5508 controller Ethernet ports

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• Ethernet port on iMac 2013 does not connect

  iMac 2013 WiFi works, but slow (25 to 40 Mbps off potential 250 + Mbps. Somedays as fast as 179 Mbps wifi, but not lately) router misplacement slows me down and very hard to change the location of the router. Ethernet cable is good. Cable used to work with the iMac, but now it does not work. Not sure if hardware problem, or if the updates of the AOS has caused. Same cable works always with older macBook and iMac. 270 Mbps with the cable connected to the MacBook. A detailed visual inspection of the port does not bent pins. New looks.  Ports of the router has changed. Changing cables. Reset the router. You wonder if El Capitan or other updates might close port? How to re-enable?

  OS X El Capitan to 10.11.5

  iMac 21, 5 - uh 213

  Processor Intel Core i5 at 2.7 GHz

  8 GB 1600 MHz DDR3

  Broadcom 57766-A1:

  Name: ethernet

  Type: Ethernet Controller

  Bus: PCI

  Vendor ID: 0x14e4

  Device ID: 0 x 1686

  Subsystem Vendor ID: 0x14e4

  Subsystem ID: 0 x 1686

  Revision ID: 0x0001

  Width of the link: x 1

  BSD name: en0

  Kext name: AppleBCM5701Ethernet.kext

  Firmware version: 57766a - v1.13, 0x010e63c4

  Location: /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/AppleBCM570 1Ethernet.kext

  mDNS capable unloading: 68:5 b: 35:7e:f8: ff

  Version: 10.2.0

  In addition, Apple Support recognizes that they broke the Ethernet Ports and suggest that if we:

  "Kernel Extension Configuration Data incompatible Version 3.28.1" we can fix it by going to the command line entries.  However, this version is not on my computer. I have 3.28.2 since 29/02/16 and articles 3.30.1 06/04/16 and 17/04/16.

  They say on the following link:

  If the Ethernet on your Mac has stopped working recently - Apple supports

  If you can connect to Wi - Fi, follow these steps to update to version 3.28.2

  1. Open the activity monitor, located in the Utilities folder of the Applications folder.
  2. Select the CPU tab in the activity monitor, and then type "up-to-date" in the search field. The process of softwareupdated should now be the only listed element.
  3. Open the Terminal application, which is also in your Utilities folder.
  4. Enter this command in a Terminal to upgrade to the current version of the extension of the "Incompatible Kernel Extension Configuration Data" kernel:

     sudo softwareupdate --background

  5. Enter the admin of your OS X user account password when prompted.
  6. Switch to the activity monitor. When using the processor (CPU %) of the process softwareupdated is reset, the extension of the core must be updated.
  7. Select restart in the Apple menu to reboot your Mac.

  I prefer not to do that since I could break it's worse and I 3.28.2 and beyond.

• My Ethernet port is not running iMac mid 2011. Pls help me.

  Hi, I have an iMac 21.5 "mid-2011. My Ethernet port is not working. Is this a software problem? Pls help me.

  Try resetting the SMC reset management system (SCM) controller on your Mac - Apple Support

  Try another ethernet cable.

  He still does not? A report with the information more wrote an effective communities of Apple Support question

• Pavilion HP 11: ethernet port on hp pavilion 11 fried... solution... ?

  Hi all

  new to the forum here and decided to join because I have a little problem with my laptop...

  I did something stupid today. I tried to program a hitachi PLC with my laptop and accidentally hooked the ethernet cable to the port of evil on the controller (the port that would normally connect to a touchscreen / HMI) with the result that my port ethernet on my laptop got fried. After a few seconds smoke started coming on my laptop from under the keyboard so I quickly janked out cable ethernet. It's only there for a few seconds, but the damage was already done.

  On the good side of things: everything seems to work OK again. WiFi still works. Only problem is that this laptop has a single ethernet port and I really need this port.

