Cisco Discovery Protocol

Similar Questions

• Cisco Discovery Protocol through SDK

  Hello

  is it possible to get the CDP information appearing on the Configuration - & gt; Networking of tab in the bubbles next to the vmnic in VC, via the Perl SDK? I couldn't find any clues in the API reference. It would help us to evidence the VLAN on the pSwitches.

  Bye, Chris

  You'll want to use the QueryNetworkHint method which returns the CDP information of your Cisco switches if you have enabled on the vSwitches and physical

  =========================================================================

  William Lam

  VMware vExpert 2009

  Scripts for VMware ESX/ESXi and resources at: http://engineering.ucsb.edu/~duonglt/vmware/

  Twitter: @lamw

  repository scripts vGhetto

  Introduction to the vMA (tips/tricks)

  Getting started with vSphere SDK for Perl

  VMware Code Central - Scripts/code samples for developers and administrators

  150 VMware developer

  If you find this information useful, please give points to "correct" or "useful".

• IEEE 802.3 af, options of distribution of power on Cisco products

  Hello world.

  IEEE 802.3af - 2003 described five 5 classes of power a device can belong to. It is worth noting that this isn't

  required that a seller of PSE implements classification of power, as these classifications are optional.

  Cisco implements this option in its IEEE - 802.3af - compliant device PoE (ip phone. AP, etc.) ?

  (1) cisco has adopted a cautious approach to the allocation of the authority by which the PSE will allocate either the IEEE 802.3af standard class, the Cisco Discovery Protocol negotiated value or 7W per device, the discovered device.

  (2) what is the default if we have a switch compatible cisco 802.Wireless af and cisco 802.3 af compatible peripheral PoE IE will allot of power using the classification of power or uses CDP to allocate the desired power or simply allocate 7w?

  Thank you

  What happens if the device was not a Cisco device?

• Virtual machines communicate don't not via cisco 4001i module, can not ping gateway

  We have just buit IBM blade with a switch cisco nexus 4001i 10gE module.  The service console communicates via a different network module, but VM networks are mapped to network adapters that use the cisco nexus 4001i circulating on 10gE... Unfortunately, the service console connections are working properly, but virtual machines cannot ping the gateway.  We move the virtual machines on the service console network and they work.  The NIC adapaptors are configured to 10, 000mbps but are appearing at only 1, 000mbps.  Currently, we don't have all the switches-dv put in place and run on standard v-switches within ESX, which brings me to this question: VMware does require the nexus 1000v to work with cisco 4001i?  Also, another symptom, the cisco discovery Protocol is not collecting the information since the passage of these adapters that are connected to the 4001i but take the switch info at the other network management modules.

  Anyone have any ideas what we do wrong?

  Had a very similar problem with a very similar hardware.  Turned out to be a problem with a configuration between the Nexus 4000 and Catalyst switches they're connected too.

• identify MAC VMNIC side addresses physical switch (cisco)

  I have several VMNIC connected to 2 network switches to balance the load of the guest computers.

  On ESX server if I run 'ifconfig - a' and can see the MAC addresses of each vmnic, but these are not the MAC addresses shown on the side of the cisco switch.

  How will I know what vmnic is related to what physical switch port?

  Another issue is on the support of the CDP (cisco Discovery Protocol), I see that ESX server has a status of 'listen', what do I need to activate 'advertising' for the cisco switch identify? Any relationship between?

  Thanks in advance.

  Take a look at this article for more information about the CDP: http://blog.scottlowe.org/2009/03/24/viewing-cdp-data-on-vmware-esx/

  You must activate this in the CLI by using the following:

  esxcfg-vswitch -B {listen,advertise,both,down} vSwitch0 
  
  (e.g.)
  esxcfg-vswitch -B both vSwitch0
  

  To see what it is defined, you can use:

  esxcfg-vswitch -B vSwitch0
  

  =========================================================================

  William Lam

  VMware vExpert 2009

  Scripts for VMware ESX/ESXi and resources at: http://engineering.ucsb.edu/~duonglt/vmware/

  http://Twitter.com/lamw

• What device is my node connected to (CLI)?

