Problem with DHCP SG200-26

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• Problem with DHCP broadcast between VLAN

  Hello

  I trying to solve the lab that I set up, I have a problem with broadcast between VLANS with my DHCP. I looked around the vmware community to find my answer, but I did not who is right why I post here!

  So here's my situation :

  • ESX with 2 race of VM:
    • An R2 of 2012 Windows running a DHCP server with a configured scope
      • This virtual machine is assigned to the vmnic4 with the port VLAN 100 group
    • A Windows 7, which I use as a customer
      • This virtual machine is assigned to the vmnic4 with the port VLAN 110 group
  • Switch Cisco with a simple configuration:

  interface FastEthernet0/1

  Description LINK FOR ESX

  switchport mode trunk

  switchport nonegotiate

  interface FastEthernet0/24

  Description OF LINK ROUTER

  switchport mode trunk

  • Configuration of the Cisco "router on the stick:

  interface FastEthernet0/0.100

  encapsulation dot1q 100

  10.1.1.254 IP address 255.255.255.0

  interface FastEthernet0/0,110

  encapsulation dot1q 110

  IP 10.1.2.254 255.255.255.0

  IP helper 10.1.1.0

  
  

  The resolution of the problems that I did:

  • Affecting the client static IP and that both virtual machine can ping each other
  • Moving from the client to the same VLAN as DHCP server, and the DHCP server is to give the client an IP address.
  • Sniffing the packet:
    • I can see the client DHCPDiscover
    • I can see the router with the command "debug ip dhcp server packet" package passed on the 10.1.1.0.
    • I am not able to see the packets from the router to DHCP perspective

  That's why I guess miss me something ESX configuration.

  Thanks in advance for reading this post!

  
  

  PS: I've linked a vswitch configuration screenshot
  

  I think that you have configured an incorrect address of IP support, take a look at the following line:

  IP helper 10.1.1.0

  
  

  Your DCHP server is really 10.1.1.0? I think not, since 10.1.1.0 corresponds to the ID of the network 10.1.1.0/24 network.
  

• problem with dhcp Cisco sg200 voice vlan

  I have cisco sg200 50 p connected to the switch cisco 3750. I just wanted to separate voice (vlan2) and data (vlan1) VLAN. I created vlan 2 as my voice VLAN and separate dhcp server for vlan 2 to give IPS for phones. However the phone ip connected to my voice vlan (vlan 2) does not receive the ip address of my dhcp server vlan 2.

  the dhcp server is connected to a switch with an access port (vlan2-voice) 3750

  two switches are connected through the trunk ports and allowed vlan 1 & 2

  IP phone is connected to sg200 via the access port (vlan 2).

  Note: there is a pc connected to the ip phone

  I'm really grateful if someone can help me with this problem

  Hi Ruchiran,

  To cover the base, ensure that VLAN 2 is added to the database VLAN on the 3750. Simple by using the command "show vlan id 2", if it is not found, you must first create the VLAN 2 on the 3750.

  Second, if you connect the same IP phone directly to the 3750 on an access port, vlan 2 unidentified, is the phone receives IP address as you hope?

  Then, on the trunk of 3750 connection to the SX200. Building the trunk when using a command like "switchport trunk allowed vlan remove 1-4094," then build the trunk more precisely with the VLAN ' trunk switchport allowed vlan add 2 "who will score 2 VLAN port." "

  On the SG200 switch, must be defined the trunk and VLAN Tag 2 on the port to connect to 3750 then the connection to the phone port should be 2 VLANS not identified as access port.

• WLC5508 problem with dhcp and flexconnect local switching

  Hello
  I have a new WLC 5508 with firmware 8.0.133.0 (suggested one right now) and I'm trying to set up a WLAN with flexconnect and local switching, but when I try to connect a client it is not getting an IP address.

  Here's what I did:
  -put the AP mode flexconnect
  -support vlan in the AP has allowed
  -local switching license and only in wlan
  -spread the vlan from AP to the local gateway
  -put the IP helper on local and pointed the wlc management ip gateway
  -set up a scope for the vlan Server dhcp internal WLC
  -set up a working group with the vlan-wlan association flexconnect

  Here is what I checked:
  -l'AP obtains an IP address in dhcp in the vlan, and a lease for that appear in the DHCP Server internal to the WLC
  -If I put the interface vlan on a switch in DHCP it gets the ip address of the same way
  -If I set the static IP address in the wireless client it ping the local gateway and navigate normally
  -J' tried the deactivation/activation proxy DHCP in the management connected to the WLAN interface, but nothing happened
  -J' tried Central DHCP activation of treatment with no luck

  It seems a dhcpdump on the wireless client client ask for an IP address, but get no response, as if it were the DHCP request is be filtered or diverted somehow.

