Questions tagged [switch]
a device that bridges network segments, operating at the OSI link layer level.
286
questions with no upvoted or accepted answers
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Traffic not traversing VLAN over multiple hops?
I am configuring a new Cisco edge switch stack, and temporarily I am trunking this stack through another edge switch back to my core switch (no spare fiber pairs to use to trunk directly). This is ...
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31
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VLAN 'Bridging' for Core on Multiple Networks
I think I have a very unique use-case that I need help with since I am not a network engineer. Here's the layout. I help operate a gaming floor network for a Casino. The thing that I noticed right ...
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145
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Virtual Switch High Network Receive Traffic When Idle
Having an issue where my network adapter is constantly showing relatively high Receive traffic when system is completely idle.
This happens after Hyper-V creates an external Virtual Switch.
Is this ...
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31
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Cisco SG switch interface statistic length of time
I am trying to determine the length of time the interface statistic screen is recording for the bytes columns on my Cisco Sg300-52 switch. I went to the cisco website for documentation but the page ...
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2k
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Ping between hosts with separate subnet
I have two hosts with different subnet
Host1(Linux) has Ip Address of 172.29.1.xxx
Host2 has IP Address of 192.168.1.xxx
Host2 with 192 address can ping the host1 and all the servers with 172 ...
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Need feature name: ethernet switch recognizes manual cable disconnect and shuts down the port
Once in a hospital's radiology department, we had this nifty security feature -- I just cannot remember the proper name to succeed at various search engines:
If a host's ethernet cable was ...
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348
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How to ssh into system connected to same network switch?
I have a few systems which are connected to the same network switch. All of them are running linux / Ubuntu 18.
I want to remotely access one machine to another through ssh.
That is, if I'm ...
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336
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Do managed switches ping on all VLANs by default?
Amateur network admin here. I'm trying to create a link via VLAN between a VOIP PBX and an internet router. It's a large installation, so there are 4 managed switches between the two endpoints. I ...
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698
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Networking, MST between HPE and CISCO switches
can anybody help with this issue?
I have 2 HP Procurve switches 2650 and one Cisco switch 2950 connected together like this:
HP MST root (prio 16384) <-> HP IST root (prio 24576) Trk1 <-> Po1 ...
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2
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435
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Tag/Trunk Cisco 350x
I am pretty new on the networking and cisco world.
As far as I learned, tagging is just assigning a port to a vlan, and, as per definition, trunking is assigning a port to more than one vlan
I am ...
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405
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Troubleshooting Network Switching Connectivity
I am managing a network that sporadically has network outages that present as follows
no TCP or ICMP traffic is working between any devices on the network. Two computers with valid ip addresses are ...
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54
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Opensense - Uses route but is directly connected
I have the following configuration: Network Architecture
Router 1 (192.168.5.1/28) with Network 192.168.1.0/24 (Opensense)
Router 2 (192.168.5.2/28) with Network 192.168.2.0/24 (PfSense)
Server 192....
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563
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Web Access and broadcast issues for HP Switch V1810-48G, PK.1.40
I have some trouble with an HP Switch: HP V1810-48G PK.1.40
After few days after the reboot, its LAN webinterface becomes unaccessible, its IP address not pingable anymore and it starts to block some ...
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59
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Does a Network-Switch changes TCP-Packages?
I am investigating a network issue, where our driver(s) under VxWorks7 is generating errors-messages like:
"Notice: resend delayed, network driver has not finished the previous TX attempt on this ...
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475
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No Internet access with DHCP Relay VLANs
I have a router that I can't manage (it is an ISP thing). It is directly connected to a T2600G-18TS (let's call it X) switch. The X switch has a static IP assigned from the routers IP range. I have ...
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2k
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Arista 7048T-A Enabling ethernet ports, interface does not exist
On the switch I'm trying to enable the ethernet ports for internet access to no avail. After setting the DNS, Default gateway I'm now trying to enable 2 ethernet ports on the switch (port 1 and 2 but ...
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250
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switch Dell 3424P SSH enable mode failed
I have a Dell 3424P switch and I want to administrate it only by console and ssh.
