ESXi hosts SBS 2011, clients lose network via VPN

Greetings,

We have an ESXi Server (in a lab environment) who perform a SBS 2011 and a Windows 2003 (Terminal Server).

We have two locations, connected via a VPN IPSec (2 boxes of ClearOS).

The ESXi host is located in building r. customers in the construction of an experience no problem at all.

Customers in the building B often lose connectivity to network share. We also failed when copying data. Do not forget that the servers are located in the building and issues affecting only users in the B building.

We noticed the event ID 2012 on the VM SBS 2011 event viewer.

The two buildings are connected to a cable broadband 10 mb / 1 mb ISP.

NOD32 Antivirus is installed on the two virtual machines

Any help would be appreciated!

Thank you

Fred9777

Hello

There are a few things to look out for more such links. The following steps were made on W2K and W2K3, so that they are still applicable for you.

(1) is the VPN capable to manage the packet being sent by site B MTU size, sometimes the MTU on VPN size must be less than the default value of 1500 set LAN. You can check this scathing your server with a command like

ping f-l 1500

If you get a message like "packet needs to be fragmented but DF parameter.

You will need to reduce the size of the MTU TCP/IP in the client registry. Try to ping the server with a size of 500 bytes and see how it goes.

(2) setting the server TCP/IP stack

In the registry HKLM \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters, create or modify value DWORD of TcpMaxDataRetransmissions. By default, it is set to 5, but I recommend double this value to 10. The TcpMaxDataRetransmissions value is the number of retransmissions of TCP of a data segment without acknowledgement of receipt on an existing connection. TCP retransmits data segments until they are acknowledged or until the expiry of this value. Basically, when a client does not meet a package from the server, the server will attempt to retransmit the packet until TcpMaxDataRetransmissions many times. By increasing this value, you give the customer more time to answer on the server, which will help improve the flaky connections or connections with latency or higher than normal packet loss.

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\KeepAliveInterval and HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\KeepAliveTime.

Both entered DWORD.
KeepAliveInterval determines the interval between retransmissions keep until a response is received. If a response is received, the delay until the next keep alive transmission is again controlled by the value of KeepAliveTime.
The connection will be broken once the number of retransmissions specified by TcpMaxDataRetransmissions is remained. KeepAliveInterval is set by default at 1000, which is one second.
KeepAliveTime controls how many times TCP attempts to verify that an idle connection is still intact by sending a living package of the Dungeon. If the remote system is still reachable and running, he will acknowledge receipt of the living transmission to keep. KeepAliveTime is set by default to 7 200 000, or 2 hours.

I hope this helps.

Tags: VMware

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    authorization-server-group (outside LOCAL)

    Group Policy - by default-Home_VPN

    authorization required

    IPSec-attributes tunnel-group Home_VPN

    IKEv1 pre-shared-key *.

    type tunnel-group SSLClientProfile remote access

    tunnel-group SSLClientProfile webvpn-attributes

    enable SSLVPNClient group-alias

    tunnel-group type ClientLESS remote access

    tunnel-group kanazoé type remote access

    attributes global-tunnel-group kanazoé

    address VPN_POOL pool

    by default-group-policy kikou

    tunnel-group KaileY ipsec-attributes

    IKEv1 pre-shared-key *.

    by default-group Home_VPN tunnel-Group-map

    !

    !

    context of prompt hostname

    call-home

    Profile of CiscoTAC-1

    no active account

    http https://tools.cisco.com/its/service/oddce/services/DDCEService destination address

    email address of destination [email protected] / * /

    destination-mode http transport

    Subscribe to alert-group diagnosis

    Subscribe to alert-group environment

    Subscribe to alert-group monthly periodic inventory

    monthly periodicals to subscribe to alert-group configuration

    daily periodic subscribe to alert-group telemetry

    Cryptochecksum:438ed6084bb3dc956574b1ce83f52b86

    : end

    ASA5505 #.

