|
Configurations
- Cisco
Catalyst 3750G-24TS—24 Ethernet
10/100/1000 ports and 4 SFP uplinks
- Cisco
Catalyst 3750G-24T—24 Ethernet
10/100/1000 ports
- Cisco
Catalyst 3750G-12S—12 Gigabit
Ethernet SFP ports
- Cisco
Catalyst 3750-48TS—48 Ethernet
10/100 ports and 4 SFP uplinks
- Cisco
Catalyst 3750-24TS—24 Ethernet
10/100 ports and 2 small form-factor
pluggable (SFP) uplinks
Cisco Catalyst 3750 Series is available
in the Standard Multilayer Software Image
(SMI) or the Enhanced Multilayer Software
Image (EMI). The SMI feature set includes
advanced quality of service (QoS), rate-limiting,
access control lists (ACLs), and basic static
and routed information protocol (RIP) routing
functionality. The EMI provides a richer
set of enterprise-class features including
advanced hardware-based IP unicast and multicast
routing.
Cisco StackWise Technology—A New Standard
in Stackable Resiliency
Cisco StackWise technology is a premium
stacking architecture optimized for Gigabit
Ethernet. This technology is designed to
respond to additions, deletions, and redeployment
while maintaining constant performance.
Cisco StackWise technology unites up to
nine individual Cisco Catalyst 3750 switches
into a single logical unit, using special
stack interconnect cables and stacking software.
The stack behaves as a single switching
unit that is managed by a master switch
elected from one of the member switches.
The master switch automatically creates
and updates all the switching and optional
routing tables. A working stack can accept
new members or delete old ones without service
interruption.
Key Features and Benefits
Ease of Use—"Plug-and-Play" Configuration
A working stack is self-managing and self-configuring.
When switches are added or removed, the
master switch automatically updates all
the routing tables to reflect changes. Upgrades
are applied universally and simultaneously
to all members of the stack.
Scalability—Fast Ethernet to Gigabit
Ethernet
The Cisco Catalyst 3750 Series stacks up
to 9 switches as a single logical unit for
a total of 468 Ethernet 10/100 ports or
252 Ethernet 10/100/1000 ports. Individual
10/100 and 10/100/1000 units may be joined
in any combination to evolve with network
needs.
Mix-and-Match Switch Types—Pay as
You Expand Your Network
Stacks can be created with any combination
of Cisco Catalyst 3750 switches. Customers
who need a mixture of
10/100, 10/100/1000 ports and wiring closet
aggregation capability can incrementally
develop the access environment, paying only
for what they need.
Availability—Non-Stop Performance
at Layer 2 and Layer 3
The Cisco Catalyst 3750 Series increases
availability for stackable switches. Each
switch can operate both as master controller
and forwarding processor. Each switch in
the stack can serve as a master, creating
an 1:N availability scheme for network control.
In the unlikely event of a single unit failure,
all other units continue to forward traffic
and maintain operation.
Smart Multicast—A New Level of Efficiency
for Converged Networks
With Cisco StackWise technology, the Cisco
Catalyst 3750 Series offers greater efficiency
for multicast applications such as video.
Each data packet is put on to the backplane
only once, which provides more effective
support for more data streams.
Superior Quality of Service—Across
the Stack and at Wire Speed
The Cisco Catalyst 3750 Series offers Gigabit
Ethernet speed with intelligent services
that keep everything flowing smoothly—even
at ten times normal network speed. Industry-leading
mechanisms for marking, classification,
and scheduling deliver best-in-class performance
for data, voice, and video traffic—all
at wire speed.
Security—Granular Control for the
Access Environment
The Cisco Catalyst 3750 Series supports
a comprehensive set of security features
for connectivity and access control, including
ACLs, authentication, port-level security,
and identity-based network services with
802.1x and extensions.
Single IP Management—Many Switches,
One Address
Each Cisco Catalyst 3750 Series stack is
managed as a single object and has a single
IP address. Single IP management is supported
for activities such as fault detection,
virtual LAN creation and modification, security,
and QoS controls.
