Questions tagged [network]

For questions about Networking that includes design, and use of a network, the physical cabling, hub, bridge, switch, router, and so forth. Anything in relation to networking and its technologies.

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1answer
27 views

What is a substrate network?

Actually I am reading a paper for school homework. This paper is called : "JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services". They use the term "substrate ...
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0answers
9 views

Cannot Change MTU size after few values [on hold]

I'm trying to change the value of MTU to test network fragmentation, OS : Windows 10 Pro When i try to lower it it says The parameter is incorrect C:\WINDOWS\system32>netsh interface ipv4 set ...
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3answers
39 views

Connecting 2 buildings on same site via fiber

If I have 2 buildings on the same site, connected to each other via a fiber connection and they both run to the same ISP, would both buildings need to be connected to a firewall? For the main ...
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0answers
11 views

Display running process of computer in LordPE [on hold]

I don't know that can I ask question about this problem in here?.I tried download and install some version of LordPE,but when I open LordPE then no program that running displayed in LordPE I hope ...
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0answers
4 views

Connect system using hardware [on hold]

How can I connect two laptops and take complete control of other machine using hardware device connected to same wifi network
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0answers
17 views

How can I change my IPv4 address? [on hold]

Specifically the one that shows up when visiting https://www.whatismyip.com/. It looks something like this: 75.37.58.xxx. I am using AT&T Uverse. I have tried unplugging the router overnight and ...
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0answers
12 views

Saved network automatiucally replicating to other interfaces in windows 10 [on hold]

I have 2 wireless interfaces one in built in that is used by the system to access internet and the other one is connected to a micro-controller ESP32 board that i am working on . But when i put ...
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0answers
9 views

I'm planning on building a SaaS for Latam. Which server locations would make more sense? [closed]

What would be the best choice when it comes to selecting a CDN for Latam? AWS CloudFront in Brazil maybe? There is also Google Cloud, Azure, Akamai, CloudFlare, etc. I think what I'm trying to find ...
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0answers
11 views

Cisco ASA Security Warning: Untrusted server cert after asa crash and reload

We have Cisco ASA 5505 working VPN anyconnect and it's been almost 1 year no issue, but last week it got crashed and reboot itself and after that we found it started throwing warning like following: ...
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0answers
10 views

Setup Brand New OpenVPN to allow LAN Connection [closed]

So i'm new to openVPN, after setting it up, and connecting between client - server , i need both to allow LAN connection So my setup is as follow (as for now) Client is set on the 192.168.1.X ip ...
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1answer
21 views

Strict source routing using my own scattered PCs/ routers

I would like to completely control my network transportation by defining the packages path. According to this I can't do it unless I have control over all the PCs/ routers in its way. Suppose, I can ...
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1answer
53 views

new SFP network for newbies

I never really sealed with SFP before but I want to created a new fibre network. Can SFP just be plug & play like ethernet or do you need a lot of knowledge ? I assume it's carry the normal IP/...
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1answer
39 views

Is there a way to determine my network transportation to specific path?

How can I determine my network transportation to specific path. I would like to determine that my data packages will go through specific routers.
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1answer
32 views

ASA ISP limit of ISP Speed

I've got configured ASA with two ISP. First is main ISP and second for backup. Is possible to set on conf of ASA if the speed of main ISP will be at low bandwith, ASA will active a backup ISP?
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1answer
148 views

Unable to see packet drops on tunnels

I have the following topology set on AWS where there are 4 CSR 1000v Routers deployed and Segment Routing enabled in which the Segment Routing Headend is R1 and the destination is R3. I aim to send ...
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1answer
67 views

How to filter the physical port of the switch through snmp?

I tried using snmp to get ifdescr, I think the interface name containing Ethernet might be a physical port, but I am not sure. In addition, the interface in dot3StatsIndex is also like a physical ...
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2answers
51 views

What is Global Wide Area Network (GWAN)?

