failover network topology

Similar Questions

• Using CDP to create the network topology diagram

  Hi all

  I'm a beginning network specialist and just thought I would throw this question and see if I can get some answers.  Well, I want to know how I can use CDP to find out our network topology so I can create diagrams and Visio diagrams, or if you know any free network discovery programs out there that can help?  Hey well any comments will be appreciated so thanks in advance and I look forward to hear something!

  When you run 'sh cdp neighbors' it shows you all the devices connected directly. If you then "sh cdp neighbor detail" for each entry it will show the IP address of the connected device. You can then connect to this and do the same thing all the way throiugh your network.

  I think that the COP may be useful for this, but you're relying on the CDP running on all devices. Sometimes it has been disabled for security reasons one must always be aware that there may be devices that do not display.

  As mentioned SNMP is another alternative, but still once, this assumes that SNMP has been put in place the device esch.

  So just be aware that you can not always get the full picture, but a combination of--

  (1) CDP

  (2) SNMP

  (3) running the determination of route router hops show but not L2 switch.

  You should get most of the information. Also, be aware that the internal firewall tend to dirty such things as well.

  Jon

• map of Cisco network topology first Infrastructure

  Hi just want to ask if it is possible to create a map of the network topology of edge of the main cisco which shows the cable devices and wireless infrastructure, or do we need another cisco product to accomplish.

  Thank you

  Hello

  Topology service is not supported in 2.0 IP, however, it is in the road map.

  for the support and the function of the comparison, you can check out the link below:

  http://www.Cisco.com/en/us/prod/collateral/netmgtsw/ps6504/ps6528/ps12239/guide_c07-729089.html

  Thank you-

  Alya

  [Note the useful post]

• failover network (or subnet)?

  Hi people,

  I hope someone can answer a quick question. We have a 3-node HP DL380 G7 ESXi 5.0 cluster. One of our subnets is config in the solo, but the vswitch has only a physical connection on each machine. I was under the impression that 'pull' the cable ethernet on a system would cause a failover of the VM to another node. Test revealed that this is not the case. So, my question is, is it a question of configuration or simply not possible with the solitary connection?

  Thanks in advance.

  BuddyD

  Welcome to the community - if you are referring to VMware HA, the answer is that any loss of network on the virtual computer will not cause a failover of the virtual machine to another host.

• Test failover network

  I wonder if there is a way to force a virtual computer to a specific network during a test failover?  I use SRM 4.0.1 with NetApp SRA 1.4.3 and a network of testbubble is created during a failover test.  I created a test network and select this network setting up recovery plan when he ask about the test networks.

  Any thoughts?

  Yes, of course, it is possible. The setting is per portgroup / VM, however.

  Change your Recovery Plan. On the "Network Test" screen, you can choose on what portgroup virtual machines will be connected during the recovery test. By default it is set to auto mode, which means that the switch internal is created on the ESX hosts.

  Michael.

• By specifying the path network topology for flat files

  Hello
  
  It is possible to specify the path network for files in the topology.
  for example:-as we specify say d:\source, can here we specify as \\netwokmachine1\source?
  
  Thank you
  Mahesh

  YES. We can. It worked for me

• Disaster recovery network topology

  I am creating an exact replica of the production network to the location of DR.  Using replication from host to host, host to vmdk and data backup, I am replicating servers and data via.  Now, I need delete it even subnet and the server and domain names.  The network of production and the location of Dr. currently use different subnet separated by a point T3 connection to point addresses.

  Main reasons:

  1. Applications were not designed with Dr. in mind.  The resources are referenced by name or IP address.
  2. Easier to clone DC and specific application systems.
  3. Other systems can be online on the subnet of DR and replication of data until the time of the disaster, then give DR server with the same name and IP address of the production system.
  4. You need to be able to put a server on the field mirrored online to test without affecting the production network and the domain.

  Considered L2TPv3, but this does not solve my problem of mirroring systems.  I can't make it appear 2 controllers domain mirrored or replicated upwards at the same time servers.

  Thinking of using a router NAT of DR subnet for the subnet of replicated production. Adds a lot of complexity and the mapping of IP conplexity.

  Whereas also the implementation of a DMZ on DR PIX with the subnet of production.  Allows me to route traffic to the Dr and the Internet subnet.  Allows me to filter traffic to avoid conflicts by IP and name.

  Of course any test that will be done will require disabling the T3 connection and access to the network of DR from a different path as the VPN.

  Looking for previous configurations, thoughts, recommendations.

  Thanks in advance.

