Switching Basics : Private VLANs
Today I am going to talk about “Private VLANs”. By using Private VLANs you can restrict the specific port from the network and it can only communicate with the uplink port with which it connects.
We have two kind of VLANs; One is Primary VLAN and other is Secondary VLANs. Primary VLANs is a type of VLAN which is used to forward frames downstream to all Secondary VLANs.while Secondary VLANs are further divided in to the 2 types and these types are :
Isolated VLANs :
As name suggested, it is isolated from all the port except the ports in the Primary VLAN or you can say the isolated VLAN port can only talk with the uplink port and will be isolated from the other ports in the network.
Community VLANs:
As name suggest. if two ports are in the community they can talk to each other and talk to the uplink port as well but not able to talk to the other members of the VLANs. They are restricted to have a communication with the isolated VLANs in the network.
 |
| Fig 1.1- Private VLANs |
Most common question what i am thinking now;
If two different Ports Continue reading
Cisco claims it can detect malware threats in encrypted traffic.
CENX recently snagged an NFV assurance deal with Verizon and joined ETSI's OSM project.