Recently I encounter with a new term Global Wide Area Network (GWAN). LAN, WAN is common, but not GWAN. I've been searching around on the net but couldn't find the answer. So, I guess someone from ...
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2answers
65 views

Why cant i double my speed while simultaneously running my wifi as well as my sim data pack?

I always had a doubt why cant i simultaneously run my wifi and my data from my phone to increase my speed if not doing the same tasks i can maybe download an app while simultaneously uploading ...
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1answer
32 views

Is it possible to propagate MAC address back to sender?

Let me first to tell me what I know, please correct me if I am wrong. I know when Ethernet frame travels across the internet then Layer 3 data (Source and Destination IP) remains same and Layer 2 ...
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1answer
45 views

OC-1 and OC-3 speeds, really? [closed]

In many cases, I can measure my bandwidth at between 55 and 125 Mbps. Then I see that OC-1 and OC-3 speeds are 55 and 155 Mbps, respectively. Am I to believe that I have an OC-1 or OC-3 level ...
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0answers
11 views

Bmon - Find average bandwidth usage of a tool

I am using bmon network analyser and I am wondering if the way to calculate the average bandwidth usage of a scanning tool like Nmap, is to measure the total number of RX and TX bytes and divide them ...
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0answers
91 views

Fortigate SSL VPN Tunnel - How connect to different network

I have a router and a fortigate firewall. The router has 2 active interface 192.168.100.2 and 192.168.160.1 while the fortigate interface with IP address 192.168.100.249. There is a server with IP add ...
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1answer
24 views

Connectivity problems in a topology [closed]

I cannot identify any network problems in the following topology. https://i.imgur.com/eyUEzvz.jpg Any help in identifying problems would be appreciated, and I would be happy to work on them.
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2answers
55 views

In making network changes how would mixing sub nets affect the network

Will hosts with IP address manually assigned as 192.168.0.10/24 or 192.168.1.11/24 continue to function. When the router, DHCP, and switches are now setup to work as 192.168.0.0/22. We in inherited ...
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1answer
39 views

How to score links in a network represented as graph?

I am working on an academic research about networks. I have proposed my model a a graph that nodes are users with commodity hardware connected to each other via internet as graph links. I know this is ...
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0answers
64 views

I'm unable to see packet drops after configuration of QoS policy

I aim to send iperf traffic from Endpoint1(Client) to Endpoint2 (Server) with the following SR path = {R1, R2, R3, R4, R3, R2, R1, R2, and R3}. First of all, the traffic generated by iperf from ...
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1answer
77 views

Restructuring office network advice and How to go about VLAN setup?

Wanted to get some advice and assurance that I’m on the right track for re-configuring our office network. Current setup: FortiGate100D with 2 physical network interfaces, network-1 used for regular ...
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1answer
40 views

Why I cannot see packet loss on GRE over capacity tunnels?

I have the following topology set on AWS where there are 4 CSR 1000v Routers deployed and Segment Routing enabled in which the Segment Routing Headend is R1 and the destination is R3. I aim to send ...
1
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0answers
16 views

Connect LAN port as internet to DSL-2750U [closed]

I want to use my router as a normal router by just using a LAN cable instead of WAN. The network is accessible to one of my computer via LAN(2 LAN cables, one I the one which provide internet and the ...
1
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0answers
26 views

Connecting 2 networks virtually [closed]

I am currently working on setting up a small personal network for home use and my own experimentation. I currently have a small network of computers operating from within my home and I have a server ...
4
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3answers
278 views

Leaf-Spine network without routing

If I have a leaf-spine network with all the servers on the same subnet, say 10.10.0.0/16, do I need a router (or l3) since everything is on the same network and the network is flat?
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0answers
31 views

MGUARD natting two subnets

I have two subnets: A: 192.168.1.0/24 and B: 10.1.0.0/16 With MGUARD GT/GT I would like to perform static NAT to have possibility to manage some devices inside of "A" subnet from "B" subnet. ...
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2answers
128 views

How to connect four networks with overlapping addresses?

