Q-in-Q L2VPN Application over a 10 Gig Core Network
When service providers are looking to provide L2VPN service to their customers, Q-in-Q is an attractive option. Q-in-Q, also known as VLAN stacking, is a powerful, yet simple and cost-effective solution. MRV offers various switching platforms to address Q-in-Q service provisioning, as well as, high performance 10-Gig switching.
The OptiSwitch 9000 is a high-end optical aggregation switch with cutting edge intelligent L2 switching capability. With pluggable SFP interfaces, it's a perfect solution to provide a wide range of Gigabit fiber links for customer access to a provider's Metro network. With the OS9000's Q-in-Q functionality, customer packets are tunneled, unmodified through the provider's network using a provider configured 802.1Q VLAN tags.
MRV's MR Series wire-speed 10Gig switches make a perfect compliment to OS9000 optical aggregation switches. With pluggable Xenpak and XFP interfaces, 10Gig links varying in distances from 300m to 40km can provide a 10G backbone network over metropolitan area.
The OS9000 and MR 10Gig switches support IEEE 802.1s Multiple Spanning Tree Protocol (MSTP) and IEEE 802.1P Quality of Serves. By configuring VLANs and grouping VLANs into various MSTP instances, a redundant network that makes use of all available bandwidth can be provisioned. In MSTP, there are no blocked links waiting in stand-by. Using advanced ASIC technology, packets can be marked and classified using the 802.1P priority (VLAN tag priority) at wire-speed. Packets can receive the QoS determined by the service provider. Only the outer provider VLAN priority is used. Inner VLAN information is ignored and untouched while the packet is switched through the provider network.
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