    Here are the declarations of NAT for your first question:

    network object obj - 192.168.100.0

    255.255.255.0 subnet 192.168.100.0

    NAT (private, foreign) source static obj - 192.168.10.0 obj - 192.168.10.0 destination static obj - 192.168.50.0 obj - 192.168.50.0

    NAT (private, foreign) source static obj - 192.168.10.0 obj - 192.168.10.0 destination static obj - 192.168.100.0 obj - 192.168.100.0

    And 'clear xlate' after the above and that should fix your first question.

    I would check your second question and get back to you shortly.

  • Cannot print to a network via vpn printer

    Installed an EnGenius ESR750H router and configure the L2TP VPN server and Win 7 SP1 VPN client.   The client connects and implements the VPN.

    I can access the drives mapped to WHS v1 (Windows Home Server) and NAS (Network attached storage() and I can access the NAS login screen.

    I can't access screen for the old DLink DIR-655 Router now used as a WAP only [wireless access point] connection.

    I can't print the two printers on network at the office. LaserJets HP4000 & HP4050 with SNMP disabled in the configuration of printer Win7 - if on, they show offline.

    And I can't RDC (Remote Desktop connection) the ESM.

    A computer on the LAN Office can do anything, so everything works.

    Some time back, I have all work by the VPN ESR750H - all this - and I was so happy to finally access.  At that time there I had not yet removed on the WHS VPN configuration.

    Then the next day, a fool to UNRWA [the boss] decided to move things on a network segment and everything, including internet access, went to-well, you know where.  During the frenetic fray next I took the VPN of the WHS, but left the remote control to connect to.  More I have him help locate the bad wiring and bad switch causing the problem.

    I could not even get it all back to what I had it one evening.  There must be something stupid.

    The DRC to the WHS says the server error is not on, not available on the network, or is not remote connect lit, but the boss can rdc to the MSS on the local network.

    Printers and the DIR-655 all come with the same message of troubleshooting when I go to IP addresses through the browser with the connected VPN.

    (device) is detected and online but does not - does not not to connections on port 80, possibly firewall or do security policy issues - no problems with the firewall on my computer.

    I tried port forwarding 80 printing - no joy.

    Thanks in advance.

    Bob

    Hello Rafisher,

    Thanks for posting the question on the Microsoft Community.

    The question you posted would be better suited in TechNet community support. I suggest you to check with TechNet support to solve the problem.

    http://social.technet.Microsoft.com/forums/en-us/newThread

    I hope that helps you find the solution for your problem. If you have other problems with Windows in the future, please post in the Windows community. We would be happy to help you.

  • Cannot ping inner network via VPN site-2-site

    I have the following Setup of the site 2 site VPN.

    The pain I feel is host 172.168.88.3 in site A is not able to ping 172.168.200.3 in site B and vice versa. Think I've added static routes and lists ACLs correctly on 3560 switches (acting as an access point) and the two PIX to access internal networks. 172.168.9.3 host can ping 172.168.200.3 very well. All advice is appreciated.

    Thank you very much.

    My configs are as follows:

    PIX HAS

    8.0 (3) version PIX

    !

    PIX - A host name

    activate u18hqwudty78klk9s encrypted password

    names of

    !

    interface Ethernet0

    Speed 100

    full duplex

    nameif outside

    security-level 0

    IP address x.x.x.250 255.255.255.240

    !

    interface Ethernet1

    nameif inside

    security-level 100

    IP 172.168.9.1 255.255.255.0

    !

    uh78mklh78yMs encrypted passwd

    connection of the banner it is a private network. Unauthorized access is prohibited!

