Cisco Catalyst 3560-X Software Configuration Manual page 59

Chapter 1 Overview
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Power over Ethernet Features
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OL-25303-03
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 IP Services feature set).
Support for the SSM PIM protocol to optimize multicast applications, such as video.
Multicast Source Discovery Protocol (MSDP) for connecting multiple PIM-SM domains (requires
the IP Services feature set).
Distance Vector Multicast Routing Protocol (DVMRP) tunneling for interconnecting two
multicast-enabled networks across nonmulticast networks (requires the IP Services feature set).
DHCP relay for forwarding UDP broadcasts, including IP address requests, from DHCP clients.
DHCP for IPv6 relay, client, server address assignment and prefix delegation.
IPv6 unicast routing capability for forwarding IPv6 traffic through configured interfaces (requires
the IP Services feature set).
IPv6 default router preference (DRP) for improving the ability of a host to select an appropriate
router.
Support for EIGRP IPv6, which utilizes IPv6 transport, communicates with IPv6 peers, and
advertises IPv6 routes.
IP unicast reverse path forwarding (unicast RPF) for confirming source packet IP addresses.
Nonstop forwarding (NSF) awareness to enable the Layer 3 switch to continue forwarding packets
from an NSF-capable neighboring router when the primary route processor (RP) is failing and the
backup RP is taking over, or when the primary RP is manually reloaded for a nondisruptive software
upgrade (requires the IP Services feature set).
NSF-capable routing for OSPF and EIGRP that allows the switch to rebuild routing tables based on
information from NSF-aware and NSF-capable neighbors (only Catalyst 3750-X switches).
NSF IETF mode for OSPFv2—OSPFv2 graceful restart support for IPv4 (IP Services feature set
only).
NSF IETF mode for OSPFv3—OSPFv3 graceful restart support for IPv6 (IP Services feature set
only).
The ability to exclude a port in a VLAN from the SVI line-state up or down calculation.
Intermediate System-to-Intermediate System (IS-IS) routing supports dynamic routing protocols for
Connectionless Network Service (CLNS) networks.
Support for the Virtual Router Redundancy Protocol (VRRP) for IPv4, which dynamically assigns
responsibility for one or more virtual routers to the VRRP routers on a LAN, allowing multiple
routers on a multiaccess link to utilize the same virtual IP address (supported only on switches
running the IP Base or IP Services feature set).
Ability to provide power to connected Cisco pre-standard and IEEE 802.3af-compliant powered
devices from Power over Ethernet (PoE)-capable ports if the switch detects that there is no power
on the circuit.
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
Software Features
1-17