White Paper: Layer 3 Routing at the Network Edge

July 13, 2017 at 8:00 AM

 

Implementing Layer 3 at the edge of a LAN can have many benefits including increased network security, greater availability and improved network utilization, but it’s not always clear where Layer 3 routing should be used in the LAN. Traditionally, Layer 3 routers were at the core of the networks and acted as gateways to the Wide Area Network. As technology, pricing and availability have changed, Layer 3 routing has moved closer to the edge of the network. 

 

Our white paper discusses when to employ a Layer 3 switch at the edge of a network and gives definitions and applications for several widely used routing protocols including RIP, DVMRP, PIM and OSPF.

 

Topics covered in our Layer 3 white paper include:

 

Layer 2 Switching vs. Layer 3 Routing

 

Defining Layer 3 Routing Protocols

    -      Routing Information Protocol (RIP)

    -      Open Shortest Path First (OSPF)

    -      Internet Group Management Protocol (IGMP)

    -      Dstance Vector Multicast Routing Protocol (DVMRP)

    -      Protocol Independent Multicast (PIM)

    -      Virtual Router Redundancy Protocol (VRRP)

 

Layer 3 Routing Applications

    -      Assigning static IP routes to VLAN/Sublets

    -      Routing between Layer 2 VLAN

    -      Routing on high-speed uplinks to the core

    -      IP multicast routing with IGMP and DVMRP

    -      PIM-DM multicast routing in the LAN

    -      PIM-SM multicast routing protocol

    -      OSPF to route IP traffic through LAN into the core router

    -      VRRP in the LAN

 

Click here to read our Layer 3 Routing at the Network Edge white paper.

 

All our free white papers are available from our website by clicking here.

 

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