  Hello

  It is a typical site of the DR cold installation which normally only used in times of disaster only. The only two test available ti DR site system option are as below.

  Turn off the main site communication

  Apply the NAT & ACl to DR router to link to main site.

  Option two allows Dr. validation of access and the application of the system of main site.

  Thank you

  Mustafa

• WHS network topology

  Okay, so I pulled the top of WHS on a spare PC and it seems to work very well. I can use the connector to WHS to access and back up a XP machine. But the machine could not connect Vista64. It will attempt to find the server ever and then give the option to search manually. I type the name of server assigned and then States it's downloading software but never progresses until it ends with an error and exits. I have a router broadband with two connected switches. (which serves the various floors of the residence) Vista64 machine is on a switch and the WHS and XP machines are on the other switch. None of the machines connected directly to the router.

  So my questions are:

  1. the PC should really be connected directly to the router that the WHS box is on?
  2. If so, why the machine XP works fine? It is connected to a switch on the router.
  3. If different switches are the question, is it possible to make this work?

  Hi arjay67

  Thank you for using the Microsoft Answers Forums!

  You have the Power Pack software with you CD to connect with the computer 64 bit Vista to the ESM?

  Download and install the latest Power Pack from:

  http://www.Microsoft.com/Windows/products/winfamily/WindowsHomeServer/pp.mspx

  Try these steps and see if it helps you:

  1) pull out the power plug from the router

  2) pull out the power plug from the cable modem

  (3) power re - connect to the router

  (4) the software of the WHS connector on Vista machines

  5) pull out the power plug from the router

  (6) re - connect the power supply to the switches

  (7) power re - connect to the router

  You can also post your request here:

  http://social.Microsoft.com/forums/en/whssuggestions/threads

  After back and let us know if it helped to solve your problem.

  Thank you and best regards,

  R uma - Microsoft technical support.

  Visit our Microsoft answers feedback Forum and let us know what you think.

• With 2 monkeys roaming network connected to the internet

  Hello

  My apologies if this has been discussed (I did some search but did not find anything useful). I have the question realted following a change in my network topology:

  current installation:

  -Cable modem is connected to the WAN port on my Time Capsule (3 TB Tower). Transport CANADA acts as DHCP unit (modem is silent, that is without router)

  -Port LAN of the TC is connected to the WAN of the MONKEY #1 via CAT6 Ethernet port.

  -MONKEY port LAN #1 is connected to the WAN of the MONKEY #2 port

  -Port LAN EPA # 2 is connected to the WAN of the MONKEY #3 port

  -all the monkeys (the latest models of Tower) Act in Bridge mode, but create a WLAN.

  I like that, a roaming welll workign network throughout the House.

  New installation / planned:

  -J' changed from cable to fiber to the home. So now I have a new box of fiber that offer Internet via 4 Gigabit Ethernet ports.

  -The new fiber box is physically located between the TC and the #1 MONKEY.

  -without having to pull a new cable in the box of fiber for the TC (for feed on the Internet in the beginning of the string), I was thinking about this:

  -1 Ethernet cable from fiberbox to the TC and feed the Internet through another Ethernet into the WAN port on the #1 MONKEY in the remaining string.

  -Switch the TC using the Bridge so that the fiber box making the DHCP

  However, now the TC is is more directly connected to the chain of the EPA.

  QUESTIONS RELATING TO THE:

  -I'll always be able to have a mobile network, or I will with 2 networks, i.e. 1 created by TC and 1 piloted by monkeys?

  -all Clients on the network will see always shared devices (printer, for example) on the network?

  Thank you very much for your expert advice on this.

  Rgds,

  Sascha

  -run 1 Ethernet cable from fiberbox to CT...

  -Switch the TC using the Bridge so that the fiber box making the DHCP

  It should work.  (See Note below)

  feed the Internet through another Ethernet into the WAN port on the #1 MONKEY in the remaining string.

  It should work. (See Note below)

  However, now the TC is is more directly connected to the chain of the EPA.

  Since the TC is connected to Ether even switch on the product of the fiber to which EPA #1 is also connected... TC and AE #1 are, indeed, also linked together.

  I'll always be able to have a roaming network

  Yes

  -all Clients on the network will see always shared devices (printer, for example) on the network?

  Yes, assuming the fiber box works properly.

  Important note... Your plan to have the TC and the MONKEY in Bridge Mode expected to work... BUT... Apple has another idea on how a mobile network should be configured. See the information on a roaming network in this Apple support document:

  Wi - Fi base stations: extend the reach of your network wireless by adding additional base stations Wi - Fi - Apple Suppo...

