Questions tagged [networking]

For questions about networking in general. Any question about all on topic network devices can use this tag.

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How to divide an IPv4 network into three separate networks? [duplicate]

I have an address of 192.168.100.0(/24) and I need to separate it into three networks using VSLM. One needs 70 hosts, another needs 30 hosts and the last needs 25 hosts. What is the most efficient way ...
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Ipv6 link-local/multicast issue [duplicate]

When you ping a link-local address why is the destination (in packet tracer) to the solicited-node multicast address of the host and not the (FE80) link local address ? I understand that it needs to ...
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44 views

There have DHCP relay for different vlans issue in my MX-480 router

I have the network topology: in this topology, in my router, I set the DHCP relay: admin@MX-RE0# show forwarding-options dhcp-relay server-group { smart_group { 103.57.xxx.19; } } ...
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How to calculate bits needed for host, bits left for network, number of available networks? [duplicate]

I have a class b address of 145.14.0.0 I need to create a scheme where each subnet accommodates 2259 hosts. can someone explain step by step how to do that
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1answer
70 views

Why computers can communicate on different networks and routers won't?

I have a problem that I can not understand it myself and I need some help. I'm doing a kind of challenge, well network challenge in cisco packet tracer. I have a .pka file that stands for Cisco Packet ...
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29 views

CISCO Packet Tracer

Does Cisco Packet Tracer support config memory and config network command? If no, then do enterprise routers still support it?
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1answer
58 views

What is POF in networking?

I was reading some academic articles about networking when I read "protocol oblivious forwarding (POF)" which I tried to google it but I got nothing to simplify it. Please, what is protocol oblivious ...
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1answer
39 views

Router Standard ACL

I was configuring Standard ACL on router 1841 on Cisco Packet Tracer with the help of command access-list 1 permit 172.16.40.3 0.0.0.0 and access-list 1 deny 172.16.40.4 0.0.0.0 and then I applied ...
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49 views

Why the TCP traceroute map jump over many routers? [closed]

I can not understand this TCP traceroute map: This is a TCP traceroute from Chongqing,China to LA,USA: the 219.158.3.146 is Beijing Unicom the 219.158.96.26 is LA Unicom. the path is this: Why the ...
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79 views

Set up multiple WAP4410N AP with same SSID

We are facing a WiFi connection issue in the prod environment at client place (a big hall, around 200ft x 150ft). Details: Environment: 4 Cisco WAP4410N Access points mounted on the pillars in the ...
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1answer
27 views

Connectivity problems in a topology [closed]

I cannot identify any network problems in the following topology. https://i.imgur.com/eyUEzvz.jpg Any help in identifying problems would be appreciated, and I would be happy to work on them.
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27 views

Can't connect to network printer while other's in the building can [closed]

I'm unable to connect to the shared printer in our business center. Every unit is on the same wired internet. The instructions state that I should do Run->\10.10.41.11 but then Windows says it couldn'...
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48 views

Why write a static route, it can communicative to each other in my scene?

I have a network topology like below: In Switch0, Switch1 and Switch2, I added the a SVI. However, it is not possible to reach from one SVI the other ones. Now, if I write the following static route ...
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1answer
180 views

Can't ping across router with two interfaces [closed]

This is the topology I'm working with. In the router, e0 is ether1 and e1 is ether2. LAN_A has a maximum of 96 clients. LAN_B has a maximum of 48 clients. VPC_LAN_A: ip 192.168.10.1/25 192.168.10....
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1answer
270 views

Unable to configure SR-TE (Segment Routing Traffic Engineering) in CSR 1000v

I'm trying to configure SR-TE (Segment Routing Traffic Engineering) in CSR 1000v IOS XE 16 using the official tutorial in here Segment Routing Traffic Engineering (SR-TE) I have the same topology in ...
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26 views

Why maximum length of IP、TCP、UDP packet is not suit? [duplicate]

From many tutorials, I get follow knowledge(maybe I'm misunderstood) : maximum of an Ethernet packet is about 1500bytes. maximum of an IP packet is about 65535bytes. maximum of a UDP packet is 65515 ...
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1answer
104 views

Can not add a Physical port into LAG

Using SuperMicro network module, which related to Intel SDN product, the command PDF . and the Web GUI manual. there I have qe57, qe61, qe65, qe69 four upstream ports, I want to aggregate them to one ...
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1answer
830 views

In an ESXi, how can VMs communicate if they are in different vlan? [closed]

I have an ESXi and create two vlan networks, vlan 10 and vlan 20. VM1 connect to vlan 10 and VM2 connect to vlan 20. How can the two VMs communicate?
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2answers
114 views

What's the inline monitoring?

What's the inline monitoring? I searched wikipedia and google but do not find the meaning of inline monitoring for network. who can tell me the definition of it? I can get the definition of passive ...
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2answers
47 views

Switch Operation Beyond VLAN Segmentation

What are the other operations performed by a switch which are outside the VLAN's boundaries. Is Logical (VLAN) Segregation is exactly same as breaking a switching network physically via a Router?
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1answer
69 views

Mac Address Flapping and switches

Is mac address flapping the reason why switches don't exchange switching information just like routers exchange routing information?
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1answer
38 views

VPN server acting as a client for another VPN server [closed]

I was wondering if it's possible to have a VPN server that goes though another VPN server. Here a scenario that might explain my idea better: I have 4 computers 'A' - My Windows machine 'B' - My VPN ...
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1answer
11 views

Is it possible to point a static IP from OVH (or any provider) to a system with a dynamic IP? [closed]

I have a few spare IP addresses from OVH, I'm wondering if it is possible that I can run something on a the server or even my PC (at home) to make the IP address from OVH always point to my routers IP ...
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0answers
7 views

When each device on the network has its own IP address why we need data link layer address or MAC address? [duplicate]

I am totally confused about why we need a data link layer when we have a network layer
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29 views

Is there any logic to how IP address topology is organized globally? [duplicate]

IP addresses are designed as 4x8 = 32 bit identifiers, 000.000.000.000, representing a hierarchy of organization. Each level in the hierarchy can store 2^8 = 256 networks. In theory, this design can ...
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9 views

Please solve this question [duplicate]

b) An organization is granted the block 211.17.180.0/24. The administrator wants to create 32 subnets. i. Find the subnet mask. ii. Find the number of addresses in each subnet. iii. Find the first ...
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4answers
3k views

Can we run the Internet on circuit switching?

Generally we use IP and ATM for data communication and can we use circuit switching for data communication ? Can we use circuit switching for Internet ?
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2answers
63 views

Data Transmission Rate Video Stream

Given a web-server with an sd-card (storing 720p (7.2 Mbit/s) videos and 800 Mbit/s read-speed) and a wireless interface with 1200 Mbit/s transmission speed. I have to know how many clients can ...
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0answers
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Networking configuration and submitting [duplicate]

The 131.181.112.0/22 network is provided. a) Determine the number of subnets that can be obtained with that IP address b) Determine the number of available hosts on that network. c) Design 6 subnets ...
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1answer
44 views

Binary to decimal conversion question [closed]

If Decimal 15 = Binary 00001111 can it also equal 01111 ? If not why? sheet with conversion decimal-binary
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1answer
53 views

What are Cisco Devices? [closed]

I am doing CCNA online and not for a minute have I not failed to come acroos the statement 'Cisco Device' What exactly are cisco devices ? Please don't tell me 'Devices that use Cisco iOS' Can you ...

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