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Questions tagged [isp]

Questions relating to the operations of ISPs and interacting with them.

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Pros and Cons of two different ISP connection Model

I have seen two different models to connect My Server to cloud. Model 1: DNS ------| |---ISP_Router---Cloud----DSL Modem---Office_Router---Switch---My_Own_Web_Server Google ------| ...
Smith Dwayne's user avatar
20 votes
2 answers
4k views

Is it common for ISPs to connect to each other directly?

I'm reading up on the relationship between latency and ISP interconnectivity (that higher ISP interconnectivity results in lower latency, which makes sense to me). My understanding is that IXPs ...
Zach Smith's user avatar
1 vote
0 answers
137 views

Different Source and Destination IP to and from ISP [closed]

Could somebody tell me which model the ISP are using ? I have a leasedline WAN with following information. IP: XXX.XXX.XXX.123 Gateway: XXX.XXX.XXX.126 Subnet: 255.255.255.248 The problem is every ...
Toi Lee's user avatar
  • 11
1 vote
1 answer
289 views

How can I use a firewall as Internet Breakout?

I am currently installing a firewall in my company (using OPNsense) but I was asked to use the same system as "Internet Breakout" as well. Does anyone know how to accomplish this? I understand that ...
heavymeza's user avatar
1 vote
3 answers
1k views

Would it be possible to split ISP connection via Switch?

In my current setup, my ISP is directly connected to my firewall. Now I want to add a PC that I can put Static IP to test the ISP directly outside of the Firewall. would this be possible? I have 5 IP ...
Terrence McGinnis's user avatar
3 votes
1 answer
414 views

ISP lab GNS3 - BGP route exchange

I'm trying to develop an understanding of the WAN/ISPs. Eventually I'll build up to MPLS, but for now I'm trying to lab up a notional, basic ISP: R1, R2, and R4 are PE routers. They've successfully ...
The_Glidd's user avatar
  • 151
4 votes
2 answers
7k views

Layer3 vs Layer2 LACP

We have ISP link 4x10G LACP Layer2 and now we are upgrade to to 8x10G LACP, currently i have created VLAN interface to terminate that link because it L2 Now i have option to decide to go with L3 or ...
Satish's user avatar
  • 4,351
0 votes
1 answer
87 views

Discovering public ip from wifi signals, shodan, parent router NAT [closed]

MAC addresses innately do not change right? and you're able to scan for broadcasting APs where you'll be able to detect different nearby mac addresses of each AP.. Public IP addresses change, ...
user avatar
1 vote
2 answers
137 views

Can ISP know whether port forwarding is been done? [closed]

I sit behind a NAT of an institute, which has a rule that implies that no port forwarding can be done. I am developing a peer to peer application, which I need to test. So I have to be sure that it ...
SandyG's user avatar
  • 11
3 votes
2 answers
330 views

BGP source base routing question

This question is little convoluted to explain but i will try my best, I have following scenario. I have one ISP and i am getting 2x40G drops which you can see in diagram Link-A and Link-B (Both ...
Satish's user avatar
  • 4,351
1 vote
1 answer
709 views

What are the significance of different types of routers?

Initially when I started learning networking, I understand the 'Switches' and 'Routers' are the core components of networking. As I started getting more into networking, I started hearing different ...
Deepak's user avatar
  • 677
1 vote
1 answer
666 views

Question about BGP peering with your ISP

In you case you want to get rid of the static default route and you want to peer with your single ISP, do you need to announce any routes for your side ? I have the below config, is it enough for ...
Samirtow's user avatar
4 votes
2 answers
636 views

What provision does DS-Lite, as used by ISPs, have to provide IPv4 blocks to CPE?

I run a small ISP for a rural community in England. There are around 350 residential properties and 15 small businesses. Three of these businesses run systems that require two consecutive IPv4 ...
alifen's user avatar
  • 61
4 votes
1 answer
259 views

Very confused with routing

I'm having a hard time understanding some "basic" things... I know a bit about configuring routing using CISCO packet tracer exercises (static routers, rip, ripv2, ospf, eigrp), but I have a doubt ...
John's user avatar
  • 83
1 vote
1 answer
872 views

Why would the local address in case of mobile data network not a private IP address? [closed]

I have connected my smartphone to internet over 4G through Airtel (ISP) I did - "What's my IP" on google. And below is the screenshot i obtained- I understand the public IP address is in the range ...
Deepak's user avatar
  • 677
2 votes
2 answers
231 views

can we do bgp route in cisco 2821 router?

I have a cisco2821 router and it has connected to one Internet service provider. Now i need to buy another one router so that i can have another Internet provider which can help me when one primary ...
Travis cook's user avatar
0 votes
2 answers
114 views

What is this device? [closed]

I'm trying to create a map from a network based on some photos of a rack. And I need to know what is this device, apparently it's the entry point for one of the ISPs. I'm not a network expert
Gutimore's user avatar
  • 113
1 vote
1 answer
160 views

Can I run a VPN faster than internet using custom router + optimized protocol other than TCP/IP?

