Questions tagged [point-to-point]

For questions about Point-to-point network links, where the term point-to-point means a wireless data link between two fixed points or in a switching world, where all ports are a series of point-to-point circuits, via micro segmentation. The tag can also be used in relation to a point to point tunnel (PPTP) or VPN connection etc.

Filter by
Sorted by
Tagged with
1 vote
2 answers
94 views

point-to-point or broadcast network : concrete case

What concrete rule or layer of the OSI model should be used to decide whether a network is a point-to-point network or a broadcast network? A general definition (*) seems clear, but in practice it ...
PanCho's user avatar
  • 53
0 votes
1 answer
71 views

point-to-point at IP layer

I was reading one of 5G standards specifying signalling transport https://www.etsi.org/deliver/etsi_ts/138400_138499/138472/15.06.00_60/ts_138472v150600p.pdf and noticed (section 6): The IP layer of ...
Mark's user avatar
  • 101
0 votes
0 answers
22 views

What really a point to point connection means? [duplicate]

I know that point to point connection is used to directly connect between two nodes without any intermediate. But if we take in our world the internet(WAN) , let's say I want to achieve a point to ...
Allan's user avatar
  • 97
0 votes
1 answer
64 views

What is a child tunnel? [closed]

I only heard this term today, but it was explained to me as a point-to-point VPN (so, two routers with a VPN tunnel established between them) and a firewall configured to only allow certain hosts to ...
leeand00's user avatar
  • 331
0 votes
1 answer
384 views

IPCP removing default route when 2 available

I've been stuck on this one in my lab for a while. Any help is appreciated. Here's my CPE edge topology: https://i.stack.imgur.com/a1R6U.png Take the below scenario: I have 2 circuits coming in that I ...
jaaacck's user avatar
0 votes
0 answers
317 views

pinging with iperf vs without iperf

I am running a basic point to point topology on mininet. If I do h2 ping h1, I get such rtt values: rtt min/avg/max/mdev = 0.028/0.067/0.129/0.022 ms But when I ping while the iperf is measuring, my ...
a125's user avatar
  • 101
2 votes
4 answers
95 views

P2P Connections

Hey there I am a noob in the field of networking and I have a confusion: What is the difference between point-to-point and end-to-end connection ?
user60845's user avatar
1 vote
3 answers
243 views

Point to point link with two Internet connections

Thank you in advance for reading this question. I have two buildings, let's say A and B, each connected to the Internet. Devices in A also need to access devices in B and vice-versa. The Internet ...
Giulio Ganzerli's user avatar
1 vote
1 answer
353 views

Passive parabolic 2.4 GHz WiFi antenna to directional antenna repeater

Please excuse my lack of proficiency in this subject. I am just begining my understanding of antennas, bridges, repeaters and the like. I have a somewhat standard situation of two buildings ...
ztrain727's user avatar
0 votes
1 answer
41 views

IPSec point to point Cisco 2800 to Palo Alto firewall

Is there a way to use a cisco 2800 router to create a point-point tunnel to a Palo alto 3020 firewall with support for 6 vlan's on the cisco side. I want to create a tunnel from a new office to my HQ ...
Noriel's user avatar
  • 1
0 votes
1 answer
40 views

Issue with Connectivity Over Next Hop Gateway (ASA) to Point to Point

I'm having an issue routing traffic from a backup gateway on a different ISP, to our main gateway, which uses a point to point connection to a data center, with the majority of our infrastructure. ...
Derek's user avatar
  • 1
2 votes
1 answer
210 views

Is it worth the effort to split up in layer 3 with point to point links? [closed]

I have this technical question. With my family we have a little business. I got to provide internet access to three places, separated a few hundred meters each other. I need to allow to watch the ...
Leandro Alsina's user avatar
24 votes
1 answer
24k views

What is the practical use of a /31 CIDR or 255.255.255.254?

With a /31 subnet, we are left with zero usable hosts. The /31 subnet only has two hosts - one for network and another for broadcast. I am wondering why would someone ever use this subnet.
Bali Vinayak's user avatar
5 votes
4 answers
5k views

Is Ethernet a broadcast or point-to-point protocol?

Theoretically speaking, as far as I know Ethernet was developed to be used as a broadcasting protocol and technology. I guess nowadays it is not being used this way. Since ALL the examples I see refer ...
Ninja Bug's user avatar
  • 603
3 votes
3 answers
663 views

Does a dial-up modem support multiple users?