  I took the cover but nothing obvious comes out. I know it's kind of a vague question to ask; but someone would have ideas on what could have broken and how to check what might be broken and what not?

  I'm not very familiar with computers is passing, so forgive my lack of knowledge.

  Thanks in advance

  A network card is not present, there is a wireless adapter.

  Ultrabooks like yours with RJ-45 ports do not have separate wired adapters that can be replaced.

  The NETWORK adapter is part of the motherboard and is not replaceable individually.

  Given that yours was smoked checked there may be some damage of traces on the motherboard.

  With the help of a mulitimeter won't help in any way. Even at big books in ancient times the NIC was part of the motherboard. A ultrabook is not a desktop computer. Motherboards same office have the network cards integrated into the chipset.

  Replacing a motherboard, this is how your network port fried will have to be resolved. Otherwise, to avoid the cost of replacing the motherboard, use the USB cable card NETWORK adapter.

  Under the guarantee, the induced lesions of the RJ-45 port owner is not covered. It's an excluded damage type.

• Re: Ethernet Port work is not on the P077TX Pavilion

  This is the driver you are looking for

  http://h10025.www1.HP.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-137996-1&cc=us&DLC=en&LC=en...

  The drivers are located at the following ADDRESS.

  http://support.HP.com/us-en/product/HP-Pavilion-15-notebook-PC-series/6936226/model/7280165/drivers

  Install the first chipset driver, the driver Intel IMEI then the Broadcom wifi card driver. Install the driver usb 3.0 from Intel.

  The features of error in right click Device Manager and select Properties.

  See the example below image. Provide the PCI\VEN string for each device that requires a driver.

  

  Vegeta007 wrote:

  Hello

  Now that I have installed the driver that you have suggested, the ethernet controller driver error seems to have disappeared from the Device Manager, but I'm still not able to connect through my ethernet port. Here is a picture of errors in Device Manager:

  

  Can you please tell me the drivers needed to correct these errors?

• 2602AP will not register with the 5508 controller

  Hello all-

  We have a 5508 controller that manages the HA to about 20 branches - each branch has its own subnet. We have a single branch (subnet) with new 2602 AP who will not register with the controller. All communications to that subnet appear normal and there is no ACL in place between the AP and the controller. The AP is able to resolve the IP address of the controller via DNS and start the registration process, but then timeout. We have installed 2602 AP successfully to other areas of the branch and they fit without any problems - it is a problem only in one branch. I have attached a few debug messages below for a single point of access (it's a production environment, so I analyzed useless info) and also included messages from the console to a different access point (the console AP messages are the same). There are currently 9 AP here and none of them will record this. Any ideas?

  Capwap debug events:

  * spamApTask0: 11 Dec 14:39:32.904: 44:2 b: 03:9 has: Discovery d1:10 request 10.29.9.190:44306

  * spamApTask0: 11 Dec 14:39:32.904: 44:2 b: 03:9 has: d1:10 join priority Processing status = 0, priority 1 of incoming Ap, MaxLrads = 300, joined Aps = 272

  * spamApTask0: 11 Dec 14:39:32.904: 44:2 b: 03:9's: Discovery d1:10 response to 10.29.9.190:44306

  * spamApTask0: 11 Dec 14:39:32.904: 44:2 b: 03:9's: Discovery d1:10 response to 10.29.9.190:44306

  * spamApTask0: 11 Dec 14:39:32.992: 44:2 b: 03:9 has: d1:10 DISCOVERY LWAPP APPLICATION received at 68:ef:bd:8e:48:6f on port "13"

  * spamApTask0: 14:39:32.992 Dec 11: Discovery 44:2 b request: 03:9 has: d1:10 elements in LWAPP of AP supporting CAPWAP

  * spamApTask0: 14:39:42.903 Dec 11: connection of DTLS 44:2 b: 03:9 has: d1:10 not found, creating new connection for 10:29:9:190 (44306) 10:5:13:4 (5246)

