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

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14
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2answers
1k views

Virtualization - Ten 1Gbps links or one 10Gbps link? (Performance)

I have a machine that has several VM's (5) and 3 physical networking cards (with each 2 ports), with a total of six 1Gbps ethernet ports. I have a SPF-capable switch, having a total of 48Gbps ...
2
votes
2answers
38 views

Is a switch is an iSCSI “mode” required for iSCSI targets?

If I have a switch, nothing special set up, just regular traffic, no jumbo frames, no special iSCSI set up, can I still have iSCSI traffic, say from a Windows machine using the iSCSI initiator and a ...
1
vote
1answer
10 views

Manage Windows Server 2012 and trunk the Hyper-V VM (same physical NIC)

I'm trying to use Hyper-V to deploy a pfSENSE box inside of it. But, the scenario is: 3 VLANs VID: 1000 VID: 2000 VID: 3000 On a physical switch port, I've tagged the Server physical port with ...
0
votes
0answers
29 views

Network layout advice needed

I have been doing some research, I keep reading about source guard on Cisco for segregating subnets and only allowing certain ports access to an IP Address range. However, I don't use Cisco switches, ...
0
votes
1answer
48 views

Cisco SG200-26 - Can't change management VLAN

I've purchased a new SG200-26 switch and upgraded it to the newest possible version: I configured multiple VLANs - nothing special - however if I try now to change the management VLAN (as I did ...
0
votes
1answer
57 views

Networking newbie [closed]

I have been working in a call center as an IT assistant for a while. I have almost no networking experience, but suddenly I've become their entire IT department. We have around 100 employees, and I ...
2
votes
3answers
240 views

How to recover from switch failure? [on hold]

Suppose there is only one switch within a system and it is connected to a bunch of machines to form a network. If this switch goes down, the entire network goes down. Chances of this happening are ...
0
votes
1answer
13 views

HP 2530: multiple management IP Addresses possible?

I have two HP 2530 switches in our hosting center. Because of some VPN problems between our office and the HC, i need to change their management IP Addresses to a different IP network. Currently they ...
0
votes
1answer
42 views

Forwarding IPs to Switch for NAT

I have a Question. We actually have a Cisco 1812 Router and we're Switching to an ASA 5512-X. The Problem is, the ASA 5512-X only has 6 Ports. The 1812, had 8. All in use. We need to translate 3 ...
-1
votes
1answer
19 views

Wifi Router Netgear DG834N and switch Netgear GS108GE ProSafe Switch don't talk to each other [on hold]

I own the hardware described in the title, a wifi router and a switch. Wifi Router and switch and connected using a cable. From a laptop I can connect to wifi network just fine and browse the ...
-2
votes
0answers
11 views

AP doesn't work properly with D'link dgs switch [closed]

I purchased D'Link (dgs 1210 28 ) rack switch to connect 4 AP with a router temporary (Network will extend soon) , After I plugged the Data server and the Router into the switch the lights became ...
1
vote
2answers
41 views

Live Migration - Switch Infrastructure

We will be deploying into an environment intended for maximum resilience/redundancy and the capability for rapid scalability. Context This environment is: 1 x NAS server with FreeNAS RAID 2 x ...
2
votes
0answers
15 views

Cisco Switch Routing performance monitoring

It is quite a question for me: I have Cisco Catalyst 2960S switch which is nice hardware even despite its age and EOL. I'd like to set it as small router between several networks within a remote ...
1
vote
1answer
32 views

DHCP Server Port-Based Address Allocation on Cisco switch 2960-x

I am trying to configure DHCP Server on a Cisco 2960-X switch to achieve port-based address allocation. I would like the IP address assigned to any device connected to that port to be the same every ...
0
votes
0answers
24 views

Problems with Switch DGS-3420-26SC

I have a new SWITCH DGS-3420-26SC. Look at situation: On the first SWITCH Dlink DGS-3100-24TG, i have three VLANS: VID 99,132,100 99 this is our SERVICE VLAN; 100 this is VLAN of the neighbours ...
0
votes
0answers
30 views

Difference between VPI and VCI in ATM

I don't really understand the difference, neither the necessity of including two fields (VCI and VPI) in asynchronous transfer mode. As far as I understand the main difference between a virtual path ...
0
votes
0answers
14 views

Limiting internet subscriber's bandwidth on L2 vs L3

From my perspective, I see at least three ways of doing that: Limiting CIR/PIR per port in distribution: switches, GPON OLTs (L2) Limiting at router with simple HTB/PCQ queues (L3) Combination of ...
0
votes
3answers
1k views

D-Link DGS3100-24 vlan settings

In the vlan settings on the D-Link DGS3100-24 there is a default vlan with id 1 with settings to "Untag VLAN Ports" T1-T32. All other vlans user port 1-24 in their settings and the switch only have ...
1
vote
1answer
32 views

Replace client switches with Netgear to match core or instead mix/match Cisco?

