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Zhoukangle
发帖数: 92
注册日期: ‎02-22-2011
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logical-systems routing instance logical-route之间的区别

请问,logical-systems ,routing instance, logical-route之间有什么区别吗?谢谢!

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上海光域通讯技术有限公司
发帖数: 2
注册日期: ‎10-15-2010
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回复: logical-systems routing instance logical-route之间的区别

logical-systems和routing instance的区别在于在logical-systems还能再建立routing instance。也可以这么说,一台路由器可以启用16个logical-systems,而这16个logical-systems就是相当于16台路由器,routing instance只是这些路由器下的某一进程,或者路由表。

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Zhoukangle
发帖数: 92
注册日期: ‎02-22-2011
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回复: logical-systems routing instance logical-route之间的区别

Thanks 2 L
Juniper Employee
tonyzhou
发帖数: 91
注册日期: ‎11-12-2010
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回复: logical-systems routing instance logical-route之间的区别

在juniper的设备中, routing instance是分很多种类的, 根据情况,需要进行配置的。

 

     * Forwarding--Use this routing instance type for filter-based forwarding
       applications. For this instance type, there is no one-to-one mapping
       between an interface and a routing instance. All interfaces belong to
       the default instance inet.0.
     * Layer 2 VPN--Use this routing instance type for Layer 2 VPN
       implementations.
     * Layer2-control--Use this routing instance type for RSTP or MSTP in
       customer edge interfaces of a VPLS routing instance. This instance
       type cannot be used if the customer edge interface is multihomed to
       two provider edge interfaces. If the customer edge interface is
       multihomed to two provider edge interfaces, use the default BPDU
       tunneling.
     * Nonforwarding--Use this routing instance type when a separation of
       routing table information is required. There is no corresponding
       forwarding table. All routes are installed into the default forwarding
       table. IS-IS instances are strictly nonforwarding instance types.
     * Virtual router--This routing instance is similar to a VPN routing and
       forwarding instance type, but used for non-VPN-related applications.
       There are no VRF import, VRF export, VRF target, or route
       distinguisher requirements for this instance type.
     * Virtual switch--(MX-series routers only) Use the virtual switch
       instance type to group one or more Layer 2 bridge domains. A bridge
       domain consists of a set of ports that share the same flooding or
       broadcast characteristics. Each virtual switch represents a Layer 2
       network. You can optionally configure a virtual switch to support
       Integrating Routing and Bridging (IRB), which facilitates simultaneous
       Layer 2 bridging and Layer 3 IP routing on the same interface. You can
       also configure Layer 2 control protocols to provide loop resolution.
       Protocols supported include the Spanning Tree Protocol, the Rapid
       Spanning Tree Protocol, and the Multiple Spanning Tree Protocol.
     * VPLS--Use this routing instance type for point-to-multipoint LAN
       implementations between a set of sites in a VPN.
     * VRF--Use this routing instance type for Layer 3 VPN implementations.
       For this instance type, there is a one-to-one mapping between an
       interface and a routing instance. Each VRF instance corresponds with a
       forwarding table. Routes on an interface go into the corresponding
       forwarding table.

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