  I am currently engaged in trying to find what my current node device is connected to and which interface of this device, I am connected to know

  -I know not how to telnet (using putty)

  -I can prompt CMD and ipconfig/all to get my information from devices (and default gateway)

  -I understand ping/apr/cdp neighbors

  However, using these tools, I can't quite seem to put togeather how to find the next immediate device and the port I am connected to without that direct switch IP address on site.

  Make sure that the Cisco Discovery Protocol (CDP) is enabled globally on the switch (run cdp) and on each port (cdp enable). These are the default settings, but may have been disabled for security reasons. Launch Wireshark, filter by cdp packet type and move from one port to the other. Give CDP packets you change your name, IP, IOS version management, and what port you are connected to (among others).

• SG200-08 newbie questions

  I recently bought the Smart Switch SG200-08, but I have some "beginner questions" on this subject that I started using it.

  The edge of the watch 1.0.1.0 firmware. What is the latest firmware for the switch?

  Should I enable auto configuring IPv6 and DCHPv6 in my switch settings to be ready for IPv6 as my ISP it place on the road?

  How can I go about changing of the switch username? I could easily change the password, but with problems for the user name to modify.

  Do I need to do anything on the LLDP-MED settings? What is that?

  How can I confugure time settings system so that the switch works in my timezone (Central USA time)?

  Thanks a bunch for all help!

  Hi Nathan,

  (1) firmware: it seems that the latest firmware for the SG200-08 is 1.0.5.1.  You can get it in the Software Download Center. I don't know if this link to the software would work, but let's see.

  (2) IPv6: You use NAT of your router? You're going to be using ipv4 or ipv6 internally addresses? Making assumptions on your network, I would like to leave it turned off for now.

  (3) user name: in the user interface web ther, click the administration drop-down list, and then click user accounts. You can add/modify/delete here.

  (4) LLDP (Link Layer Discovery Protocol) and CDP (Cisco Discovery Protocol) allows the switch directly connected neighbors and see their capabilities and settings automatically. Do you use other Cisco devices on your network or IP phones? For example, the vlan voice can be automatically determined using CDP/LLDP.  Please see p. 53 of SG200 Manual here for more details.

  (5) system time can be set under administration-> settings-> time time system.

  Best,

  David

  Please note all useful messages.

• Access Port configuration

  We have Cisco TelePresence SX10 installed but I have problems with it... Switchport switch is configured with top 40 of VLANS and VLAN to the 24.Now when I attribute IP unit VC on 40 of VLAN static it not all Ping on the other hand when it is left on the DHCP protocol takes an IP address in VLAN 24 and works very well. For more to solve the problem, I have configured port switch as a single access VLAN 40 and it works fine:

  Scenario1:

  Switchport top 40 of VLANS and VLAN 24: VC with IP of VLAN static 40 - place: ping fails.

  Scenario2:

  Switchport top 40 of VLANS and VLAN 24: VC on DHCP takes IP from VLAN 24 for VLAN 40 has no DHCP scope defined - result: ping works

  Scenario3:

  Switchport top 40 of VLAN and not THE VLAN 24: VC with IP of VLAN static 40 - place: ping works.

  Any ideas as to what's wrong in scenario 1

  Thank you

  Karan

  The Cisco SX10 has a value for the mode of VLAN voice if it is set to auto and cdp (Cisco Discovery protocol) is present in the network the SX10 will use the value of vlan provided by CDP to crush any vlan manual.

  Vote kindly if it helps.

• What is the average of tlv cdp?

  Anyone know this command is? how it will be useful for my server?

  Hello

  It's a Cisco proprietaryprotocol

  Cisco Discovery Protocol (CDP) is mainly used to get addresses of neighboring devices and discover the platform of these devices

  Type length values (TLV exposure) are components of the integrated information in advertisements for the COP, who gives details such as address,-l' the device id, platform...

  http://www.Cisco.com/en/us/docs/iOS/12_1/configfun/configuration/guide/fcd301c.html

  It is useful for devices Cisco discover neighbors and its details.

  Thank you

  Riadh

• VMware esxi5 problemi con the rete. The comments not effettuano he ping back the host

  Hello to all,

  STO sbattendo tested con questo problema da at least due giorni e non capisco causa.

  Macchine comments sound provviste di due schede di rete ognuna delle quali punta ad UN vSwitch (vSwitch0-> vmnic0,-> vmnic1 vSwitch1).