    Banner motd this is a private network. Unauthorized access is prohibited!

    passive FTP mode

    clock timezone GMT/UTC 0

    summer time clock GMT/BST recurring 1 Sun Mar 01:00 last Sun Oct 02:00

    DNS domain-lookup outside

    DNS server-group Ext_DNS

    Server name 82.72.6.57

    Server name 63.73.82.242

    the LOCAL_LAN object-group network

    object-network 172.168.9.0 255.255.255.0

    object-network 172.168.88.0 255.255.255.0

    Internet_Services tcp service object-group

    port-object eq www

    area of port-object eq

    EQ object of the https port

    port-object eq ftp

    EQ object of port 8080

    EQ port ssh object

    port-object eq telnet

    the WAN_Network object-group network

    object-network 172.168.200.0 255.255.255.0

    ACLOUT list extended access allowed object-group LOCAL_LAN udp any eq log field

    ACLOUT list extended access allow icmp object-group LOCAL_LAN no matter what paper

    ACLOUT list extended access permitted tcp object-group LOCAL_LAN connect to any object-group Internet_Services

    Access extensive list ip 172.168.88.0 ACLOUT allow 255.255.255.0 172.168.200.0 255.255.255.0 connect

    access-list extended ACLIN all permit icmp any what newspaper echo-reply

    access-list extended ACLIN all permit icmp any how inaccessible journal

    access-list extended ACLIN allowed icmp no matter what newspaper has exceeded the time

    IP 172.168.200.0 allow Access - list extended ACLIN 255.255.255.0 172.168.9.0 255.255.255.0 connect

    standard access list split_tunnel_list allow 172.168.9.0 255.255.255.0

    Access log list split_tunnel_list note LOCAL_LAN

    access-list extended SHEEP allowed ip object-group LOCAL_LAN 172.168.100.0 255.255.255.0 connect

    access extensive list ip 172.168.9.0 inside_nat0_outbound allow 255.255.255.0 172.168.200.0 255.255.255.0 connect

    access extensive list ip 172.168.9.0 outside_cryptomap_20 allow 255.255.255.0 172.168.200.0 255.255.255.0 connect

    pager lines 24

    Enable logging

    logging buffered information

    logging trap information

    host of logging inside the 172.168.88.3

    Outside 1500 MTU

    Within 1500 MTU

    IP local pool testvpn 172.168.100.1 - 192.168.100.99

    no failover

    ICMP unreachable rate-limit 1 burst-size 1

    ASDM image Flash: / pdm

    don't allow no asdm history

    ARP timeout 14400

    Global 1 interface (outside)

