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Questions tagged [switch]

a device that bridges network segments, operating at the OSI link layer level.

Switches (in the context of this site) are devices with multiple network ports, which allow interaction between all devices connected to these ports.

Basic switches operate at the data link layer level (in TCP/IP networks) and forward packets based on the link layer address in the packet headers. They are different to hubs in the way that hubs generally broadcast incoming packets to all other ports, whereas switches keep tables of link layer addresses they have seen at specific ports and only forward packets to the relevant ports. Basic switches are also known as layer 2 devices.

Higher grade switches can include functionality at higher layers of the OSI stack. This can range from IGMP snooping (for multicast support) and VLANs through to NAT, VPN, firewalls or even application layer functionality (web caching or proxying). Such switches are known as multilayer devices.

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Do nodes in a single-switch ethernet network governed by dnsmasq communicate directly, or via the router?

Variations on this question exist, but I cannot be certain my exact situation has been asked. I am setting up a simple ethernet network that looks like this: On Node 0 ("rpi1") I am running dnsmasq as both a DNS and DHCP server. Here is a section…
Magnus
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Can I segment my network based on two different criteria?

I work at a school with several campuses and I would like to segment my network with VLANs. So, phones on one vlan, printers on another, etc. I was thinking it would be nice to segment by campus, as well. That seems like it would be some sort of…
John Beavers
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How can i connect OPNsense router to Mikrotik Switch

I've encountered this situation where I'm to access the switch from my router: Here is what i have set: Lan (DHCP 192.168.50.1 , DHCPIPV6) WAN (DHCP 192.168.80.1,DHCPIPV6) Mikrotik (DHCP 192.168.80.1,DHCPIPV6) [connected to Mikrotik network…
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How to configure IP address to an Huawei AR158E interface?

In my work we saw one old Huawei AR158E router gathering some dust and I'm playing now with it seeing if I can give it some new purpose... So far I have been able to configure some VLANs and a VLANIF in Ethernet0/0/2 and works flawlessly... But I…
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kvm bridges: disable promiscuous mode, is it possible and is it wise?

I am a little confused as to if this is the right question, but I have a number of KVM hosts with multiple bridges on (sometimes)bonded interfaces, and each bridge is mapped to its own distinct VLAN. (A KVM host can have possibly a router guest, a…
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Layer 2 Network vs Layer 3 Network

I am very new to networking world and forgive me if its a lame question - My question is even though network operate using all 7 layers present in OSI model, often I hear people asking is it layer 2 network or layer 3 IP based network. Why is that? …
Dave
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Can a VoIP or an L2 switch prevent a PC from accessing a network printer under 2 VLAN circumstances?

My organization's network topology goes like this: PC -- VoIP -- L2 switch (no IP address, only performs L2 switching)--Network Printer Also, the same L2 switch is connected to an L3 switch for access to the outside network. Furthermore, the VoIP is…
Mike Land
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Rsyslog unable to receive syslogs from two or more switches , error in rsyslog configuration file

I am trying to send syslogs from routers/switches in a production environment to a linux server which has Rsyslog installed on it. Its working fine as long as rsyslog config file is set to receive logs from one switch, as soon as I am making…
Zius_123
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Connection Two sites

My office is moving and the big concern is about networking. The move will take two months but they need both sides to be operational during that time. The big challenge is our old PBX. Do they need phone connectivity in both offices for these…
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Linux server as an unmanaged switch

I have a small Ubuntu x64 server, which provides dhcp, naming, file and such services to my home network. It's simply connected to unmanaged SOHO switch laying next to it and just works. But, it has unused 4xGbE i350 NIC card in PCIe slot and I had…
Ren
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Cascading Dell network switch with other brand: Network failure

I came up this puzzling issue today. Within the rack there is a Vigor3900 router connected to a 48port Dell switch. I cascaded it to a 24port unmanaged TP link one since we needed to cater for about 65 network plugs. No VLANS, no configuration in…
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How to change cisco 3750 specific port MTU to 9000?

How to change cisco 3750 specific port MTU to 9000? I do not want to set it as a system global command for all ports.
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SNMP Network traffic difference between ifInOctet and ifHCInOctet

I try to monitor some Cisco 2960x Switch devices and I know there are the SNMP OID's ifInOctets (32-bit Counter) and ifHCinOctets (64-bit Counter). Can someone explain me whats the difference between those Counters and which one I should use for a…
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Configure NICs as a switch in ESXi

ESXi 6.7u3, my host has 6 nics, I use one for connection to the network but i want to configure the remaining as a normal dumb switch, help needed. It seems that this should be rather straight forward but either it's not possible or i just can't…
Christopher England
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How do I set up multiple interfaces on Windows Server 2019?

I am working on setting up a small vm host cluster and I have the following setup : Windows server with multiple network interfaces Aruba 2930f switch Switch is connected to internet (gateway 192.168.0.1) I would like to configure multiple subnets…
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