Cisco LAN :: 3750x Best Way To Completely Segregate One VLAN?

Jan 25, 2013

I have 3750x with existing small business server and all computers on one vlan. This vlan connects to other switches with fibre trunk sfp's.I want build a new forest utilising vlans in the normal way, what is the easiest way to segregate this vlan?The site is running 24/7.

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Cisco Wireless :: WLC 5508 - Segregate Traffic Log Guest

Dec 30, 2012

We have Cisco WLC 5508 in our network and right now ,this WLC is connected to two ports of each core switches.Both CORP and GUEST SSID are configured on this WLC. Now we want to segregate the traffic log GUEST to on core switches from WLC. SO my question is ,how can we achieve this without using guest anchor controller ? Can i use one interface Cisco WLC 5508 and connect it to the firewall or any device ?

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Cisco WAN :: 3750x - Internet Is Working Only On VLAN 1

May 23, 2013

I  need to connect two switches with each have different Vlans and wants  to Connect the users of These Switches to Existing Network of  Company(Vlan 1 ; showing Right in the picture).
 
I  have created Vlans and able to route packets from Two Vlans (10,20) to  VLAN 1 but i am unable to get access to Users existing in vlan 10,20.
 
Internet  is working fine from VLAN1 and existing network did not have any router  ,it is just a DSL modem and did not have Static /Default Route  option,NAT.
 
What Option should i choose for it. 3750x have 12 Mini Gbic Slots and 1 Routed port and did not have any NAT options in it.

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Cisco Switching/Routing :: VLAN Flapping In 3750x

Sep 22, 2011

I recently upgraded my network to have two 3750x core, one interface on the cisco is connecting to a Netgear switch via a fiber converter. I am keep getting the vlan flapping error message in my log as below.

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Cisco WAN :: 3750X Metro Ethernet And VLAN Configuration

Apr 7, 2013

I am trying to configure a new metro ethernet and have some questions about the configuration. The physical layout is a main office and two remote locations. The remote sites are point-to-point connections to the main office, tagged by the ISP with VLAN 130 and VLAN 140. The connections aggregate into one handoff at the main office, and are plugged into Catalyst 3750-X switches at all three sites.

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Cisco WAN :: 3750X - Print Servers On New VLan Configuration

Mar 26, 2012

Company has implemented a 3750x with older Lexmark Pro print servers on new V lan configuration for printers.  Causing print servers to lose connection.  Have to reset constantly.  Have tried to configure print server ports to full.  Also new Nexus 7000.  Perfect scenario is network devices.. not there yet. 

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Cisco Switching/Routing :: Vlan Access List In 3750x Switch

Feb 6, 2013

I have a LIII Switch Cisco 3750x ,with diffrent Vlans , Some users are in Vlan 102 (10.10.2.0) and Some Users are in Vlan1 (10.10.1.0) , now i want to restrict  the Vlan102 users to access Vlan1 , i am pasting my configuration below , how to create a access list . 
 
interface Vlan1
ip address 10.10.1.36 255.255.255.0
ip helper-address 10.10.1.36

[Code].....

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Cisco Switching/Routing :: 3750X - Unable To Access VLAN IP Pool

Mar 19, 2013

I have one issue on Vlan in Cisco 3750X switches , I have 2 Offices  , I am sitting at corp OFfice and i have one 3750 ( 10.10.1.36)Switch at my location , in my remote office i have one more switch 3750 ( 10.10.33.1) and i am able to access the both vlan IPS with out any issue , now i have some network components in Vlan33 ( 10.10.33.1) at my remote office . i am able to ping 10.10.33.1 IP from my corp office , but i am not able to ping any network devices in 10.10.33.5 example : 10.10.33.5 is my Cyberoam IP at remote location and i am not able to ping , i have taken a trace route and not able to find the issue as i am not much femilar , ping 10.10.33.5 at remote location devicec
 
I am giving the Configuration for both locaitons below :
 
10.10.1.36 - Corp Office 3750 Switch:
sh run
L3-#sh running-config
Building configuration...

[Code].....

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Cisco Switching/Routing :: 3750x - Denying VLAN Access To Other VLANs

Mar 18, 2013

I've got a 3750x stack set up as my core switch (only a small-ish environment) - I'm shortly going to be deploying an enterprise wireless network with Corporate and Guest SSID's. I'm going to be putting all traffic from the Guest SSID in VLAN 244, and don't want it to have access to any of the other VLANs (1 (Legacy Eqpt), 4, 8, 12, 16, 20, 24, 28, 32, 248 & 252).
 