    NAT (inside) 0-list of access inside_nat0_outbound

    NAT (inside) 1 0.0.0.0 0.0.0.0

    Access-group ACLIN in interface outside

    ACLOUT access to the interface inside group

    Route outside 0.0.0.0 0.0.0.0 x.x.x.45 1

    Route inside 172.168.88.0 255.255.255.0 172.168.88.254 1

    Route inside 172.168.199.0 255.255.255.0 172.168.199.254 1

    Route outside 172.168.200.0 255.255.255.0 172.168.9.1 1

    Timeout xlate 03:00

    Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02

    Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00

    Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00

    Timeout, uauth 0:05:00 absolute

    dynamic-access-policy-registration DfltAccessPolicy

    Enable http server

    http 172.168.9.1 255.255.255.255 inside

    No snmp server location

    No snmp Server contact

    Server enable SNMP traps snmp authentication linkup, linkdown cold start

    Crypto ipsec transform-set esp-3des esp-md5-hmac Set_1

    Crypto ipsec transform-set ESP-AES-256-SHA 256 - aes - esp esp-sha-hmac

    Crypto dynamic-map outside_dyn_map 1 set of transformation-Set_1

    Crypto dynamic-map outside_dyn_map 1 the value reverse-road

    outside_map 1 card crypto ipsec-isakmp dynamic outside_dyn_map

    card crypto outside_map 20 match address outside_cryptomap_20

    card crypto outside_map 20 peers set x.x.x.253

    outside_map crypto 20 card value transform-set ESP-AES-256-SHA

    outside_map interface card crypto outside

    crypto ISAKMP allow outside

    crypto ISAKMP policy 1

    preshared authentication

    3des encryption

    md5 hash

    Group 2

    life 86400

    crypto ISAKMP policy 10

    preshared authentication

    aes-256 encryption

    sha hash

    Group 5

    life 86400

    No encryption isakmp nat-traversal

    Telnet 0.0.0.0 0.0.0.0 inside

    Telnet timeout 5

    SSH timeout 5

    Console timeout 0

    a basic threat threat detection

    Statistics-list of access threat detection

    NTP server 130.88.203.12 prefer external source

    internal testvpn group policy

    attributes of the strategy of group testvpn

    Split-tunnel-policy tunnelspecified

    value of Split-tunnel-network-list split_tunnel_list

    Viv ZdlkjGlOTGf7dqdb encrypted user name password

    type tunnel-group testvpn remote access

    tunnel-group testvpn General-attributes

    address testvpn pool

    Group Policy - by default-testvpn

    testvpn group of tunnel ipsec-attributes

    pre-shared-key *.

    tunnel-group x.x.x.253 type ipsec-l2l

    x.x.x.253 group of tunnel ipsec-attributes

    pre-shared-key *.

    !

    class-map inspection_default

    match default-inspection-traffic

    !

    !

    type of policy-card inspect dns preset_dns_map

    parameters

    message-length maximum 512

    Policy-map global_policy

    class inspection_default

    inspect the preset_dns_map dns

    inspect the ftp

    inspect h323 h225

    inspect the h323 ras

    inspect the rsh

    inspect the rtsp

    inspect esmtp

    inspect sqlnet

    inspect the skinny

    inspect sunrpc

    inspect xdmcp

    inspect the sip

    inspect the netbios

    inspect the tftp

    inspect the icmp

    !

    global service-policy global_policy

    context of prompt hostname

    Cryptochecksum:bb6ead3350227b3745c14b9ba340b84a

    : end

    B PIX

    8.0 (3) version PIX

    !

    hostname PIX - B

    enable password ul; encrypted jk89A89hNC0Ms

    names of

    !

    interface Ethernet0

    Speed 100

    full duplex

    nameif outside

    security-level 0

    IP address x.x.x.253 255.255.255.240

    !

    interface Ethernet1

    nameif inside

    security-level 100

    IP 172.168.200.1 255.255.255.0

    !

    interface Ethernet2

    Shutdown

    No nameif

    no level of security

    no ip address

    !

    2ljio897hFB.88fU encrypted passwd

    Banner motd this is a private network. Unauthorized access is prohibited!

    passive FTP mode

    DNS domain-lookup outside

    DNS server-group Ext_DNS

    Server name x.x.x.57

    Server name x.x.x.242

    the LOCAL_LAN object-group network

    object-network 172.168.200.0 255.255.255.0

    Internet_Services tcp service object-group

    port-object eq www

    area of port-object eq

    EQ object of the https port

    port-object eq ftp

    EQ object of port 8080

    the WAN_Network object-group network

    networks WAN Description

    object-network 172.168.88.0 255.255.255.0

    ACLOUT list extended access allowed object-group LOCAL_LAN udp any eq field

    ACLOUT list extended access allow icmp object-group LOCAL_LAN all

    ACLOUT list extended access permitted tcp object-group LOCAL_LAN any Internet_Services object-group

    access-list extended ACLIN allow all unreachable icmp

    access-list extended ACLIN permit icmp any one time exceed

    access-list extended ACLIN permit icmp any any echo response

    IP 172.168.88.0 allow Access - list extended ACLIN 255.255.255.0 172.168.200.0 255.255.255.0

    IP 172.168.9.0 allow Access - list extended ACLIN 255.255.255.0 172.168.200.0 255.255.255.0

    IP 172.168.199.0 allow Access - list extended ACLIN 255.255.255.0 172.168.200.0 255.255.255.0

    access extensive list ip 172.168.200.0 inside_nat0_outbound allow 255.255.255.0 172.168.9.0 255.255.255.0

    access extensive list ip 172.168.200.0 outside_cryptomap_20 allow 255.255.255.0 172.168.9.0 255.255.255.0

    pager lines 24

    Enable logging

    monitor debug logging

    debug logging in buffered memory

    logging trap information

    Outside 1500 MTU

    Within 1500 MTU

    no failover

    ICMP unreachable rate-limit 1 burst-size 1

    don't allow no asdm history

    ARP timeout 14400

    Global 1 interface (outside)

