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

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2answers
1k views

How to connect two HP 1910-48G switches

My company have two HP 1910-48G Switches. One of them is on my flat and the other one is two flat above. I'm not a network guy but my manager wants me to connect these switches and he doesn't want to ...
0
votes
1answer
52 views

different Native vlans on the ends of trunk link

http://www.techexams.net/forums/ccnp/53867-different-native-vlans-ends-trunk-link.html so i read this, but i still can not get traffic between two ends of a trunk link, each with a different native ...
-2
votes
1answer
23 views

Switches without SFP and with SFP

So I am looking at two different rackmount switches, one I do not have SFP ports on there and one that does. Would it be possible to have those two switches linked up through just looping through ...
0
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0answers
11 views

Enterasys S8 switch shows tbp port

When I see sh port status on Enterasys s8 switch, it given me list of tbp ports as follows: tbp.0.1 down up other tbp.0.2 down ...
0
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0answers
3 views

IPTV and NET over one cable - VLAN [migrated]

My scenario: House with 2 floors. 1st floor equipment: ONT (fixed on this floor) - with four ports - three for IPTV and one for Internet Netgear Switch GS105E NAS (fixed) Computer (fixed) ...
0
votes
2answers
35 views

Unable to add allowed VLANs to trunk and port not trunking

I am unable to add any VLANS to be allowed on trunk and the port is not trunking. I've tried: Switch0#configure terminal Enter configuration commands, one per line. End with CNTL/Z. ...
4
votes
0answers
62 views

Configure Juniper M320 as Ethernet/STM transparent converter

There is Juniper M320. We need to move ALL the traffic from one port to another. Everything that comes to one port goes to another and vice versa. No snooping or any other processing is required. One ...
1
vote
1answer
15 views

Setting up VLANs using GS724T & Draytek 2860n-Plus

I am having a world of problems here and can't see what is going wrong! The Plan: Use the Draytek to connect to the internet and provide WLAN access. Single port to connect to the GS724T and tag ...
2
votes
1answer
28 views

Unable to remove a port from default VLAN

I am unable to remove a port from my default VLAN. I've tried: Switch(config)#interface FastEthernet 0/1 Switch(config-if)#no switchport access vlan 1 It has no errors but when I check it using: ...
4
votes
0answers
189 views

HP Procurve 2920 VLANs with DHCP cannot ping

I have problem setting up working VLANs and DHCP server on HP Procurve 2920. My problem is that I cannot even ping computers between VLANs with static ip addresees. winXP pc on VLAN101 with ...
0
votes
1answer
47 views

Is it possible to mount these pieces of equipment vertically, together? [closed]

I have a Cisco 2811 and 2950 and a Dell PowerEdge R720 server. I have the 2811 and the 2950 in a wall mount that holds the two pieces of equipment vertically (the jacks are facing upwards). I'm ...
2
votes
4answers
2k views

How to backup the configuration of a cisco switch and ASA to an SMB windows share?

How do I backup the configuration of a Cisco switch and ASA to an SMB Windows share? I have full enabled admin through SSH. what would be the full command to save it to an SMB share? Is it "show run, ...
-4
votes
1answer
51 views

Is this a switch loop?

I have a quesion regarding creating switch loops. I have 1 server with 2 network cards (nic1 and nic2) and 2 switches (sw1 and sw2) Question: Am I creating a switch loop if I connect nic1 to sw1 and ...
-1
votes
1answer
14 views

Brocade FCX648-I In password recovery process

Brocade FCX648-I In password recovery process I get to a Monitor> prompt. The password recovery instructions tell me to assign a new password at this point but doesn't tell me how. There is a link to ...
0
votes
0answers
18 views

DHCP Requests cannot get through Switch

First a little about the network setup: We are a smaller department of a larger school. We have 7 offices with TP-Link managed switches as well as 20 APs and 24 classrooms. The switches, APs and ...
0
votes
0answers
15 views

Cant get Vlan to work on tomato shibby (AP) [migrated]

Im setting up a small network. The hardware used is: HP 4330s with pfsense( As a router ) -> Broadcasting vlan1000(Admin) and vlan1001(Guest) Zyxel gs1900-24e (Switch) Asus RT-N66U firmware replaced ...
5
votes
2answers
192 views

