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Questions tagged [design]

For questions about planning and implementation of a computer network. Use this tag when you have questions about how to design your network and what things to take into account when implementing a new network infrastructure.

0
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1answer
22 views

config of cisco 2950 switches [on hold]

i have a cisco sw 48 port and 2 are gb ports. i have 4 servers and most of the ports are directly connected to the users i.e access port and some are going to the tp link switches and some are going ...
0
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0answers
17 views

network design Improvement [on hold]

I have a network of around 45 users (devices plus users) and 4 servers. recently I buy a cisco 48 port 2950 switch+2 GB ports. the users are spreaded (floors and rooms) my design is that from the isp ...
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2answers
46 views

Creating a network for three separate businesses in one building

What would be best practice in terms of creating a network to satisfy three separate businesses located in one building? The building in question has three floors, each floor has 25 workstations and ...
1
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1answer
68 views

Configuring multiple subnets with switch connected to single router interface

I have a design like this But I'm receiving a lot of mismatch errors and it doesn't work at all. I tried to ping 10.0.0.1 to no avail. I'm trying to configure the vlans on the switch 1 this way (...
3
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2answers
463 views

Internet structure and ISP networks in detail

I am studying about internet structure, ISPs and their interconnection. However, I have trouble connecting some terms and understanding the greater infrastructure of internet in more detail. I will ...
1
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0answers
44 views

How to design network with high availability in a multilevel small workplace [closed]

I want to create a network in my work 4 floors 50m2*4 workplace. Requirements are simple: Share internet ( < 20mb/s ADSL) while blocking someone from abusing download speed for long period. (...
0
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1answer
46 views

Trade Floor Network Design Feedback [closed]

I have an assignment that I am working on. Now I admit, I am far from knowledgeable and I have nowhere to turn to for help at the moment. I am not asking for someone to complete the assignment for me, ...
0
votes
1answer
135 views

Is forwarding rate important for selecting a collapse core switch in IP camera implementation?

I need to select a core switch that will connect my access switch to an IP surveillance's server. The point is that in my network I'll have 109 IP camera sending real time traffic to the server and I'...
3
votes
1answer
160 views

OSPF Area Design

Have a hub and spoke design where each Branch has a single router with a WAN connection to DataCenter1 Hub and another WAN connection to DataCenter2 Hub. There is no OSPF running elsewhere in the ...
4
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3answers
423 views

Theoretical: Bottleneck in a switch stacking environment

Quick question regarding stacking environments and their limitations regarding traffic bottlenecks. Assuming the following use case: We have a stack of 8 switchs, forming a Half 10Gbps stack ring. ...
5
votes
1answer
659 views

Should a Metropolitan Area Network (MAN) be setup with a router at each site?

Should a Metropolitan Area Network (MAN) be setup with a router at each site? Or, because the connections between sites are usually at layer two, should each site operate on one "master" switch which ...
2
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2answers
65 views

Re-tagging identically tagged VLANs

Given multiple networks all with the same VLAN tag, is VLAN re-tagging a wise thing to do in order to keep them separated on the same physical network? If so, how can I achieve this without getting ...
2
votes
1answer
89 views

network infrastructure configuration design in a openstack environment to enable instances to have a public IP as floating IP

Has anyone had an idea of what are the possible configuration design of a network infrastructure in an OpenStack environment to enable instances to have a public IP as a floating IP? An example below ...
2
votes
1answer
120 views

vlans - How to manage vlans in this scenario?

Note: This is not a project of an existing or future real network but only my laboratory in GNS3. Hey, I have a network project presented as in the diagram where: pfSense works as a firewall and ...
2
votes
1answer
135 views

Proper network design for office use

I have two 4G LTE router modems in my office which we want our clients connect to these modems to have access to the internet. I have a shared server which should connect to these both modems that ...
1
vote
1answer
156 views

Network design question for datacenter

We have new customer and they said their traffic requirement is ~40GB so i am planning to order some hardware and have some question or doubt in mind. I am planning to put Nexus 5000 for Core layer ...
1
vote
1answer
61 views

diff btw PTSN and DSL?