    NAT (inside) 0-list of access inside_nat0_outbound

    NAT (inside) 1 0.0.0.0 0.0.0.0

    Access-group ACLIN in interface outside

    ACLOUT access to the interface inside group

    Route outside 0.0.0.0 0.0.0.0 x.x.x.253 1

    Route outside 172.168.88.0 255.255.255.0 172.168.200.1 1

    Timeout xlate 03:00

    Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02

    Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00

    Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00

    Timeout, uauth 0:05:00 absolute

    dynamic-access-policy-registration DfltAccessPolicy

    No snmp server location

    No snmp Server contact

    Server enable SNMP traps snmp authentication linkup, linkdown cold start

    Crypto ipsec transform-set ESP-AES-256-SHA 256 - aes - esp esp-sha-hmac

    card crypto outside_map 20 match address outside_cryptomap_20

    card crypto outside_map 20 peers set x.x.x.250

    outside_map crypto 20 card value transform-set ESP-AES-256-SHA

    outside_map interface card crypto outside

    crypto ISAKMP allow outside

    crypto ISAKMP policy 10

    preshared authentication

    aes-256 encryption

    sha hash

    Group 5

    life 86400

    No encryption isakmp nat-traversal

    Telnet timeout 5

    SSH timeout 5

    Console timeout 0

    management-access inside

    a basic threat threat detection

    Statistics-list of access threat detection

    tunnel-group x.x.x.250 type ipsec-l2l

    x.x.x.250 Group of tunnel ipsec-attributes

    pre-shared-key *.

    !

    class-map inspection_default

    match default-inspection-traffic

    !

    !

    type of policy-card inspect dns preset_dns_map

    parameters

    message-length maximum 512

    Policy-map global_policy

    class inspection_default

    inspect the preset_dns_map dns

    inspect the ftp

    inspect h323 h225

    inspect the h323 ras

    inspect the rsh

    inspect the rtsp

    inspect esmtp

    inspect sqlnet

    inspect the skinny

    inspect sunrpc

    inspect xdmcp

    inspect the sip

    inspect the netbios

    inspect the tftp

    inspect the icmp

    !

    global service-policy global_policy

    context of prompt hostname

    Cryptochecksum:ccb8392ce529a21c071b85d9afcfdb30

    : end

    3560 G/W

    version 12.2

    no service button

    horodateurs service debug uptime

    Log service timestamps uptime

    no password encryption service

    !

    hostname 3560_GW

    !

    enable secret 5 $1$ cOB4$ Uklj8978/jgWv? TSSP

    !

    No aaa new-model

    mtu 1500 routing system

    IP subnet zero

    IP routing

    !

    !

    !

    !

    No file verify auto

    pvst spanning-tree mode

    spanning tree extend id-system

    !

    internal allocation policy of VLAN ascendant

    !

    interface GigabitEthernet0/1

    !

    interface GigabitEthernet0/2

    uplink Description to Cisco_ASA

    switchport access vlan 9

    !

    interface GigabitEthernet0/3

    !

    interface GigabitEthernet0/4

    !

    interface GigabitEthernet0/5

    !

    interface GigabitEthernet0/6

    !

    interface GigabitEthernet0/7

    !

    interface GigabitEthernet0/8

    !

    interface GigabitEthernet0/9

    !

    interface GigabitEthernet0/10

    !

    interface GigabitEthernet0/11

    !

    interface GigabitEthernet0/12

    !

    interface GigabitEthernet0/13

    !

    interface GigabitEthernet0/14

    !

    interface GigabitEthernet0/15

    !

    interface GigabitEthernet0/6

    !

    interface GigabitEthernet0/7

    !

    interface GigabitEthernet0/8

    !

    interface GigabitEthernet0/9

    !

    interface GigabitEthernet0/10

    !

    interface GigabitEthernet0/11

    !

    interface GigabitEthernet0/12

    !

    interface GigabitEthernet0/13

    !

    interface GigabitEthernet0/14

    !