I can connect to the switch in ssh but I can't elevate my privileges. When I type enable, it responds :
Cannot ...
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221
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How to access a device connected in another switch, which is in another subnet
How are you? I hope you're doing well.
As you can see by the tittle im facing a problem trying to access a device, a printer to be more specific, in another swithc which is in another subnet. This ...
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100
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Why would a Linux device be ping-able using a direction connection but not ping-able when plugged into a switch?
I’m currently using a linux based device with an NTRON 716TX managed switch (manual here). I’m running into an issue where I’m unable to ping the linux device through this switch, even though all my ...
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1k
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reset password on allied telesis 8000s
I have around 10 of these switches. I should reset the passwords on these. I can't find a solution for this. The company told me to do it via the bootloader, but I don't have access on it. Is there ...
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106
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Multicast UDP traffic flow in the distribution layer using VSS
We have a campus with 2 different building with few floors on each building and 100's of systems in different VLANS at each floor. At the Access layer we have Layer 2 switches at each floor connecting ...
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175
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Networking problems since new internet gateway installed
This case is a bit weird to understand, so I decided to ask here and see if someone can give me some guesses about what can be the root cause of the issue I'm about to describe.
Our company has 2 ...
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309
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Cisco Switch: Limit mgmt access to specific VLAN
I want to limit the access to the management console of my cisco switches. My idea was to only allow clients of a specific vlan to access it.
In my current physical setup I have three unstacked cisco ...
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63
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Moving from a dual ISP set up to a single ISP facility with mixed IP handling (DHCP with Static IPs)
First time posting a question here, please bear with me.
I've been assigned to manage the migration of all our computers and servers from a facility where we have 2 ISP's to a facility where we're ...
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7k
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EdgeRouter X as VLAN-only Switch
The Ubiquiti EdgeRouter X (ERX) has a switching chip on board so that it can be used as an L3 switch instead of as a router.
I have another router, we'll call it router-core, which is serving an ...
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161
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intermittent drops on switches
I have a lab environment with 7 48-port switches (Ubiquiti ES-48-500W).
All of them are connected to 3 16-port aggregation switches (Ubiquiti ES-16-XG) via fiber.
All of the switches are brand new, ...
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1
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183
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HPE 5820X Configure L3 Routing
I'm having some trouble configuring L3 routing on HPE 5820X. This is the first HPE switch I've worked with and would like some pointers on the commands to get this working. So far I have configured ...
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25
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Setting Up 3 Network Printers With An Old Router Connected To Another Router
I am trying to setup 3 network printers for a client. He has an Xfinity modem / router, and there is only 1 free ethernet port available on the router. To avoid buying a switch, I used an old router ...
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244
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Connect 3 L2 switches to router
I own:
3 switches (layer 2, managed, 24 ports) model Zyxel GS1920-24HP
1 router model Zyxel USG 310
My network is segmented into 10 VLANs (1, 2, 3, 4, 5, 6, 7, 8, 10, 11), the central router ...
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2
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294
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Cannot ping a server. Wan over vlan on Cisco/Linksys switch
I have an old, but mostly unused Cisco/Linksys slm224g4s switch and Mikrotik B2011UiAS-RM router. On a switch I've configured three vlans, two for WAN1 (id:3) and WAN2 (id:4) and third for LAN (id:2).
...
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273
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split lc connection to fit two SMF transcievers?
I got a cross connect in a data center patched into my patch panel,
I'm using SC to LC cable (SC from patch panel to LC into transceiver) to connect it to my switch (Arista 7150s).
I just bought ...
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4k
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Serial port console connection to Network Switch
I have a network switch (an HP Procurve) that provides a command line interface that can be accessed via a direct serial port connection. The direct connection is done using an RJ45 connector on the ...
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35
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vlans for corp and guest networks SSID broadcast
Cenario:
Two separated physical connections:
01 Corp (Internet, shared network resources, etc)
192.168.10.x
02 Guest
192.168.1.x (Internet only)
AP: ZyXEL NWA3560-N
Lab switch: HP 1810-24G
What I’m ...
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524
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Avocent Cyclades Serial Switch Disable Telnet Login message
Whenever I open a telnet connection via PuTTy to a serial port on my Avocent switch, it will print something like the following message:
Sharing connection with other user(s): 'NONE@525', 'NONE@546'...