I have seen DSL compared to PTSN (public switched phone network). What are some of the major differences? Is there anything about this answer to a similar question [https://www.quora.com/What-is-...
1
vote
1answer
145 views

Hardware implementations of BFD

Is there any hardware implementation of BFD (Bidirectional Forwarding Detection)? In such case, what will be the average times for discovering a link failure instead of a path failure? Thanks
3
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4answers
1k views

L3 Core to Firewall question

I'm in need of some advice regarding the implementation of the network core layer of a network I need to design. I've found some similar questions asked (and answered) already, but none have really ...
0
votes
3answers
1k views

Calculate max transfer speed in LAN network

We have a LAN network between consumers and producers servers. Producers' output path has been mounted in consumers. There is a 10 Gig switch between producers and consumers and the link between each ...
6
votes
1answer
3k views

Do i need to configure VLANS on my router/firewall or just the switch?

I finally took time to map my entire shitty network to understand exactly what the guy before me did, and i must admit i'm a little bit surprised even if i'm not a network expert... Just take a look ...
2
votes
3answers
247 views

Need some advice with network topology

Hi Network Engineer experts out there, I need to refresh our network infrastructure since our network is not secure and not very structured. Right now, our network doesn't have VLANs, everything is ...
1
vote
2answers
125 views

L2 network design questions

Good afternoon everyone. I would like to know the textbook answer to a network I've been asked to assist with. I have an IT cupboard which serves the location as the MDF. I then have a variety of ...
1
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2answers
501 views

Preventing Load balancing in EIGRP

In a recent project, I have been told to consider four Hubs (two in HQ, and two in DR), where each branch will have EIGRP neighborships with all four, as part of a DMVPN based WAN. I have tested this ...
2
votes
1answer
293 views

Network design questions

I've been handed a project, and I'm familiar but not experienced enough to make a solid decision on this. I'm actually on the firewall side of things. We've lost our lead engineer and I'm wondering if ...
5
votes
2answers
317 views

Defining hierarchical BGP route-maps

I work for an MSP with a relatively small network. We're implementing a new set of Cisco ASR 1001-Xs on our edge and I'm trying to improve our BGP configuration. The routers are running: IOS XE ...
1
vote
2answers
369 views

F5 as a backbone router

We've been using the LTM and ZebOS for some time now. Time and again we've run into OSPF bugs, and an upgrade usually resolved them. ZebOS's BGP has been relatively stable in that regard. We're ...
-1
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2answers
319 views

Valid use cases for packet deduplication? [closed]

(On-the-fly) packet de-duplication is an advertised feature of some devices in which exact copies of packets can be allegedly filtered out at near line-speed. Ignoring the plausibility of this working ...
8
votes
2answers
419 views

What certifications are there for Fiber Optic termination and splicing?

As a knowledgeable person in computer networks I have always had an itch for learning how to create custom-length fiber optic cables. So, as a personal goal, I want to get trained and certified in ...
1
vote
1answer
35 views

Deploying a balanced, redundant network with 2 WAN networks

I've been tasked with upgrading our network and could use some input. We have 2 networks coming in currently to a single C7206VXR. We are now adding a second 7206 and wish to use it properly to better ...
0
votes
1answer
88 views

Guidelines for network design of bladecenter

I'm setting up a lab environment consisting of an IBM Bladecenter H (equipped with 4-NICs blade servers and 4 Cisco 3012) and 2 3750 as Aggregate switches. The blade servers will host VMWare and ...
1
vote
1answer
119 views

What is the advantage in using sub-domains in network naming conventions? [closed]

Although our devices are named things like: atln-0102-rt06-ge0 I often see naming conventions that use sub-domains like this: cr06-0102-ge0.atln.example.net Or even: ge0.cr06-0102.atln.example....
1
vote
2answers
304 views

Network distribution/core design implementation

Can the Cisco 3650 do the job of distribution/core layer? We have at least 250 devices that will be connected to the network. More info : The Cisco 3650 is needed for inter-vlan routing.
4
votes
1answer
429 views

Is there benefit to iBGP peering between CEs in a BGP dual-homed design?

