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- Private_VLAN abstract "Private VLAN, also known as port isolation, is a technique in computer networking where a VLAN contains switch ports that are restricted such that they can only communicate with a given "uplink". The restricted ports are called "private ports". Each private VLAN typically contains many private ports, and a single uplink. The uplink will typically be a port (or link aggregation group) connected to a router, firewall, server, provider network, or similar central resource.The switch forwards all frames received on a private port out the uplink port, regardless of VLAN ID or destination MAC address. Frames received on an uplink port are forwarded in the normal way (i.e., to the port hosting the destination MAC address, or to all ports of the VLAN for unknown destinations or broadcast frames). Direct peer-to-peer traffic between peers on the switch is blocked. Any such communication must pass to the uplink and back. While private VLANs provide isolation between peers at the data link layer, communication at higher layers may still be possible. A typical application for a private VLAN is a hotel or Ethernet to the home network where each room or apartment has a port for Internet access. Similar port isolation is used in Ethernet-based ADSL DSLAMs. Allowing direct data link layer communication between customer nodes would expose the local network to various security attacks, such as ARP spoofing, as well as increasing the potential for damage due to misconfiguration.Another application of private VLANs is to simplify IP address assignment. Ports can be isolated from each other at the data link layer (for security, performance, or other reasons), while belonging to the same IP subnet. In such a case direct communication between the IP hosts on the protected ports is only possible through the uplink connection by using MAC-Forced Forwarding or a similar Proxy ARP based solution.".
- Private_VLAN thumbnail Private_VLAN_Traffic_Flow.jpg?width=300.
- Private_VLAN wikiPageExternalLink www.aristanetworks.com.
- Private_VLAN wikiPageExternalLink www.brocade.com.
- Private_VLAN wikiPageExternalLink www.cisco.com.
- Private_VLAN wikiPageExternalLink www.juniper.net.
- Private_VLAN wikiPageExternalLink www.marathon-networks.com.
- Private_VLAN wikiPageExternalLink www.microsoft.com.
- Private_VLAN wikiPageExternalLink distributed-switch.html.
- Private_VLAN wikiPageID "13225486".
- Private_VLAN wikiPageRevisionID "604177826".
- Private_VLAN hasPhotoCollection Private_VLAN.
- Private_VLAN subject Category:Local_area_networks.
- Private_VLAN subject Category:Network_architecture.
- Private_VLAN type Artifact100021939.
- Private_VLAN type ComputerNetwork103085333.
- Private_VLAN type Instrumentality103575240.
- Private_VLAN type LocalAreaNetwork103681477.
- Private_VLAN type LocalAreaNetworks.
- Private_VLAN type Network103820728.
- Private_VLAN type Object100002684.
- Private_VLAN type PhysicalEntity100001930.
- Private_VLAN type System104377057.
- Private_VLAN type Whole100003553.
- Private_VLAN comment "Private VLAN, also known as port isolation, is a technique in computer networking where a VLAN contains switch ports that are restricted such that they can only communicate with a given "uplink". The restricted ports are called "private ports". Each private VLAN typically contains many private ports, and a single uplink.".
- Private_VLAN label "Private VLAN".
- Private_VLAN label "VLAN privé".
- Private_VLAN sameAs VLAN_privé.
- Private_VLAN sameAs m.03bzft5.
- Private_VLAN sameAs Q3552974.
- Private_VLAN sameAs Q3552974.
- Private_VLAN sameAs Private_VLAN.
- Private_VLAN wasDerivedFrom Private_VLAN?oldid=604177826.
- Private_VLAN depiction Private_VLAN_Traffic_Flow.jpg.
- Private_VLAN isPrimaryTopicOf Private_VLAN.
