Questions tagged [switch]
For questions about network switches, the term commonly refers to a multi-port network bridge that processes and routes data at the data link layer (layer 2) of the OSI model.
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Problem with ethernet connection through wall socket - ( Router -> Switch -> Laptops) [closed]
I am new to this forum and I hope that I will get the help that I need.
I am setting up my home network which looks like this:
So I want to connect a router through a switch to all the wall ethernet ...
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Are integrated networking devices, frequently called routers, of the switch type or of a router / NIC type?
Odom,Wendell-_CCNA_200-301_Official_Cert_Guide,_Volume_1.pdf :
many SOHO Ethernet LANs today combine the router and switch into a single device. Vendors sell consumer-grade
integrated networking ...
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Interface is down/down but internet works
I am managing a network at my company. A patch panel provides connections to the switch, which is connected to the router.
One of the connections on the switch does not display a blinking green light. ...
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Switch ping to router with trunk port
If I have a switch port trunk directly connect to a router with the follow scenario below:
-------- g1/0/1 (Trunk) g1/0/1 |------|
|switch| Native VLAN 1 SVI=...
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HP 6125XLG switch in IRF not passing traffic on standby switch
I have HP 6125XLG switches in HP c7000 chassis. I have setup for IRF config (similar to Cisco vPC). I have configured all my blades in LACP active-active and everything works fine. But one of blade I ...
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Cisco VLAN Taking up Entire Subnet
I have a default vlan 1 that has an IP configuration of 10.20.11.0 with a subnet mask of 255.255.255.0.
I have an AP 10.20.11.55 that I want to place on its own VLAN because I intend to make this AP ...
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Why my high speed UDP transmitter send package to all devices after being disconnected from the server?
Here is my network configuration:
My Embedded board(192.168.124.249) sends a 16-byte UDP packet to my PC2(192.168.124.10) each 1ms.
Here is my PC2 received data:
Everything works fine until I ...
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Setting up a local network with access to the internet through a wireless access point
Intro
At work we want to setup an 8 node raspberry pi cluster. The purpose of the cluster is to test different technologies and have a good time.
We cant manage the wifi at work and the only way we ...
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Connecting a hub to my switch bypasses RADIUS/802.1X
I have set up a windows nps server (radius), it works with eap-tls.
In the switch when the authentication is validated the port is passed in vlan 100 and when it is refused it is passed in vlan 101.
...
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Cisco switch ios update without change license
I need the following ios switches to be updated to the latest "license-free" version to fix vulnerabilities:
C3560CX-12pd-S
C3650-48PS-E
C3850-12S-E
C3850-24T-E
C3850-12S
I didn't find any ...
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dot1q L3 router sub-interfaces and L2 switch ports
I have a router with multiple L3 sub-interfaces. On the other side I have a L3 switch (Nexus 9K) that I'd like to have multiple hosts that are on the switch route their traffic to one of the router ...
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Cisco nexus 9336-FX2 ETHPORT-5-IF_DOWN_LINK_FAILURE
I am seeing following error on 100G interface. (SFP bought from fs.com)
nxos version 9.3.10
2023 Oct 11 00:41:12 spine-1 %ETHPORT-5-IF_DOWN_LINK_FAILURE: Interface Ethernet1/4 is down (Link failure)
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Layer 3 switch SVI and static ip confusion
I have not configured the network yet. Every vlan will have a different subnet. I want to assign ip addresses to the switches on the network from another subnet. How can i provide a default gateway ...
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How do you assign sequential IP addresses to individual ports on a switch? [duplicate]
I am looking for a non-complicated way to set up a network of 50 interchangeable devices such that whenever I plug a device into a specific port on a switch, I will always get the same IP address ...
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Layer 3 Switch IP Problem on Packet Tracer
I set up a network. It contains vlans. I assigned devices ip addresses from different subnets. I have 2 layer 3 switches to communicate them. I assigned switches ip addresses from different subnet. I ...
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Inter-VLAN using L3 switch
There are 3 VLANs 10, 20 and 30 on these switchs. Everything such as VTP, DTP are working fine. The problem is that inter-VLAN seems not to work correctly. IP routing is activated on the L3SW (even ...
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How do layer 2 switches route based on MAC when daisy-chained?
Trying to think about this from a hardware design perspective, if I had to design an FPGA or a uC or something to manage a single port being the gateway port and one or more switched ports for routing,...
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RMA'ed device configuration [closed]
Just wondering what are the methods that you use when re-configuring an RMA'ed device.
Do you manually configured all the script that runs on the device or is there any efficient ways configuring the ...
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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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Brocade 7450 - set MTU to 9000
I have brocade icx 7450.
I already enabled jumbo frames to increase MTU packets on switch.
But unfortunately I am not able to change MTU size of port which I want. When typing after choosing interface ...
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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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Can we have two logging source-interface configured on Cisco Switch?
I would like to understand if its possible for us to have two logging source-interface configured on Cisco Switch:
logging source-interface vlan1 (For syslogs)
logging source-interface vlan2 (For ...
