Questions tagged [isp]

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

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4
votes
1answer
136 views

What does NAT64 do which can't be done by deploying IPv6 + NAT444?

Why was NAT64 developed? What does it do that can't be done by deploying IPv6 + NAT444, and allocating your customers a (public) IPv6 and a (private) IPv4 address (behind a shared public IPv4 address)?...
2
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2answers
53 views

How to know if ISP network have multiple routes

When it is time to choose an ISP in a remote area, I hope that the chosen ISP is having an acceptable redundancy in his network. Is there any way to verify all different route an ISP is having in his ...
0
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1answer
51 views

Map of WAN cables in general [closed]

Whenever i search for the physical location and path of WAN connectivity, i only find submarine cables, and a site that seems like a paid service. Is there no free map where i can e.g. show the route ...
1
vote
2answers
79 views

How does cellular data differ from an ISP, and what can be tracked?

Are IP addresses given to a phone static or not? Also, how can phone companies keep track of a person if they wanted to find them? For example, I don't have an account and use a pre-paid card. I'm ...
3
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1answer
81 views

Public and Private IPs

I wondered if someone could explain this to me. At work we have a firewall that connects to the Internet and has an external IP configured on it via DHCP. The firewall's WAN port connects to an ...
-2
votes
1answer
54 views

How do i find out if a LAN is behind a multi-level NAT? [closed]

Not much i can specify here - its obvious that my CPE is NATing my LAN, but how do i find out if my ISP is using a carrier-grade NAT (obviously, without asking them)? I heard that port forwarding is ...
0
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0answers
68 views

Mobile Country Code (MCC) and Mobile Network Code (MNC) associated with an IP address

I am looking for a way to deduce/estimate the Mobile Country Code (MCC) and Mobile Network Code (MNC) associated with an IP address. From an IP address, I am able to find the associated Country and ...
7
votes
2answers
936 views

How do routers on the backbone avoid IP address conflicts?

As the title suggests, how do ISPs, and other networks connected to the backbone ensure that their host network address isn't already in use by another backbone node, as there is no controlling device ...
1
vote
1answer
78 views

Which part of an IPv6 address is assigned by the RIR?

Given my PC or any other, which part of the IPv6 address is allocated by the RIR and which part is allocated by the ISP? I know a prefix of /64 is commonly used, does that mean the bits before the /...
0
votes
1answer
152 views

In one organization having two ISP which configured on fortigate firewall ? How can we do the failover for internet?

Organisation don't have AS number .As of now we are doing manually route for any ISP at a time. when default Internet link is go down that time making second link enable on firewall. I saw the some ...
3
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1answer
81 views

WISP Network Edge Device - Router vs Switch

I am faced with an issue right now working for a small rural WISP. We have roughly 250 wireless customers throughout our area using Ubiquiti radios. Our main fiber drop comes in from a larger ISP on ...
2
votes
4answers
137 views

Can I make 2 ISP providers' IP addresses into 1 IP address?

We have 2 ISP providers (X, Y) and we have connected the ISPs to a core switch>Sophos firewall>Switch rack>end user (LAN & WiFi). This ISP works on fail-over mechanism. The issue here is that we ...
1
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2answers
91 views

Can large ISPs really offer 1Gb “dedicated” service to every home and business?

Hopefully this is on topic for this site. While researching synchronous carrier service, so called EDIA or Ethernet Dedicated Internet Access, to a rural location in New Hampshire, USA, I came across ...
4
votes
2answers
635 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
vote
1answer
57 views

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 ------| ...
18
votes
2answers
3k 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 ...
1
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0answers
76 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 ...
1
vote
1answer
92 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 ...
1
vote
3answers
315 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 ...
3
votes
1answer
250 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 ...
5
votes
2answers
1k 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 ...
0
votes
1answer
38 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, ...
1
vote
2answers
72 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 ...
3
votes
2answers
150 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 ...
0
votes
1answer
132 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 ...
1
vote
1answer
288 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 ...
4
votes
2answers
314 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 ...
4
votes
1answer
157 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 ...
1
vote
1answer
501 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 ...
2
votes
2answers
153 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 ...
0
votes
2answers
111 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
1
vote
1answer
72 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 ...
0
votes
1answer
2k 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 ...
8
votes
2answers
2k 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 ...
1
vote
2answers
87 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 ...
1
vote
1answer
216 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....
1
vote
1answer
246 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 ...
1
vote
1answer
254 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 ...
0
votes
1answer
74 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 ...
1
vote
1answer
104 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 ...
3
votes
2answers
116 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 ...
1
vote
1answer
80 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-...
0
votes
2answers
541 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 ...
0
votes
2answers
75 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, ...
2
votes
1answer
185 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 ...
1
vote
0answers
39 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 ...
-1
votes
1answer
109 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 ...
4
votes
2answers
231 views

How do you account for unreliable ISPs?

I maintain internet for a small business in a third-world country, and I am forever struggling with unreliable service from our ISPs. Our current setup uses a Peplink Balance 580 for load balancing, ...
1
vote
3answers
213 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 ...
0
votes
1answer
55 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.. ...