N E T V I R T E X P E R T

If you have problem connecting newest vDP 6.1.2 appliance with vsphere web client in following circumstances: - you are using vDS (Nexus 1kV also) - you migrate everything to standard vswitch and it works like it shoud - THEN please follow procedure from link below: http://www.virtuallypeculiar.com/2016/05/unable-to-connect-vdp-61-to-web-client.html Unable to connect to vCenter appliance with winSCP - please change SFTP environment protocol options in advanced settings to " shell /usr/lib64/ssh/sftp-server"  and enable SSH, Shell access in web Admin settings. It should work like charm...

    Useful cmd for quick checking compromised account in case of internal spam: cat /var/log/zimbra.log | sed -n 's/.*sasl_username=//p' | sort | uniq -c | sort -n Accont with much difference in sent mails is the one to inspect...

    These are install requirements that I personally use when I'm playing with lab/production Zimbra open source mail servers: - CentOS OS (minimal ISO) - base OS for Zimbra installation from  https://www.centos.org/download/ - 8GB+ RAM, 10GB+ HDD, 2+ vCPU Zimbra installation: DISABLE POSTFIX FROM BASE CENTOS INSTALL WHICH COMES BY DEFAULT -  systemctl stop postfix / systemctl remove postfix disable iptables firewall - assumes you have some other firewall at public side for your mail server set  selinux  adequately at  /etc/sysconfig/selinux setup local DNS adequately at  /etc/hosts -  you must resolve domain names which you are going to use in mail server so that system successfully works - even installer checks for resolvable hostname via DNS tar xzvf [zcsfilename.tgz] -  unpack previosly downloaded file from  https://www.zimbra.com/try/zimbra-collaboration-open-source/ cd [zcsfilename] ./install.sh -  begin installation...

Useful type of configurations in case of port-channel needs in VMware environments - these are 3 options for this:   Option I: - Select “Route based on IP hash” on the vSwitch - Configure Port channel on the Catalyst switches to bundle the links to the physical adapters.   Option II: - Select “Route based on source MAC hash” as the load balancing method on the vSwitch - Do not configure port channel on the Cisco Catalyst switches.   Option III: - If “Route based on the originating virtual switch port ID” is used on the vSwitch, do not team the Virtual Ethernet Adapters as Active/Active on the virtual servers - you may use as Active/Standby on the Virtual servers - Do not configure port channel on the Cisco Catalyst switches.

If you are using VDP in your environment you will probably from time to time see a need for disk consolidation on some of your VM's. It's not an problem but here is a quick setup how to define an alarm action on this type of problem with Email notification: - create new alarm in your datacenter with this settings: >>> Alarm name : something logical >>> Alarm type : Monitor for specific events occuring on this object... >>> Enable this alarm - checked >>>  Triggers tab - Add --> com.vmware.vc.VmDiskFailedToConsolidateEvent , status Warning >>> Actions tab - Send a notification email with settings for "From normal to warning" . Next time you will be notified on provided mails about disk consolidation needs...

If you have this kind of problem - phone won't boot, not showing anything on screen upon powering etc. - and you tried softreset (123456789*0#) and hard one (3491672850*#), then you should give this option a try...for this to work you would need: - tftpd32 software ( http://tftpd32.jounin.net/tftpd32_download.html ) - adequate firmware files for your 7900 phone ( www.cisco.com ) - local power adapter for IP phone - power cube 3,4 typically. You are going to use tftpd32 software for locally provision of firmware to IP phone and as a DHCP server for same phone with required option 150 in it. Required steps: - configure your PC with static IP address - some value from your test DHCP pool. If you are going to use, let's say, 192.168.10.0/24 pool, then you can give your PC - for example - 192.168.10.100/24, with default gateway also 192.168.10.100; - configure tftpd32 DHCP options as per picture: - configure tftpd32 TFTP options per your environment and put your firmware files in...

Having trouble working with classic Cisco IPsec VPN client in Windows 8/8.1 environment? This should help: - Uninstall completely existing VPN client SW - Download and run this tool: ftp://files.citrix.com/winfix.exe - Download and run this tool for 32-bit system: ftp://files.citrix.com/dneupdate.msi  and this one for 64-bit system: ftp://files.citrix.com/dneupdate64.msi - If needed restart system - Install Cisco VPN client SW again and run... It should be working fine now...