  All you other ideas?

  DHCP on the controller is not a real dhcp server, see it that way. The management interface is used when defining aid ip and proxy dhcp must be enabled for internal dhcp. In your configuration, dhcp only works for the AP and should not work for any cable customer. You should be able to use the IP helper pointing to your WLC management interface but also make sure that you create an interface on the WLC for the local subnet and assign the interface to a correct address, even if it is not actually using it. Then in the new dynamic interface of this local subnet, you create, make sure that the primary dhcp is the ip address of the controller management. I think it works.

  I would really use a true if possible dhcp server or even put a dhcp scope on the interface of L3 on the production site.

  -Scott

  Please evaluate the useful messages *.

• DNS or DHCP SG200 - issue 26

  Hi forum

  I'm having some trouble with a SG200 - 26.

  Its new and I think the only adjustment was its IP address.

  I think that all other parameters may be by default/s.

  All our workstations and the servers were connected through the switch as expected.  One of these servers providing DHCP service.

  We also have a bunch of Cisco phones that worked fine with the old switch, BUT...

  When I plug the phone in the SG200 - 26, they begin to initialize.

  After the message "Initializing network", they are all stuck on "check the DNS.

  It seems that all phones can not get any IP address or DNS of the DHCP server settings, so failure is assured.

  Please and thankyous for advice or hints to make it work as you want.

  I hope it's just a PBKAC.

  I have quite the same problem with a SG200-26, but the effect is larger.

  Several Cisco 7911 G phones operate smoothly on our network, before connecting the SG200-26.

  After having connected the switch cisco (15-30 seconds), they began to 'record' status and getting stuck there. Despite the fact that they were already registered and work, they become inaccessible even by PING.

  Note that the phones are NOT connected to the Cisco switch, however they are affected by its presence.

  The earthing switch Cisco also restores the normal situation of the 7911Gs (after 20-30 seconds).

  To complicate my understanding, the PC are NOT affected by the presence of Cisco SG200-26.

  As for Brian Roper, the game only I changed the switch are name/address/password. No VLAN.

  You can guess that such a device is pretty devastating for our services, instead I bought to solve problems.

  Any other suggestions?

• OfficeJet 6700 DHCP causing problems with airprint and web services

  I find it kind of interesting that this printer does not properly with DHCP enabled by default and more easy to use configuration.  My new printer seems to require to manually set the ip and dns settings before the features of web services or airprint worked correctly.  It was strange because printing from a PC and iMac worked well, it was that only the web services feature (unable to connect to the server) and the airprint from IOS devices failed (printer shows up but just disappeared rather than printing impression actually).  Someone else has seen this and not do anything to solve this problem?

  The problem with this is effectively resolved through static DNS, generally. The reason it is and not with other functions, is that our print servers that connect you with are able to communicate more easily with some DNS configurations on the other.

  For this reason, HP recommends generally defining the DNS for your printer on the parameters of Google DNS: 8.8.8.8 & 8.8.4.4.

  Does that answer your question?

  Have a great day!

  

• Having the problem with the function on SG300 Dhcp / 500?

  Having the problem with the function on SG300 Dhcp / 500? now I can use the dhcp server on the two model, but have a problem.

  My problem is when I create

  VLAN 1: 192.168.0.1/24 dhcp pool 192.168.0.10 - 250

  VLAN 10: 192.168.10.10 - 250 192.168.10.1/24 dhcp pool

  case 1

  I plug the pc to vlan 1 can I get ip 192.168.0.11. But when I change this pc to a new port in vlan 2 I always get the same ip address. why I can not get IP of vlan2.

  case 1

  I plug the pc to vlan 2 I can get ip 192.168.10.11. But when I change this pc to a new port in the vlan 1 I always get the same ip address. why I can not get IP of vlan1.

  but when I have access to the switch and remove the link after that that i will get correct IP.