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Switch Configuration - Change the trunk allow VLAN
May i know any service interruption if i issue the command on changing the trunk allowed vlan on both end:
switchport trunk allowed vlan 10, 20, 30 to switchport trunk allow vlan 10, 20, 30, 40
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enable https on Dell Networking N1548P
I am trying to enable https and disable http to make dell more secure. I am trying to generate self-sign certificate with these commands and having this error.
(config)#crypto certificate 1 generate
(...
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Cisco port channel identification through SNMP
on a cisco switch is there any way to identify, through SNMP queries, which interfaces are involved and configured in a port channel?
I did some experiment with commons MIB, without result.
Any idea?
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Does an SDN Controller need to be connected to every Openflow enabled Switch directly? [closed]
Is it possible that the network would still function if the SDN Controller was only connected to one Openflow Switch and every other Openflow switch would be connected to that switch someway?
And if ...
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input discards on Arista 7124SX-F
im seeing input discards on one of our uplink on Arista SW
if i run sh platform fm4000 interface ethernet 22 counters verbose command it is showing smp0DropPkts which is equal to the input discards.
...
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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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How to solve problem with two devices with the same MAC address, connected to the switch?
I have two devices with the same MAC address (don't ask why, I can't solve it by replacing those devices or modifying MACs) connected to one switch. Of course both of them get the same IP from DHCP ...
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Streamlining Network Maintenance : Automated Remote Backups for Lenovo, Force10, and Dell Switches
Can these switches be backed up automatically and pushed to a remote server via FTP?
I attempt to find a way to automate the process of creating periodic backups of switches and sending them to a ...
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Direct connection slower than via switch
My office ISP provides a 1 GBPS connection. When I connect my laptop directly to the router provided by the ISP, and connect to fast.com, I get a speed of approximately 100 mbps.
Our office network is ...
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can a layer 2 switch block dhcp from 1 port, both in and out?
Here's what I want to do: "Wall" is the dhcp server from the ISP. "R" is my internal router. "L2" is a hypothetical switch. "fs" is my dhcp server. I want ...
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Why are connected switches not a good substitute for the network layer? [duplicate]
Unless I am missing something, because switches can be chained together, I am not sure why the network layer is needed. Theoretically, one can dedicate a frame to any MAC address, and assuming there ...
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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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How did ATM switches that were implemented in a core of IP network improve QoS and higher data rate?
How can ATM switch improve Quality of service and data rate just by incorporating them into the core of IP network? What was used in the sore of IP networks before ATM switches and what is used today ...
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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 ...
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Loops in an STP-enabled network - How?
I've got a question about STP/RSTP (it applies to both, but I'll just say STP). If I connect several switches and the STP algorithm eventually creates a loop-free environment, then how can a single ...
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Support for 10GBase-T RJ45 SFP+ transceivers
Support for 10GBase-T RJ45 SFP+ transceivers in modern switches can be a hit and miss. What is the technical limitation as to why some switches don't support them? So far my understanding on the issue ...
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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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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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How is it technically possible for a straight-through cable to work?
I understand why two computers need a crossover cable between themselves to communicate. Without it, the transmit and receive wires are the same on each end, making any communication impossible. What ...
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If there's a NAT-capable gateway between WAN and a switch, why is a switch helpful?
To preface this question, my question is somewhat related to what I'm trying to understand as the difference between layer 3 switches and routers. The main difference between the two is that layer 3 ...
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If your ISP already has a gateway, why do you need another gateway with NAT to come before a layer 3 switch?
Please bear in mind that I am learning and have never set up a network with routers and switches myself. Also please bear this is sort of going to be loaded question because there are multiple layers ...
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cut-through vs store-and-forward switching
Let's say we have a host A that is sending 1bit of data (I know it is impossible practically) at at rate of 1bps to host B. Host A and Host B are connected via 2 switches. We assume that the ...
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How bad is doing a back-to-back connection to do VLAN mapping (vlan-stacking limitation)?
the object sounds like a newbie questions but there are good reason for it in the context of bridge-domains and vlan-stacking.
Here below a picture to give a bit of context
In short I realized that ...
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Cisco Switch vIOS-L2 in GNS3 and CCNA 200-301
I am reading a preparation book for the CCNA Test 200-301. Currently, I am reading a section about DHCP and VLAN interfaces in a switch. The book shows an example of configuring this.
switch# ...
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Make printer in different subnet accessible to other subnet
i am creating a network and i want the printer which is in a different subnet to be accessible by all other subnets. The router network is 192.168.10.0/24 further subdivided into /28 subnets.
The ...
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Palo Alto 440 and FS 5860 Switches -- L2 Loop/Spanning-Tree issue
I have identified what seems to be a looping issue, due to STP not blocking an alternate path. As you can see in the diagram, ports Eth7 and Eth8 on the switches connect to the Active/Passive PA-440 ...
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Bash script to gather serial numbers from list of cisco switches
I have pieced together a script to login to each switch listed in the file switch.txt, grab the serial number and place it with the IP address into the CSV serials.csv. The problem I am having is that ...
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One layer 2 switch in the middle of router network
In general,
The connection should be like
PC---SW---ROUTER---Many ISP router---Router---SW---PC
so the packet will be from
layer 2 ---layer 3---layer 2
What if I put one layer 2 switch in the network
...
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