Hot Solutions

Hi Everyone

I have a HP v1910 which is meant to be capable of routing, unfortunately I can't get it to work. I have 2 VLANS each with seperate subnet, I have a device on each Subnet, but they're unable to ping or communicate with each other.
...

I cant seem to get my IP phones to grab a DHCP address. All I am getting from debuggin DHCP on my local switch is the DHCP Bootrep pkt not for us message. I have a Cisco 3560 set up with  a vlan for my IP phones that is connected to my network...

I have 3 Cisco 1040 wireless Access Points that receive DHCP leases from a Fireware XTM firewall...   If I create single SSID on each (same SSIDs) my clients get an IP address from the DHCP server with no problem.

If I create two or more SSIDs...

I don't know if I'm going crazy or what, but I can't get DHCP to hand me an IP address on VLANs configured on a 2960 switch.  I've set this up many many times on 2950s, 3550s, 3750s, etc and it works.  For some reason this 2960 switch is not...

Hello Experts,

 

Some of you maybe familiar with GNS3 simulator labs.

 

I have managed to install an Olive image for Juniper routers, however I was wondering if its possible to install an EX4200 image on the router and have it...

Hello,

 

I have a A5500 where i have configured a route-port on an interface.

 

interface GigabitEthernet1/0/1
 port link-mode route
 ip address 172.20.11.254 255.255.252.0
 

This port is a link to an old network which I am...

I am in the process of configuring 2 x HP 2910al Procurve switches with port 12 & port 24 uplinked to one another for performance & redundancy purposes.

At present I have configured the two ports on each switch as a HP 'trunk' which as I...

Hi All

I have two HP 5406zl switches with premium license installed as Cores switches in our business network.

Those two switches is holding our default gateway in vlan 1 interface, there is configured VRRP so that the default gateway...

Hi,

I trying to get my Cisco catalyst switches (2960G) to use MS NPS as a RADIUS server so that AD accounts can be used to log into and manage the device.

I have read several guides on the internet including some posts here at EE - no...

i got a lot of that

2012-01-18 14:42:55 networkd rt_nladdr_get: Missing abstract address argument        Debug


what is that

I have a new switch that I want to configure.  It is an HP E2620-24.  What application on Windows Server 2008 would I use to access the switch and how is it done?  Thanks.

Is there a way to show the current inbound percentage of L2 broadcasts on a switch interface? (per/sec)?

I ideally I would like to be able to show both the packets on the Trunk as well as well as any dot1q sub-interfaces.

Thanks.

Switch...

Sorry for having to ask this here but Cisco's convoluted web site is proving less than helpful.

My question is, if you DON'T have SmartNet on your equipment, is there a way to get IOS updates?  I'm assuming if you don't have coverage for say,...

Hi,

Just a quick one here...

I have a Cisco switch that is connected to an outdoor access point that is not a bridge but an AP that clients connect to. Is it ok to enable PortFast on ports on a switch that connect to access points?

Hi there, does anybody know if the Fortigate 110C supports intervlan routing with encapsulation .1q coming from a trunk port off a Cisco 2960? If you could point to their documentation stating yes or no that would be awesome.

Thanks in advance,

Hi experts,

I'm still new to enterasys world; we usually called out an engineer to set up for us. But now there is an opportunity for me to setup myself.

We have 3 enterasys switches stacked with 2 VLANS (voice and data).

And for some...

Hi,

1) I would like to deny port 23 in all VLAN's except VLAN 1?

2) how to block vlan100 and vlan101 to access vlan102 ?

Please find below my cisco catalyst 3560G details:

Many thanks for your help

show run
Building...

I have a Hp Procurve 2626 and there are about  4 ports that are reaching 78% Unicast Rx or All TX , all at the same time.

When this happens I lose connection to our other offices. When it drops back down it, connectivity is restored.

1....

I have a Cisco switch 4507R with dual power supplies. one power supply has "Output fail" with red light.  I have a 2nd Cisco switch 4507R so i should be able to turn off/replace turn on switch. is there any commands i should run to do this? or...

I have a routing problem which I just can’t figure out.