  * spamApTask0: 14:57:52.301 Dec 11: DTLS closed connection events receivedserver e8:ba:70:dc:d1:c0 (10:5:13:4 / 5246) client (10:29:9:190 / 44306)

  * spamApTask0: 11 Dec 14:57:52.301: e8:ba:70:dc:d1:c0 no entry there for AP (10:29:9:190 / 44306)

  * spamApTask0: 11 Dec 14:57:52.301: e8:ba:70:dc:d1:c0 entry no. AP exist in the temporary database for 10.29.9.190:44306

  * spamApTask0: 11 Dec 14:57:53.828: 44:2 b: 03:9 has: Discovery d1:10 request 10.29.9.190:44306

  * spamApTask0: 11 Dec 14:57:53.828: 44:2 b: 03:9 has: d1:10 join priority Processing status = 0, priority 1 of incoming Ap, MaxLrads = 300, joined Aps = 272

  * spamApTask0: 11 Dec 14:57:53.828: 44:2 b: 03:9's: Discovery d1:10 response to 10.29.9.190:44306

  * spamApTask0: 11 Dec 14:57:53.828: 44:2 b: 03:9's: Discovery d1:10 response to 10.29.9.190:44306

  * spamApTask0: 11 Dec 14:57:53.916: 44:2 b: 03:9 has: d1:10 DISCOVERY LWAPP APPLICATION received at 68:ef:bd:8e:48:6f on port "13"

  * spamApTask0: 14:57:53.916 Dec 11: Discovery 44:2 b request: 03:9 has: d1:10 elements in LWAPP of AP supporting CAPWAP

  * spamApTask0: 14:58:03.824 Dec 11: connection of DTLS 44:2 b: 03:9 has: d1:10 not found, creating new connection for 10:29:9:190 (44306) 10:5:13:4 (5246)

  Debug Capwap errors:

  * spamApTask0: 11 Dec 15:17:33.715: e8:ba:70:dc:d1:c0 abolition PT 10.29.9.190 which has not been surveyed

  * spamApTask0: 11 Dec 15:17:33.716: e8:ba:70:dc:d1:c0 DTLS connection has been closed

  Debug Capwap Details:

  * spamApTask0: 11 Dec 15:24:29.419: 44:2 b: 03:9 has: d1:10 CAPWAP control received Msg to 10.29.9.190:44306

  * spamApTask0: 11 Dec 15:24:35.542: 44:2 b: 03:9 has: d1:10 CAPWAP control received Msg to 10.29.9.190:44306

  * spamApTask0: 11 Dec 15:24:41.555: 44:2 b: 03:9 has: d1:10 CAPWAP control received Msg to 10.29.9.190:44306

  * spamApTask0: 11 Dec 15:24:49.555: 44:2 b: 03:9 has: d1:10 CAPWAP control received Msg to 10.29.9.190:44306

  * spamApTask0: 11 Dec 15:25:29.420: 44:2 b: 03:9 has: d1:10 CAPWAP control received Msg to 10.29.9.190:44306

  * spamApTask0: 15:25:29.420 Dec 11: connection of DTLS 44:2 b: 03:9's: d1:10 0x1a1703c8 closed by controller

  * spamApTask0: 15:25:29.421 Dec 11: msg closed connection CAPWAP DTLS

  Journal of the Console from the AP:

  Translate "CISCO-CAPWAP - CONTROLLER.ad.pps.k12.va.us"... the domain server (10.29.8.3)

  * 00:00:57.511 Mar 1: % 3-CAPWAP-ERRORLOG: did not get the server DHCP server log settings. [OK]

  * 00:01:10.511 Mar 1: % 3-CAPWAP-ERRORLOG: go join a capwap controller

  * 16:05:56.000 11 dec: % CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 10.5.13.4 peer_port: 5246

  * 16:06:17.495 11 dec: % CDP_PD-2-POWER_LOW: all disabled radios - NEGOTIATED WS-C3560E-24PD (68bc.0c03.8015)

  * 11 Dec 16:06:28.231: DTLS_CLIENT_ERROR:... /CAPWAP/base_capwap/DTLS/base_capwap_dtls_connection_db.c:2051 retransmission count Max reached!