IP ranges for all the main VLANs are:
 
1: 10.0.0.x/22
4: 10.0.4.x/22
8: 10.0.8.x/22
12: 10.0.12.x/22
16: 10.0.16.x/22 etc etc (you get the pattern)
 
I'll probably give Guest traffic (VLAN 248) the IP range 192.168.10.x/22 (not because I NEED that many addresses, but it's easier for everyone to remember/understand if I keep the subnet masks the same all round). However I also have a CCTV VLAN (252) which already has the range 192.168.0.x/24, which some people in other VLANs WILL need access to.
 
So my question is: What is the syntax for the ACL on my 3750x (IP base - 15.0.2) to prevent traffic from VLAN 244 gaining access to any of my other VLANs. I'm making a broad assumption here that a layer 3 switch is perfectly capable of supporting that function? I need ALL the syntax for setting up ACL's - I've never done it before
 
My gateway device by the way is 10.0.4.1, and I do have inter-VLAN routing set up on the core switch (obviously).

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Cisco Switching/Routing :: 3750X / VLan Missing In Running-configuration?

Jun 22, 2012

I have on 3750X stack with a few vlan

--------------------------------------------------
vvlansw06# sh vlan 
VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi1/0/6, Gi1/0/10, Gi2/0/5
                                                Gi2/0/6, Gi2/0/37
10   LAN_10                           active    Gi1/0/16, Gi1/0/17, Gi1/0/19

[code]....
 
where are the others vlan?

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Cisco Switching/Routing :: 3750X-12S No Spanning Tree On Native VLAN

Oct 7, 2012

I am migrating an existing LAN from 3550 to 3750X-12S. In the existing configuation, I´ve got some trunks with native VLAN <> 1. The native VLAN is also used for user data transport. With IOS 15.0(1)SE3 on 3750X I recognized, that per default behavior PVST is not active for a VLAN defined as native, even if the corresponding trunk is up and trunking. My current workaround is to add a "switchport access vlan" command on the trunk even this one never should become an access port. With this statement only the switch is activating the PVST for the native VLAN. For all other vlans PVST works as exspected. [code]

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Cisco AAA/Identity/Nac :: 3750x / Dynamic VLAN Assignment For Wired Campus Network

Nov 23, 2012

I`m working on Dynamic Vlan Assigmenton the basis of end user authenticatedwhoc are part of specific AD Group in c ampus enviorment.Objective: Need to assign the vlan on switch port on the basis of authenticated users OU Group in Active Directory. Eg: There are 2 OU groups in AD, Sales and Administration. Authenticated user in Sales group should get Vlan 10 and user in Admininstration Group shoudl get Vlan 20.
 
Components:
 
Cisco 3750x/Cisco 4500
ACS Version 5.2
Microsoft AD

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Cisco Switching/Routing :: Vlan Redundancy / Segmenting Public IP Block 3750x

May 21, 2012

I'm building a new colo presence with a full class C of public IP's. The idea is to connect to our ISP with a 3750x switchstack and they will be providing two ethernet drops that conect directly into two seperate switches on their side with HSRP and BGP at the routing level, so we will just point to their virtual IP (gateway address).I'm not sure how to either segment the public ip block or statically route each ip address and the interaction of vlans/svi with HSRP groups. Just use the switch at layer 2 or handle the internal routing with eigrp or ospf at layer3?

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Cisco Switching/Routing :: Passing VLAN / Spanning-tree Between 2960S And 3750X

Oct 8, 2012

Has anything changed in the way of defaults for creating a trunk port and spanning-tree between a 3750x and the newer 2960s? I have one of each I just took out of the box and applied my standard switch configuration template but I cannot get my VLANs that are configured on my 3750X to appear on the 2960S. I find nothing that is blocking and everything seems to be forwarding and I am running out of things to check.

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Linksys Wireless Router :: Connecting Segregate Free Agent GoFlex STAA1500100?

Dec 29, 2011

Segregate Model STAA1500100 works fine in USB Port of computer but Cisco Connect does not recognize the drive when connected to USB Port on Router. Drive does low beep beep every few seconds. The Router firmware is 1.0.03 build 14.

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Cisco AAA/Identity/Nac :: ACS 4.1 Disk Is Completely Full

Jan 17, 2013

We are running ACS 4.1 on Windows 2003 server.  The disk filled completely up with years of log files.  We have freed up space but now none of the  services will start back up either automatically or manually. 

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Cisco :: LMS 4.2.1 - Legacy Menu Is Completely Empty

Jun 13, 2012

After an upgrade from LMS 4.2 to 4.2.1 Legacy menu is completely empty. Is it a bug? If it's empty, how to get to some of DFM options (like rediscovery, discovery status etc.) They seem not present in "Site map".

