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Understanding Layer 3 Features on the QFabric System

The QFabric system supports the following Layer 3 features:

  • Static routes, which enable you to manually configure and enter routes directly into the routing table.

  • Routed VLAN Interfaces, which are a special type of Layer 3 virtual interface that enable you to forward packets between VLANs without using a router to connect the VLANs. Using this approach to connect VLANs reduces complexity and avoids the costs associated with purchasing, installing, managing, powering, and cooling another device.

  • Routing protocols for routing traffic. The following routing protocols are supported on QFabric systems:

    • Border Gateway Protocol (BGP), which is an exterior gateway protocol (EGP) for routing traffic between autonomous systems (ASs).

    • Open Shortest Path First (OSPF) protocol, which is an interior gateway protocol (IGP) for routing traffic within an autonomous system (AS). QFabric systems support OSPFv1 and OSPFv2.

    • When you configure routing protocols on the QFabric system, you must use interfaces from the Node devices assigned to the network Node group. If you try to configure routing protocols on interfaces from the Node devices assigned to server Node groups, the configuration commit operation fails.

    • You can configure routing protocols by including statements at the [edit protocols] hierarchy level. If you want to isolate customer traffic on your network, you can configure virtual router routing instances at the [edit routing-instances] hierarchy level, and configure routing protocols for each virtual router routing instance by including statements at the [edit routing-instances routing-instance-name protocols] hierarchy level.