We are looking for how we can have a more reliable, simpler network. How can we keep out administrative burden low, and work smarter not harder when it comes to our infrastructure? Background: We ...
0
votes
0answers
15 views

Zyxel GS2210 errors on single port connected to printer

We have a Zyxel GS2210 Switch. One of the ports is connected to a HP Officejet Pro 8620 Printer. The webgui of the switch has a column called "errors" with a counter for every single port. Since there ...
0
votes
1answer
69 views

Stacking Cables on Cisco 3750G Switch

I stacked two 3750G Cisco switches a few weeks ago, all go. But, yesterday I installed a 2nd stacking cable as well for full optimization. However, it is not registering it seems. Cisco3750#sh switch ...
0
votes
1answer
23 views

Cisco SG220 Web Interface stops responding. Is there a way to reload it though the console?

I have a Cisco SG220 and the web interface stops responding and is no longer accessible after some days of usage. This is a fairly new equipment and every time it happens the switch continues to ...
0
votes
1answer
18 views

PowerConnect 2216 slow with 2 ports connected to router

I have a Dell PowerConnect 2216 switch. When I plug one cable connected to LAN port #1 of my router it works fine: _____________________________________________ | Router | PC | PC | PC | PC | PC | ...
3
votes
2answers
6k views

How to Configure Different Gateways for Different VLANs

I have around 10 VLANs, and two different internet gateways. I want traffic on some VLANs to use one gateway, and traffic on other VLANs to use another gateway. (e.g. I wish to route server traffic ...
0
votes
1answer
19 views

Rapid VLAN assigment on huawei quidway s2300 switches

I'm newbie network enginner wondering is there a way to assign same vlan to multiple ports rapidly (not separately)? Somehow like this: "int eth 0/0/1 0/0/9 0/0/15 default vlan 101"
2
votes
2answers
17k views

Configuring VLANs on HP 1910 switch

I understand how VLANs work, but am not quite sure what the various settings in my HP switch actually do. I have an HP 1910 switch, and I'm using the web interface to configure it (personally I'd ...
4
votes
2answers
16k views

How compatible are sfp's really?

How compatible are sfp modules between devices. For example, am I likely to be able to plug something like this into a cisco, hp, or other switch with mini gbic ports? ...
3
votes
0answers
42 views

Inter-connecting 2 Switches on separate racks

I have 2 Dell N4032 switches installed on separate server racks. They are inter-connected on Port 23 and 24. Servers in Rack1 can ping Switch1, Servers in Rack2 can ping Switch2. However, they cannot ...
0
votes
0answers
47 views

Dumb Switch to Smart Switch - Ports going up and down, what's up?

I just switched from a dumb switch 10/100 to a smart switch HP 1920-24G-PoE, and noticing ports going up and down randomly. I can't see any obvious reasons why this is happening so am curious if ...
1
vote
1answer
17 views

limited connectivity at end nodes

I am running a campus wide network of a University and experienced a very unusual scenario for my network. The problem is two folds and therefore i would like to explain that separately after briefly ...
5
votes
6answers
23k views

Cisco switch, how to determine MAC address of connected device or wake device up?

switch1#show interfaces descri ... Fa0/13 up up Fa0/14 down down Fa0/15 up up ... (the ...
0
votes
1answer
33 views

I FUBAR'd the IP, subnet, and VLAN settings. Now how to access managed switch?

I have a Dell powerconnect 2748. I think I have done messed it up though when setting it up because so far I have not been able to access the webconfig of the switch after I changed some settings I ...
0
votes
2answers
678 views

What's the default administrator password for a FORE ES-2810 or an ASX-1000 switch?

