Feature | Benefit |
Ease of Use and Deployment | • Autoconfiguration of new stack units eliminates reconfiguration. • Dynamic Host Configuration Protocol (DHCP) autoconfiguration of multiple switches through a boot server eases switch deployment. • Automatic Cisco IOS Software version checking and updating help ensure that all stack members have the same software version. • Automatic
QoS (AutoQoS) simplifies QoS configuration in voice over IP (VoIP)
networks by issuing interface and global switch commands to detect Cisco
IP phones, classify traffic, and help enable egress queue
configuration. • Master
configuration management helps ensure that all switches are
automatically upgraded when the master switch receives a new software
version. • Autosensing
on each non-SFP port detects the speed of the attached device and
automatically configures the port for 10-, 100-, or 1000-Mbps operation,
easing switch deployment in mixed 10, 100, and 1000BASE-T environments. • Autonegotiating on all ports automatically selects half- or full-duplex transmission mode to optimize bandwidth. • Dynamic Trunking Protocol (DTP) facilitates dynamic trunk configuration across all switch ports. • Port Aggregation Protocol (PAgP) automates the creation of Cisco Fast EtherChannel ® groups or Gigabit EtherChannel groups to link to another switch, router, or server. • Link
Aggregation Control Protocol (LACP) allows the creation of Ethernet
channeling with devices that conform to IEEE 802.3ad. This feature is
similar to Cisco EtherChannel technology and PAgP. • DHCP Relay allows a DHCP relay agent to broadcast DHCP requests to the network DHCP server. • IEEE
802.3z-compliant 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, 1000BASE-T,
and CWDM physical-interface support through a field-replaceable SFP
module provides unprecedented flexibility in switch deployment. • There
is a default configuration to help ensure that the switch can be
quickly connected to the network and can pass traffic with minimal user
intervention. This default configuration exists even if there is no
configuration stored in Flash memory. • Automatic
media-dependent interface crossover (MDIX) automatically adjusts
transmit and receive pairs if an incorrect cable type (crossover or
straight-through) is installed. |
Cisco EnergyWise | • Cisco
EnergyWise for greenhouse gas emissions and operational cost
optimization by measuring, reporting, and reducing energy consumption
across the entire corporate infrastructure, well beyond the scope of IT. |
Availability and Scalability |
Superior Redundancy for Fault Backup | ● 1:N master redundancy allows each stack member to serve as a master, providing the highest reliability for forwarding. ● Cisco
CrossStack UplinkFast (CSUF) technology provides increased redundancy
and network resiliency through fast spanning-tree convergence (less than
2 seconds) across a switch stack with Cisco StackWise technology. ● Cross-Stack
EtherChannel provides the ability to configure Cisco EtherChannel
technology across different members of the stack for high resiliency. ● IEEE
802.1w Rapid Spanning Tree Protocol (RSTP) provides rapid spanning-tree
convergence independent of spanning-tree timers and also offers the
benefit of distributed processing. ● Stacked units behave as a single spanning-tree node. ● Per-VLAN
Rapid Spanning Tree (PVRST+) allows rapid spanning-tree reconvergence
on a per-VLAN spanning-tree basis, without requiring the implementation
of spanning-tree instances. ● Cisco Hot Standby Router Protocol (HSRP) is supported to create redundant, failsafe routing topologies. ● Unidirectional
Link Detection Protocol (UDLD) and Aggressive UDLD allow unidirectional
links caused by incorrect fiber-optic wiring or port faults to be
detected and disabled on fiber-optic interfaces. ● Switch-port autorecovery (errdisable) automatically attempts to reactivate a link that is disabled because of a network error. ● Cisco
RPS 2300 and RPS 675 Redundant Power Systems support provides superior
power-source redundancy for up to 6 Cisco networking devices, resulting
in improved fault tolerance and network uptime. ● Equal-cost routing for load balancing and redundancy. ● Bandwidth
aggregation up to 16 Gbps through 10 Gigabit EtherChannel technology, 8
Gbps through Gigabit EtherChannel technology, and up to 800 Mbps
through Fast EtherChannel technology enhances fault tolerance and offers
higher-speed aggregated bandwidth between switches and to routers and
individual servers. ● Uplink
bandwidth can be easily upgraded by adding a 10 Gigabit Ethernet
version to a wiring-closet stack and replacing the Gigabit Ethernet
uplinks with 10 Gigabit Ethernet without having to change fiber pairs. |
High-Performance IP Routing | ● Cisco Express Forwarding hardware routing architecture delivers extremely high-performance IP routing. ● Basic
IP unicast routing protocols (static, Routing Information Protocol
Version 1 [RIPv1], RIPv2 and RIPng) are supported for small-network
routing applications. ● IPv6 routing (OSPFv6 and EIGRPv6) support in hardware for maximum performance. The IP Services License is required. ● Advanced
