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Questions tagged [topology]

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Optimizing CPU and Memory use on Multi-socket NUMA server

I am building a server that will be used by interns in my company to connect to and perform some tasks. The server is running AlmaLinux 9 and using KVM to run Windows 11 guests. The server has 2 CPU ...
Fabz's user avatar
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1 vote
1 answer
372 views

NMap Topologie missing Switches (no kind of Topology)

I did scan some of our Networks but for any reason NMap doesnt applies any kind of topologie. It seems like there is everything connected directly but there are switches in between and those ...
Kevin's user avatar
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28 views

How to have a single domain name for multiple geographically limited 1 to 1 mapped client to database + webserver instances?

Say I have a client (a business, not a consumer) in US, for whom I set up a specific webserver + database instance in US. Only this db instance has this client's details. And suppose I have a client ...
Srikanth's user avatar
  • 101
0 votes
1 answer
183 views

LAN cable operation to switch internet line on L2 SW cascade connection

We have 2 internet lines A and B, and 2 independent network segments on the lines. All PCs are connected to L2 switches (SWAA, SWAB, ..., SWBA, SWBB, ...), and the switches are connected to another ...
user3340361's user avatar
0 votes
0 answers
111 views

What routing/topology protocol(s) should be used with P2P devices with sporadic, changing connectivity?

I have several IoT devices that will sporadically come into and out of range, and connect in a partial mesh topology. For illustration purposes, imagine the interconnectivity of a Web of Trust, or ...
makerofthings7's user avatar
0 votes
2 answers
98 views

Network Topology Connections

I have recently started a new job, so have inherited a network.  I have attached the network topology that I have inherited (link at bottom of post). Switches 1, 2 and 3 are in the same building.  ...
Graham Newman's user avatar
1 vote
0 answers
1k views

Invalid SAS topology

I have a 44-bay Supermicro JBOD which is connected to a MegaRAID 9280-8e. Upon boot, all drives show activity and the device scan reaches 100%. Then however, an eror message states: Invalid SAS ...
Michael's user avatar
  • 300
1 vote
1 answer
510 views

CouchDB replication recommended topologies

I am working on a proposal for a system with seven CouchDB servers (A,B,C,D,E,F,G) in different countries. The idea is to configure multi-master replication so that all data can be kept in sync. I ...
gdelfino's user avatar
2 votes
1 answer
2k views

Can not add static route in my Ubuntu, SIOCADDRT: Network is unreachable

I'm trying to add a static route in my VPS to a client that is on the other side of the VPN tunnel to my VPS and forwards it's traffic through the tunnel. This is the setup of my destination that I'm ...
Bahador's user avatar
  • 21
2 votes
3 answers
2k views

Best practice for using multiple links between switches when link aggregation is not supported?

I have a half-dozen servers and workstations in an office. The systems are connected to a Cisco SG200 gigabit switch in the room. The room has two gigabit wall-port ethernet outlets. I have the switch ...
mhucka's user avatar
  • 699
3 votes
0 answers
576 views

How to get the topology of a layer-2 switch network with the switches' forwarding tables?

Suppose I have a list of layer-2 switches that do not support LLDP (Link Layer Discovery Protocol) but support SNMP. I have the management IP addresses of these switches, but I don't know how they are ...
F32's user avatar
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1 vote
0 answers
541 views

Is there a way to setup alerts for a failed DFS topology connection?

I have a large DFS structure setup between multiple remote sites and multiple hub servers in a full mesh topology. Each remote site has its own namespace or namespaces and replication group. I have an ...
Dave H.'s user avatar
  • 125
3 votes
3 answers
138 views

Does using a peer topology mitigate the risk of server failure?

My client manufactures a medical device that takes various measurements of a given sample and writes the results to a database. The amount of data generated is relatively small. In the current ...
Sam's user avatar
  • 133
2 votes
1 answer
332 views

What servers do I need to set up the following simple scenario? [duplicate]

I've founded a start-up recently and am about to add a little structure to it, regarding management, communication and data. I am a software developer and do not know any details about server ...
Marc's user avatar
  • 141
0 votes
3 answers
2k views

Websphere ND Dmgr - Application Server collocation advantages and disadvantages

In a Websphere Network Deployment Architecture, what would be the drawbacks of collocating a deployment manager server with one or more managed application servers on the same host? In other words, ...
trikelef's user avatar
  • 528
1 vote
3 answers
1k views

Several border firewalls in the same network [closed]

I'm currently analyzing the consequences of multipath connections for the firewalls. In that context, I'm wondering if it's really uncommon to have several firewalls at the borders of a network to ...
nimai's user avatar
  • 153
2 votes
1 answer
183 views

Windows 2008 Domain Multiple Sites/Subnets What Should Be Considered

I am currently setting up a remote office that will be connected to our HQ via a P2P connection. We leverage a Windows AD Domain, and I wanted to know what would motivate someone to migrate from a ...
JPrescottSanders's user avatar
0 votes
1 answer
478 views

Revealing neighbors via SNMP on cisco switches

Is there a common way to obtain information about neighboring devices from a cisco switch, provided that we're using SNMP, and CDP is completely off? I may be on a totally wrong track here, so I ...
etranger's user avatar
  • 101
0 votes
1 answer
267 views

Network structure and topology advice

As per a few prior questions - I am in the process of splitting a server with a variety of role into individual servers with one role per server. I have now got the following servers/roles setup: ...
dannymcc's user avatar
  • 2,737
1 vote
3 answers
5k views

MySQL in star topology

I have one central database with all the data in MySQL 5.1-lastest-stable. I want to hook up multiple clients in a master-master relationship. Question How do I setup a star topology with 1 central ...
Johan's user avatar
  • 322
7 votes
1 answer
4k views

Looking for a tool to plan network/vlan topologies [closed]

I'm looking for a tool (desktop or web-based) that we can use to plan our network topologies using VLAN's. Something capable of defining switches, and mapping VLAN's to the ports and allowing use to ...
Kenneth Kalmer's user avatar
5 votes
5 answers
36k views

What is the best network design for a new multi-floor building?