  I think this is the bug of this firmware. Could you help this case.

  This is a known bug that is the setting of Cisco

  Sent by Cisco Support technique iPad App

• Problem with SG-200 and access point on VLAN

  I'm having some problems with the configuration of VLANS on the SG-200 and the WiFi access point. The access point (a TP-Link WA801N) is able to access the internet when it is plugged into a port that is on the default VLAN (1 PVID). If I plug it into one of the other VLAN then all clients connected to WiFi to lose access to the internet and can not access on the local VIRTUAL network devices. I've used this configuration with a Cisco WAP4410N of first generation.

  I'm not sure if it's something wrong with the way I configured the switch or a problem with the access point.

  The setup I have is:

  Modem/router ADSL (7800N billion)

  |

  -------------------Port 1--------------------

  |                                               |

  |               SG-200 08 |

  |                                               |

  ---3---port 8 - port

  |                    |

  Access point |

  (TP-Link WA801N).

  |

  SF - 100 D

  The port configurations are

  Port Mode PVID membership

  1 general 1 1U, 7U, 666U

  2 general 1 1U, 7U, 666U

  3 general 7 1U, 7U

  4 General 7 1U, 7U

  5 General 7 1U, 7U

  6 General 7 1U, 7U

  7 general 1U 666, 666U

  8 General 1U 666, 666U

  Iain,

  You have virtual local networks put in place on your router? The subnets that you use on each vlan? The router will give DHCP for each vlan?

  The SG200 isn't a fully managed layer 3 switch, it's just a "smart switch" so you can not actually be able to do simply only switch. A sg300 mode layer 3 would be able to do this because it is a fully managed switch.

  If the router is configured with the VLAN, vlan 1 unidentified, the rest the tag, the router-> SG200 port is trunking and the others as access ports on their vlan respective. Once the router is configured, this video contributor forum albums and Cisco employee David Hornstein is very useful to correctly configure the switch.

  Best,

  David

  Please evaluate the useful messages.

• Satellite L70-A-118 - problems with WiFi after Windows 8 to 8.1 Win update

  Dear Sir/Madam,

  After that update of Windows 8 for Windows 8.1 WiFi disconnects regularly and if there is a connection
  the connection is limited.

  I followed the update instructions I downloaded with the Windows 8.1 drivers.

  The WiFi LAN adapter settings are intact on DHCP.

  Waiting for assistance to help me a stable wifi connection.

  Kind regards

  Low van Leeuwen

  Two weeks ago I've updated my Satellite U940-103 and everything went well. There is no problem with WLAN. I use it all the time.

  What model of laptop do you have?
  Have you installed the driver for the Toshiba download page or driver provided by Windows update (sometimes classified as important update)?

• Satellite A350 - problem with Internet

  Hello world
  I bougth Satellite A350 with MS Windows Vista Home Premium a few days ago and I have the problem with wireless Internet. It is impossible. I have a connection with my wireless linksys router and that's all. I can't connect to the Internet. I can't get the IP address of the DHCP server, and it is "limited connectivity".
  Can someone help me what to do?
  I read a few posts on the Forum and I think the best idea is to return to the workshop, grab the laptop and forget to Toshiba for EVER. I hope that it is possible to do. Earlier, I bought a PC laptop Toshiba-No... no problem. Everything is OK, everything works OK, Internet connection without problem.

  Concerning

  Laptop and this card external WiFi use the same standard WLAN?
  Have you tested when you set the WLAN on your laptop to the standard G only?

• NETGEAR D7000 - Mode Access Point - connection problems with iOS Devices

  Hello

  Having a problem with my Netgear D7000 in mode access point.

  My laptop (MacBook Pro) can successfully connect to WiFi and my PC connects fine cable using the D7000 as a switch.

  iOS devices, however, hurt that is to get or maintain a connection - even if they connect to and then some time later they will fall the network. Go to settings shows the client attempts to connect, but seems to be stuck with an assigned random IP (not on the subnet of law), no gateway by default, etc..

  iOS clients are an iPad 3, iPhone 5 & iPhone 5 c. All about the latest version of iOS.

  Other access points by train (Belkin, billion) that's fine.

  DHCP etc. everything is managed by my router which is a constant for all devices and access points - but I tried to change that, and he has not made a difference also.