Two companies wants to exchange some private prefixes (4K prefixes) using eBGP. Each company will have two border routers (with OSPF as IGP, and mutual redistribution & aggregate in eBGP) So, ...
0
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1answer
2k views

General best practice for VLANs and domains

I recently took a job at a school. This is only my second position as an IT professional. My only experience with corporate networks is in a large school district at another school. They used VLANs to ...
4
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3answers
192 views

Campus Area Network questions

Looking for design principles in regards to a Campus Area Network? We are a medium sized company with < 250 employees spread across 4 offices. We will soon be combining 2 offices into 1 larger ...
2
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4answers
243 views

Wireless AP placement

Attaching office studio layout with my proposed Ubiquiti AP placement. All 28 desks occupied with heavy WiFi users that like to complain;) Is the placement the best possible? Do you think that one ...
2
votes
1answer
153 views

Rate limit based on VLAN

My ISP company has some PoPs in remote areas, as shown in diagram. It is currently, it's getting all prefixes from Local IX and getting only a default route from the upstream Internet provider. ...
0
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1answer
26 views

Power Budget Based on Miniums?

I'm currently looking at 40Gbase-LR and am curious about the advertised power budget. Here are the specifications: Transmit max 2.30dBm Transmit min -7.00dBm Receive max 2.30dBm Receive ...
1
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0answers
28 views

Directly Connected Multihomed Hosts

I'm looking to directly connect a host (dual NICs) to a clustered appliance. The clustered appliance consists of two controllers each with their own NIC and VIP. In the event of a controller failure, ...
0
votes
1answer
479 views

Features of Windows Ad-hoc Network [closed]

Recently I was doing some tests in a small wireless ad-hoc network and one interesting feature I've found was: Suppose you have a hidden node problem among computers A, B and C (A and C are out of ...
2
votes
1answer
44 views

Fiber Trenching Design (L1)

We are in the process of building a new campus which will be 10 single-story buildings on 20 acres. The buildings are laid out in a U shape. The bottom of the U will host all IT services (servers, DC, ...
0
votes
1answer
35 views

Managment Network: provide wireless access to 3 campus [closed]

During an interview I was asked to provide a basic outline of a project managment for a network position. The objective was to provide wireless access to 3 campus (let's say each of 1000 people) that ...
2
votes
2answers
1k views

Connecting one public ip address independently to two private ip networks with full port availabilty on both?

I have one public ip address that I would like to share among two private networks. To this end I have a first router/firewall and second router/firewall. Today, the second firewall terminates the ...
0
votes
2answers
103 views

Not enough ethernet lines; looking for a cheap solution

Current problem: 7 desktops installed at client's business 1 dedicated ethernet line for each desktop The original idea was that each line would run to their VOIP phones and then take advantage of ...
1
vote
2answers
428 views

Fiber vs. Point-to-point radio for campus network

Looking for best practices and feedback on whether to use fiber or radio ("air fiber") in a certain situation ... === BACKGROUND === --- Project involves providing Internet access to several hundred ...
4
votes
3answers
535 views

Network design question

[Internet] | | |---------[ Public Server ] | | [ Firewall ] | | [Private LAN] In above Design we have a few public servers. We moved them outside the firewall ...
2
votes
2answers
231 views

Need some help with taking over a network

Ok so I am taking over a network and I'm trying to figure out the best topology for it and looking for some advice on what you experts think. Right now, the ISP demarc goes to an unmanaged switch (...
1
vote
1answer
184 views

DHCP relay question in small network

Baby network person here. I'm trying to set up a small network such as the one in attached picture. 3 routers, 3 switches, 3 endpoints. Color boxes denote subnets. If I want to have only 1 DHCP ...
1
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4answers
154 views

Optics for long haul fiber

Does anyone make a single fiber cwdm 10g sfp or xfp that will do 10g over a single fiber using a single 1510nm wavelength?