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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Overview
Software Features
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SRR as the scheduling service for specifying the rate at which packets are dequeued to the
egress interface (shaping or sharing is supported on egress queues). Shaped egress queues are
guaranteed but limited to using a share of port bandwidth. Shared egress queues are also
guaranteed a configured share of bandwidth, but can use more than the guarantee if other queues
become empty and do not use their share of the bandwidth.
• Automatic quality of service (QoS) voice over IP (VoIP) enhancement for port -based trust of DSCP
and priority queuing for egress traffic
• IPv6 port-based trust with dual IPv4 and IPv6 SDM templates (not supported on switches running
the LAN Base feature set)
• Full QoS support for IPv6 traffic (not supported on switches running the LAN Base feature set)
Layer 3 Features
Note Unless otherwise indicated, features listed in this section are not supported on switches running the LAN
Base feature set. Some features noted are available only in the IP Services feature set.
• HSRP Version 1 (HSRPv1) and HSRP Version 2 (HSRPv2) 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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HSRP for IPv6 (requires the IP Base feature set)
–
Full OSPF (requires the IP Services feature set)
Starting with Cisco IOS Release 12.2(55)SE, the IP Base feature set supports OSPF for routed
access to enable customers to extend Layer 3 routing capabilities to the access or wiring closet.
–
Enhanced IGRP (EIGRP) (requires the IP Services feature set)
–
Border Gateway Protocol (BGP) Version 4 (requires the IP Services feature set)
• 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
• Multiple VPN routing/forwarding (multi-VRF) instances in customer edge devices to allow service
providers to support multiple virtual private networks (VPNs) and overlap IP addresses between
VPNs (requires the IP Services feature set)
• VRF Lite for configuring multiple private routing domains for network virtualization and virtual
private multicast networks
• Support for these IP Services, making them VRF aware so that they can operate on multiple routing
instances: HSRP, uRPF, ARP, SNMP, IP SLA, TFTP, FTP, syslog, traceroute, and ping
• Fallback bridging for forwarding non-IP traffic between two or more VLANs (requires the IP
Services feature set)
• Static IP routing for manually building a routing table of network path information. Starting with
Cisco IOS Release 12.2(58)SE, the LAN Base feature set also supports static IP routing on SVIs for
16 user-configured routes.
• Equal-cost routing for load-balancing and redundancy
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