    interface GigabitEthernet0/15

    !

    interface GigabitEthernet0/16

    !

    interface GigabitEthernet0/17

    !

    interface GigabitEthernet0/18

    !

    interface GigabitEthernet0/19

    !

    interface GigabitEthernet0/20

    !

    interface GigabitEthernet0/21

    !

    interface GigabitEthernet0/22

    !

    interface GigabitEthernet0/23

    switchport access vlan 88

    switchport mode access

    spanning tree portfast

    !

    interface GigabitEthernet0/24

    switchport access vlan 9

    switchport mode access

    spanning tree portfast

    !

    interface GigabitEthernet0/25

    trunk of the description and the port of A_2950_88 1

    switchport trunk encapsulation dot1q

    !

    interface GigabitEthernet0/26

    !

    interface GigabitEthernet0/27

    trunk of the description and the port of A_2950_112 1

    switchport trunk encapsulation dot1q

    Shutdown

    !

    interface GigabitEthernet0/28

    !

    interface Vlan1

    no ip address

    Shutdown

    !

    interface Vlan9

    IP 172.168.9.2 255.255.255.0

    !

    interface Vlan88

    IP 172.168.88.254 255.255.255.0

    !

    interface Vlan199

    IP 172.168.199.254 255.255.255.0

    !

    IP classless

    IP route 0.0.0.0 0.0.0.0 172.168.9.1

    IP route 172.168.88.0 255.255.255.0 172.168.9.1

    IP route 172.168.100.0 255.255.255.0 172.168.9.1

    IP route 172.168.200.0 255.255.255.0 172.168.9.1

    IP http server

    !

    !

    control plan

    !

    Banner motd ^ C is a private network. ^ C

    !

    Line con 0

    line vty 0 4

    opening of session

    line vty 5 15

    opening of session

    !

    end

    Hi Robert,.

    I went through the configuration on both the PIX firewall and see that trafficking is not defined for 172.168.88.0/24-->172.168.200.0/24.

    If you check the card crypto a PIX configuration, it says:

    address for correspondence outside_map 20 card crypto outside_cryptomap_20<--This acl="" defines="" interesting="">

    and the outside_cryptomap_20 of the acl says:

    access extensive list ip 172.168.9.0 outside_cryptomap_20 allow 255.255.255.0 172.168.200.0 255.255.255.0 connect

    Is the same on the PIX B:

    address for correspondence outside_map 20 card crypto outside_cryptomap_20

    access extensive list ip 172.168.200.0 outside_cryptomap_20 allow 255.255.255.0 172.168.9.0 255.255.255.0

    To allow users to talk to each other, apply to these commands:

    On the PIX:

    access extensive list ip 172.168.88.0 outside_cryptomap_20 allow 255.255.255.0 172.168.200.0 255.255.255.0

    access extensive list ip 172.168.88.0 inside_nat0_outbound allow 255.255.255.0 172.168.200.0 255.255.255.0

    and PIX B:

    IP 172.168.200.0 allow access-list extended outside_cryptomap_20 255.255.255.0 172.168.88.0 255.255.255.0

    access extensive list ip 172.168.200.0 inside_nat0_outbound allow 255.255.255.0 172.168.88.0 255.255.255.0

    Let me know if it helps.

    Thank you

    Vishnu Sharma

  • Unable to connect to esxi using the vsphere client

    Hello friends,

    I need a little help.

    a 2 5.0 esxi host and a vcenter than VM.

    My laboratory worked well for days, but all of a sudden do not know why I am not able to connect to ESXi hosts with vSphere Client.

    Error: The request failed because the remote server has taken too long to respond.

    Call "ServiceInstance.RetrieveContent" to "ServiceInstance' server '192.168.1.101' object failed.

    Yes, I am able to connect to vCenter server, when it is connected to vCenter and open the console of the virtual computer, nothing shows up, it's a black screen, as if the virtual machine is turned off. It is with all the virtual machines on both hosts.

    1. I thought that it might have to do something with vCenter and I tried connecting to Host individually which I wasn't able to.

