Features:
 
Hardware and Performance
6 open module slots design:
Up to 2 Management Modules 
Up to 4 Switch Modules
Hot-swappable switching modules
1 RJ45 serial console interface on Management Module for switch basic management and setup
 
Redundant Power System
3 power slots
100~240V AC and 36-72V DC power redundancy
Active-active redundant power failure protection
Backup of catastrophic power failure on one supply
 
IP Routing Features
IPv4 Routing protocol supports RIP v1/v2, OSPFv2 and BGP4
IPv6 Routing protocol supports RIPng, OSPFv3 and BGP4+
Routing interface provides VLAN routing mode 
Policy-based Routing (PBR) for IPv4
VRRP protocol for redundant routing deployment
Supports route redistribution 
 
Multicast Routing Features
Supports Multicast Routing Protocols:
PIM-DM (Protocol Independent Multicast - Dense Mode)
PIM-SM (Protocol Independent Multicast - Sparse Mode)
PIM-SSM (Protocol Independent Multicast - Source-Specific Multicast Mode)
Supports IGMP v1/v2/v3
 
Layer 2 Features
Supports VLAN
IEEE 802.1Q tag-based VLAN
Provider Bridging (VLAN Q-in-Q, IEEE 802.1ad) supported
GVRP for dynamic VLAN management
Private VLAN
Supports Link Aggregation
802.3ad Link Aggregation Control Protocol (LACP)
Cisco ether-channel (static trunk)
Supports Spanning Tree Protocol
STP, IEEE 802.1D (Classic Spanning Tree Protocol)
RSTP, IEEE 802.1w (Rapid Spanning Tree Protocol)
MSTP, IEEE 802.1s (Multiple Spanning Tree Protocol, spanning tree by VLAN)
Port mirroring to monitor the incoming or outgoing traffic on a particular port (many to 1)
Loop protection to avoid broadcast loops
Link Layer Discovery Protocol (LLDP)
Ethernet OAM 802.3ah/802.1ag/ITU-Y.1731
 
Quality of Service
Ingress shaper and egress rate limit per port bandwidth control
8 priority queues on all switch ports
IEEE 802.1p CoS/DSCP/Precedence
VLAN ID
Policy-based ingress and egress QoS
 
Multicast
Supports IPv4 IGMP snooping v1, v2 and v3
Supports IPv6 MLD snooping v1 and v2
Querier mode support
MVR (Multicast VLAN Registration)
 
Security
Authentication
IEEE 802.1x port-based network access authentication
Built-in RADIUS client to cooperate with the RADIUS servers
RADIUS/TACACS+ users access authentication
Access Control List
IP-based Access Control List (ACL)
MAC-based Access Control List (ACL)
Time-based ACL
DHCP Snooping to filter distrusted DHCP messages
Dynamic ARP Inspection discards ARP packets with invalid MAC address to IP address binding
IP Source Guard prevents IP spoofing attacks
 
Management
IPv4 and IPv6 dual stack management
Switch Management Interfaces
Console and Telnet Command Line Interface 
HTTP web switch management
SNMP v1 and v2c switch management
SSHv2, SSLv3, TLSv1.2 and SNMP v3 secure access
SNMP Management
Four RMON groups (history, statistics, alarms, and events) 
SNMP trap for interface Link Up and Link Down notification
Built-in Trivial File Transfer Protocol (TFTP) client
BOOTP and DHCP for IP address assignment
System Maintenance
Firmware upload/download via HTTP
Reset button for system reboot
Dual images
DHCP Functions:
DHCP Relay
DHCP Option 82
DHCP Server
User Privilege levels control
Network Time Protocol (NTP) and SNTP
Network Diagnostic
SFP-DDM (Digital Diagnostic Monitor)
ICMP remote IP ping
Syslog remote alarm
System Log
 
Stacking Management
Virtualized multiple CS-6306R switches integrated into one logical device
Single IP address stack management, supporting up to 2 hardware units stacked together
Stacking architecture supports redundancy Ring mode