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Add Printer To Computer That Is On Completely Different Network?

Mar 11, 2011

Is there any way to add a printer to my computer that is on a completely different network? It's a small residential setup on both ends.

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Wireless :: Signals Die Out Completely Every Few Minutes?

Sep 13, 2011

For quite some time now my parents' wireless internet cannot seem to keep a wireless signal anywhere in the house unless you are sitting next to the router. I've been doing everything I know to try and keep the signal strong enough to use it down the hall in the living room.

I've tried using different frequencies and channels however this only seems to work for an hour then the network will fall off the network list entirely and then a few minutes later will pop back in. What is causing this signal to die out completely every few minutes? They've tried countless numbers of wireless routers in hopes it would fix the problem however this never seems to work. Is this an issue with the ISP and/or the modem they provide us? Wired connections work fine, just wireless connections refuse to either stay up or constantly disconnect the user from the network.

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Wifi Has Completely Stopped Working?

Sep 11, 2011

I currently own a Sony Vaio Laptop that has been working fine for the last 2 years, I was happily on facebook when all of a sudden, my laptop started lagging massively and it disconnected me from wifi, I was shocked to find that when I tried reconnecting, the laptop decided to stop working for a second and my wifi stopped working completely, every time I disconnect the Ethernet cable from my laptop even though my wireless switch is on, it won't even pick up my Virgin Media superhub I have about 5 meters from my laptop, it indicates that there is NO wifi anywhere, just the ascending bars with a big red X on it

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Completely Blocking Wireless Signal?

Mar 17, 2012

I am getting wireless signal in every room except one of the bedrooms.I have upgraded to a better router Buffalo N450 AND added a wireless USB on to laptop.Here is the weird thing.I have 100% signal strength all the way to the bedroom door. One step inside signal drops to 20%, further inside it can get to Zero BUT if I just take ONE step into the bathroom which is in the bedroom.. signal goes back up to 100%... one step either way goes from 100 to Zero... What the heck?I live in an Apartment building.. What could possibly be upstairs or in the roof thats only blocking signals in this one room!

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Network Connection Completely Disappeared?

May 13, 2011

I had a network connection to the main family computer that just completely disappeared after I got back on it. It had been on all day because it was defragmenting, but a few minutes after I got back on it (I had just sat down in the chair and sent a couple messages on a chat I was in and dismissed an "Oh, Windows Media player found another WMP on main computer! Wooo!" notification) and then it was gone.

I assumed the internet had crashed so I gave it a couple hours, no internet. I stayed up longer waiting, writing, playing some games, but nothing. I didn't check the Network computers thing until now.

Usually even when the internet crashes the main computer still shows up in the computer list but it was just mine then. It seems like it totally dropped the connection and it can't find it again when I try to create a new one. It's not like I watch p~rn or download anything I'm not supposed to download so...

And the network icon doesn't have a big red no connection at all x - It's just the two computers, no world icon, no x. I've tried booting in safe mode with networking, nothing, 'netsh winsock reset catalog' + 'netsh int ip reset.log, nothing, create new connection, nothing, and repair memory problems, nothing. : Microsoft Security Essentials found no viruses after a full scan, and it had been updated hours before the internet had a tantrum. I recently uninstalled Malwarebytes because according to a friend its update crashed her computer so I have no other virus scanner to use.

Oh, I'm runnning a Windows Vista Home Premium. Mine is genuine, it came with the computer, but my father had the bright idea to use -my- Vista disc to install it on the main PC, so it's all 'rawr not genuine' though as far as I know, my father's W7 laptop is still running just dandy.

We use a D'Link router, and it's worked fine until now. I don't actually know how my computer is connected, I'm pretty sure it's hardwired to the modem or router, but my father's is wireless. I've been searching like mad for the router's wireless USB thing, but it seems to have walked out the door.

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Network Completely Disappeared On MacBook?

Mar 7, 2013

My Network is gone from my list of available networks on my MacBook. I use s NETGEAR router, my network name is simply "NETGEAR" i have never named it anything else since installing this over 4 years ago. I have unplugged the power cord, waiting several minutes before plugging it back in. Also tried unplugging both the cable and the power cord. The router has no small "pin hole" that i can see in order for me to try to re-set it this way. It has literally disappeared from my Mac. Do i need to re-install using my NETGEAR cd?

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Local Area Connection Completely Gone?

Mar 12, 2012

-No hardware profiles on "change adapter setting."-Network Adapter isn't shown in Device Manager.-Reinstalled windows 7 and problem still persist.

