Questions tagged [network]
For questions about Networking that includes design, and use of a network, the physical cabling, hub, bridge, switch, router, and so forth. Anything in relation to networking and its technologies.
809
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How do you balance between providing a seamless user experience and implementing robust network access controls? [closed]
How do you balance between providing a seamless user experience and implementing robust network access controls?
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2
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25
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How to interpret traceroute results? [duplicate]
So, I have a task which involves calculating the RTT to a destination. Now, I have done it using ping. But, I need to do it using traceroute too. From, my knowledge about traceroute, I know that it ...
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19
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2 Cisco ASA Firewalls - TCP SYN FLOOD
Problem
We have 2 firewalls, a DMZ firewall and another firewall named FW1 in a testlab. Both are CISCO ASAs. The shared services and jumphost are behind the FW1 firewall. The 172.28.208.0/24 subnets ...
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10
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What ip6 address do I give my friends so they can get to my computer? [closed]
I want to share my ip 6 address to my friends so they can connect to my computer.
So I am a linux person.
I type ipconfig in my termial and I get:
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>...
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6
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Azure resources with dual region network configuration [migrated]
I'll ask this question as Azure specific, but could provide to any cloud provider ( AWS , Google Cloud , etc. )
Is it possible to design Azure networks in such a manner that a single resource is ...
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1
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54
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Get all reachable IP addresses within a private network [closed]
Is there a way to get all reachable IP addresses within a private network. I know that we can get all active devices' IP addresses within same subnet using arp.
I was wondering if something similar ...
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1
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47
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How to use 5 static ip addresses with virgin media broad band
I have installed virgin media business broadband and the package comes with 5 static ips. These IP are GRE tunnels from the HITRON router to virgin.
the IP addresses are for example
66.66.66.65 - 66....
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1
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36
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Simple question about NAT [duplicate]
So I am learning about NAT. I understand that it changes IP from public>private and vice versa. From my understanding, when a packet or info gets sent to the public ip towards the private ip, ...
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14
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What is the practical use of bandwidth-delay product? [duplicate]
It's given that the bandwidth-delay product defines the number of bits that can fill the link; while the sender can send (1+(2 * Propagation Time / Transmission Time)) units before getting ...
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12
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Just testing a 2 pair twisted internet cable having 4 wires [duplicate]
I am having a problem with my 2-pair ethernet cable. I have connected the 4th, 5th, 7th, and 8th pins, but the 4th pin is not working. I have checked the RJ45 connector and the cable with a multimeter,...
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How to handle routing with overlapping ranges as general concept?
An existing network managed by a 3rd party contains routers of the same subnet (in this case 192.168.0.0/24) and is connected to a central infrastructure using a VPN tunnel. All connections are force ...
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1
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56
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No access to internet via DHCP, but works with manual IPs
My DHCP server was giving out IPs in the range 10.0.0.1/24, but I ran out of usable IPs, so I changed the subnet to 10.0.1/21 to have more available addresses, however I am now having a weird problem:
...
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2
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142
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Simulating Network Infrastructure on GNS3: Switch Stacks and Configuration Challenges
I'm seeking guidance on simulating a network infrastructure using GNS3, specifically focusing on the challenges related to switch stacks. The network environment consists of multiple physical switches ...
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14
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How & When does User equipment gets to know what is the SFN(system frame number) during Handover process?
Take an example:
UE camps to an LTE network let's say LTE B66. Network sends RRC reconfiguration to measure the neighbor cells.
UE scans & sends measurement report reporting neighbor cells. Now ...
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1
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33
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RIP v2 Network Command
I am comparing the Boson ExSim Lab to the Neil Anderson's Lab on RIP.
On one of the labs on Boson ExSim, it asks to configure RIP on the routers, all of which are on some form of a 192.168..0.0/24 ...
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2
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80
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Can wrong SFP module damage equipment?
SFP modules convert electrical data from the equipment to optical signals. There is no incoming power surging from an optical port to damage the equipment according to my undarstanding of fibre optics....
