‘Uncategorized’ 分类存档

How to deploy xrv9k in vCenter if you have only qcow2 image?


At some times, we only have a qcow2 image, but ESXI(vCenter) only supports vmdk, how to do deploy? In the video guide, I will show how to convert img to vmdk from qcow2, then deploy by import exist hardware(vmdk).

Btw, xrv9k supports only 3 virtual interfaces: e1000, virtio, and VMXnet3. Please notices not support e1000e!


NSO For NFVO – 01



VNF(Virtual Network Function):是NFV(Network Function Virtualization)的一个组件,通过VNF,可以屏蔽硬件需求;可以通过VMs使用VNFs部署各种功能

VNFD(VNF Descriptor):描述VNF,在其中VDU(Virtual Decice Unit)将会被定义,等同于单个的VM;简单的VNFD会包含单个VDU,复杂的VNFD会包含多个VDUs;VDU包含vCPU,memory,storage,image,flavor,NIC ID mapping和NED type等;NVFD在ETSI SOL001(YAML)和SOL006(Yang)标准中定义




TigerVNC on ubuntu 20.0


Install Desktop Gnome

root@server-test:/opt# apt-get install -y ubuntu-desktop

Install/Config TigerVNC

root@server-test:/opt# apt -y install tigervnc-standalone-server
root@server-test:/opt# vncpasswd
Would you like to enter a view-only password (y/n)? n
root@server-test:~# more /root/.vnc/xstartup
# create new (or add to the end)
exec /usr/bin/gnome-session &
# start with diplay number [1], screen resolution [800x600]
root@server-test:~# vncserver :1 -geometry 800x600 -localhost no

New 'gcsprendpoint-yonzhao2test-share-flat2-ni9ngm-server-ne.novalocal:1 (root)' desktop at :1 on machine gcsprendpoint-yonzhao2test-share-flat2-ni9ngm-server-ne.novalocal

Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/gcsprendpoint-yonzhao2test-share-flat2-ni9ngm-server-ne.novalocal:1.log

Use xtigervncviewer -SecurityTypes VncAuth,TLSVnc -passwd /root/.vnc/passwd gcsprendpoint-yonzhao2test-share-flat2-ni9ngm-server-ne.novalocal:1 to connect to the VNC server.

Access by TigerVNC Client


2020-07-24 Update: Change to TightVNC

I found an issue that cannot input anything when login via tigerVNC, normal user is ok after disable screen auto clock, but root couldn’t login in. So I transfer to TightVNC that work perfect now. Follow install guide:

How to Install and Configure VNC on Ubuntu 20.04

Two issues for IxNetwork when set eBGP by Scenario


Ixia updates NexGen framework in IxNetwork, that is great function and help tester simplified workload, but looks like the function couldn’t completely automate,  e.g when you config local address, GW address couldn’t auto-generate, you must manually change that, that should ok, everybody should fix that~ 🙂  But some issue will waste your time to troubleshooting. Summary two issues for the article that will help you fast to fix similar issues.

My IxNetwork version is 7.40.929.28.GA, GA version, wish to fix those issues at MR version 🙂

MALFORM update error on NCS5500


Deploy OpenVPN on OpenWRT


My VPS(Bandwagon) include OpenVPN script, but only support Centos6.x that version not good for docker (my blog deploy by docker Blog顺利完成搬家之Bandwagonhost VPS), so need to do by other scripts. OpenWRT config OpenVPN client has some different, so summary the info to the article for review.

But due to GFW, OpenVPN couldn’t establish at last, reset happened between server and client, but the setup should workable.

Deploy OpenVPN at Server

Don’t know why couldn’t find OpenVPN pacakage by yum, even if have epel source

[root@frank ~]# rpm -qa |grep epel
[root@frank ~]# yum install openvpn
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base:
 * extras:
 * updates:
No package openvpn available.
Error: Nothing to do


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