  Kern of logging mechanism

  ^

  Invalid entry % detected at ' ^' marker.

  emergency logging trap

  ^

  Invalid entry % detected at ' ^' marker.

  Kern of logging mechanism

  ^

  Invalid entry % detected at ' ^' marker.

  emergency logging trap

  ^

  Invalid entry % detected at ' ^' marker.

  * 16:06:55.999 11 dec: % DTLS-5-SEND_ALERT: send FATAL: close notify alert at 10.5.13.4:5246

  * 16:06:55.999 3 dec: % CLIENTERRORLOG-3-LWAPP: LWAPP LED Init: incorrect led State 255

  * 16:07:06.367 11 dec: % 3-CAPWAP-ERRORLOG: go join a capwap controller

  * 16:07:07.000 11 dec: % CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 10.5.13.4 peer_port: 5246

  * 11 Dec 16:07:39.151: DTLS_CLIENT_ERROR:... /CAPWAP/base_capwap/DTLS/base_capwap_dtls_connection_db.c:2051 retransmission count Max reached!

  Kern of logging mechanism

  ^

  Invalid entry % detected at ' ^' marker.

  emergency logging trap

  ^

  Invalid entry % detected at ' ^' marker.

  Kern of logging mechanism

  ^

  Invalid entry % detected at ' ^' marker.

  emergency logging trap

  ^

  Invalid entry % detected at ' ^' marker.

  * 16:08:06.999 11 dec: % DTLS-5-SEND_ALERT: send FATAL: close notify alert at 10.5.13.4:5246

  * 16:08:06.999 11 dec: % CLIENTERRORLOG-3-LWAPP: LWAPP LED Init: incorrect led State 255

  * 16:08:17.367 11 dec: % 3-CAPWAP-ERRORLOG: go join a capwap controller

  * 16:08:17.000 11 dec: % CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 10.5.13.4 peer_port: 5246

  *Dec 17 15:53:47.463: %CAPWAP-3-ERRORLOG: Selected MWAR 'IRC-WLC-5508'(index 0).
  *Dec 17 15:53:47.463: %CAPWAP-3-ERRORLOG: Go join a capwap controller
  *Dec 17 15:53:47.000: %CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 10.5.13.4 peer_port: 5246
  *Dec 17 15:54:23.131: DTLS_CLIENT_ERROR: ../capwap/base_capwap/dtls/base_capwap_dtls_connection_db.c:2051 Max retransmission count reached!
  

  Get much better.

  WAP has selected the 5508 with good firmware.  WAP sends a JOIN request to 10.5.13.4 but cannot recover anything.

  Firewall?  Routing loop?

  What so-called "remote site", how is it connected to your office?  Dark fiber?  INTERNET SERVICE PROVIDER?

  You know what?  Can you post the output in the following commands:

  1 WAP: sh of stocks;

  2 WLC: sh sysinfo

  Nuts, I should already posed for these info before.

• Local AIR-CAP702W ethernet ports

  Hi all

  The new AIR-CAP702W AP have local Ethernet ports 10/100/1000Base-T 4.
  On the card, it is written "for wired devices connectivity.

  http://www.Cisco.com/c/en/us/products/collateral/wireless/Aironet-700-se...

  That's fine, but how manage the traffic on these ports?

  • Are we able to configure ports of theses in access with the different VLAN-ID mode?
    In this case the uplink of the AP must therefore in trunk mode.
    And where we configure the ports of the AP, on the WLC?
  • Or is traffic from connected devices in these ports encapsulated in the CAPWAP tunnel, as wireless data traffic and ends in the WLC (s)?
    In this case, we can choose which port is connected to this VLAN / SSID on the WLC?
  • Or maybe something else?

