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

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25 views

Setting Up VLAN on Dell Switches

I need to create a vlan on a dell switch. I'm brand new to vlans, and have a few simple questions. I have the MAC addresses for devices that are plugged into the switch, how can I figure out which ...
2
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1answer
53 views

How to install and run Puppet Device in order to configure Cisco Switches and Routers?

According to this documentation it should be possible to configure a Cisco Switch by using the Puppet Module Device. Where could this module be found? Is this module restricted to Puppet ...
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0answers
32 views

Locked out from HP-switch, how could that happen?

Since today, when trying to log in with correct password into a HP 5500 switch via telnet i get following message: Failed to log in because the login idle timer expired. Connection closed by foreign ...
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2answers
27 views

Point of Shared Secrets on RADIUS Servers over a Cisco Switch

I was wondering what the point of Shared Secrets are on RADIUS servers if I set the secret in the Cisco switch configuration. If the supplicant wanting to be authenticated does not have to know it, ...
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1answer
75 views

Switch crazyness

I have a couple of switches here which gives me a headache. Sometimes it works, sometimes it doesn't the whole thing makes no sense. So I linking 2 vlan capable switches together on a regular access ...
5
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3answers
268 views

Gbit uplink vs Regular switch port

I have a 10/100/1000 24-port + 2 mini-GBIC ports switch which I have to link to other switches. Unfortunately, on the other switch all the mini-GBIC slots are taken up, so all I can do is link them ...
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0answers
19 views

Dell PowerConnect reboot - View unsaved changes?

We have two Dell PowerConnect 7024 on our site and, for scheduled electrical maintenance; we’ll have to switch them off for a couple of hours. This will be our first time doing this and, in order to ...
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0answers
14 views

What is an optimal hardware GRE supported switch that supports layer 3? [closed]

It's incredibly difficult to find information for affordable switches. We require a switch that has at least 25 ports, layer 3, web interface, and supports GRE. Our plan is to do remote hardware GRE ...
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0answers
28 views

Network Load Balancing (NLB), how to assign a public IP?

I have two web servers that I am trying to configure in an NLB. I have so far managed to get the NLB working on a private network range but I now need to expose this on a public IP. My servers ...
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1answer
36 views

Ethernet switch signal quality

Is there a (significant) signal quality difference between ethernet switches? n other words: A 1000base-t, do some switches allow longer cable runs than other switches?
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1answer
49 views

Designing a secure network layout

Over the last few years I've accumulated a lot of hardware that all currently exists on a flat network. There are a number of devices: my desktop, laptop, and computers of the rest of the people I ...
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0answers
25 views

Access switch on the LAN from a WLAN connection Sonicwall TZ205

I have a setup like the following Modem >>> Sonicwall TZ205 >>>> Linksys 8 port smart POE switch >>>> Linksys LRT224 When I am on the LAN through a wired connection ...
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1answer
35 views

Trunk port needs to be tagged or untagged?

I linking 2 different brand of switches (Linksys & Zyxel) through SPF gigabit connector. g4 1G-Combo-F Full 1000 Enabled Off Up Disabled Off It says the link is up but ...
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1answer
41 views

Intermittent switch failure and data flooding, hardware capacity?

We are using a switch (ZIO-SW500) connected to the building main network and we suffers from intermittent network halt. Normally the network works well. But, sometimes traffic designated to other ...
0
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1answer
22 views

RADIUS authentication requests not relayed to RADIUS server

I am trying to set up a RADIUS server for 802.1x NAC over a Cisco IE 3000 Network Switch, using freeRadius to implement it. I know the switch knows where the RADIUS server is because I set up the ...
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0answers
21 views

How to replace a fan on a 3com SuperStack 4500 unit (and where to find a fan)?

I have a couple 3com SuperStack 4500 switches with failed fans. I am not having luck locating information on HOW to actually replace the fans, or where to find a replacement/what kind. I know what ...
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2answers
196 views

HP ProCurve 2920 switch stack topology for TWO switches? Ring vs. Chain vs. trunk?