I am trying to introduce a wireless hotspot facility around our company, I have managed to get it to work at the HQ but I am struggling to figure out how to get it to work at our other...

Nowadays laptops don't come with DB9 serial ports anymore but
USB ports.  I've lost my USB to DB9 adaptor 2 years ago & don't
intend to get another one.

I have a pair of C3750X-48 switches mounted & just directly beneath
these switches are...

Hi

My question is when I change native vlan 1 to 100 for best practice will all my trunks I create be on switch also have vlan 100 automatically as native vlan or must I still add native van command on my trunk. And when I change native vlan...

Setting up a test network and need some basic help .

Here is the hardware :

Cisco ASA 5510
Load Balancer ACE 47102
Cisco 3750

Ip scope 10.10.200.1\16
255.255.0.0

Pretty simple configure network with a DMZ via Vlans and Turn on...

I have three different boxes on each of them there are six virtual computers, three on ip 192.168.0.1 and three on 172.16.0.1. Inside each host box there are two virtual switches and they are attached to the same physical NIC card of the server...

Can someone please highlight the differences  between BPDU guard and Filter in the STP tool kit. when and where would i use them in a  scenario when there are 3 switches only 2 supporting STP.

Also please don't send me to links i have been...

Hi,

We've had our network upgraded and now need to add our first extra HP ProCurve 2520 to the network. What's the best\easiest way to do this? We're running ProCurve manager v3, can we do it through here somehow, or is this something we need...

Please advice if Cisco 3750x 24S-E supports net flow

2x WS-C3750X-48T Cisco switches stacking config & etherchannel config for VMware
Asked by: sunhux
Pls refer to EE thread id 27593251  where I described the BOM
list of items that I have ie:


2x WS-C3750X-48T-S      Catalyst 3750X 48 Port...

When connecting a pc directly to the fiber convertor, we have full connectivity without any dropped packets when we do a continuous ping to the other office. But, when we connect the fiber media convertor to the switch we have connectivity issues...

Our company is expanding and we are taking another floor in our building. We are currently on the 20th floor and the new floor is the 2nd floor. The distance between both floors is over 500ft.

The plan is to run fiber and connect both floors...

Experts,

I have a Cisco 2960 connected to a Cisco 3560 ( core switch ), the other day the link went down for no apparent reason and will not come back up. I've tired the following on the 2960:
Shut / no shut on the port
Set default on...

Hi,

I overheard there might be some internal load balancing functionality that was added by Microsoft in version SP2 of Exchange 2010, is this true?

I read over the technet article "What's New in Exchange 2010 SP2" and did not read anything...

Hi,

I have asked multiple questions but didn't had any clear answer.
I have a labenvironment with 2 DDWRT-switches, a HP Procurve and ESX-servers.
How do I migrate to VLAN's without loosing my connection?

My setup:
     
    Internet
...

I noticed there's a mini USB port on our C3750X switch labelled
as "Console".

I used my Samsung (& Nokia's as well) phone's mini USB cable to
plug into this port on the switch with the other end of the USB
cable plugged into my Win XP SP3...

Hello, I am trying to get VLAN's setup, coming from a flat network layout.
We purchased 2 HP e3800-48-POE switches, with stacking modules, and have them stacked. I want these to be my core switches.
We also purchased a 2910al-48-poe, and it is...

Hello !

We have 2 links to our Upstream provider, one is wireless and another is fiber, problem with fiber is that when there is power issues it stops working and we have to manually change to wireless, all are Ethernet termination, is there...

Hi, i am trying to add another subnet to our network.

the existing network is 192.168.16.0/24 and i am trying to have 192.168.16.246 to "point" towards the 15subnet (i am running out of 16 subnet ip addresses.

trying to add a subnet of...

Symptoms on my lab network: some devices are not reachable at all while others ARE (attached to same switch).

Please see screenshot and advise what this could cause/what I can do (reset switch was already done):

Hi,

I have recently setup a VLAN in my School. I have 6 VLANS with ACL's and the routing being done by the switch.

All is working fine within the network and all VLANS working how they should be. My only issue is the Internet. We are looked...

hi guys

I basically have been gaining a lot of experience at work, but it's also a lot to do with my own initiative. I create 'tasks' to do etc for my practice to get better. However, I'd like complicated stuff in order for me to grow in...

