Riverstone Networks WICT1-12 Specifikace stáhnout pdf (Strana 24)

2-4 Riverstone Networks RS 32000 Switch Router Getting Started Guide

Software Overview Introduction

Protocol-based VLANs – A protocol-based VLAN is a named set of ports that comprises an IP, IPX, AppleTalk,

DECNet, SNA, IPv6, or L2 broadcast domain. The RS confines protocol-specific broadcasts to the ports within the

protocol-based VLAN. Protocol-based VLANs sometimes are called subnet VLANs or layer-3 VLANs.

You can include the same port in more than one VLAN, even in both port-based and protocol-based VLANs.

Moreover, you can define VLANs that span across multiple routers. To simplify VLAN administration, the RS

supports 802.1Q trunk ports, which allow you to use a single port to “trunk” traffic from multiple VLANs to another

RS or to a switch that supports 802.1Q.

2.3.3 Routing

The RS 32000 provides wire-speed routing for the following protocols:

IP – protocol that switching and routing devices use for moving traffic within the Internet and within many corporate

intranets

IPX – protocol by Novell used in NetWare products

Note All other protocols that require routing must be tunneled using IP.

By default, the RS 32000 uses one MAC address for all interfaces. The RS 32000 can be configured to have a separate

MAC address for each IP interface and a separate MAC address for each IPX interface. When the RS receives a packet

whose destination MAC address is one of the router’s IP or IPX interface MAC addresses, the line card that received

the packet from the network uses information in the line card’s L3 lookup tables (or information supplied by the

Control Module) to route the packet to its IP destination(s). (See Section 2.4.7, "Control Module" for information

about the Control Module.)

You can add secondary IP addresses to the same IP interface, however, you can create only one IP and IPX interface

on a single port or VLAN. When you add an interface to a set of ports, you are adding a VLAN to those ports. Ports

that contain IP and IPX interfaces can still perform layer-2 bridging.

IP Routing

The RS 32000 supports the following IP unicast routing protocols:

• RIP v1 and RIP v2

• OSPF v2

• BGP 2,3,4

• IS-IS

IP interfaces do not use a specific routing protocol by default. When you configure an interface for routing, you also

specify the routing protocol that the interface will use.

IP Multicast Routing

The RS 32000 supports the following IP multicast routing protocols:

• IGMP

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Riverstone Networks WICT1-12 Specifikace Strana 24