  More precisely... Apple will tell you to connect an Ethernet cable from the product of the fiber to the WAN on the TC port and set the TC for managing DHCP and NAT... just as it does now.  Then... all the rest would be put in place just as you have it now... with a connection Ethernet between a LAN port on the TC to the WAN on EPA #1, LAN on EPA to WAN on EPA #2 #1, etc..

  If you follow the advice of Apple... you'll get an error Double NAT on your network... Apple who will tell you to ignore. How well your network will work with a Double NAT problem is open to question.

  I don't recommend to follow advice Apple... just pointing out that Apple has different ideas and interesting on how to do things, which sometimes goes against the traditional rules of network management.

• Extreme slowness of local area network and Time Capsule wireless speeds

  I have a time Capsule Airport Extreme 3 G with firmware version 7.7.3 I use for lan connections / wireless and backup of all apple devices that do not use the cloud. For the last month or so sometimes I ridiculously slow speed issues that cannot be remedied with any one of them that I have tried. Speed control on my i mac or wireless on any device in any location see accelerates it half of what I pay for. If I shoot a speed control to the back of the modem, everything is ok. If I shoot a speed check in a port on my machine Net Pro FVS318G safe with Airport extreme disconnected speeds are fine. But when the capsule is used the speed is slow. This happens not all the time. In fact this am that everything was fine, she just started about an hour or two there once again. And it normally clears up in a few hours on its own. It is like someone is inside my computer slows down I can't even do a backup on my i-phone when this happens.   I bought the thinking net machine that triple nat could help I'm not using the vpn option. I'm lost and open for suggestions?

  My mac i run El Cap v 10.11.4.

  Att Uverse 18 m 1 m

  Time capsule two years old.

  Check the speed of 1-6 m down issue when happening, 17-18 when well. done before also.

  Can you please describe your network topology?

• Cloning of mass average Debian over the network on Tecra M5

  Right,

  Here go us!

  I am part of a team of support engineers for a University where we lend laptops to our students for periods of weeks (up to) 12. All of our laptops are identical Tecra M5 with a preconfigured image of XP Pro SP2.

  Currently, we use the method of "Insert the XP CD"-> "Boot to CD"-> "Format disk" (to guarantee no student left courseowrk on machine)-> "Install XP via CD"-> "use backup XP to restore a picture."

  This system works... but takes half an hour to make each machine from start to finish.

  I am competent PC user and am aware of the opportunity to multicast an image to a group of PC/laptops... such as detailed below to my success up to now...

  I just finished setting up a single server (a powerful RM P4, 1 GB DDR2, 160GB SATA & 100MBit LAN) to the customer several cloning using Debian Etchy, DRBL and CloneZilla server.

  Client machines are laptop computers Tecra M5 and are all on a private LAN directly to the image of 'server '.

  (1) we can successfully PXE boot ("magic packet"), all machines via our switch (a 40 port NetGear fast ethernet) and all machines begin to start - this is achieved thanks to a nifty bash script, I wrote "wakeonlan" machines with 1 second interval (only 10 machines both for stability)
  (2) the DRBL APS IP server address to all machines that they PXE boot
  (3) the startup of machines in our option CloneZilla (Linux network, MemTest, Full CloneZilla to restore the disk image)
  (4) the machines all receive them with SUCCESS the disk image (a gzip'd SD clone of one of the Tecra M5, which already has our installer of Windows XP)... Although quite slowly when + 10 machines are connected to the local network (I'm working on it)

  NOW, the CloneZilla server is configured to let the machines "poweroff" once the image has been copied on the hard disk of laptop and finished in synchronization with the server.

  The Linux "shutdown" with "poweroff" command is called from a SSH (fully automated using the control of CloneZilla center - a button of window BACK basic writing style in Linux) and all machinery, copied once the hard disk image, should theoretically then off COMPLETELY as if they had been "naturally stop. For example, by clicking on "Start-> Shutdown" in Windows.

  I installed Debian on one of laptops and run from the simple "halt Pei" which stop the laptop and called ACPI to turn off the machine... it works as if I had done "Start-> Shutdown" in Windows. So not bad here.

  I try then "halt Pei" remote machine using SSH from the debian server.

  Our network topology is simple:

  Server-> Switch-> customers (up to 10)

  'Customer' Debian runs the stop that she has received the signal "halt-p" from the server and begins at the stop. Great!

  However, just before the laptop actually turns off, it stops. Laptops remains "under tension" and the "power" and "SlimSelect" LED remains lit.