Trying to get to know a new (to me) network and found an entire rack full of FORE ES-2810 and ASX-1000 switches still being used for... something. When I telnet to one of them, it asks for an ...
0
votes
2answers
80 views

Switch in front of router - multiple public IPs

Network Gurus, This seems logical and doable but want to have an advice from experts. We have /26 on single drop in our datacenter. Some of our application servers (A) need public IP addresses and ...
1
vote
1answer
38 views

How to implement lacp cross switches

I have a question of lacp on Cisco 2960x. Are they in the same group "1" or not? isolated? Lab setting: Server-4pt (linux) -> sw1 channel-group "1" Gi0/1-2 Server-4pt ...
0
votes
1answer
174 views

Can a Cisco SG300 Layer 3 Switch act as a NAT router?

I have following Network Setup: Basic Home Wifi Router ------------------------------------------------ | Cisco 2500 Series Wireless ...
0
votes
1answer
24 views

Switches Types: core switches vs top of rack switches vs end of row switches vs rack switches

Note: I'm a noob in this field! I'm searching to find out the difference between the different types of switches: core switches top of rack switches end of row switches rack switches Are they ...
1
vote
2answers
141 views

NTP Server in Network Switch

Is it possible to set up a Switch to acts an NTP Server for the devices connected to its VLAN ? If so ,how can I implement it my HP Switch A3600 JG299A. I want to do this because I do not have ...
4
votes
2answers
458 views

How does Windows 7 detect my switches?

I notices in the Network overview of Windows 7 that my switches are found on the path to the gateway, which baffled me completely. The last time I checked they just took the ethernet packages and ...
1
vote
1answer
35 views

Switch to Switch Communication with Static Routing

Before I ask any questions, here's a bit of an overview: Simple example of my network topology What I have in the diagram is two networks segregated by a point-to-point LOS system (the "towers") and ...
2
votes
2answers
1k views

How is my newer Cisco Switch finding the default gateway?

Is there something new that I do not know about with newer Cisco gear. In order to manage my switch I usually have to assign a VLAN 1 interface and add a default route (or ip default-gateway) to ...
0
votes
1answer
66 views

How can I connect my switch to my fibre connection?

Question We just got our ADSL line replaced with a Fibre optic line. Part of the Fibre-install included a Fibre panel (terminator?) and a Huawei switch. I'm not sure how to connect our existing ...
0
votes
1answer
37 views

Link Aggregation with 3 switches

I am new in networking. Sorry for my ignorance. I have three switches. Switch 1 has 4 ports. Two of them connected to switch 2. And the other two ports are connected to switch 3. All these four ...
0
votes
3answers
1k views

Default gateway config in FlexFabric 5700

We've taken delivery of a brand new set of shiny FlexFabric 5700 10GbE switches. I've read through the config and setup guides provided by HP and they're great, except that they outright lie about ...
0
votes
1answer
46 views

Meraki Switch Uplink

Bare with me as I am not the greatest at networking and vlans but i can usually figure it out if i can find info. I have a new switch from Cisco Meraki (MS220-8P) and i am trying to configure a Dual ...
2
votes
3answers
6k views

How to remove second ip address from a vlan interface on a switch?

I am using ssh to remotely connect to a Dell PowerConnect switch (Dell uses the same commands as Cisco). I need to change the ip address of vlan 1 from 192.x.x.x to 10.x.x.x. I am able to add the new ...
0
votes
0answers
29 views

Cisco 2960-X switch converting unicast video stream to multicast video stream

Can we convert unicast video stream to multicast video stream just using Cisco 2960-X switch ? Note: I tried to route incoming stream to 235.6.6.6 as it is my multicast ip adress, I used. In order ...
0
votes
0answers
26 views

Why can't I connect to this switch ther the comm port?

I have an enterasys C2G124-48 switch that I need to set up some port mirroring on to troubleshoot some Voip issues. However I am having issues connecting to the switch through putty. I am following ...
0
votes
0answers
21 views

Cisco 2960G switch console username. Cannot login

I have a Cisco 2960G switch and I have configured a line console password on it. But I have not set a username and when I attach a cable to the console port I am asked for a username, but I cannot ...
2
votes
0answers
45 views

Multi vlan internet access via Watchguard

i'm pretty new to network and routing so i would appreciate some tips on this. I have a firewall(watchguard x1250e), connecting to a switch(Nortel Baystack 5510) with multiple vlans for internet ...