Additional Routing and Switching Information
•	Integrated Management
•	Layer 2 Switching
•	IPv4/IPv6 Unicast Routing
•	IPv4/IPv6 Multicast Routing
•	Quality of Service
•	Virtual Router Redundancy
•	Virtual Routing and Switching
•	Spanning Tree Modules
•	BGP Route Reflector
•	Multi-protocol Label Switching
•	MPLS-TP
•	Virtual Private LAN Service
•	IPv6 Tunneling and Transition
•	Metro Ethernet Network
•	GMPLS Module
•	RSVP-TE Module
•	Precision Time Protocol
•	Data Center Bridging
•	TRILL
Videos
The Need for ZebOS Kunihiro Ishiguro

IP Infusion’s Virtual Private LAN Service (VPLS) supports multipoint-to-multipoint communication over an IP or Multi-Protocol Label Switched (MPLS) network. VPLS uses the MPLS Layer 2 Virtual Circuit (VC) as an underlying technology to provide a flexible and scalable multipoint-to-multipoint Layer 2 Virtual Private Network (VPN) solution.

ZebOS VPLS, in conjunction with an MPLS Layer 2 VC, allows multiple customer sites connected across an MPLS network to share a single bridged Ethernet domain. Therefore, all customer sites appear to be on the same Local Area Network (LAN), regardless of their geographical location. ZebOS VPLS encapsulates Ethernet frames from a customer site with a VPLS label and forwards the frames over an MPLS tunnel to the intended destination. The egress Provider Edge (PE) router removes the VPLS label and sends the Ethernet frame to the remote VPN site.

ZebOS VPLS enables support for hierarchical VPLS (H-VPLS) with a “hub and spoke” topology. H-VPLS increases scalability by establishing a tier model with a full mesh between core routers and spoke connections to access routers. This hub and spoke topology reduces signaling and packet replication between VPLS devices.

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Virtual Private LAN Services Diagram