  D7000 is on the latest firmware (v28), I tried to reset it and setting up from scratch, but no joy.

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  Change the channel seems to resolved this problem.

• Problems with WiFi after put 10.11.2 up-to-date.

  Mid 2011 iMac.  Problems with WiFi after put 10.11.2 up-to-date.  No associated network.  Everything was fine before the update. All the pre 10.11.2 device works fine.  Anyone else having issues?  I have to disconnect and reconnect manually.  WiFi drops every 5 to 10 minutes.  Nothing has changed on the machine something of the update.

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  Thank you in advance for the answer...

  Hi Captainsniz

  There are a few things to try. Keep doing this until the problem disappears.

  First of all, if you have not already, shut down the computer completely, wait about 1 minute, then restart.

  Disconnect the wifi network either via system preferences, either by pressing the "Option" key and clicking on the wifi menu bar icon.

  Reset the DHCP lease by going to system preferences > network and show Advanced Options, and then click the button to "Renew the DHCP lease" TCP/IP tab.

  You can delete the wifi network of system preferences > network > network name... then close system preferences. Then reopen and add the network in.

  You can also restart your wifi router, it erases the old connections. Most of the routers you just turn off and wait a few minutes, then restart. You can also reset your ISP modem if you have a.

  Finally, you can try to reset the PRAM and SMC on your Mac. I'll get this info here on Apple Support KBs for your particular Mac.

  Be sure to back up your computer.

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• HP Color LaserJet M277n MFP: HP Color LaserJet MFP M277n, no problems with scan to folder network and internet connection.

  I just bought a 277n MFP which I am running wireless. I have problems with:

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  2 - definition of networks for scanning file (this is how this problem started because I tried to update the firmware)

  1.

  Searched the forum and found some good articles. Tried to restart and change the DNS as shown without success. Other means?

  2. follow-up guide how to set up an SMB shared folder, but without success.

  I shared "\\Johans-MacBook-Pro\users\johan\documents" under OSX and did the same thing in the printer web setup. Even tried with the entrance of my user name and password. When I press 'save and test' I don't have that "the test failed. Try again. »
  Any suggestions?

  Best regards

  Johan

  Hi @Johan84,

  You can use DHCP or an IP fixed, but you will need to set the DNS.

  Disable the IPv6 setting on the printer.

  Go to the printer settings.

  Configuration of the network.

  Network services.

  IPv6.

  Turn the power off.

  These steps should help with scanning to email.

  Let me know. Thank you.

• problem with xp service pack 3

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  What application or antivirus security suite is installed and your current subscription?  What anti-spyware (other than Defender) applications?  What third-party firewall (if applicable)?  Who were these applications that run in the background when you installed SP3?

  A (another) Norton or McAfee application has already been installed on the computer (for example, a free trial version which is preinstalled when you bought it)?

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  http://support.Microsoft.com/kb/953791

  Device Manager may not show all devices and network connections may not display network connections after installing Windows XP Service Pack 3
  http://support.Microsoft.com/kb/953979

  A Windows XP SP3 computer loses wireless connectivity when it returns to sleep or hibernation, or you receive an error message when you try to put the computer to sleep or into hibernation:
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• Printing problems with XP and Lexmark-documents are just stuck in the print queue

  Original title: printing problems with XP and Lexmark

  Until yesterday, I was able to print OK using Windows XP and a Lexmark Printer series 3500-4500 with wireless capabilities.  Reported network test wireless (on printer) and report indicates that there are no reported problem, also did the diagnostic test and which shows no problem either.  I can't print and documents are just stuck in the print queue - please can someone help, it drives me crazy because it's probably a very simple solution.

  I guess you do not have all of the error messages.

  It is possible that comes to mind that your printer has received a new IP address of your router (this could easily happen if you have several computers and other devices that connect to your wireless network).

  Find the IP address of the printer of his network diagnostic page.
  Click Start > printers and faxes, right-click the printer and select Properties
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  To avoid this problem in the future, you must configure the printer to have a static IP address.  See your printer User Guide for instructions.

  Choose an appropriate subnet address (i.e., has the first 3 groups of numbers the same as the other addresses in your network) but who is not in the range of addresses assigned by the DHCP server on your router.  See the User Guide of your router for more details.