Posts from category "2014"

VMware vSwitch - Cisco port-channeling configuration

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.

VMware disk consolidation alarm configuration

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...

Cisco IP phone recovery procedure

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:

IMAGE 1 - DHCP SETTINGS

- configure tftpd32 TFTP options per your environment and put your firmware files in same folder, like I did on mine:

IMAGE 2 - TFTP SETTINGS

- configure global options like this:

IMAGE 3 - GLOBAL OPTIONS SETTINGS

- on main window choose your LAN adapter as interface where you would listen for DHCP requests - IP shown in window should be your static assigned (ie 192.168.10.100)!:

IMAGE 4 - INTERFACE SETTINGS

- ALWAYS RUN THIS TFTPD32 SOFTWARE "AS ADMINISTRATOR..." ON YOUR WIN 7 OR WIN 8 MACHINE!!!;

- put your phone firmware files (extracted!) in corresponding folder - in this example it's on C:\TFTP;

- connect your PC with IP phone directly - put Ethernet cable in SW port on phone - not PC!; don't give power to phone yet;

- do standard hard reset procedure - holding the "#" key down on the keypad - apply power to the phone, phone is going throw some "light sequence", release "#" when typically handset blink non-stop red (or something similar), enter key sequence as noted above - 3491672850*#;

- observe throw tftpd32 log window how phone receives IP address from your pool and then downloads all required firmware files - let it finish that;

- phone should reset and be working now...

HTH...

P.S. I found one interesting thing recently - tried to upgrade 7906 phone with newer firmware (9.2.. something) but it was looping nonstop (blank screen, not booting etc)...then tried some older firmware (8.2...) first and phone accepted that older firmware without problem...after that phone accepted 9.2 firmware also! Interesting...