Hi Experts,

Just narrowing down some specs for creating a few seperate internal networks starting from scratch... I have got my servers sorted just a little unsure of the Layer 3 switch looking for advise/confirmation

Dell 6224 Vs Cisco...

Hey Guys,

I have a Cisco 3560 switch which I tried to install c3560-advipservicesk9 IOS on… When rebooting the switch I get this error. I’m assuming the advipservicesk9 image I have is not compadatable to the hardware.

Question is how do I...

Hi,

I have a lab-enviromnent in which I would like to set VLAN’s.
However, I’m not really familiar with it.

I have this config:

ESX01, ESX02, ESX03
             |
HP PROCURVE 24 PORTS
            |
DDWRT SWITCH
           |
DDWRT...

I have E1 ISDN plan with 10 segregated channels and 100 DID's which are connected to my Cisco Phone System UC560. I noticed today that one of the ext. and its associated DID is not working and giving busy tune from outside. Even when I try to...

I got the server IP address and Mac address. From the switch I make out that it was connected to VLAN 111 (Reason why I figured that this server is in VLAN 111, as the IP ADDRESS of the server falls into the same subnet as that of VLAN.)
 but in...

Experts,

I have a Cisco 2960 and I only have Vlan 1,2,3.

Is there a way for me to limit only the Vlans that I want on my Trunk?

What command can I use?

Thank you

Currently, I have a lniksys router/switch in my network. switch port speed is 10/100 mbs, 4 computers are connected to the switch. If I get a gigabyte switch, connect to one port on the 10/100 switch and then moved all 4 pcs to the gigabyte...

Ok, so I am dumbfounded after doing a network install with my boss today. Basically we started at the demarc point which was installed by the ISP a Ciena 311e. We connected a Netgear NETGEAR FVS318 VPN to it and alottted over an adequate amount...

Hello Experts,

We used to have the following setup in a "cascade" setup.
3comA-connects to 3comB- 3comC connects to 3comD to 3comE and so fort. Total 7 Switches.

We bought a Cisco 2960 and decided to have all the switches connect to the...

I have an hp switch with two vLAN's that are both untagged. I have a single fiber uplink going to another hp switch in another building that has the same two vLAN's.

Don't I have to tag one vLAN to share the same uplink? Is it possible to...

Hello, My company has been in search of a small 8 port poe switch that supports vlans, simple qos but also has an sfp card slot, we have come upon the cisco ESW-540-8P-K9 switch, and we are now trying to find out of these switches can be used...

So I have a Cisco 2610 Router that receives the main pipe of our ISP.

From that router I have it plugged to a Cisco 2950.

Now every once and a while or I should say it happens a lot, the port will be blinking green and steady just normal...

I'm want to configure two ports on my 4506 chassis with one as the active trunk port to my main building (physical path) and one as my standby trunk port (wireless bridge) so if for some reason my physical path goes down, the wireless bridge will...

Hi everyone,

I have currently setup a network for a local church/school.

Equipment is two HP Procurve 1810g-24, a Cisco RV220w, trunked and everything.

The problem I am having is, I am not sure the tag/untag configuration to use for
...

Our office is using a wireless-G router located in our computer room.  Unfortunately the area adjacent to our executive offices is experiencing very weak signals.  We are considering using an additional wireless access point wired back to the...

I setup a cisco lab studying for the exam and I am baffled I can not ping between workstations.

On router 2600, it has two interfaces 192.168.1.1 /24, static internet ip,static route to the internet and is running eigrp 10 (AS) with no...

Hello Experts,

I am in the process of setting up Router on a stick.  A simple scenario:
1. Cisco Router (x1)
2. 1 Cisco Switch 2960
3. Other brand switches connecting to the Cisco 2960

I would like to know the following
a. I have Vlan...

Cisco has changed their radius commands a while back from global exec config to the interface level. I suppose this is a more granular way of doing this but i am wanting to change the GLOBAL defaults of the "quiet time" I know the command

...