  Note: I even tried to remove the drive of DVD of SlimSelect that the Tecras come up with - without success.

  _Things tried: _

  * sudo sh: * ssh x [email protected]_IP stop Pei

  * batch_halt.sh file:*
  #! / bin/bash
  SSH x [email protected]_IP killall-9 - l
  SSH x [email protected]_IP init 0
  SSH x [email protected]_IP stop Pei

  To hopefully reach-> kill all processes-> enter runlevel 0-> halt and 'off' the laptop

  The local network is NOT connected to an external network is absolutely safe.

  It seems as if the 'Pei halt' command locally is the only thing that will fuel actually off the machine... all 'remotely' orders still achieve 95% completion... we only result to the power and SlimSelect LEds lit-> which means that the laptop is still under tension (!) and thus reducing the life expectancy of the power supply.

  Is there someone who might know how to get a "fully working" basic ssh stop through switch work?

  Thank you very much...

  Ice Ice Babeh

  Hello
  I think it is a very specific question and I can only advise you to check the BIOS settings. Maybe there is an option that you set for this work entirely.
  Have you tried some Linux forums as well? There are often good instructions on these topics as yours.

  Welcome,
  HomerJ

• Why my Macbook Air poster as a bridge to my Wifi network?

  We fight network gremlins in our small office.  We have an unnecessarily complicated network topology, but I don't think that the 'complexity' network is the fundamental issue (guess total).  Here's the situation.

  Periodically, we have network problems that range from individual devices or IP phones, problems at the Internet, across the Office of failures.  The Internet seems to be stable during the network problems and is also big enough to handle the traffic.  There seems to be no problem with the Internet itself - FYI...  We have a mix of Mac and PC, printers, file server and IP phones using the network.  The network is a mix of wifi devices connected and wired devices (PC/Mac wifi wired connected...printers/phones in General).

  The network itself is as follows:

  AirOS WAP which does not respect NOT IPs, just toward the life of a HP switch, which in turn is connected to a D-Link router that handles DHCP.  D - Link is then connected to our Internet modem.  The AirOS WAP is used because it is the signal strength and performance are supposed to be better than the performance of the D-Link wifi.  Note: The wifi radio is turned OFF on the D-Link.  All attached devices appear in the ARP table on the device from D-Link (as expected).

  But and I finally get to my question on the AirOS my MacBook Air (El Capitan) is displayed in the ARP table under a bridge.  It is the only device that appears in the ARP table besides than the D-Link (showing also as a bridge - what is planned).  In other words, my Mac "is differently from any other device in the office, we want to eliminate as a potential problem."

  Any who have thoughts on why my Mac is illustrated as a bridge.  I checked my network settings and nothing seems out of the ordinary on my laptop.  (only the bridge I find together are thunderbolt - that is NOT connected)

  I'm sure that someone has an idea or two on why my device showing as a gateway into our network, and if this could be a problem.

  Thank you.

  After the Ubiquiti AirOS AP firmware up-to-date have been upgraded - if it is not already there - you have Ubiquiti why their software of AirOS reports what is shown.   AirOS has many configuration options and can be configured to distribute the signals with multiple devices Wi - Fi - what you see here, what version of AirOS is involved, how the device is configured, it is something that people of Ubiquiti are likely better to troubleshoot.

  The only way that I expect to see a Mac acting as a bridge is via system preferences > sharing > Internet sharing or maybe lower configurations of command line for access to these parameters.   If Internet sharing is disabled, I would not expect OS X works as a bridge.

  I would be the network inventory and nettoieriez configuration.   (Set in bridge) modem, firewall, to move, to cables and AP (s) systems.   I would use connections wired to the APs when possible and WDS where not.

  If you have the OS X Server autour (this forum), then those who need static IP addresses and will probably also want to wired connections for performance reasons.

  If one of the servers in use is accessible from the outside, we can a required more complex network configuration if you want to isolate the damage caused by a failure of the server.

  Wi - Fi can have serious interference problems in some areas.  Interference can wreak havoc with the connections Wi - Fi and AP, that can walls and anything that can block signals.

  If it's really a D-Link router (like the series DSR, etc.) and not a D-Link gateway area, these routers are not very effective firewall.   He worked with one of these.   Really hard to guarantee.    Not what they are built, either.

• Home Networking issue - Apple Extreme + 2 airports of Apple

  I was wondering if there was nothing to do with my current setup or if I expanded my efforts wireless...