  The prima anomalía sorge quando, tramite vSphere Client clicco sulle info delle vmnic, ed ottengo "Cisco Discovery Protocol is not available on this physical."

  adapter. Typing sulla shell he comando esxcfg-vswitch - b vSwitch0 ottengo two quindi in theory should be abilitato.

  The adapters sono delle Broadcom NetXtreme II BCM5709 1000Base-T network. By material questo ho anche da aggiornamento driver

  downloaded a questo link http://downloads.vmware.com/d/details/dt_esxi50_broadcom_netxtreme_17034v501/dCV0YnRAJXdidGVkZA==

  Unfortunately he problem persists. Some suggestions?

  Grazie anticipatamente.

  P.S. the community of Bella!

  Ciao,.

  da quello che vedo nello schema the vmk0/1 non sono taggate mentre I portgroup delle TR VM: a di seconda come sono gli switch substitutes devi indicare o the vlan corrretta sui vmk0/vmk1o n the vlan dai portgroup delle VM... is not information switch sugli hai substitutes... the ISP had to prove

  Giuseppe

• Issue of CDP

  under the vSwitch, next to the NETWORK adapter card when I click on the icon so he revealed the news of Cisco Discovery Protocol, but it is all white? This could be because the CDP is disabled on the physical switch? I do not have access to the switch physical so I wonder... should it be activate? Thank you.

  If it's on LISTENING is ok, he is allowed to receive the CDP packets. Find this out to enable it on your swithces.

  http://KB.VMware.com/kb/1003885

  Marcelo Soares

  VMWare Certified Professional 310

  Technical Support Engineer

  Chief Executive Officer of the Linux server

• enumerate network device IDS

  with Vmware infrastructure client, I am able to enumerate the device id network via Cisco Discovery Protocol.

  is there a way to get the information which ESX host NIC is connected to which network id (physical switch)

  Have you had a glance at the COP get info via PowerShell ?

• Get info via PowerShell CDP

  Hello all together.

  I'm looking for something really special. I hope someone can help me solve this problem here.

  I want a script (powershell) that show me for each ESX host in a VC CDP (Cisco Discovery Protocol) of the vmnic information.

  Seems to be a very big problem to get to this. I already tried to get this information through the ESX host themselves. But it seems not the ESX hosts to retrieve this information but rather of the VC. Right now I am able to get the information on what vmnic CDP is enabled but not information such as Switchname, Switchport...

  You have any ideas for that? It would help me a lot! Thanks for helping!

  And here's one I made earlier...

  http://teckinfo.blogspot.com/2008/12/detailed-VMware-host-network.html

  
  Connect-VIServer MYVISERVER
  Write "Gathering VMHost objects"
  $vmhosts = Get-VMHost | Sort Name | Where-Object {$_.State -eq "Connected"} | Get-View
  $MyCol = @()
  foreach ($vmhost in $vmhosts){
   $ESXHost = $vmhost.Name
   Write "Collating information for $ESXHost"
   $networkSystem = Get-view $vmhost.ConfigManager.NetworkSystem
   foreach($pnic in $networkSystem.NetworkConfig.Pnic){
       $pnicInfo = $networkSystem.QueryNetworkHint($pnic.Device)
       foreach($Hint in $pnicInfo){
           $NetworkInfo = "" | select-Object Host, PNic, Speed, MAC, DeviceID, PortID, Observed, VLAN
           $NetworkInfo.Host = $vmhost.Name
           $NetworkInfo.PNic = $Hint.Device
           $NetworkInfo.DeviceID = $Hint.connectedSwitchPort.DevId
           $NetworkInfo.PortID = $Hint.connectedSwitchPort.PortId
           $record = 0
           Do{
               If ($Hint.Device -eq $vmhost.Config.Network.Pnic[$record].Device){
                   $NetworkInfo.Speed = $vmhost.Config.Network.Pnic[$record].LinkSpeed.SpeedMb
                   $NetworkInfo.MAC = $vmhost.Config.Network.Pnic[$record].Mac
               }
               $record ++
           }
           Until ($record -eq ($vmhost.Config.Network.Pnic.Length))
           foreach ($obs in $Hint.Subnet){
               $NetworkInfo.Observed += $obs.IpSubnet + " "
               Foreach ($VLAN in $obs.VlanId){
                   If ($VLAN -eq $null){
                   }
                   Else{
                       $strVLAN = $VLAN.ToString()
                       $NetworkInfo.VLAN += $strVLAN + " "
                   }
               }
           }
           $MyCol += $NetworkInfo
       }
   }
  }
  $Mycol | Sort Host, PNic
  

  If you found this information useful, please consider the allocation of points for correct or helpful.