Since I have never worked with a dial-up modem, I was wondering if it created an internet connection for only one user, a point-to-point connection, or if it also supported multiple users.
Simon Ravelingien's user avatar
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
2 votes
2 answers
3k views

point-to-point VS point-to-multipoint

I readed some articles but I still don't undestand the difference, is point-to-point transmites unicast messages, so point-to-multipoint uses broadcasts ? is point-to-point consist of one dedicated ...
user32700's user avatar
1 vote
2 answers
946 views

OSPF Point-To-Point Question

I've consulted the spec https://www.ietf.org/rfc/rfc2328.txt and have googled to the end of the internet but I'm confused on OSPF Point-To-Point. If I have the following: Link State ID: 4.4.4.4 ...
ist_lion's user avatar
  • 125
1 vote
1 answer
287 views

Network failover from PTP Wirless to VPN

I have a ptp wireless network that spans 20 miles from one location to another. It works great. This is a critical network connection for us. I would like to have a vpn backup in case it should ever ...
ahackney's user avatar
  • 201
0 votes
4 answers
155 views

Point to Point Leased Lines - Do they lay fibres just for that purpose?

Say I have a remote data center in LA and my office is in San Diego. When you say I have a site to site dedicated line between the data center and my office, does it mean fibre lines which do not ...
Karthik Ramakrishnan's user avatar
1 vote
1 answer
535 views

Wifi link over water [closed]

As I've come to understand, water can interfere with wireless data links over vast bodies of water due to the signal reflecting off the water. What alternatives are there to transfer data wireless ...
Simon Arons's user avatar
1 vote
2 answers
106 views

Is PPP used to connect immediately adjacent hosts on a network?

I know PPP is used for point-to-point connections. The Wikipedia article for "point-to-point" says that the term is used to refer to a wire that links only two computers or networks, as opposed to, ...
Zen Hacker's user avatar
4 votes
1 answer
8k views

Point-to-point vs unicast, and multiaccess vs multicast/broadcast?

From Tanenbaum's Computer Networks: Point-to-point links connect individual pairs of machines. To go from the source to the destination on a network made up of point-to-point links, short ...
Tim's user avatar
  • 1,545
8 votes
3 answers
7k views

Point to point LAN using two sonicwalls at seperate locations

We have a two-location business with our head quarters in Arlington, and a remote office in Dallas. Currently, both of our offices are running a sonicwall NSA 2600 and hold a VPN tunnel between each ...
Eme's user avatar
  • 81
1 vote
2 answers
708 views

Netgear switch required default gateway for point-to-point link [closed]

So, my Netgear switch died, and after factory resetting it, I noticed that I was unable to connect to it. The Netgear was configured for 192.168.0.239/24, and I configured my windows PC to 192.168.0....
lobi's user avatar
  • 155
10 votes
4 answers
12k views

OSPF Election with a /30 link?

I have a few /30 subnets connecting OSPF routers over a broadcast capable link.. Should I also configure the interfaces involved in the link to ip ospf network point-to-point? Or does it matter? The ...
Jim's user avatar
  • 813
4 votes
1 answer
301 views

Hub-Spoke topology -- L3 Links use multiple /30s vs single /24 shared?

I wanted to ask the community their thoguhts on the pros and cons of this scenario. I have a few L3 switches with their own independent VLANS connecting to a a set of stacked switches over a port-...
Jim's user avatar
  • 813
4 votes
1 answer
613 views

Point-to-point T1 over fiber using media converters

So I recently purchased some media converters to take our T1 lines, that currently run over copper stretch far past it's limits, over some new fiber we had installed. They didn't work. I am a novice ...
Securus's user avatar
  • 43
2 votes
1 answer
65 views

What could cause a previously working point to point to be accessible from only one side? [closed]

I have two sites that are connected using a pair of Motorola Canopy 5.7 Ghz backhaul units. They have been working for years without a problem but this morning we had a power outage for a few hours ...
ndcisiv's user avatar
  • 21
3 votes
2 answers
260 views

Improving design of a point-to-point layer on top of a byte-oriented protocol [closed]

I want to design a very simple, efficient protocol layer, point-to-point, that uses a UART on a low-end 8-bit microprocessor. It has extremely limited RAM, and only the most simple arithmetic ...
Jodes's user avatar
  • 151
2 votes
1 answer
1k views

Securely sharing access across subnets with point to multipoint wireless [closed]

I might be over thinking things, but I'm lost. I'm trying to modernize our farm. Cable broadband comes into the farmhouse. Spread throughout our multi-acre property, we have a total of 7 buildings (...
bcsteeve's user avatar
  • 143
7 votes
2 answers
1k views

ISIS p2p on Ethernet media

I am looking for technical clarity on why someone should / shouldn’t use ISIS p2p topologies on Ethernet media. Ethernet is a broadcast medium , however if it’s configured as a p2p link with /31’s ...
DrBru's user avatar
  • 1,619
5 votes
3 answers
5k views

When is /31 recommended over /30 in P2P links? [duplicate]

For your average enterprise network, what are the pros and cons for using a /31 mask on point-to-point links with private addressing over the generally accepted practice of using /30? There's really ...
generalnetworkerror's user avatar
15 votes
4 answers
5k views

/31 Point-to-point bitmasks

When is it appropriate to use a /31 network in production, and is using them considered good practice? On a point-to-point link, broadcasts shouldn't be required, so is there any compelling case for ...
knotseh's user avatar
  • 2,535