  This is the current situation. Internet broadband from Time Warner. I've reconfigured the Arris modem to act as the router and set up my Airport Extreme as the modem. Cable broadband wired in Arris - ethernet in Airport Extreme. Running Mac OS on everything.

  Airport Extreme radio 2.4 ghz to Airport Express in a room in the corridor (defined on the extension of the network). (All THE LATEST MODELS of AIRPORT EXTREME & EXPRESS)

  2nd Airport express in the bedroom (network extension) - Apple TV connected to wireless.

  It would be a bit of a pain to wire all of the way in which the provision is. I live in an apartment in Brooklyn, so there is a lot of interference. I configured everything for the best channels possible & DNS settings.

  In the living room, I have to get + 115 MB/s - and barely sufficient in the bedroom to disseminate the Apple TV. Some days are better than others, but I would really like to try for more consistency.

  I guess my question is I've done everything I can do to maximize the speed (without wiring or have internet installed in the back-end of the apartment).

  Is there anything else I can do?  Here is a picture of the configuration. Thank you.

  

  Assuming that the diagram on the left is about geometrically exact, the AirPort Express to the show probably is not much other than contributing to wireless interference which is almost certainly make life miserable for you. AirPort Express 2 has to communicate wirelessly with AirPort Extreme, as shown in the diagram of the AirPort Utility, but it is still further than what is Airport Express 1. Apple TV can connect to, or not, but its location relative to the extreme, is a reliable streaming challenge.

  Try moving 1 Express airport closest to the extreme, or position the extreme in a more central location. Ideally, the extreme should be in 1 room and 1 Express should be in the living room, creating a network topology more closely to what is stated in the form of AirPort Utility.

  Since you will need a cable between it and the modem which does essentially the same thing as the extreme and Express 1 with Ethernet cable anyway, and it's the only solution, you are likely to find acceptable. A network 'Wireless' is always a study of compromise. Video streaming is gourmet in-band bandwidth and intolerant to the interference. As much as you don't want to install one, a cable network is the solution to this problem.

  I configured everything to the best possible channels .

  Leave them all on "automatic". Try to manually force selection of the channel to be relatively "quiet" ones is a futile exercise because everybody does the same thing. "Automatic" frequency agility allows the specified channel to become unusable.

• Remote Desktop in the network does not work

  First time VPN newbie. I need to set up the vpn for a small company of friends using RV082 so, as a test, I put up here at home using a very basic configuration. The network topology looks like:

  Cloud-online cable modem => RV082-online-online PC win7 DIR655

  On a remote site, I launch QUICKVPN, enter the necessary data and connect. Setting up the Office remotely and put the IP address of my pc at home and the user name to logon and after a minute or two, he says "unable to connect to the computer" (or words to that effect). My home PC has been configured to allow remote desktop connections and this has happened in the past, but not since the installation of RV082. There is nothing in the logs of the PC, or in the newspapers of the RV082. What should be my line of inquiry?

  These products are processed by the Cisco Small Business support community. (URL: https://supportforums.cisco.com/community/netpro/small-business )

• Wireless network breaks down Internet when transferring over network

  I about gave up on that, but maybe someone can help.

  I have Windows 7, my wife's computer has Windows Vista

  There are also other computers on the network in the back using 7 and XP I think, but they are not involved in this problem directly.

  My wife uses version 2 of Linksys Wireless USB adapter.  My HP is a built-in wireless adapter to the and I can't check from here, but I think that the problem is caused by his computer (or some sort of incompatibility between his and the router is a Linksys wrt54g)

  in any case, the problem occurs when you try to transfer files between two computers (normally mine to his).  It's quite slow with only 1 meg / minute such as displayed by the dialog box, and it blocks the internet completely.  As soon as transfer us what it is, it just seems to kill the network.  We can download and surfing the internet but the computer to another, it just seems to die.  Now I think that I transferred to other computers (when my mother was visiting with his laptop) without problem, but with my wife of vista computer, it just dies.

  Clues as to why this happens?

  Hello

  It seems that something is wrong with your network topology.

  If the router restarts and he doesn't back the Modem connection, I doubt that it is caused by computers.

  What model of Modem you have and how the router WAN port keeps Internet active.

  Ensure that your Modem is a Modem only, or it is a Modem/Router, so using a second router you create double route that destabilize the network.

  BTW, if it was my system the first thing I will do is put temp computers next to the router and cable connection.

  If there is a difference in behavior between the solid wire connection and USB wireless (whose rather fragile for heavy network works at first), I know better where I am.

  Jack - Microsoft MVP, Windows networking. WWW.EZLAN.NET