I have a customer whose two HP ProCurve 2910al PoE switches have failed. This was backing a VoIP deployment for a small call center. They are interested in replacement PoE switches, but there's a ...
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0answers
25 views

Configuring a RADIUS server for 802.1x over a Cisco Switch

I am trying to set up RADIUS authentication over a Cisco switch and I have gone through every tutorial they have. I am able to get the RADIUS server to authenticate when I access the CLI of the Cisco ...
3
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1answer
47 views

Determine what MAC addresses are connected to a given port on a Netgear GS724T via SNMP?

In looking through the output of an snmpwalk against our GS724T Netgear switch I was surprised that it doesn't list what MAC address(es) are connected and/or using a given port on the switch. This ...
1
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1answer
55 views

Config Cisco 2960-X 3 stack switches [closed]

I'm am in the process of setting up 3 x Cisco 2960-X switches in a stack. I've configured Cisco switches before, but this is the first time I will be configuring them as a stack. Will I only have to ...
0
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0answers
39 views

Configuring a RADIUS server over a Cisco Switch

I am trying to set up RADIUS authentication over a Cisco switch and I have gone through every tutorial they have. I am able to get the RADIUS server to authenticate when I access the CLI of the Cisco ...
0
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0answers
6 views

How can I enable debugging in zte switches running

We have recently bought some zte switches, they are affordable and have quite a lot of features. product page. At the moment we are having some issues with STP configurations when connected to a ...
0
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1answer
74 views

Voice VLAN Configuration on Cisco SG300

We currently have a single Cisco SG300 switch on our data network. We are introducing a hosted VoIP system. As such we will be installing a second Cisco SG300 (to account for growth and new phones) ...
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0answers
72 views

Windows mounted network drives slow after upgrading switch

On our small business network our old 10/100 consumer grade switch gave up the ghost, and we replaced it with a proper business-grade gigabyte switch. After wiring it in our Linux and Mac users ...
2
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1answer
36 views

Tagged Packets on native VLAN General Port

Scenario a) I have a Switchport (g1) in General-Mode. Say g1 is member of VLAN1 (native, untagged) and VLAN2 (tagged). Another Port (g2) is in Trunk-Mode, and member of VLAN1 and VLAN2 If i send a ...
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4answers
78 views

Is there any possible way in which unicast packet from one machine sent to two machines?

Is there any possible way in which a unicast packet from one machine sent to two machines? How does it occur. Anybody faced such condition occasionally?
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2answers
52 views

Why arp cache is stored in both machine and switch? [closed]

I heard that arp cache is stored in both machine and switch... Is that true. When packet need to transmit from machine 'A' to an machine 'B' means we can simply send the packet to switch. As ...
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2answers
105 views

Is it possible to configure a private VLAN on a switch and still access each server via a public IP?

I'm sure this is a very basic/common networking problem. I have 1 web server and 2 database servers that are co-located in a data-center. I have been issued 10 public IP addresses and I have a 10 port ...
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0answers
41 views

Communicate between Voice and Data VLAN

I have a network of computers, on which I also have an Avaya IP Office phone system with several IP phones. Currently the IP phones are on their own IP subnet range, but I want to create a separate ...
0
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1answer
71 views

Enabling Jumbo Frame on Cisco 2960G

I'm having issue with enabling jumbo frame on my Cisco 2960G. Here is what I tried, and what I got: Switch(config)#system mtu jumbo 9000 vb:: Read-only file system Changes to the system jumbo MTU ...
1
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1answer
48 views

Enterasys - Ports not working after power surge, but then work later on

We run all Enterasys switches (C and B) stacks. All my switches are behind some pretty good surge and battery backups (APC and Tripplite). 3 Days ago we had a power surge at our company. Nothing shut ...
1
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1answer
40 views

3750s not logging mac address changes?

I have enabled mac address change logging on my Cisco 3750s but I'm not getting any results. What am I missing? I've moved hardware a couple times and set up a couple new VMs with totally new MAC ...
2
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2answers
331 views

Does 5-4-3 rule apply to stackable managed switches?