  Thank you for your help.
  Jerome

  The local 4 x 10/100/1000BASE-T Ethernet ports support half and full-duplex, auto-negotiation and MDI/MDIX autodetection. Devices that connect must support auto-negotiation if you connect to another mode, say hard configured speed and so on. The port cannot be activated, depending on the version of the code, for example 7.6.100.120 the first pressed the ports are not supported.

  For now, (until more control is added in the software) all LAN ports are switch locally, are mapped to the VLAN 702W and do not appear on the Wireless LAN Controller or AP.

  Initially, the ports are disabled and can be activated manually via CLI.

  This allows to reduce security risks. Here are the CLI commands to enable the ports.

  (Cisco Controller)> config ap lan <port id> <enable/disable> <AP-NAME>

  (Cisco Controller)> show ap lan <port id> <AP-NAME>

  (Cisco Controller)> show ap lan port-summary <AP-NAME>

  Hope that helps.

• migration of APs to the 5508 controller 4402

  Hello all,.

  We have two controllers (4402 and 5508) to one of the site.

  Customers of services at present.

  Both controllers have the same set of SSID but uses only a single group of AP.

  What would be the best means to move APs on 4402 to 5508?

  4402 services series years 1230 and 1240 AP. And looking at the note accompanying the WLC 7.6 code located on 5508,

  years 1240 only are supported. So, we will need to get the replacement of the years 1230.

  Someone suggested to go into every single years 1240 and change high availability for point to 5508 as primary and secondary 4402

  (just in case the AP don't is not the controller) 5508 Once this is done, I can add the AP in the access point default of the group to broadcase the same SSID.

  Is it enough for the task of migration?

  Also, what is the requirement of default design for the number of necessary uplinks?

  We have about 150 APs currently on 5508 that uses Group LAG of 1 4 uplinks.

  Regarding the 4402, it is service 60 APs with 1 2 uplinks.

  Thus with the APs on 4408 joining the 5508, 5508 serves about 210APs. 4 1 enough uplink is?

  What is the best practice recommended requirement of uplink AP?  APs on 5508 are 3602 s and 3702 s.

  Thank you in advance.

  P.S. BTW two controllers are part of the same mobility group

   Someone suggested going into every single 1240s and change the high availability to point to 5508 as primary and 4402 as secondary.(just in case the AP does not join the 5508 controller.) Once that is done, I can add the AP into the default AP group to broadcase the same SSIDs.Is that enough for migration task?

  Yes, it is sufficient. Unless 5508 have the same available on 4402 AP group name, all years 1240 migration goes into default-group & you may need to add to the good group of AP. It is advisable to have same AP group created between the controllers where AP configured for failover.

  Don't forget 1240 last took in charge in 8.0.x code. In order to better plan as well before moving on to 8.1 replacement code (expect less than 1-2 months of time). See below for more details compatibility matrix

  http://www.Cisco.com/c/en/us/TD/docs/wireless/compatibility/matrix/compatibility-matrix.html

   Also what is the default design requirement for the number of uplinks needed? We have about 150 APs currently on 5508 which uses LAG group of 4 1G uplinks.Thus with APs on 4408 joining the 5508, 5508 will roughly serve 210APs. is 4 1G uplink sufficient? 

  4G LAG is more that sufficient for 250 AP, I'm sure that together the traffic will be much less of 4G if monitor you the traffic volume of the art on this trunk links.

   What is the best practice recommended AP to uplink requirement? APs on 5508 are 3602s and 3702s.

  I guess that all of these AP connected to 1 Gbps switch compatible PoE ports +. If your binding rising intercommutation is 1 Gbit/s, which would be the bottleneck, WLC to SW LAG before becoming a bottleneck.

  HTH

  Rasika

  Pls note all useful responses *.