  Alan Renouf

  VMware, Citrix, Microsoft Consultant

  UK

• Site-to-Site VPN breaks after reset of the router

  Hi all

  I have a very difficult problem.  I have a CallManager server on one site (Site A) configuration and IP phones which connect you via tunneling IPSec VPN site-to site to Site B.  WAN link to Site B (cable ISP with IP static) can be a tad bit reliable at times.  Everything worked perfectly, except when the router resets or loses connection at site B, smashing everything.  I have the option tftp 150 defined on the server CUCM on Site (192.168.10.250).  The tunnel is NOT upward automatically after a router loses connection, and once this is the case, it seems that I can't help that can restore full connectivity.  I know I must be missing something, but have no idea what.  The nbar-Discovery Protocol on the external interface of the router on the Site B shows TFTP and Skinny packets go out, but nothing back in.  I can't ping all internal resources on the Site A of Site B.  I'm doing a "isakmp crypto to show his" on each router and it shows the tunnel as being upward.  In order to back up the tunnel, I need to access the router on the Site A with the SDM tool and do a 'test' of the VPN tunnel.  It shows it as inactive, and when I have SDM generate traffic, using the source IP address as 192.168.10.1 (inside the interface of the router on the Site A) and destination IP of 192.168.11.1 (inside the interface of the router on the Site B), the tunnel back to the top.  Yet, even if the tunnel is restored, nothing works as much as to be able to ping site starting tftp from Site A to Site B and Site B.  Any help on this is GREATLY appreciated.  Any suggestions on how to configure a VPN site-to-site-reliable so that if cnnection is lost on one end, the tunnel back upward and devices on Site B can access resources such as on Site A CallManager server.  Thanks in advance!

  Hello

  One way you can have the tunnel come back automatically even if it breaks down is configure SLA monitoring on one of the routers of the site so that it sends periodic pings inside the IP address of the router on the other site. For example, on the Siite to configure it for SLA monitoring of IP than his inside source 192.168.10.1 and making ping inside the interface of Site B interface regularly, 192.168.11.1. Configuration guide, please see the below page:

  http://www.Cisco.com/en/us/docs/iOS/12_4/ip_sla/configuration/guide/hsicmp.html#wp1027188

  About traffic has not managed, pouvez you please paste the result of ' show cry isa his ', ' cry ipsec to show his ' and the configuration of the two routers if possible?

  Kind regards

  Assia

• Question about the use of Apple Remote Desktop on the Internet

  Hi all

  I used ARD for a few months with the local network.

  Recently, my parents (living in a different city) decided to get an iMac. And they would sometimes help me with the software and everything.

  So I set up a VPN connection between their house and mine, using OpenVPN and TunnelBlick for Mac OSX

  Here's how I plan to do works:

  1 / my parents begin the VPN connection from the iMac to my home networks. Using TunnelBlick, they can do it with just 1 click and it works OK

  3.8.5 2 / my laptop (Macbook Pro), ARC running, I try to look for "local area network", but ARD could not pick up my parents iMac.

  I thought that if my parents iMac connects to my home via VPN network, their iMac will be treated as a "local network" computer just like my Macbook Pro and they should be?

  Could you please let me know where I need to check and what should I look for to make it work?

  Thank you very much

  James

  I thought that if my parents iMac connects to my home via VPN network, their iMac will be treated as a "local network" computer just like my Macbook Pro and they should be?

  ... Yes and no.

  Yes, are vresque on the local network and can access resources on your home network. However, by default, and not without a lot of work, auto-discovery protocols (for example, Hello/zeroconf) do not reach over the VPN connection. It is, in part, because they use broadcast traffic, and the VPN does not pass broadcast traffic because it could overwhelm the WAN link.

  Instead, you must know the LAN IP address assigned to the VPN connection (you will find this in the VPN server log), and then enter your ARD to connect to this IP address. Then you'll be ready.