VMWare distributed switch, VMs from different hosts cannot ping one another

I am using ESXi 5.1 in the hosts, I have setup a distributed switch with corresponding uplink and port groups. When migrating to distributed switch, it seems that VMs from the same host can ping one ...
0
votes
1answer
43 views

Domain network not recognized after replacing switches (Domain Controller or Switch)

I had difficulties with our network speed, we still had 100MBit switches so we made a change and replaced our 3 switches with some nice new ones (1 central 16 port going to 2 switches with 24 ports). ...
4
votes
1answer
6k views

Configuring Sonicwall to route VLAN traffic to internet

I have a Sonicwall NSA 2400 that had its configuration reset and I'm having trouble reconfiguring it. The Sonicwall's WAN port (X1) connects to the internet. Its LAN port (X0) connects to a 3Com ...
0
votes
1answer
1k views

unable to login to CISCO management IP

I 'm inable to login to my fabric CISCO switch ( MDS 9506) through management IP It's giving an error- when logging it from Device manager "10.20.XX.XX" timed out Busy Network, No Route, or snmpd ...
0
votes
0answers
29 views

Wireless Client missing from MAC table

I am currently having problems with Wireless Clients loosing network connectivity, though still displaying a connection to their Wireless Access Point. I have 4 Wireless APs, each a Cisco WAP321 ...
3
votes
1answer
99 views

Cisco switch: is it possible to add a user, which would be able to modify a single specific port?

Is it ever possible to delegate control over a single switch's port to an end user? Here's the situation: let's say a company offers colocation service. Each client's server is connected so a port on ...
0
votes
2answers
23 views

How to determine if auto negotiation with switch is finished

When I connect ubuntu network interface to cisco switch, the ports of switch and ubuntu starts auto negotiation. I need to know if auto negotiation is finished or not. The easy way is ping & ...
1
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0answers
54 views

Why don't TP-Link 24x-switches propagate clients when cascaded in two?

I'm behind two TP-Link switches those are cascaded behind a TP-Link router, which is in turn behind a consumer router that works as in modem only mode. Clients connected to the first switch work ...
0
votes
3answers
805 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 ...
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votes
1answer
79 views

Netgear GS724T - all lights are always on [closed]

I have a Netgear GS724T "Smart" switch. When I power it on, all the lights come on. I have tried a factory reset, but this has not changed the behaviour of the switch. Has this switch failed, or is ...
-3
votes
2answers
40 views

Configuring Allied Telesis AT-9000/28

I am trying to configure an Allied Telesis AT-9000/28. It comes with an RJ-45 to DB-9 connector but my computers lack a serial port. What are my options? I'm on the LAN/same subnet, can I network in ...
18
votes
6answers
24k views

What are the implications of having two subnets on the same switch?

Can anyone tell me what some of the implications of having two different subnets on the same switch would be if VLANs are not being used?
2
votes
2answers
171 views

Isolating Ethernet ports on a Cisco Nexus 5000

We have several machines plugged into various ports on a Cisco Nexus 5000. We want to separate the switch into groups, so a handful of machines can see and talk to each other and no one else. So, to ...
3
votes
1answer
68 views

DNS settings on managed switches in LAN

We have a Windows 2008 server that is connected to a managed switch with about 15 Cat5e connections and three fiber branches that go to different parts of campus. At each of these parts there is ...
0
votes
1answer
38 views

Can a faulty switch connected to the core switch block an entire network?

I encountered the following situation: The network I administer was blocked, and this was traced down to a specific rack, after I reseted both switches, everything worked. I supposed it was the core ...
1
vote
1answer
74 views

OpenWRT router as a switch with DNS

We have a router (8 ports) that serves our church (it also is our modem with ADSL2 etc) and handles our DHCP services. I've needed to extend our network to accomodate another 2 ports, so an extra ...
0
votes
2answers
63 views

Interconnecting a fiber optic switch with a copper switch

What would be the best way to connect from a "fiber optic only" switch to a regular copper rj45 switch? Which of the configurations shown in the attached diagram would work properly? Should I go for a ...
24
votes
7answers
18k views

What is the minimum ethernet cable length for a CAT6 gigabit connection?

We run a Netgear GS724Tv3 switch and part of the configuration per port is an option for "Lower Power Mode". The documentation for the switch lists this feature as a "Green Ethernet Configuration" ...
2
votes
1answer
3k views

Configuring https access on HP A5120 Switch

I am trying to configure HTTPS management on a HP a5120 switch running Version 5.20.99, Release 2215 and not having much luck. I have followed the manual by creating an SSL policy first and then ...
0
votes
1answer
41 views

How many times does switch calculates FCS?