    After completing a few KBs on vmware and some articles, I checked the status of the firewall on both hosts. (attached screenshot)

    8-7-2013 2-11-16 AM.png

    Checked if my computer can talk to esxi host on port 80, 443, 902. all ports are accessible.

    Disabled the Symantec endpoint protection and checked. no positive results.

    Finally, I tried the ESXi web navigation browser host http://ESXi-IP-address which redirects me to HTTPS connection with Certificate error, when I continue with the cert error, loading of the URL guard and the host page doesn't appear as it should.

    This questions are on both hosts. :-(

    You guys can point me in the right direction to solve this problem.

    Thank you.

    Finally things started working now.

    The problem was with the configuration of the workstation's NETWORK adapter.

    The link on the NETWORK adapter speed was set to Auto negotiate (default), but the speed was detected as 100 Mbps instead of 1 Gbps and MTU has been set at 9014 which I defined manually long back.

    Things use to operate in this configuration that I have configured hosts with MTU 9000 and cisco SMB switch default Jumbo.

    the LinkSpeed of 100 Mbps is bugging me, after changing to 1 Gbps (manual setting) the card NETWORK has deactivated, and it reminded me to switch!

    So I put the LinkSpeed Auto negotiation, MTU 9014, stop the two hosts, restart the switch. restarted my computer.

    Since it uses for things were in a normal state.

    Even the question of the console (black screen) disappeared. :-)

  • How to remove ESXi host of Distributed Switch

    3 Cluster DRS - 1 x physical, 2 nested nodes in a LAB environment

    I need to downgrade a 6.0 U2 ESXi host and replace it (from ESXi nested in Physics). I am trying to remove the host from a distributed switch, but it seems that I can't do that until I remove it from the Distributed Switch. I can't remove the VMkernel group management ports that prevents me to remove the host from the Distributed Switch. Any suggestions? I guess that I need that migrate to a Standard switch first?

    I am connected to the ESXi host through vSphere Client, migrated the group management to a Standard switch ports, then I was able to clear the host of the distributed switch. I could then remove the host from the Cluster.

  • ESXi host running 6 VCSA disconnected from the vCenter

    Hi guys,.

    I have a weird problem with my vCenter build 6. Single cluster of ESXi hosts. Running VCSA 6.0 and 6.0 ESXI. Making a storage of the vCenter vMotion initially got stuck at 77% and the ESXi host running the disconnected from vCenter vCenter. But I can connect directly to the ESXi host with vsphere client and see the vCenter VM works perfectly well. If I try to manually connect host ESXi and vCenter, I get the error "Failed to contact the host specified") both are in the same subnet and VLAN. I can migrate to other virtual machines without problem. I even restarted the host and yet I am not able to connect to vCenter. The host connects to vCenter if I reboot vCenter, but after a few minutes, disconnects again (even if no task does run on this topic.) I have no HA or DRS enabled at this point that I build this new environment and only presented a single LUN as a store of test data to the cluster.

    Any ideas?

    OK, I think I fixed that or have at least a work around. So the underlying question was hiding ID mode/CPU EVC. I'm under the cluster to a level of EVC to reduce until I have migrate workloads from old environment and I think that this created a problem for the unit vCenter. To resolve this problem, I turned off the unit, directly connected to the ESXi host that had the camera running, edited the virtual machine and reset the masking of CPUID. Also, I've hidden the flag NX/XD of the guest. It's temporary (I hope) as once I increase the EVC to the Haswell, I will expose the NX/XD comments and test. For the moment, it is of the workaround I did. It may be of some use to someone.

  • As part of the SAR cert is to have a NW separated between ESXi host required for VMotion or is it OK to use IP for VMotion management, in the execution of Certification tests.

    As part of the SAR cert is "have a NW/dedicated separate between hosts ESXi (on which we GOS) mandatory for VMotion or is - OK to use IP for VMotion management in the execution of Certification tests.»

    Note that the verification passed Test when you use management IP for Vmotion and without a dedicated connection to NW between ESXi hosts.

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