as a single chassis, just like VSS), would the neighboring switches need to be reconfigured at all for this?  I'm assuming no, since both VSS and vPC are Layer 2 virtualization technologies. I'm thinking that the connected switch stacks won't see the difference and wouldn't need to be touched.

Please confirm or explain if this assumption is inaccurate.

Thank you
I'm looking for some feedback regarding design options for a data center switching upgrade (and campus core, for that matter). The existing is 100% Cisco, as will be the replacement design. I'm quite familiar with the Cisco product families (both Catalyst & Nexus).

There are two data centers, the primary at the customer HQ and the 2nd at a co-lo facility. There is redundant Gigabit connectivity between the two locations, and it is their goal to eventually start moving additional workloads to infrastructure at the co-lo (into more of an active/active state). This latter point is still being ironed out from the application perspective, as well as DR scenarios utilizing the 2nd DC.  Right now, there is really only storage being replicated to the co-lo, but again the idea is to get 1-2 UCS chassis out there to handle voice server redundancy offsite and for future workload migration.  There is a single UCS chassis in the main location, hosting something like 150 VMs.

The core switching in the main location is a Catalyst VSS pair, and an old 3750 stack at the co-lo. Both are due (and budgeted) for a refresh.  Current traffic/BW utilization across the infrastructure is not a factor in the refresh, so "10-Gig to the closets", etc. is not a concern today, although whatever infrastructure we'd put in would obviously need to support this migration in the future. I'm looking to discuss options.

The easy solution would simply be to upgrade their current design (possibly 6807 …
i'm looking for an ipv6 host in the united states that provides shared hosting, and will provide an AAAA record.... i've checked sixxs.net's list of ipv6 providers only to learn they are dedicated hosts ( more than i'm willing to spend for a website)
I have a midsized church that i am having trouble implementing wireless conctivity through out the church of 200 members when all are present.   What router and ap hardware should I be looking at.  I underestimated what would handle useage for the church  with a standard$60 router and some plug in the wall ap adaptors in the sacturary.....  

I mange a site with about 80 workstation and a few servers. The only subnet is with mask. We are running out of IP's since we have 30 IP phones and 50 IP Phones + all mobile devices, servers and switches.  I thought of putting wireless on it's own subnet/vlan but I will still run out of IP's on the 123 subnet.  I was just thinking of changing the mask on the the main subnet to .  That way I would also have the  IP address on the same network.  We have 3 switches on main floor and one on each other floor. They are Cisco 500 smb switches . I am told if I do this,  it may increase the broadcast packets and slow my network. I thought with all the switches in place and given the size of the network , this should not be an issue.   We have all Windows 7 workstations and 4 Windows 2012 servers.  I can not put the IP phones on another network because they are not cisco and they don't do well on VLANs.

 The alternative is to place a router on the other floors, but I feel like that would complicate things since I would then have to somehow configure the Windows DHCP server to provide IP's to the segments behind the routers and also somehow figure out how to mange the wireless devices with same SSID behind these routers.  Your input is appreciated. Thank you,
Hello everyone!
    I'm currently looking for an application that can help me create a diagram of our company network.  Any suggestion is greatly appreciated.
I want to know what code Facebook is written in.
I have NSX in my environment. My vCenter license has been expired & i need to re-install my vCenter.
The new vCenter will be of the same IP Address of my old vCenter.
In this case will there by any impact to my NSX. Once the new vCenter comes up with the same IP address will my NSX manager will start working or do I need to do any thing additional for my NSX to work.
I have a Cisco 2911
4 Cisco 2960 Switches.

Management IP for Routers and Switches are 192.168.0.X
Virtual Machine Host IP's 192.168.1.X
Cisco ASA 5512 - Firepower -  ASA Interface
                                                Firepower Module -
                                                Sourcefire Database - ( Running on EXSi Host 192.168.1.X )

The Cisco 2911 has Gig0/0 as
                                 Gig0/1 as
                                 Gig0/2 as

I can't figure out with this routing is not working properly between all the hosts and switches and routers.
I want to have the ASA with the 192.168.2.X network to do my VPN into my router for traffic to the VM Machines.

The VM Machines are All on the 192.168.1.X and One Database is on, and the Windows Servers are on

How do I get it from a PC to reach everything that is needed.  Having a hard time.  

Also Cellular0/0/0 has a out to the internet with a static ip.
hello experts. We have a main office in Southern California with a 50/50Mbps connection. I have implemented a virtual cacti box to look at bandwidth at the corporate office and we are very low on average under 10Mbps usually. The satellite office in India which houses a software development team has been complaining of slowness. Unfortunately I dont have any access right now and they have a tech on site Im scheduled to have a meeting with later this week. We look ok on our end.

There is a tunnel set up to the satellite office through our sonicwall for them to access some servers here. Im guessing latency is going to be the big issue. My question is does anyone know a better connection solution besides a VPN tunnel through a sonicwall ?  I know its hard since we dont have access to the remote site to look at their connection but any other opinions is appreciated..
I was told that often or usually network monitoring software is installed on its own dedicated VM. A past regime here created a separate volume on our main file server for the network monitor. I don't think it is necessary to set up a dedicated VM (our network isn't that large), but is it necessary or recommended to keep it on its own volume? Comments on a dedicated VM are appreciated as well.

I'm helping out a buddy who is opening his own law office... 2 people for now. I am the IT guy for a 50 person company, and we have (all rack mounted) a firewall, a unmanaged 48 port switch (with multiple 5 port switches here and there throughout the office to gain extra ports), 7 servers, a VPN appliance, etc. I want to put a list together for him of what gear he needs to get, but I realized that my point of view may be overkill for what he needs.

Is there a good all-in-one firewall/unmanaged switch/wifi access point on the market? I don't want to make him get a rack, so i'm thinking that a sturdy table top device would be good.
My router is peering with my MPLS ISP CE router. I am running OSPF in my internal network and EBGP with my ISP. I want my ISP to advertise his default route via BGP to my router. I will then redistribute his default route via OSPF to my internal network.

My ISP MPLS CE router has a default route IP ROUTE nxt_hop_ip. They have REDISTRIBUTE STATIC in his BGP process. I did not test this yet, but will this work as how to advertise the default route to my router? Or does he need to have NETWORK MASK in his BGP process.

Also, I'd  like to redistribute just his BGP default route to my OSPF. It looks like, in my BGP to OSPF redistribution, I have to filter out all his BGP routes and only except the default route. How do I do that? Thanks
I have two TP-LINK MC210CS media converters.  They are connected via single mode fiber that runs between two buildings and when connected the link light (FX) lights fine.  On one end, the media converter is connected via CAT6 cable into a network switch. On the other end we have tried connecting directly to a laptop and also to a switch and we are unable to get connection on either.  They are both exactly the same model and we have the switch in “force” mode.  We are using C2G SC-SC 9/125 duplex singlemode patch cables.   I have also tried connecting the two media converters together with just the patch cable and directly into the switch but not having success.   Any ideas?  Fiber is not my expertise....
We currently use MPLS connecting three facilities among three states in the US. The MPLS we use is provided by the same ISP. My company is in a mode of acquisition so in the future we may acquire a new facility where our current ISP don't/can't provide the MPLS whatsoever. So my question is, is it possible to use MPLS via different ISPs ?

Network Architecture





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.