Specifics: 4 floors. Floors consist of central cubicle area and exterior offices pre-wired to wiring closet on each floor. IT data center will be located on 1st floor Conduit exists in building ...
Kevin Kuphal's user avatar
  • 9,184
2 votes
3 answers
382 views

What software exists to map a network?

We have an internal network that can be -- at best -- described as a bit baroque. More and more of it is known, but the structure is not clear and not well documented. What I'd like is a graphical ...
Chris R's user avatar
  • 533
0 votes
1 answer
292 views

Design of a hosting network

I am sketching a network design for a KVM hosting site, preparing for hundreds of virtual guests. In our current design, every customer (no matter if physical or virtual) reside on their own VLAN to ...
3molo's user avatar
  • 4,360
2 votes
3 answers
352 views

network topology including many services

I know this is yet another question on how to setup network but I hope you are not bored of such questions yet. The site is also an office, so it includes windows dc, windows ad, exchange, sql, file ...
mete's user avatar
  • 157
3 votes
3 answers
1k views

Ethernet: network topology

Consider a standard GigE network switch. In order to do the switching, presumably it needs to maintain a map of MAC addresses of all things that exist on the network to its (switch's) port numbers. ...
NPE's user avatar
  • 689
8 votes
1 answer
1k views

Best practice for Exchange 2010 HA topology considering 6 x Exchange licenses and TMG 2010

What would be best topology considering that: 6 x Exchange 2010 Standard Licenses 2 x Separate locations that are supposed to support redundancy in case of link problems 4 x Forefront TMG 2010 with ...
MadBoy's user avatar
  • 3,835
3 votes
5 answers
12k views

How does my browser know where to get data from a server?

This very well may not be the correct forum to post this sort of thing on but its a question that's baffled me for years. I'm very well aware of how servers themselves work and am fairly well versed ...
castis's user avatar
  • 175
-1 votes
2 answers
11k views

What is the best network topology for a small sized school network?

We've already implemented an extended star network with a central server but we were wondering how we can improve it.
Alexander Suraphel's user avatar
2 votes
1 answer
256 views

Consumer board for 4* commodity cluster in tetrahedral back-to-back GB-lan topology

I'm not very sure what consumer board to choose for such a configuration. Im planning to build one or more "Beowulf-like cluster" (starting with one for testing), one such cluster consists of four ...
rubber boots's user avatar
0 votes
3 answers
337 views

Does it makes sense to use a single physical box in both DMZ and Secured Zone

I was sitting in a presentation where I was told it is ok to have a physical box (virtualized into two) where one resides in the DMZ zone and the other resides in the secured zone. I found that such ...
Manglu's user avatar
  • 127
0 votes
2 answers
114 views

How Packets are absorbed in a ring connection?

In a bus topology you have a terminator which absorbs unused packet(noise).What happens in the case of a ring topology?
user avatar
0 votes
1 answer
150 views

Microsoft Forefront Management Gateway 2010 - Which topology to choose for monitoring only server?

I've installed Forefront and wanted to use it as monitoring traffic solution until we decide to put it as a router. I've 2 nic's assigned to this virtual machine. One NIC has connected port which is ...
MadBoy's user avatar
  • 3,835
0 votes
2 answers
4k views

How do ring and bus network connect to router?

Sorry this is probably a very silly question, but for some reason i am confused. How does a LAN with bus or ring topology connect to a router and other LANs? For example in a star network they all ...
user avatar
5 votes
3 answers
25k views

How to request/acquire all records from a DNS?

I want to see what nodes exist under a certain domain from within the domain. Short of querying every valid IP address within that domain, is there a way to get all records/map the network?
Ritwik Bose's user avatar
2 votes
1 answer
668 views

MySql Replication with a star topology

My company currently operates in 3 separate locations connected by slow vpn links. Each site hosts a dedicated MySql server. I need to aggregate the data from all three of them onto a single server ...
Riotopsys's user avatar
1 vote
0 answers
741 views

Setup MSSQL replication with peer to peer topology: problem setting up Conflict Detection

I'm setting up a SQL Replication strategy, using MSSQL2008 with peer-to-peer publications (2 servers, each one subscribes to the other). I followed this HOWTO from MSDN, and the setup seems to be ...
RoelF's user avatar
  • 113
4 votes
2 answers
228 views

Programmer configuring a new network [closed]

I'm in the process of expanding my home network from a couple of laptops on a wireless Verizon FiOS router to include: Linksys 24-port switch Cisco Pix 515 Cisco 3640 router One new development ...
3Dave's user avatar
  • 161
1 vote
1 answer
50 views

Challenges w.r.t. proximity between application hosted outside Amazon and Amazon persistence services (SimpleDB & S3)

This is about hosting a web portal. Earlier my topology was entirely based on Amazon AWS but the price factor (especially for EC2) now makes me re-think. I'll now quickly come to what I have ...
Kabeer's user avatar
  • 205
3 votes
5 answers
2k views

Are token-ring networks still in use? What products are available?

I'm looking for some materials on current usage of token-ring network? Is there any token-ring device in the market? If there is, what are the names?
Jichao's user avatar
  • 3,087
5 votes
2 answers
539 views

Tool or IconSet to visualize network topology

I'm looking for a tool or IconSet do create a picture of a network topology. The network doesn't exist, so I don't need a tool that scans a network and creates a picture of that network. It would be ...
Chris Boesing's user avatar