If I make a VPN using a custom, optimized hardware router, running a customized routing protocol much more efficient than TCP/IP, put it in place of the router my ISP gave me, then is it possible to ...
fakename's user avatar
0 votes
1 answer
3k views

link-monitoring in fortigate

]3i am trying for a failover between two ISP interfaces using link-monitor in fortigate. both ISP links are vlan interface ( ie, not physical). and with my primary ISP, i have eBGP. i need to monitor ...
abdul_razak's user avatar
8 votes
2 answers
5k views

Single Public IP Address for multiple physical locations

Is it possible to get or set up a public IP address that is load-balanced between multiple physical locations or sites? It may be something like a virtual IP address (VIP), which points to multiple IP ...
kzia's user avatar
  • 183
1 vote
2 answers
239 views

Firewall has only one port. How can I properly NAT to ISP on a Layer-3 switch?

My firewall, an iptables Linux box only has one Ethernet port. My network topology is pretty simple and looks something like this: ISP (Port Gi 1/1) -> Switch <-Firewall on Port Gi 1/2 ...
Tek's user avatar
  • 125
1 vote
1 answer
586 views

SONET/T-Carrier differences - MPLS/VPLS bandwidth

Could someone explain to me simply what is the difference between SONET and T-Carrier? I know that the ISP generally uses SONET on their infrastructure (Ciscopress 2017, 1.2.1.2 section, http://www....
bdes31's user avatar
  • 1,085
1 vote
1 answer
507 views

Cisco VRF with two ISP

I am posting this question to get better understand of VRF on Nexus switch. This is the scenario i have 10G_A link from my ISP running BGP on it, now i need more capacity so order second 10G_B link ...
Satish's user avatar
  • 4,351
1 vote
2 answers
506 views

WAN lines types - understanding leased line/circuit

Studying the WAN lines types, am I right regarding the statements below, or if not, could you correct me please: A real leased line, could be performed with TDM on a line with for example SDH, TDH or ...
bdes31's user avatar
  • 1,085
2 votes
2 answers
494 views

How ISP identifies a device on an LTE network?

I have an LTE CPE which has been provided by an ISP. When I tried to put the SIM into another device, it connected to the network but instantly got disconnected from the network. There should be some ...
Iresh Dissanayaka's user avatar
0 votes
1 answer
99 views

Is it possible to configure router to prioritize "normal" network usage over "torrent" downloads high network usage [closed]

I have a typical problem of having a shared connection with many people. The connection provided by my ISP is good enough to service many people (50mbs). However, every now and then, when someone ...
Rainer Plumer's user avatar
1 vote
1 answer
238 views

route vlan traffic to isp on Dell OS9

I just got a layer 2/3 switch from Dell, S3048-ON with OS9 version 9.13(0.0) I'm trying to route vlan 20's clients to my ISP to reach the internet in vlan 10 This is my exact configuration: Port ...
Tek's user avatar
  • 125
3 votes
2 answers
186 views

What does ISP's Internet speed actually mean

Sorry if it's irrelevant for this forum, but I couldn't find any good answers online. I know that "Internet speed" isn't a stable thing, and the rate of getting a something online, for example ...
sel's user avatar
  • 167
1 vote
1 answer
435 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-...
Zach Valenta's user avatar
0 votes
2 answers
1k views

How to build a ISP (Internet Service provider)? What are the core components required? [closed]

I am trying to understand the cost of building an ISP. The core components required, licences, backbone and any leases. I have searched a lot on the internet and i am not able to figure out the basic ...
john_avr's user avatar
0 votes
2 answers
92 views

How does a ping to a public IP work in my same AS?

I am an ISP, I have a BGP session established with a larger provider. The question is, when from my network I ping a public IP, also inside my AS, Does the ping go to my provider and then come back, ...
androidBegginer's user avatar
3 votes
1 answer
336 views

Is DSLAM connected to BRAS through PSTN?

I am searching for any real world example to understand how the internet traffic reaches the ISP. I tried to search google for an answer I found that it is connected through ethernet. But I want real ...
Ahmed Elsawy's user avatar
1 vote
0 answers
50 views

Low quality of realtime audio/video calls. Route such traffic through a separate WAN connection? [closed]

We have problems with the quality of audio/video calls in our office. We get much better quality using mobile LTE connection than our fiber link. LTE connection always goes HD, but the fiber ...
Michał Fronczyk's user avatar
-1 votes
1 answer
180 views

ISP L2vpn setup query

I am new in here and I hope to find my answer. I'm working on sub ISP company which provide internet and ipvpn services to customers through infrastructure of main ISP. We have a central data center ...
Asem Moqbel's user avatar
4 votes
2 answers
273 views

How do you account for unreliable ISPs?