IP unicast routing protocols (Open Shortest Path First [OSPF], Interior
Gateway Routing Protocol [IGRP], Enhanced IGRP [EIGRP], Border Gateway
Protocol Version 4 [BGPv4, IS-ISv4]) are supported for load balancing
and constructing scalable LANs. The IP Services image is required. ● Policy-based
routing (PBR) allows superior control by facilitating flow redirection
regardless of the routing protocol configured. The IP Services image is
required. ● HSRP provides dynamic load balancing and failover for routed links; up to 32 HSRP links supported per unit or stack. ● Inter-VLAN IP routing for full Layer 3 routing between 2 or more VLANs. ● Protocol
Independent Multicast (PIM) for IP multicast routing is supported,
including PIM sparse mode (PIM-SM), PIM dense mode (PIM-DM), and PIM
sparse-dense mode. The IP Services image is required. • Routing is possible across the stack. ● 128
switch virtual interfaces (SVIs) are recommended. Maximum of 1000 are
supported (depending on the number of routes and multicast entries). 468
routed ports are supported per stack. |
Integrated Cisco IOS Software Features for Bandwidth Optimization | ● Per-port
broadcast, multicast, and unicast storm control prevents faulty end
stations from degrading overall systems performance. ● IEEE
802.1d Spanning Tree Protocol support for redundant backbone
connections and loop-free networks simplifies network configuration and
improves fault tolerance. ● PVST+ allows for Layer 2 load sharing on redundant links to efficiently use the extra capacity inherent in a redundant design. ● IEEE
802.1s Multiple Spanning Tree Protocol allows a spanning-tree instance
per VLAN, for Layer 2 load sharing on redundant links. ● Equal-cost routing facilitates Layer 3 load balancing and redundancy across the stack. ● Local
Proxy Address Resolution Protocol (ARP) works in conjunction with
Private VLAN Edge to minimize broadcasts and maximize available
bandwidth. ● VLAN1 minimization allows VLAN1 to be disabled on any individual VLAN trunk link. ● VLAN
Trunking Protocol (VTP) pruning limits bandwidth consumption on VTP
trunks by flooding broadcast traffic only on trunk links required to
reach the destination devices. ● Internet
Group Management Protocol (IGMP) snooping provides fast client joins
and leaves of multicast streams and limits bandwidth-intensive video
traffic to only the requestors. ● Multicast
VLAN Registration (MVR) continuously sends multicast streams in a
multicast VLAN while isolating the streams from subscriber VLANs for
bandwidth and security reasons. ● Up to 48 EtherChannel groups are supported per stack. |
Scalable Stacking | ● Cisco
StackWise stacking creates a 32-Gbps switch interconnection. Stacking
does not require user ports. Up to 9 units can be stacked together for a
maximum of 468 10/100 ports, 468 10/100/1000 ports, 108 optical
aggregation ports, nine 10 Gigabit Ethernet ports, or any mix thereof.
Additional port combinations can be created by stacking together the
Cisco Catalyst 3750 Series Switches and the Cisco Catalyst 3750-E Series
Switches. |
QoS and Control |
Advanced QoS | ● Cross-stack QoS allows QoS to be configured across the entire stack. ● 802.1p
class of service (CoS) and differentiated services code point (DSCP)
field classification is provided, using marking and reclassification on a
per-packet basis by source and destination IP address, source and
destination MAC address, or Layer 4 Transmission Control Protocol/User
Datagram Protocol (TCP/UDP) port number. ● Cisco control-plane and data-plane QoS ACLs on all ports help ensure proper marking on a per-packet basis. ● 4 egress queues per port help enable differentiated management of up to 4 traffic types across the stack. ● Shaped
Round Robin (SRR) scheduling helps ensure differential prioritization
of packet flows by intelligently servicing the ingress queues and egress
queues. • Weighted Tail Drop (WTD) provides congestion avoidance at the ingress and egress queues before a disruption occurs. ● Strict priority queuing helps ensure that the highest-priority packets are serviced ahead of all other traffic. ● There is no performance penalty for highly granular QoS capability. |
Granular Rate Limiting | ● Cisco committed information rate (CIR) function provides bandwidth in increments as low as 8 Kbps. ● Rate
limiting is provided based on source and destination IP address, source
and destination MAC address, Layer 4 TCP/UDP information, or any
combination of these fields, using QoS ACLs (IP ACLs or MAC ACLs), class
maps, and policy maps. ● Asynchronous
data flows upstream and downstream from the end station or on the
uplink are easily managed using ingress policing and egress shaping. ● Up to 64 aggregate or individual policers are available per Fast Ethernet or Gigabit Ethernet port. |
Network Security |
Networkwide Security Features | ● IEEE 802.1x allows dynamic, port-based security, providing user authentication. ● IEEE 802.1x with VLAN assignment allows a dynamic VLAN assignment for a specific user regardless of where the user is connected. ● IEEE