There are quite a few answers that "sort of" help me with this question here but nothing that I've found that EXACTLY answers, so my apologies ahead of time if this has already been answered and I've missed it..

To the question:

My firm is...

What's the lowest cost Cisco router and swtich that could provide QoS function ? Actually, I need to identify packet based on protocols (https:, ftp, ) .

Is there any sample configuration that could show how to classify each class and apply...

Looking at two small business switches. Both 48 port 10/100/1000 switches.
Cisco (linksys) SGE2010 vs. Dell PowerConnect 5548. Anyone have any experience or comments on these two switches. They're both around $1200. Can't decide which one to...

Right now we have 2 buildings connected to each other using a Fiber Media converter box.  I have a set of switches in each building and building to building connection goes through a 10/100 Base FX to 10/100 Base TX Converter box Auto Negotiation...

Hello Experts,

I have two projects where I am linking two buildings for data. I will be using pre-terminated 62.5 multimode fiber. I was thinking of going with SC connectors because this seems to be the standard lately but I can use another...

Hello,

I am using Linksys router WRT54GL. My router is connected with modem and everything works fine - I can connect computers with UTP cables via router / modem. I can also have wi-fi from linksys router. All OK.

I only have one problem....

Hi Experts,

Can someone explain to me why I can't see the vlan 100 and name user-vlan in the show run in the first attachment, however I can see it when I do a show vlan brief? However, the second attachment I can see the vlan in the show...

Hello Experts,

I've just completed my cv to apply for positions as a Cisco Network Engineer.

I've Googled sites looking for help with cover letters specific to Network Engineers, but all I can find are generic cover letters.

I was...

Hello,
   We just received a 3560 in today. We are going to be hooking up 20 cameras to this switch which need to feed into 2 desktops and 2 servers. I am looking for the foillowing
1) Which ports need multicasting
2) Can they ALL have...

Hello Experts,

I recently asked for suggestions on how I kept on getting 0% in a category of the Cisco 642 - 813 called 'Implement a Security Extension of a Layer 2 solution, given a network design and set of requirements'

I checked out a...

I'd like to learn something outside of my area of expertise.  I'm currently a desktop/LAN specialist and I'm interested in getting more into the network side of things.  Through the aquisituion of another company, I've come into lots of equipment...

good day everyone,

I have some traffic I need to block on a catalyst 6509 layer 3 switch between two VLANs. I have dealt with standard and extended ACLs before but not to block specific VLANs from accessing each other. The concept of VALCs is...

We have configured three VLANs on new Catalyst 3560X, but for some reson routing is not working correctly - you can ping some computers while other are unreachable.

Strange thing is that show ip route displays 2 connected networks for each...

hello Expert
in our company, some users bring a wireless hub connect to network, so that they using WIFI on cell phone or iPad etc, i just want to know does it possible block this?
all end user desk port are connecting to several Cisco 2950...

I have a ZyXel p-660R-ELNK modem that earthlink ISP sent me when I signed up with them and then later I switched to AT&T (at that time it was belllsouth).  The Modem that AT&T sent me went out and I need to purchase a new one.  AT&T wants to...

I have a layer 3 access switch connected via a routed link to a  layer 3 distribution switch.  I have built two svi's for vlan 2 and 3 on the access switch.  I can create routing for vlan 2 and 3 using two different methods:

method 1)  on the...

On the console port on the back of a Cisco SF-300-24 (attached picture), can I just connect that with a regular (not Cisco) db9 cable? The only official Cisco cable I know is the rj-45 to db9 cable, but this port is a db9 console port. I have a...

Im familiar with a lot of different routers but never dealt with Cisco ones.
A place I work for is getting a new Cisco router in the next few days and I wont be there to see whats happening. The reason for it is to apply a static IP address...

I didn't where This question should go, it is a mixture of Portfast, PXE,Imaging software and DHCP:

First I need to know if the clients that are configured for PXE boot, whether they should have a static IP or Dynamic IP?
For instance if an...

Please tell me what the difference is between

cisco ios 12.2.58 -SE2   versus   cisco ios 12.2.58 -SE1

The "se" number is the only difference

thanks!

