Rockwell Automation 1783-Mxxx Stratix 8000 and 8300 Ethernet Managed Switches User Manual - Manual (Page 83)

Rockwell Automation Publication 1783-UM003I-EN-P - March 2014 83
Switch Software Features Chapter 3
Types of Routing
Stratix 8300 switches can route packets by using these methods.
See the following manuals:
• For more information about routing features and how to modify them, see
the Cisco IE3000 Switch Software Configuration Manual, available from
http://www.Cisco.com .
• For information about using the CLI to configure routing, see the Cisco
IE3000 Switch Command-Line Interface Manual, available from
http://www.Cisco.com .
Table 4 - Routing
Feature Description
Static and connected routing See Static and Connected Routing on page 84 .
Dynamic routing Dynamic routing protocols are used by Layer 3 switches to dynamically calculate the best route for forwarding traffic. There are two
types of dynamic routing protocols:
• Distance-vector protocols
• Link-state protocols
Layer 3 switches using distance-vector protocols maintain routing tables with distance values of networked resources, and periodically
pass these tables to their neighbors. Distance-vector protocols use one or a series of metrics for calculating the best routes. These
protocols are easy to configure and use.
Distance-vector protocols supported by the switch are Routing Information Protocol (RIP), which uses a single distance metric (cost) to
determine the best path and Border Gateway Protocol (BGP), which adds a path vector mechanism. The switch also supports the Open
Shortest Path First (OSPF) link-state protocol and Enhanced IGRP (EIGRP), which adds some link-state routing features to traditional
Interior Gateway Routing Protocol (IGRP) to improve efficiency.
Routers using link-state protocols maintain a complex database of network topology, based on the exchange of link-state
advertisements (LSAs) between routers. LSAs are triggered by an event in the network, which speeds up the convergence time or time
required to respond to these changes. Link-state protocols respond quickly to topology changes, but require greater bandwidth and
more resources than distance-vector protocols
Unicast routing Unicast routing is used for all network processes where a private or unique resource is requested.
Multicast routing In multicast routing, routers create optimal distribution paths for data sent to a multicast destination address spanning tree in real-
time. Multicast routing protocols supported are PIM (SM, SM, SDM), DVMRP tunneling.
Redundant routing Redundant routing localizes the effects of route failures, and reduces control traffic overhead and route reconfiguration time by
providing a redundant network path. Redundant routing protocols supported are HSRP (Hot Standby Router Protocol) and CEF (Cisco
Express Forwarding).
IPv6 routing IPv6 network segments, also known as links or subnets, are connected by IPv6 routers, which are devices that pass IPv6 packets from
one network segment to another. EIGRP is the supported protocol.
VRF Lite Virtual Routing and Forwarding (VRF) lets multiple instances of a routing table to coexist within the same router at the same time.
Because the routing instances are independent, the same or overlapping IP addresses can be used without conflicting with each other.
The simplest form of VRF implementation is VRF Lite. In this implementation, each router within the network participates in the
virtual routing environment in a peer-based fashion.
IMPORTANT To enable routing in the Stratix 8300 switch, you must change the
SDM template from the default template:
• For static and connected routing, you can apply the Lanbase Routing
template and enable routing via the Device Manager Web interface.
• For other types of routing, you can apply SDM templates and enable
routing via the CLI.