I maintain internet for a small business in a developing country, and I am forever struggling with unreliable service from our ISPs. Our current setup uses a Peplink Balance 580 for load balancing, ...
Josiah Nunemaker's user avatar
1 vote
3 answers
283 views

Does bandwidth limit apply only from my ISP to my network?

My network is subscribed to a 16 Mbps cap. So if I download a file from let's say Facebook, does the ISP download the file from Facebook at a different speed then sends it to my network at 16 Mbps? Or ...
silver_user's user avatar
0 votes
1 answer
120 views

What is the solution for low signal coverage, a better transmition or getting better receiver/(antenna/dish)?

We have a remote site, were a 4G/LTE Industrial/Rugged router/Gateway is installed, but we always suffer from temporarily disconnections and lag, the engineers say its installed in low coverage area.. ...
Saleh Alshaikh-navigator's user avatar
3 votes
2 answers
275 views

How do broadband optical transmitters work?

So I'm a hardware engineer learning about networks, and one interesting subject that my book glassed over was how hybrid fiber-coax networks work. One thing that was throwing me off was that the ...
Dustin's user avatar
  • 31
1 vote
3 answers
2k views

What is the proper switch configuration for the switch that is connected directly to ISP source?

The Question: What is the proper configuration for the L3 switch to be allowed to assign public IPs for the firewalls? I guess All I need is that the switch L3 act as a layer 2 switch...Right? ...
Basem Abdulrahem's user avatar
5 votes
3 answers
1k views

Why is the internet *not free?

I understand that the reason we pay the ISPs is to rent the equipment used to connect with the rest of the world us such as the optic fibers, the cellular towers, the satellites. However, if I want to ...
TSR's user avatar
  • 153
2 votes
2 answers
4k views

Can ISP know computer MAC address in local network?

There is a wifi network with 5 computers. When one of these computers request a URL from internet, Can ISP know the MAC Address of the computer that made request or phone's IMEI number? Are these ...
burak selvan's user avatar
0 votes
1 answer
257 views

Best practices for IP Flow monitoring [closed]

Current flow probes (using eg. IPFIX, netFlow v5/9, sFlow) are able to monitor flows defined at least by the tuple < source IP, source Port, IP protocol, destination IP, destination Port, source ...
vera's user avatar
  • 201
1 vote
2 answers
543 views

What is PPPOE line protocol?

In serial wan connection we use PPP or HDLC line protocols,but where would we use PPPOE? What is Ethernet in this term 'PPPOE'?
Tehmas's user avatar
  • 355
6 votes
2 answers
5k views

Fortigate 100D internet on VLAN wan port

I am fairly new towards Fortigate firewalls and I am trying to set up one FortiGate 100D running firmware v5.0 as a router for a hotel network. I have 2 ISPs using PPPoE connection that runs on VLAN ...
Kenny Yap's user avatar
1 vote
2 answers
155 views

Specific web site traffic on 2 ISPs

There's a company (B2B interface) that provide certain services through a custom ISP (DSL), but this limits the internet connection only to this site, and on the office we have an regular ISP (DSL) ...
ABens's user avatar
  • 11
0 votes
1 answer
46 views

When is static ip address given? [closed]

My laptop is connected to the internet via a wifi router. In other words my router is connected to the internet. When i check my ip address via a web service i see that the ip address keeps changing. ...
kofhearts's user avatar
  • 103
3 votes
1 answer
1k views

What's the difference of TR-069 and Point-To-Point protocol?

I've read my ISP, Telecom uses a Point-to-Point regarding the ADSL networking over ATM nowadays (which is rarely used in my country, and it's non-commercial). My friend told me it actually uses TR-069,...
WayneXMayersX's user avatar
0 votes
1 answer
33 views

Trying to connect router to swiss coax plug [closed]

I have a dsl-ac68u DSL router. It has RJ11 and RJ45 plugs. Plug in the wall only has a coaxial output. Can I go around my ISP's router/modem and connect directly my router to the wall? If so, how? ...
Dragan's user avatar
  • 1
4 votes
3 answers
10k views

Can I set two gateways or more on the same subnet with NAT on a Cisco router?

Let's say I have the the following configuration on a Cisco router. ISP 1 Connected and configured into GigabitEthernet8. VLAN 1 192.168.0.0/24, NAT configured. Gateway is 192.168.0.1. ISP 2 ...
user avatar
2 votes
2 answers
143 views

connecting two ISPs to my network

Hi My network has the following resources: 3 ASA-5505 w/site-to-site VPN's newly acquired c801F-K9 router Exchange Server 3 ISP's (soon to be 2) A t-1, DSL, Satellite. VOIP Cisco Cme My goal is to ...
noobInTraining's user avatar