I have a Cisco device interface setup with trunk link (multiple vlans). To test if the Vlan is working as expected, do I have to use a "real" switch with trunk link setup? Is there anyway that I can use a normal PC to test if the Vlan works as...

hi guys

last night, I had a nightmare that occured once more. Our network came to an almost standstill.

We basically have around 7 switches in our server room. They vary between HP Procurve 2948 layer 3 switches to 3Com 2948's.

Last...

Is it possible to configure more than one ip to a Cisco ASA interface using one VLan?

For example, ISP gives us 3 IP address but we have only one physical cable connect to them.

If it is possible, how can I configure it?

Thanks!

Hello !

We have 2 links and one end there is Mikrotik and other is Cisco Switch, can we have STP here as the links are wireless and fiber and at times our primary is not working. Can somebody help with configuration steps on mikrotik ?
...

I need to create a redundant ring style connection between a few switches, as follows:

Main Rack will have 2 switches (01.A and 01.B) connected to each other

Rack 2 will have 2 switches (02.A and 02.B) connected to each other

I need it...

I need a switch that does Mac Filtering. The problem is that I'm noticing the definition of Mac Filtering can be different depending on the Cisco switch. That, or I'm just stupid and am not understanding the way this is typically done.

MAC...

Hello, I would like to upgrade IOS image from 12.2 to 15.0, can anybody tell me the steps and commands to do it? I have seen when entering the switch (I have a stack of 2 members) that I have flash1: and flash2:, are those flash memories related...

Dear experts

I have a specific switchport which goes into err-disabled mode around once a week and i'm trying to uncover why it is doing so.





Doing a show interfaces status err-disabled says that the reason is 'link-flap,' which i...

Hi,

I have a setup of a A5500 and a couple of E2620 switches.

The A5500 is the default GW for a couple of networks.

When putting a static IP adress on a host in a VLAN, anywhere in the network, it is unable to ping its default gw. But if...

I have the scenario in the picture, I have clear understading on how to configure the switches for HRSP but I'm not sure how I can configure the links connecting to the router so they can point to the  default gateway, if each interface on the...

Hello EE. I have a question about moving a device from one L2 switch to another L2 switch. I want to move my ASA Firewall from one switch to another. Currently all my layer 2 switches connect to 2 Cisco 3550 G12 L3 Core switches for vlan routing....

Hi Experts,

We have following source vlans and destination vlan

Src-vlans 111 (55.2.6.128/26) and 222 ( 55.2.6.192/26) - on Router A

destn vlan - 666 ( 203.36.245.0/26)- on Router B

Issue is not able to ping destination ip...

trying to understands the significance of vlan1 - is it different than other layer2 vlans? thanks

cisco 2960 switches

We had a Cisco 2960 switch that I rebuilt.  I copied the running config from an existing switch that is identical to this switch.  both are access point switches that are plugged into our core switch.  The rebuilt switch has an IP of 10.38.36.40....

Hi,

There's a new equipment that I think won't fit/slide and screw to my server rack.


server rack width is 19" or 49cm depth is 52cm.
the equipment width is 436mm, depth 293mm, height 86mm

Anyone has any suggestion about best...

Per the title, I am experiencing a network issue while trying to connect two ESXi 4.1.0 hosts (HP ProLiant DL580 G7). Each hosts will have two network connections - one to a Cisco 3560 PoE-48 switch and another to a Cisco 2960G (different VLANs)....

We're about to decommission an old server that acted as the main RADIUS server that many of our devices authenticated against (Cisco switches, Juniper firewall, etc.).  We have a second RADIUS server that's been functioning for months, I just...

We have a a pair of ASA 5510's in Active/standby connected to another pair of 2960 switches.  One switch is connected to FW1 and the other to FW2.  The switches are connected to each other using etherchannel for redundancy.  Servers are NIC...

Have a dell 3448P, a few vlans configured on it but besides that nothing else seems out of the norm, i plug a POE phone into it and nothing, i dont' get power on any port.  other than that it works fine.  Is there a way to disable POE on these?

I have a Dell PowerConnect 6224 routing between VLans, however the devices on the vlans can only access each other if the switch is set as the default gateway.  

How can I make it so the vlans can access anything on subnets assigned to the...