• 5508 controller & redundancy network/path

  I read in other threads that it is possible to use several Interfaces AP (disabled LAG) and have a port connected to a switch and the second trunk port connected to a second switch, with two switches in question connected with each other and running HSRP (our two 6500 hearts). My understanding on 5508 controller is very limited and I have just thrown into this, because it is a "high priority" project and is said today to sketch something for a meeting later, but if I connect it all together, it's then not create a loop? I guess my question is, is the data/network traffic through the 5508 in a trunk (port1) to another (port2) and I'll finish by fighting errors on my carrots, that data would be to pass a downlink of reference1 to port1 (for example), then again down port2 and on another soul?

  I read through the version 6 of the document as we speak, but it is not particularly clear on the delivery of the goods.

  Thank you!

  Alan

  Correct... you cannot divide ports if the WLC is configured for LAG.  For your use, with 6 AP, then Yes, I don't see why using a port connected to different switches will cause performance problems.  If it is a trial and you later decide that you will have 2 WLC, then connecto a swithc and develop WLC to the other switch and use LAG.

  Scott

• Problems to controller Ethernet Intel X 540 - AT2 constantly AutoDetect portspeed 1 GB

  I'll implement to 6U1 ESXi on three Supermicro SYS-6018R-WTRT servers that come with the NIC of the controller Ethernet Intel X 540 - AT2. Unfortunately, the auto-negocie port speed is changing between 1000 MB and 100 MB, apparently at random. sometimes two vmnic adapters are recognized as 1000 MB, sometimes it is 1000 MB and the other to 100 MB, sometimes both are 100 Mb. the switch (Extreme Networks Summit X 350-48t) works fine for the other servers, gbit, although the supermicro servers are one with 10 GB cards.

  ESXi is the last level of patch with additional IGB driver vib installed v4.1.11:

  [root@endor1:~] esxcli list vib software | grep IGB

  NET-IGB 4.1.1.1 - 1OEM.550.0.0.1331820 Intel VMwareCertified 2015-12-15

  When manually deactivation/activation of the switch port, dmesg on esxi says:

  (2015 12-17 T 14: 47:25.871Z cpu8:33247) < 6 > 0000:01:00.1 ixgbe: vmnic1: NIC link is

  (2015 12-17 T 14: 47:25.871Z cpu8:33247) < 3 > IGB: vmnic1: ixgbe_watchdog_link_is_down: NIC ANC link is

  (2015 12-17 T 14: 48:29.571Z cpu14:33243) < 6 > 0000:01:00.1 ixgbe: vmnic1: NIC link is up to 100 Mbps, flow control: RX/TX

  (2015 12-17 T 14: 48:29.571Z cpu14:33243) < 3 > IGB: vmnic1: ixgbe_watchdog_link_is_up: NIC ANC liaison is established

  (2015 12-17 T 14: 48:29.905Z cpu11:32854) NetPort: 1780: disabled port 0 x 2000005

  (2015 12-17 T 14: 48:29.905Z cpu11:32854) Uplink: 7316: enabled port 0 x 2000005 with mac 00:25:90:f9:75:f3

  any advice is much appreciated.

  the extreme Summit X 350-48 networks seems incompatible with 10GE cards. swapped the switch for an FSL 648 Brocade and everything works fine.

• Using the second ethernet port to connect to the printer?

  Hi I have a Mac Pro 2.1 old school and I'm wondering if I can connect to the network with an ethernet port and connect the latter to a printer?

  If so, how?

  Yosemite running.

  Thank you

  Physically, you use a port and a cable to connect to your network and use the second port and a second cable to connect directly to the printer. The printer must obviously have an interface Ethernet himself.

  However, you need to configure the second port on the Mac and the Ethernet port on the printer for each manually configured the TCP/IP addresses and these should be in a range of different network to your main network.

  If you the main network is something like 192.168.1.1 then your printer and the port on the Mac connection to this need to be in another network, such as 192.168.11.1.