We have 7 Dlink DGS-3120 48 ports Gig switches stacking together and all ports are being used. Each switch represents a single segment of our working area. it is working well without any issue. My ...
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1answer
137 views

Fortinet Fortigate software switch configured IP not accessible

I'm trying to get a software switch configuration working on a Fortigate 100D. It appears like devices plugged into the software switch ports can communicate between each-other, but they cannot reach ...
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2answers
90 views

Calculating required uplink capacity of network switch [duplicate]

Is there any common method (usable in practice) for estimating the uplink capacity of switch based on known number of users connected to this switch and the maximum internet speed they are allowed. ...
0
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1answer
24 views

Broadcast stop via loopback kills bandwidth

Why does creating a broadcast storm by directly connecting two ports on a switch cause the bandwidth to all the other ports to cease?
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0answers
36 views

ZyXel ES-2024 - Mirrored port showing duplicated traffic

I have a ZyXel ES-2024 PWD switch. I would like a computer plugged into port 26 to see all traffic that passes through port 2, both inbound and outbound. I have configured port mirroring for the ...
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2answers
50 views

2 lans on the same switch safe? [closed]

I have a modem with 5 ports. Each port gets a static IP address from the web. Basically if i ping one of those static IP addresses from home i am pinging directly one of those ports. On the first ...
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0answers
38 views

Connectivity between two switches using fiber optic cable

I have two DLINK switches(DGS-1500-28 With DEM-311GT Sx 850nm 1.25Gbps and the other switch DES-3026 with DEM-201F 1port 100 Base Fx Module) and I would like them to communicate over optical fibe ...
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2answers
64 views

Switch won't enable ports connected to network printers

I recenlty set up two different switches in two different locations and had similar problems with both of them when it comes to connecting a network printer. Switches: Switch 1: Netgear GS724T 24 ...
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votes
1answer
116 views

How to access device on switch from another computer? [closed]

I have several computers all connected to the same switch. Some computers are running RHEL, one is running CentOS. The CentOS machine is connected with NIC 2 to switch 2, and NIC 1 to switch 1. The ...
0
votes
1answer
47 views

Netgear GS108T v2 switch - packets exit wrong port

I have an eight port Netgear GS108Tv2 between my firewalls and their gateways. One switch serves my two firewall and the two ADSL and SDSL routers. One of the firewalls (pfSense) pings its gateway ...
0
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0answers
47 views

Can a 100Mbit switch throttle the internet connection?

We have a rather peculiar problem with internet speed in our office. Recently, we switched to a fiber-optic connection. We're supposed to have a 100Mbit connection (up and down). Here's how it has ...
0
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1answer
51 views

Connect Multiple Networks Wirelessly [closed]

I have a home network using a router to connect computers both wirelessly and with network cables. I also have another separate network about 10m away from my home network that is networked via ...
0
votes
1answer
65 views

Snmp graphs showing high traffic on switch but not in machine interface

I've setup a SNMP server on the office with ubuntu and cacti. It's connected to a 22 port switch. I've configured the following SNMP devices: 2 adsl routers, 1 peplink balancer, 1 wifi access point, 2 ...
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0answers
36 views

What should I consider when I plan a meaningful monitoring for SNMP Switch (SG200-50)

I am currently planning the monitoring of a switch and would like to consider beforehand what I need to be closely monitored in order to obtain errors and warnings are also useful. I have a Cisco ...
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0answers
53 views

Connecting internet uplink to switch or firewall

While I am using Cisco kit, this isn't really Cisco related, more general network design. In the past I have connected internet connections straight in to a layer 3 core switch, 3750X's, 6509's and ...
2
votes
2answers
136 views

Best way to hide ILO/IPMI management port and not using public IPs

I have 5 servers, each has one internet port and one ipmi port, so I am using 10 external IPs. Its a bit problem with a provider to get more IPs and also I want to hide IPMI ports since sometimes ...
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1answer
34 views

Router connect same 2 ports? [closed]

What it will happen if 'accidentally' i will connect 2 ports with the same utp cable? I'm asking here since i don't find anyware such a stupid and silly question but i'm curios about it, the router ...
13
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2answers
985 views

How do I ground a network switch?

I read in a lot of places that it's necessary to ground networking equipment. In a small SOHO environment where there are, say, 4-5 systems and each system is grounded, is it also necessary to ground ...