802.1x with voice VLAN permits an IP phone to access the voice VLAN
irrespective of the authorized or unauthorized state of the port. ● IEEE
802.1x and port security are provided to authenticate the port and
manage network access for all MAC addresses, including that of the
client. ● IEEE
802.1x with an ACL assignment allows for specific identity-based
security policies regardless of where the user is connected. ● IEEE 802.1x with guest VLAN allows guests without 802.1x clients to have limited network access on the guest VLAN. ● Cisco security VLAN ACLs on all VLANs prevent unauthorized data flows from being bridged within VLANs. ● Cisco
standard and extended IP security router ACLs define security policies
on routed interfaces for control-plane and data-plane traffic. ● Port-based ACLs for Layer 2 interfaces allow security policies to be applied on individual switch ports. ● Secure
Shell (SSH) Protocol, Kerberos, and Simple Network Management Protocol
Version 3 (SNMPv3) provide network security by encrypting administrator
traffic during Telnet and SNMP sessions. SSH Protocol, Kerberos, and the
cryptographic version of SNMPv3 require a special cryptographic
software image because of U.S. export restrictions. ● Private
VLAN Edge provides security and isolation between switch ports, which
helps ensure that users cannot snoop on other users’ traffic. ● Dynamic
ARP Inspection helps ensure user integrity by preventing malicious
users from exploiting the insecure nature of the ARP protocol. ● DHCP
Snooping prevents malicious users from spoofing a DHCP server and
sending out bogus addresses. This feature is used by other primary
security features to prevent a number of other attacks such as ARP
poisoning. ● IP
source guard prevents a malicious user from spoofing or taking over
another user’s IP address by creating a binding table between client’s
IP and MAC address, port, and VLAN. ● Bidirectional
data support on the Switched Port Analyzer (SPAN) port allows a Cisco
Intrusion Detection System (IDS) to take action when an intruder is
detected. ● TACACS+
and RADIUS authentication facilitate centralized control of the switch
and restrict unauthorized users from altering the configuration. ● MAC address notification allows administrators to be notified of users added to or removed from the network. ● DHCP
Snooping helps administrators with consistent mapping of IP to MAC
addresses. This can be used to prevent attacks that attempt to poison
the DHCP binding database and to rate-limit the amount of DHCP traffic
that enters a switch port. ● Port security secures the access to an access or trunk port based on MAC address. ● After
a specific timeframe, the aging feature removes the MAC address from
the switch to allow another device to connect to the same port. ● Trusted
boundary provides the ability to trust the QoS priority settings if an
IP phone is present and to disable the trust setting in the event that
the IP phone is removed, thereby preventing a malicious user from
overriding prioritization policies in the network. ● Multilevel security on console access prevents unauthorized users from altering the switch configuration. ● The user-selectable address-learning mode simplifies configuration and enhances security. ● Bridge
protocol data unit (BPDU) guard shuts down Spanning Tree
PortFast-enabled interfaces when BPDUs are received to avoid accidental
topology loops. ● Spanning
Tree Root Guard (STRG) prevents edge devices not in the network
administrator’s control from becoming Spanning Tree Protocol root nodes. • IGMP
filtering provides multicast authentication by filtering out
nonsubscribers and limits the number of concurrent multicast streams
available per port. • Dynamic
VLAN assignment is supported through implementation of VLAN Membership
Policy Server client capability to provide flexibility in assigning
ports to VLANs. Dynamic VLAN facilitates the fast assignment of IP
addresses. • Cisco
CMS Software security wizards ease the deployment of security features
for restricting user access to a server as well as to a portion or all
of the network. ● 1000 access control entries (ACEs) are supported. |
Manageability |
Superior Manageability | • Cisco
IOS Software CLI support provides common user interface and command set
with all Cisco routers and Cisco Catalyst desktop switches. • Switching
Database Manager templates for access, routing, and VLAN deployment
allow the administrator to easily maximize memory allocation to the
desired features based on deployment-specific requirements. • VLAN
trunks can be created from any port, using either standards-based
802.1Q tagging or the Cisco Inter-Switch Link (ISL) VLAN architecture. • Up to 1005 VLANs per switch or stack and up to 128 spanning-tree instances per switch are supported. • 4000 VLAN IDs are supported. • Voice
VLAN simplifies telephony installations by keeping voice traffic on a
separate VLAN for easier administration and troubleshooting. • Cisco VLAN Trunking Protocol (VTP) supports dynamic VLANs and dynamic trunk configuration across all switches. • Cisco Group Management Protocol server functions allow a switch to serve as the Cisco Group Management Protocol router for client switches. • IGMP
