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Catalyst 3560 Switch Software Configuration Guide
78-16156-01
Chapter 1 Overview
Features
Layer 3 Features
Note Some features noted in this section are available only on the EMI.
• HSRP for Layer 3 router redundancy
• IP routing protocols for load balancing and for constructing scalable, routed backbones:
–
RIP versions 1 and 2
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OSPF (requires the EMI)
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Interior Gateway Routing Protocol (IGRP) and Enhanced IGRP (EIGRP) (requires the EMI)
–
Border Gateway Protocol (BGP) Version 4 (requires the EMI)
• IP routing between VLANs (inter-VLAN routing) for full Layer 3 routing between two or more
VLANs, allowing each VLAN to maintain its own autonomous data-link domain
• Policy-based routing (PBR) for configuring defined policies for traffic flows
• Fallback bridging for forwarding non-IP traffic between two or more VLANs (requires the EMI)
• Static IP routing for manually building a routing table of network path information
• Equal-cost routing for load balancing and redundancy
• Internet Control Message Protocol (ICMP) and ICMP Router Discovery Protocol (IRDP) for using
router advertisement and router solicitation messages to discover the addresses of routers on directly
attached subnets
• Protocol-Independent Multicast (PIM) for multicast routing within the network, allowing for
devices in the network to receive the multicast feed requested and for switches not participating in
the multicast to be pruned. Includes support for PIM sparse mode (PIM-SM), PIM dense mode
(PIM-DM), and PIM sparse-dense mode. (requires the EMI)
• Multicast Source Discovery Protocol (MSDP) for connecting multiple PIM-SM domains (requires
the EMI)
• Distance Vector Multicast Routing Protocol (DVMRP) tunnelling for interconnecting two
multicast-enabled networks across non-multicast networks (requires the EMI)
• DHCP relay for forwarding UDP broadcasts, including IP address requests, from DHCP clients
Power over Ethernet (PoE) Features
• Ability to provide power to connected Cisco pre-standard and IEEE 802.3af-compliant powered
devices from all 10/100 Ethernet ports if the switch senses that there is no power on the circuit
• 24-port PoE switch provides 15.4 W of power on each 10/100 port; 48-port PoE switch provides
15.4 W of power to any 24 of the 48 10/100 ports, or any combination of ports provide an average
of 7.7 W of power at the same time, up to a maximum switch power output of 370 W
• Automatic detection and power budgeting; the switch maintains a power budget, monitors and tracks
requests for power, and grants power only when it is available
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