Questions tagged [isp]
Questions relating to the operations of ISPs and interacting with them.
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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 ...
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2
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Who pays for traffic when it transits multiple providers
TLDR Question:
Who pays for traffic when it transits multiple providers
Original Question
I know there are a great many sites out there with this question and answer, but as yet I have not been ...
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3
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How can ISPs on one continent connect to ISPs on another continent?
How can ISPs on one continent connect to ISPs on another continent? From a physical layer standpoint?
Say one ISP is located in Asia and another one in Europe how would they connect their fiber ...
- 357
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2
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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 ...
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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 ...
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3
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Two ISP bgp topology?
We use palo-alto firewall as an internet gateway. We have 16 static ip-addresses. One is used for outbound traffic (users browse internet) . The rest is used for inbound traffic (mail server, ...
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1
answer
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Problem with VPN tunel from remote location through ISP (PPTP)
I have network situation like this:
ISP Router (modem) - device given to us by our ISP - modem & router in one but it is set into transparent mode - ISP say so ;D we have to find it that it is ...
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6
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2
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Is a point-to-point T1 line literally a line in real life?
In Packet Tracer this is how we draw a WAN link, or a T1 link:
Does the "red line" here literally means there is a single cable connecting the two routers in real life?
If no, then what are ...
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2
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ISP edge router configuration
I need to configure Cisco 2901 router to route between interconnect block and usable ip block. Circuit is fiber 30Mb/s
I got this info from ISP provider:
IP space:
Interconnect block - 50.204.xxx.80/...
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6
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1
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What's the difference between autonomous systems, ISPs and RIRs?
First of all, I am not sure if I can ask this question here, and, if not, I appreciate that you indicate me the best website to ask this question.
I have been reading about ASs (Autonomous Systems), ...
user16355
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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 ...
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Can you become your own ISP?
How exactly does an ISP connect you to the vast network of computers which is the internet?
In my area there are several ISP's. For example. Bell, Rogers, and Cogeco all connect you to the "same ...
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6
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2
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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 ...
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5
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1
answer
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Who assigns IP s to the ISP s?
How a particular ISP get it's IP ? Is there any centralized authority to distribute IP s ?
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3
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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 ...
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Missing major ISP's from local major IXP's?
I read all the posts on this site on IXP's and my question remains. Any clarity that anyone can bring to this topic would be much appreciated.
I have trying to get a better mental big-picture of how ...
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1
answer
253
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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)?...
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IPv4 public address
I know the basics of NAT technique and public/private IP addressing but I still have one conflict.
Let's say that my private address is 192.168.1.2 and my public one is 180.180.1.2.
If I ping 180.180....
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5
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4
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Advertise downstream customer-owned /24 without BGP-Peering
First post, so I apologize if I don't lay things out clearly, or if this is the wrong forum.
We are a small/regional ISP. We have a customer who has a couple of /24s (not purchased through us), and ...
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5
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1
answer
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Autonomous System Number overlap confusion
I'm really confused. I have a list of all the AS numbers and their "description", which I got from MaxMind. I thought the ASN system was pretty straightforward, but let me show you my confusion.
Take ...
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Clustered ASA with Dual WAN Redundancy
Let's assume there are two firewalls (ASA) clustered together and two routers (1800 and 2900) each with it's own WAN link. The two routers are managed from the same ISP (it's just link redundancy).
...
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4
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2
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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 ...
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4
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1
answer
242
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Prefix hijacked by another ISP
I had the <sarcasm>privilege</sarcasm> for the second time in 10 years to have one of our smaller prefixes hijacked. I have a branch office with a /27 assigned from ISP-A PA space ...
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4
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1
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Why doesn't ISPs reset DSCP at the edge before delivering traffic to customers?
Some ISPs are doing QoS based on traffic type (online streaming), such as Comcast and Cogent. Why don't they reset IP DSCP at the edge so it is not as obvious that they are doing some kind of traffic ...
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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 ...
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4
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1
answer
870
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Cisco / Spanning Tree on Access Ports from ISP
Please excuse my ignorance & noobishness.
I have a switch which has two different point to point connections, these both plug into access ports & have their own VLAN.
These two point to ...
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4
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1
answer
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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 ...
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3
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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
...
user34559
4
votes
1
answer
240
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/16 and /24 routing from ISP
For a long time we had /24 from our ISP with a static route. Now we would like to have our own routers and do BGP on our own. Our ISP says your block is on our 16 so it may create routing loop. How do ...
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BGP routing based on ARIN info
I have discovered weird routing from our ISP all related to BGP. Here is the scenario (real-one).
- there is a /19 prefix bought about 10 years ago, which was registered with ARIN authority.
- as ...
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4
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2
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275
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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, ...
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4
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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 ...
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3
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2
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BGP RTBH setup with ISP
I had a discussion a while ago, related how to stop DDoS. Read this first: BGP null route when DDoS?
Finally, we talked to the ISP, and it agreed on setting up a BGP trigger so the next time a DDoS ...
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3
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1
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Multi-homing and BGP routing with less than /24
Background: We own /24 as well as /23 blocks provider independent.
I am talking to an ISP, say ISP-A for a 10G line with a IPVPN line (2 links - actual inbound + IPVPN link for clean traffic when ...
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3
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Multihomed Internet edge without BGP. Overlapping routes, a viable design?
While the industry is preaching cloud in every market, and users, whether eagerly, reluctantly or unwittingly start falling in line
everywhere, few seem to talk about the actual fabric of the ...
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1
answer
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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 ...
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3
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1
answer
357
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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 ...
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1
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Could accessed sites over an SSH tunnel be tracked by ISP? [closed]
I created an SSH tunnel and using it as SOCKSv5 proxy on Firefox. I checked whatismyipaddress.com and some other sites, they could not detect a proxy on my computer and shows my location on the server'...
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1
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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,...
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3
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1
answer
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Service Provider inbound routing problems before using communities
As I understand it Service Providers used to use BGPs local preference for manipulating outbound traffic and AS Path for manipulating inbound traffic before they used communities.
As the internet grew,...
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3
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1
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P2P Applications and ISPs
My book says that because most ISPs support asymmetrical bandwidth usage and so support greater downstream traffic than upstream, that P2Ps somehow put stress on the ISP due to this? I don't ...
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1
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455
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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 ...
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2
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374
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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 ...
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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 ...
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1
answer
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Cisco LNS and per Customer VRF
O.P.
Hi ,
I am trying to configure a Cisco LNS with VRF per Customer.
Each customer that dial (PPPoE) to the LNS will bond to the appropiate VRF.
The VRF will be assign according to the RADIUS AV-...
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3
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1
answer
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How do communication networks physically direct traffic? [closed]
I’m curious as to how this would work. I have an ISP that uses Coaxial Cable to deliver its services (this company was one of the original cable TV providers in the neighbourhood, hence why coax and ...
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3
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1
answer
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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 ...
3
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1
answer
589
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ISP connections Vs IX Connections
I would like to know the difference between ISP connections and IX connections? Basically we are evaluating some of the ISPs to get our edge circuits. While doing some research on it, came across to ...
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2
answers
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Juniper SSG and multiple interfaces
Okay guys I have a conundrum on my network, I do not know how it is working, I just know it does. I have a Juniper SSG firewall with 3 different ISPs. I have traffic coming in through the 3 interfaces,...
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4
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Active\Passive Routers w\ BGP
What I'm trying to do is take two routers, "A" and "B" where 'A' is the primary router. Just like with active\passive firewalls and HSRP I want to "float" the default gateway between either Router A ...
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