snooping provides fast client joins and leaves of multicast streams and
limits bandwidth-intensive video traffic to only the requestors. • Remote
Switch Port Analyzer (RSPAN) allows administrators to remotely monitor
ports in a Layer 2 switch network from any other switch in the same
network. • For
enhanced traffic management, monitoring, and analysis, the Embedded
Remote Monitoring (RMON) software agent supports 4 RMON groups
(history, statistics, alarms, and events). • Layer 2 traceroute eases troubleshooting by identifying the physical path that a packet takes from source to destination. • All
9 RMON groups are supported through a SPAN port, which permits traffic
monitoring of a single port, a group of ports, or the entire stack from a
single network analyzer or RMON probe. • Domain Name System (DNS) provides IP-address resolution with user-defined device names. • Trivial
File Transfer Protocol (TFTP) reduces the cost of administering
software upgrades by downloading from a centralized location. • Network Timing Protocol (NTP) provides an accurate and consistent timestamp to all intranet switches. • Multifunction
LEDs per port for port status; half-duplex and full-duplex mode; and
10BASE-T, 100BASE-TX, and 1000BASE-T indication as well as switch-level
status LEDs for system, redundant-power supply, and bandwidth
utilization provide a comprehensive and convenient visual management
system. • SPAN works across all the ports in a stack. |
Cisco Network Assistant Software | ● Cisco Network Assistant Software provides an easy-to-use, Web-based management interface through a standard Web browser. ● Simplified port configuration via Cisco Smartports. ● Cisco
AVVID (Architecture for Voice, Video and Integrated Data) wizards need
just a few user inputs to automatically configure the switch to
optimally manage different types of traffic: voice, video, multicast,
and high-priority data. ● A security wizard is provided to restrict unauthorized access to applications, servers, and networks. ● Cisco
Network Assistant Software allows management of a small network of
Cisco Catalyst 3750-E, 3750, 3560-E, 3560, 3550, 2960, and 2950 Series
Switches through a single IP address, without the limitation of being
physically located in the same wiring closet. Full backward
compatibility helps ensure any combination of these switches can be
managed with a Cisco Catalyst 3750 Series Switch. ● Drag-and-Drop
Cisco IOS Software upgrade simplifies the process of upgrading Cisco
IOS Software by not involving a Trivial File Transfer Protocol (TFTP)
server. • The
software upgrade feature allows one-click software upgrade of multiple
switches in a community of Cisco Catalyst 3750-E, 3750, 3560-E, 3560,
3550, 2960, and 2950 Series Switches. Configuration cloning facilitates
rapid deployment of networks. The master switch automatically upgrades
each stack. ● Cisco
Network Assistant Software has been extended to include multilayer
feature configurations such as routing protocols, ACLs, and QoS
parameters. ● Cisco
clustering now supports member discovery and cluster creation across a
single Cisco Catalyst 3750 Series Switch routed hop, allowing the entire
LAN to be managed through a single Web interface (and with a single IP
address, if desired). ● Cisco
Network Assistant Software Guide Mode assists in the configuration of
powerful advanced features by providing step-by-step instructions. ● Cisco Network Assistant Software provides enhanced online help for context-sensitive assistance. ● The easy-to-use graphical interface provides both a topology map and front-panel view of the cluster and stacks. ● Multidevice
and multiport configuration capabilities allow administrators to save
time by configuring features across multiple switches and ports
simultaneously. ● Web-based management for a Cisco Aironet wireless access point is launched by clicking the relevant icon in the topology map. ● The
user-personalized interface allows modification of polling intervals,
table views, and other settings within Cisco CMS Software and retains
these settings. ● Alarm notification provides automated e-mail notification of network errors and alarm thresholds. |
Smartports | ● Simple macros help enable advanced QoS features with one command instead of multiple commands in the configuration file. |
Easy Web Setup | ● Web-browser setup utility allows one-click initialization for IP addresses and passwords. |
CiscoWorks Support | ● CiscoWorks
network-management software provides management capabilities on a
per-port and per-switch basis, providing a common management interface
for Cisco routers, switches, and hubs. Stacking is supported. ● SNMPv1,
v2c, and v3 and Telnet interface support delivers comprehensive in-band
management, and a CLI-based management console provides detailed
out-of-band management. ● Cisco Discovery Protocol versions 1 and 2 help enable a CiscoWorks network-management station for automatic switch discovery. ● The CiscoWorks 2000 LAN Management Solution provides support. |