Does a switch calculate the Frame check sequence (FCS) before sending packets? Because packet shouldn't change, so FCS should also stay the same.
0
votes
0answers
45 views

Switch troubles - Cisco Catalyst 2950T 24

At my new workplace, thanks to the old system administrator, we have an unused Cisco Catalyst 2950T 24 (two gigabit ports, 24 100Mbit ports). It was used in a quite weird setup (the place has two ...
0
votes
1answer
71 views

2x uplinks in HSRP - how to setup switch?

Our ISP provides us with 2x 10G uplinks, and they use HSRP on their end. We see incoming traffic (load balanced) on both ports, but outgoing from us is only via one port. We only run L2 on our side ...
1
vote
1answer
59 views

SFP+ Cable From Uplink Port to SFP+ 10Gb NIC

I have a specific question about using a this 2m passive SFP+ cable to connect the 10Gb uplink port on a switch to a NIC in a server. Switch: Netgear GS752TXS Server NIC: HP NC522SFP I'm fairly ...
-5
votes
1answer
56 views

How do I connect a router on one LAN port to another router on another LAN port on the same switch? [closed]

I have the following setup: For non-technical reasons, I am unable to change the physical setup of the devices. What I'd like to do is have router 2 (a wireless router) act as a wireless AP that ...
-3
votes
1answer
45 views

What type of switch should I get to implement a site with around 140 desktop machines, plus around 20 SIP phones? [closed]

We're moving to a new office and we will be needing to setup a network closet. I'm estimating that we will have around 140 ethernet ports and will be using CAT6a cabling for 1Gbps connections. I'm ...
-1
votes
1answer
209 views

How to implement a network fault tolerance on a Windows Server 2008 R2, Single Server - Dual NIC? Only Windows Services like DNS, DHCP, File Server

Diagram 1: Server, VIP IP Address, Network connections, Switches and Clients Hello There! We have an IBM x3650 M3, Dual NIC. We have Windows Server 2008 R2. In this Window we will have services ...
4
votes
1answer
424 views

HP Procurve 2512/2524 protected port, source port filter or similar?

HP Procurve switches usually have a setting so that the ports are told which other ports they can communicate with. An easy setup using this is to only allow communication with the uplink, so that no ...
-1
votes
1answer
88 views

3 NICs in VMware ESX 5.5.0 cannot connect to each other [closed]

I have a Vmware ESXi 5.5.0 hypervisor, installed on a desktop pc with 3 physical NICs. The first NIC is connected to the internet (WAN), the 2nd and 3rd NICs have Access Points installed (plugged in) ...
1
vote
5answers
4k views

New office cabling: should we use CAT7 or CAT6a? [closed]

We are going to do the cabling in our new office building and we are thinking to lay down 10Gbit cables since we use HP switches that come with 10Gbit ethernet ports. We will also lay down few fiber ...
3
votes
2answers
104 views

Can PoE kill unmanaged switches?

Two simple unmanaged switches have died in the same cabinet in two years, one at 18 months and one just today at six months. Both times we gradually experienced increasing intermittent verified ...
1
vote
2answers
3k views

What is the command to enable 3rd party SFP+ transceivers on Arista switch?

Does anyone know the command that enables the usage of 3rd party SFP+ on an Arista 7148S switch?
0
votes
2answers
32 views

Does all Layer 3 capable switches able to do Layer 2?

I was tasked to find an affordable Layer 2 Switch around our area but can't seem to find one... in fact I found a Layer 3 Switch that seems to be cheaper than the Layer 2 i came across somewhere. I ...
-1
votes
1answer
156 views

Allow Internet access across vlan [closed]

this is my lab: I have the switch netgear gs724tv4, I have a modem router for Internet access with dhcp that can lease only 5 ip addresses. The ip subnet for the modem router is 192.168.1.0/24 I ...
1
vote
1answer
63 views

Is it possible to bridge/join two or more vritual (Hyper-V) switches with the same address range over VPN?

I have several Hyper-V servers which are not in the same LAN. On every server are several Hyper-V guest VMs which are connected via an internal virtual switch. Now I want to to connect these two ...