PBB – Provider Backbone Bridges
Standardized as IEEE 802.1ah-2008, PBB allows customers to connect their Ethernet VLAN s across a service provider’s network, whilst keeping their own VLAN traffic separate from other customers of the service provider. As such, it is actually the service provider that needs to deploy a PBB capable network, which will take customer traffic and add an additional Ethernet header. The header contains information and identifiers which ensure that customer traffic will be sent to the correct egress point in the network and will also be kept separate from other customer traffic.
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