We have four networks for four departments: R&D, Sales, admin and finance. All IP addressing is from the 192.168.1.0/24 network. So, maybe four PCs have same IP address, e.g. 192.168.1.8. Now, we ...
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1answer
49 views

Setup VPN to access company's internal network without NAT

Below is how the network looks like, the left is my home, and the right is my office. Now I want to connect to office intranet(192.168.0.0/24, R3). We don't have any vpn device that directly connects ...
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2answers
66 views

Virtualize pfSense on VMware

I'm making a network model and I have issues with virtualization of pfSense under VMware. I have a client in a VLAN 220 (172.2.20.100/23) trying to ping his gateway (pfSense : 172.2.20.1/23) but it ...
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0answers
103 views

4 ssids with 4 public IP addresses on pfsense

I have a requirement for 4 WiFi SSIDs, each with a separate public IP. As I need some sort of firewall I was thinking to get a pfsense Netgate SG-3100 that would have its WAN port connected to the ...
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1answer
35 views

10G NIC Dual port - Will I get ~10G throughput on both ports simultaneously [closed]

I have a dual port 10G NIC. I need to know if it is possible to get ~10G throughput in both the ports simultaneously? If yes, how can I test it out? If no, then will both port have ~5G thoughput ...
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2answers
55 views

Meaningless bits in CIDR notation

Is specifying meaningless bits valid syntax in CIDR notation? For instance, the netmask of 192.168.13.0/16 is 255.255.0.0. In this case, the last two octets (00001101 00000000) are meaningless because ...
1
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1answer
206 views

Broadcast link vs. point-to-point links

What is the distinction between broadcast links and point-to-point links? In the paragraph below, the author switches between "broadcast link" and "broadcast network" which is causing my confusion..is ...
1
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0answers
110 views

Cisco nexus STP loopguard

I have cisco nexus switches in vPC and they are connected to HP c7000 blade center switches and all my c7000 blade server has Linux Bridge is running, i believe something went wrong somewhere in Linux ...
1
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1answer
93 views

Understanding Throughput of interfaces problem on Cisco Routers

I have the following topology set on AWS where there are 4 CSR 1000v Routers deployed and Segment Routing enabled in which the Segment Routing Headend is R1 and the destination is R3. I aim to send ...
1
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3answers
87 views

Understanding how VPNs work?

I am trying to understand how VPNs work. Most of the posts/blogs on the internet say that all your traffic is routed through a VPN server. This sounds like proxy to me?? Another point that is commonly ...
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1answer
35 views

VPN server acting as a client for another VPN server [closed]

I was wondering if it's possible to have a VPN server that goes though another VPN server. Here a scenario that might explain my idea better: I have 4 computers 'A' - My Windows machine 'B' - My VPN ...
0
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1answer
84 views

Difference between port-channel lacp fallback individual VS. static?

What is the exact difference between: port-channel lacp fallback individual port-channel lacp fallback static
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1answer
24 views

LAN to LAN Connectivity of Moxa routers

I am with background of DevOps and to optimize stuff in office i am assigned a networking task with not much experience of networking. My scenario is like below I have two moxa (EDR-810) routers ...
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0answers
22 views

Modbus Wireless

What is necesary to implement a modbus over wireless? I know that ethernet and modbus have different application layer different which evolves different package format and different physical ...
3
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1answer
42 views

Bit stuffing and Error correction combined

If I understand correctly both error detection/correction and framing are done at the link layer. I understand how popular error detection/correction and framing techniques work. But I struggle with ...
8
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5answers
2k views

Cascading Switches. Will it affect performance?

I am really new to large scale networking and all I know is the basics. I will be doing a network for a huge workspace consisting of multiple offices. There will be a total of 308 Clients, with at ...
0
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0answers
19 views

How is it possible to create 6 subnets? [duplicate]

The following task presents me with an insurmountable obstacle... Given is the following: IP: 192.168.40.0 Subnetmask: 255.255.252.0 Task: Form 6 subnets over this network and enter ...
1
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2answers
52 views

Network IP Allocation

We have two ISP's named as A and B, are connected with RV325 Router. Is it possible to route A ISP to specific private IP without NATing