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718
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DHCP snooping prevents client server from receiving IP
The issue that I am experiencing is that DHCP requests can't be delivered from DHCP server on sw1 to DHCP client server on sw2 when DHCP snooping is enabled. Client servers on the same switch as DHCP ...
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520
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WDS server without DHCP server (DHCP from Cisco switch 375)
i want to create a WDS(windows server 2012) server in my environment
my environment divided in multiple subnets DHCP provided from a Cisco switch 375 not from a windows server
is it possible to ...
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1
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65
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Unable to move devices outside of current LAN Scope due to IP Conflicts
We have a few smart Netgear switches that all of our LAN devices plug into.
Currently we are attempting to move a few of these devices into a DMZ on a different Subnet. The DMZ and Lan are setup on a ...
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438
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Multiple subnets, multiple DHCP servers, 3 access points, no VLAN
Good day folks,
I was working at a customer site which has an odd network setup.
The WAN connection is connected to an 8 port dumb switch. The WAN modem provides DHCP for the 192.168.2.0/24 ...
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1
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2k
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Cisco SFP module detection
I have 2 Cisco SG500X switches that I want to stack over 10G fiber. I have two 3rd-party SFP-10G-SR modules which I'm having trouble with.
Should SFP modules be detected by the switch when plugged in,...
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74
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Comunication via vlan interface in general mode
I'm trying to understand egress tagged rule in the context of general mode port in vlan. I have an Allied Thelesis AT-8000S switch with two PC connected (PC1<->e1, PC2<->e2). Both PCs have ...
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2
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1k
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Exactly how transceivers talk to and be recognized by Arista switch?
Arista 7500 Series router
For a transceiver to transmit traffic, it has to linkup on a switch. Even before that it has to be recognized by the switch.
I found several transceivers that work on one ...
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1
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1k
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Mac address not entering mac table of a huawei s5700 switch
We have a very strange problem, where certain ports refuse to learn the mac addresses of their hosts. For example host A is connected to switch S1 on port 0/0/30.
Each packet to host A results in a ...
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106
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Does PVST allow to bridge two VLANs?
I am having a Switch
Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version
12.2(50)SE4, RELEASE SOFTWARE (fc1)
I have interface FastEthernet0/1 up to interface FastEthernet0/48 are ...
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1
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144
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Server connectivity to 2 different upstream switches
I have the below questions with regard to server connectvity to two different upstream switch.
Q1: In one of the blogs i read that many server NIC drivers support LACP as well for providing a port ...
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70
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Ethernet switch forgets me too soon
My workstation is connected to one of the corporate ethernet switches. There are multiple VLANs. ipv4 broadcast and ipv6 FF02::1 only work within current VLAN.
I have enabled wake on lan and waking ...
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113
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Cisco 2960 switch mode access cannot assign IP address for virtual machine
we are testing the VMware setup in our lab. We have a 2960 switch connect to a PC. Inside the PC, we have VMware workstation 11 installed. When I setup the NIC of Virtual machine (Win7) as NAT, it can ...
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31
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Why are there different types of bond configuration policies in linux, instead of one that can give a combined throughput and fail-over configuration?
I am confused and not able to understand exactly the actual concept behind it. At switch level, what happens that prevents to use one globally accepted bond configuration policy?
And I don't ...
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59
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tenants are building their own server in the share office, how do I give out specific ports to them?
Scenario:
A couple of companies are sharing an office as a tenant.
Since I don't have much knowledge in networking, I'm not quite sure how to configure the setting of switches and routers.
However, ...
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949
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HP 1920 - VLAN 2 issue, no internet
I have some issue setting up my HP 1920 Managed switch with layer 3, I do not have internet on VLAN 2 or 3
What I would like to is following:
One ISP with two separated networks.
I have following ...
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1
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2k
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Mikrotik Switch Trunk (Tag All) Port
Trying to configure switching on Mikrotik CRS125-24-1S.
ether24 is connected to another switch port with tag all (trunk) mode activated
ether23 is connected to my ESXi host
I just want to add this ...