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2
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Switches in chain topology for ~40 devices
I am currently looking at a network topology consisting of ~40 DUTs. In this network, there is no hierarchy (like access core and distribution), and all the switches are connected in chain topology. ...
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1
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Alternative to the Internet for a local network
Suppose we are designing a network and we want to isolate it from the Internet. Are there any alternatives to the Internet for a local network?
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10
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Timing requirements in OPEN RAN/ORAN
I am looking for information about timing requirements in Open RAN, fronthaul, DU-RU.
What are the timing requirements?
Can I “ignore” it? In which scenarios can I ignore it?
What are the timing ...
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1
answer
64
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Router to Wireless router (Packet Tracer)
Hi, Can anyone help why I can't ping from my pc in office network to my laptop in guest network or wireless network. It is possible to ping from guest network to office but failed vice versa.
Main ...
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1
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39
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Network exposure function in 5G core network
I want to integrate Network exposure function(NEF) to another core network functions . Is their any one help me how to do that?
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How do you create multiple classless networks out of single IPs, then divide them into networks and subnets? [duplicate]
I'm having trouble figuring out how to create 4 classless networks out of 10.0.0.0/24, then dividing it into 4 equal subnets.
I'm also not sure how to create 5 classless networks out of 20.4.3.8/16, ...
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2
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How to connect HP 2930-8g to the cisco CBS350-8g switch unmanaged?
I want to Connect HP 2920-8g to CISCO CBS350-8g. I tried HP sfp ( J4859D ) in HP and CISCO working fine,
with HP and Cisco switch and cico sfp (MGBLX1) and programmed
switch(config)# allow-...
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1
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101
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Calculate Ethernet frame [duplicate]
I have a couple of confusing problems on my course, so I decided to ask here.
The question is:
What is the minimum size of Ethernet frame for a network speed of 100MBps* and maximal segment of 100 ...
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1
answer
213
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Understanding IPv4 model of operation
I'm new to networking and reading RFC791 about IP protocol specification and got some question regarding the paragraph 2.2 Model of Operation. Here is what is discribed:
The internet module prepares a ...
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1
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39
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Recognizing the next protocol in MPLS header
How can I know what is the next protocol in MPLS header?
I do know that MPLS header does not provide any information about the next protocol,
But I somehow need to know how to recognize it, as I am ...
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2
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25
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link between firewalls and cpe internet dedicated or on internal vlan
We have 2x datacenters in which we have 2x firewalls and 2x internet routers.
to allow the firewalls to reach both the internet routers there is a dedicated line between the datacenters
For budget ...
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3
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99
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If all subnets are a part of same vlan, then the network segregation using subnets does not make sense
This is what we know about subnetting.
By dividing a network into subnets, you can separate different departments, locations, or security zones, creating distinct broadcast domains. This segmentation ...
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2
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45
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Unsure about our current setup + routing issues (Diagram attached) [closed]
I work for a medium sized company, we have around 52 computers. The company grew quite a few times meaning switches were bought and attached to meet the demand of new employees/machines.
To sumarize, ...
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1
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Access multiple networks via one managed switch
We have a kind of granulated network structure. At the moment I have two network adapter connected to my system for two of the network areas. The Systems in network A and network B should not ...
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1
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Cannot enable link. Why?
I have the following setup:
I'm unable to enable Fa0/5. The switch configuration for that port is correct
No configuration has been made on the server side:
Assigning Ip adresses has not solved the ...
- 295
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1
answer
58
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Understanding the Role of Member Device in Cisco 3850 VSS Stack
Clarifying the Role of Member Device in VSS Domain Configuration
I am trying to understand the role of a device in a VSS domain as a "member."
What does it mean for a device to be a member?
...
3
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1
answer
152
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Do Directly Connected Routers Need Routing Protocols For DHCP Relay To Work?
Let us say that we have R01, R02, and R03 connected to each other, and each of them is connected to a different subnet SUB01, SUB02, and SUB03, respectively. R03 is set up as a DHCP server, and DHCP ...
