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Questions tagged [network-topology]

32 questions
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4 answers

Does Wi-Fi traffic from one client to another travel via the access point?

Consider a Wi-Fi network with one access point and two clients, operating in marginal conditions due to range, etc. Client 1 is communicating with Client 2. Obviously the Access Point (AP) must be in range of both (assuming no fancy mesh modes,…
Pete
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3 answers

Layer 2 topology discovery

I have been given a network (it is a LAN) comprised of switches and I need to discover the topology of that. (There may be Link Aggregation Groups (LAGs) in the network as well.) I have done a lot of search on layer 2 topology discovery and I have…
pegah s
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3 answers

How to connect multiple switches together?

I have 4 "NETGEAR ProSafe GS724T Gigabit Smart Switch" that will need connecting to each other. I am not sure of the best way to go about this. Normally, I would just daisy chain them or hook all switches into 1 switch so there is only one hop for…
webnoob
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2 answers

ip level network topology discovery

that's it, is there a way to discover a network topology at level 3 or IP level, i mean, i want to build a program that maps the different networks that are reachable from mine and where the routers are. any ideas? thanks in advance ike
Paulo Bu
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1 answer

Complex DNS resolution on non-connected networks (Ethernet & InfiniBand)

We're having problems with DNS resolution working properly when each server is on two, non-connected networks (an Ethernet and an InfiniBand). An example network can be seen by the basic Visio network diagram When using the FQDN for the AD server,…
Nate
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2 answers

Does 5-4-3 rule apply to stackable managed switches?

We have 7 Dlink DGS-3120 48 ports Gig switches stacking together and all ports are being used. Each switch represents a single segment of our working area. it is working well without any issue. My question is that there is a 5-4-3 rule for network…
Root Loop
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Trace /8 address space with nmap

I'm trying to sketch out a network topology map using the following command nmap -sP -PE -PS22,25,80 -PA21,23,80,3389 -PU -PO -oX topology.xml --traceroute 10.0.0.0/8 (10.0.0.0/8 because no one knows what's on there right now, that's part of the…
fy_iceworld
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1 answer

Guessing how switches are wired together with minimal information

Given a switch S1, I’d like to guess the target port of a switch S2 to which it is wired. I can get their updated Mac Address Table (some say Address Forwarding Table) and that’s all. I can’t enable any CDP, LLDP or any other such protocol. So with…
Martin Pernollet
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3 answers

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 tool, preferably for Mac, but optionally for Windows…
Chris R
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2 answers

Network topology for both direct and routed traffic between two nodes

Despite it's small size, this is the most difficult network design problem I've faced. There are three nodes in this network: PC running Windows XP with an internal WiFi adapter.Base station with both WiFi and a Wireless Modem (WiModem)Mobile…
IndigoFire
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Best way to split LAN computers on two WANs (not load balancing)

What is the best way to split the computers of a LAN (about 50 computers) to go on two WANs, depending on the computers' IP address or computers' configuration (gateway). I'm not looking for load-balancing, I need to be able to route which computer…
lpfavreau
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Can a router have the same ip on both sides?

I intend to implement an interconnected star topology network. For this, I am using 3 routers: Router A, A1 and A2. internet | Router A 172.16.0.1 /16 / \ / \ …
Radu Marinescu
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TP-Link switch redundancy

At the moment we have 12 switches of the type TP-LINK TL-SG1024DE. These switches are connected in serie now, which means when one in the middle goes down that all the others in the chain will loose Internet access. I want to connect the switches in…
Sven van Zoelen
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1 answer

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 could configure bi-directional replication from each…
gdelfino
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Layout for aws services across regions

Looking for a method to evaluate best layout for services across AWS regions. My setup is compromised from 2 endpoint, a server in NY4 and client in Asia. Between them are 2 api hops and a web server. The hops go as follows. NY4--tcp--API1--json…
Dmitry
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