  In theory, if the printer supports Hello aka. mDNS, then maybe you can get away with not having to configure TCP/IP addresses for the connection.

  The main reasons to use a second separate connection as this would be the performance or security, and frankly I don't think that's really relevant here. This would mean that no other computers on your network will be able to access the printer.

• How to extend the network and using the Ethernet port to connect an older computer without wifi capability

  I have a wireless network with my Time Capsule, but also I have an old computer without wifi capability. Is it possible to share the connection to this computer that connects an airport express (model A1264) to extend it and the computer thought that the ethernet port on the Airport express?

  Thank you.

  Yes

• Dynadock U3.0 - cannot use the Ethernet port after update 8.1 Win

  Hello world

  I use a u3.0 dock Dynadock with my Vaio PCS 13.
  I'm not able to use the Ethernet port on the Dynadock since I updated my Windows 8.1 device update 1.
  Before that everything worked well.

  I'm not able to re-install the drivers correctly (tried 7.6m0, 7.5m2). While the game driver tries to start, I get an error message, Setup is not able to put a bunch of registry (SYSTEM\CurrentControlSet\Services\DisplayLinkGA\D evice1) keys (up to 0). (Image 1)

  If I ignore these messages and do not install the driver, the Ethernet port will not installed in Device Manager. (Image 2)

  If I try to install the driver manually (DisplayLink network adapter NCM), I'll get an error message that a driver has been found but that access has been denied. (Image 3)
  I started the safe mode and could install the driver. But if I reboot in normal mode, the machine could not be started.

  I also tried to disable UAC and I am logged on as administrator 'real '.

  Please find the attached messaged (in German) error:

  [picture 1]: http://picload.org/image/lcalwop/toshiba.png
  [Picture 2]: http://picload.org/image/lcalwoc/toshiba2.png
  [Picture 3]: http://picload.org/image/lcalwlg/toshiba3.png

  BTW: If I unzip the Installer (7.6m0) and install * inf for the good Fri & dev (4503) it still does not work...

  I put t know what to do anymore...

  Hello

  After upgrade to 8.1 Windows, you should also update the software/driver Display Link
  This is very important!

  The latest version of the driver can be downloaded here:
  http://www.DisplayLink.com/support/downloads.php

  Note: the old version must be removed!

• my macbook pro 2015 lacks an ethernet port. How can I connect using ehternet?

  My macbook pro doesn't have an ethernet port. How can I connect my wifi is spotty, but the wire is good? Thank you!

  You will need an Ethernet to USB connection

  http://www.Apple.com/shop/product/MC704LL/A/Apple-USB-Ethernet-adapter

• Ethernet port disappears

  I'm on a MacBook Pro, end of 2013, El Capitan 10.11.3 running.

  Just today, I went to run a test using my Ethernet card rather than my wireless adapter and I couldn't connect.  I spent more than an hour to get to the next State:

  1. The operating system cannot see the Ethernet port.  If I run the system information report the Ethernet port is not listed.  Initially, I got the Ethernet port defined in my automatic position.  When I opened and went to advanced-> Hardware, I couldn't see my mac address and the configuration was virtually empty.
  2. After that a lot of research I restarted with the ethernet cable is connected and press command + r.  When the diagnosis came, I select Network Diagnostics.  There, I could see my card Ethernet, the mac address and the assigned IP address.  I disconnected the cable and saw the idle connection.  I reconnected it the cable and the returned connection active.
  3. I tried to reset the NVRAM using the Option + command + r + p, but without success.

  It is clear that the hardware is functional.

  How to restore the connection in the operating system?  I tried to add manually the ethernet card, but because the operating system does not see the adapter is not available to add manually to the location.

  I need help solving this problem.

  Hi George:

  Found this information. See if she can relate to you. http://9to5Mac.com/2016/02/28/Apple-confirms-OS-x-update-broke-Ethernet-port-on-some-Macs-heres-how-to-fix/

  Kim