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1
answer
132
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Why No Ping When Use Static and RIP in This Network?
I am a learner. I learned somewhere that we could use static and dynamic routing in the network.
I built the simple network shown in the attached picture.
I configured router8 with static routes to ...
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1
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In what situations is MPLS label erased from the top of the label stack in MPLS?
What are other processes that MPLS/IP routers can do with, or to MPLS label stack?
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How is Control plain in MPLS used for creating label table, and IP routing table?
How is Control plain in MPLS used for creating and maintaining label table, and hold protocols for creating and maintaining IP routing table? Is IP routing table in MPLS located in Customer edge ...
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1
answer
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How can GMPLS unify signalization plain of all telecommunications network technologies?
In what way can GMPLS do that unification of signalization of network technologies, by hardware, like MPLS switches, or by network protocols? And what is the role of optical networks in GMPLS? Are ...
2
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1
answer
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6125XLG blade switch IRF configuration in c7000 chassis
I have HPE c7000 chassis with 612XLG switches. I am trying to setup IRF between blades switches. somehow i am not able to bring up irf-port interface.
In 6125XGL TE1/0/17-20 ports are internal ...
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Is is possible to create a network using supernetting like this? [duplicate]
I need to create a network in the range 200.1.x.x and split it into 3 LANs which consist of 1250, 1750, and 1500 hosts respectively. This network should be able to expand to a total of 56 networks. ...
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1
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174
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Multiple GRE tunnels towards single host using anycast IP
I'm trying to build the following network architecture:
Where clients try to connect to a backend server (e.g. SSH) by using a Public Anycast IP adddress (1.2.3.4), that routes the client to the ...
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0
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12
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Routing vs Forwarding [duplicate]
What is the difference between routing and forwarding?When the network is a packet transfer network I dont see the reason for routing since forwarding a packet between nodes requires a routing ...
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162
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What is PPP and why does it not have a MAC address?
I just wanted clarification on what exactly PPP is and why it does not have a MAC address due to having seen that under a response to a question of how routers transverse packets to their destinations....
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3
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399
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Finding what interface a MAC address is assigned to
I am currently on a Cisco 9410 and I ran a "sh mac address-table | i 5619" and I received
" 13 fc3f.db4d.5619 DYNAMIC Po1".
I just need assistance with finding what port/...
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18
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I am getting Confused with host bits and Subnet bits [duplicate]
So i am playing with Cisco CML. I made up a random address 3.0.0.0/8.
I wanted to split up that subnet into 4 subnets, So 2^2 = 4. I kinda got confused along the way. In my train of though if we use ...
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2
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86
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how do 2 different network communicate with each other
Suppose we have 2 networks with 3 PCs in each. As I understand, they can easily have the same IP addresses, but routers have different public IP addresses(e.g. here 158.127.10.3 and 158.127.10.4). So ...
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31
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Wireshark filtering, wpa2 handshake type value and other types
I am capturing a wpa2 handshake with wireshark, and there is the type value of 03 which is a key I wonder if this type is constant for wpa2 handshakes, also the value of other types, if there were to ...
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2
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78
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Is there parallelism in packet-switching?
Let's say there are two hosts h1 and h2 separated by a switch w set up in this manner
[h1]----link1----[w]----link2----[h2]
If we are to send a file divided evenly into two packets from h1to h2 using ...
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2
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64
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Ways to connect 2 buildings via networking [closed]
I am not really sure if this is the right place to ask this question.
I have an assignment in which it gives the following scenario.
There're 2 buildings A and B. The distance between building A and B ...
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1
answer
227
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The relationship between IP address and AS number
I've recently been looking for the IP prefixes originating from a specific AS. And there are a few questions I'd like to get confirmed.
We can register IP addresses and ASN from RIR. But where can we ...
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2
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75
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Possibility of transferring data over the same-level networks, rather than the higher-level network
This is a silly(maybe interesting) question.
Assume four ASes are connecting to the Tier 1 network(A, B, C and D). B is peering with C and D. A is close to B, but too far from C and D to make peering. ...
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