LAG on PowerConnect

Notes:

LAG(Ling Agregation Group) adalah features utk kombine 2 atau lebih kabel/port utk bekerja sebagai satu group. Boleh pilih mode:
  1) failover(master mati, secondary ambil alih),
  2) LACP(Link Agregation Control Protocol)

Kalau nak guna LACP, both end kena suport dan enable dulu.

Untuk PowerConnect, boleh pilih utk enable atau tak pada menu:
   Switching --> Link Agregation -->  LAG Membership

Enable LACP on channel 1 and 2

Tapi ada kemungkinan pada remote port tak support LACP, maka setiap kali enable LACP, kena semak status LAG samaada up atau down di:
   Switching --> Porst --> LAG Configuration (ShowAll)

LAG Status pada Channel 2 Down

ref:
http://www.juniper.net/documentation/en_US/junos15.1/topics/concept/interfaces-lag-overview.html

esxcli

List ARP

- esxcli network ip neighbor list

SELinux

How SELinux Works

Consider these pieces of the SELinux puzzle:

• Subjects
• Objects
• Policy
• Mode

When a subject (such as an application) attempts to access an object (such as a file), the SELinux Security Server (inside the kernel) runs a check against the Policy Database. Depending on the current mode, if the SELinux Security Server grants permission, the subject is given access to the object. If the SELinux Security Server denies permission, a denied message is logged in /var/log/messages.

The Modes

SELinux has three modes (which can be set by the user). These modes will dictate how SELinux acts uponsubject request. The modes are: 

• Enforcing — SELinux policy is enforced and subjects will be denied or granted access to objects based on the SELinux policy rules
• Permissive — SELinux policy is not enforced and does not deny access, although denials are logged
• Disabled — SELinux is completely disabled
• 
  

ref:
http://www.linux.com/learn/docs/ldp/883671-an-introduction-to-selinux

contacts not sync with gmail contacts

Google Contacts Sync Adapter app installed?

Can be found in :
/system/GoogleContactsSyncAdapter/googleContactsSyncAdapter.apk









ref:
https://www.reddit.com/r/cyanogenmod/comments/3vxd58/google_sync_contacts_option_missing_in_cm13_on/