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WRT320N Speed Completely Unacceptable

Mar 20, 2011

Roadrunner plugged directly into my computer:

Ping: 29ms
Download Speed: 22.16 mbps
Upload Speed: .85 mbps

Roadrunner through my WRT320N, whether wireless or plugged into my computer(s)

Ping: 850-1400ms
Download Speed: .09 mbps - .25 mbps
Upload speed: .04-.06 mbps

Occasionally I get passable speeds in the 6 mbps range for download speed, but lately the router has performed this way nearly all the time.I've tried reflashing the firmware. I've tried multiple combinations of suggestions, ranging from adjusting single frequencies to adjusting MTU size, etc. Nothing works. This router simply CANNOT be this bad.

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Cisco Switching/Routing :: C2801 Not Booting Up Completely

Nov 17, 2012

Yesterday a coleagu accdently removed the CF card from the router now the router does no longer want to boot completely. It extracts the image from the CF card but when it has to initialize the configuration it stucks there for hours. Can it be that the startup config is somehow corrupted?
  
When i try to tftpdnld is says that the mac address is illegal.
 
The first line of the cookie looks like 04 ff 08 86 ff ff ff ff ff ff ff ff ff ff ff ff
   
System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)Technical Support: [URL], Inc.PLD version 0x10GIO ASIC version 0x127c2801 platform with 196608 Kbytes of main

[Code]......

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Cisco Routers :: RV180W And Two Completely Separate Networks

Aug 15, 2012

I'm an architect working in a small office that happens to be home to two seperate businesses, each with their owner network.  However, these two networks want to use the same large format printer.  I recently purchased the RV180W since the Cisco representative told me i would be able to connect both networks to the router so they can both see the printer without seeing the files on each of the other networks.  We simply want to share the same printer.
 
Network 1:
192.168.4.1
 
Network 2
192.168.2.1
 
Large Format Printer
192.168.4.151
 
Network 1 has the RV180W as it's router with three gigabit switches.  Computers and peripherals are connected to the three switches.  1 port open on the last switch.
 
I want to configure the RV180W to see both 192.168.4.1 and 192.168.2.1
 
What settings need to be modifed in order to accomplish this?  Do I need more equipment?  Is it easier to put a wireless card in one of the computers on the 192.168.2.1 network and then set it to see the 192.168.4.1 network?

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Cisco Routers :: Completely Disable DHCP On SR520-FE?

Dec 13, 2011

how can I completely disable DHCP on SR520-FE?

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Network :: Internet Doesn't Completely Turn Off?

Aug 8, 2011

I'm on a home computer and we use a router to deliver internet connection to the multiple computers in our house.However, lately I have been noticing that occasionally one of the computer's, on the network, internet connection drops but yet all the other computers are still working fine with their internet connection. And the internet doesn't completely turn off, like there is no "X" on the two computer screens down below...it just loses its little globe icon...In order to get back the internet, you would have to basically disconnect from the internet connection network and then go back into it and it's back again.

I was wondering, because I'm starting to get suspicious, is it possible that somebody on the network in my house the deliberately found a way to turn of the internet access for one of the computers? I was alerted by checking different websites that it is possible that somebody on your own home network can "hack" into another computer, view its internet history, and even disable internet. How do I know this is happening for sure and take steps to stop it. I want to catch who is doing this because nobody is telling the truth .

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Connected But Internet Completely Stopped Working?

Nov 5, 2011

I was surfing the web one night and noticed that it was getting late so I turned my computer off.... I get back on in the morning after to find that my internet has completely stopped working. I tried everything like restarting, system restore[CODE]

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Laptop Cannot Find Network - Completely Gone From List?

Jan 24, 2012

II tried to make a wep password. and when i made one, i went on my laptop to try to find my network but my network name was completely gone from the list of available wifi networks i can connect to.

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D-Link DIR-655 :: Router Stopped Working Completely

Jul 21, 2011

I bought the DIR-655 less than a year ago in Amazon, shipping it to NY. And then I came back to Uruguay. Almost 3 months ago the router stopped working completely and I started to search for support in Uruguay.After calling US support I was told I should contact the local or regional D-Link (which I later found is D-Link LA). And via DLinkLA.com I found the company TELEDATA S.A. url... who does the official support for D-Link in Uruguay. They told me the router couldn't be fixed, and told me DLinkLA, which is based in Chile, would either send me a working one (they also told me the service/warrany was already approved), or send me the money and gave me their contact details.After two weeks of contacting them, trying to get their attention, they finally told me it was not their responsibility because it was bought in the US. And now they don't return my e-mails.

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D-Link DIR-655 :: Completely Disable Internet Access For Certain PCs

May 14, 2011

Is there any way to disable internet access for selected PCs, while still allowing them to access the LAN?

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