Jumbo Frames—Support for High-Demand
Applications
The Cisco Catalyst 3750 Series supports
jumbo frames on the 10/100/1000 configurations
for advanced data and video applications
requiring very large frames.
IPv6 Capable—Getting Ready For The
Future
The Catalyst 3750 supports IPv6 routing
in hardware for maximum performance. As
network devices grow and the need for
larger addressing and higher security become
necessary, the Catalyst 3750 will be ready
to meet the requirement.
Management Options
The Cisco Catalyst 3750 Series offers both
a superior command-line interface (CLI)
for detailed configuration and Cisco Cluster
Management Suite (CMS) Software, a Web-based
tool for quick configuration based on pre-set
templates. In addition, CiscoWorks supports
the Cisco Catalyst 3750 Series for network-wide
management.
Product Specifications
Table
1 Product Features and Benefits
| Feature |
Benefit |
|
Ease of use and deployment
|
- Auto-configuration
of new stack units eliminates
reconfiguration.
- Dynamic
Host Configuration Protocol
(DHCP) auto-configuration
of multiple switches through
a boot server eases switch
deployment.
- Automatic
Cisco IOS Software version
checking and updating helps
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 enable egress queue
configuration.
- Master
configuration management
ensures that all switches
are automatically upgraded
when the master switch receives
a new software version.
- Auto-sensing
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.
- Auto-negotiating
on all ports automatically
selects half- or full-duplex
transmission mode to optimize
bandwidth.
- Dynamic
Trunking Protocol (DTP)
enables 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.
- To
help ensure that the switch
can be quickly connected
to the network and can pass
traffic with minimal user
intervention, there is a
default configuration stored
in Flash.
- Auto-MDIX
(media-dependent interface
cross-over) automatically
adjusts transmit and receive
pairs if an incorrect cable
type (cross-over or straight-through)
is installed.
|
| Availability/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 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.
- Command-switch
redundancy enabled in Cisco
CMS Software allows designation
of a backup command switch
that takes over cluster
management functions if
the primary command switch
fails.
- UniDirectional
Link Detection (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 auto-recovery (errdisable)
automatically attempts to
re-enable a link that is
disabled due to a network
error.
- Cisco
Redundant Power System 675
(RPS 675) 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 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.
|
|
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],
and RIPv2) are supported
for small-network routing
applications.
- IPv6
routing support in hardware
for maximum performance
in the future.
- Advanced
IP unicast routing protocols
(Open Shortest Path First
[OSPF], Interior Gateway
Routing Protocol [IGRP],
Enhanced IGRP [EIGRP], and
Border Gateway Protocol
Version 4 [BGPv4]) are supported
for load balancing and constructing
scalable LANs. Enhanced
Multilayer Software Image
(EMI) is required.
- Policy-based
routing (PBR) allows superior
control by enabling flow
redirection regardless of
the routing protocol configured.
EMI is required.
- 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.
EMI is required.
- Distance
Vector Multicast Routing
Protocol (DVMRP) tunneling
interconnects 2 multicast-enabled
networks across non-multicast
networks. EMI is required.
- Fallback
bridging forwards non-IP
traffic between 2 or more
VLANs. EMI is required.
- Routing
is enabled across the stack.
- 1000
switch virtual interfaces
(SVIs) (depends on the number
of routes and multicast
entries) and 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.
- Web
Cache Communication Protocol
(WCCP) allows interaction
with a Web cache for the
purpose of redirecting content
requests and performing
basic load balancing across
multiple caches. EMI is
required.
- 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 utilize the
extra capacity inherent
in a redundant design.
- IEEE
802.1s Multiple Spanning
Tree Protocol (MSTP) allows
a spanning-tree instance
per VLAN, enabling Layer
2 load sharing on redundant
links.
- Equal-cost
routing for Layer 3 load
balancing and redundancy
across the stack. EMI is
required.
- 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 12 EtherChannel groups
are supported per stack.
|
|
Scalable stacking
|
- Cisco
StackWise stacking creates
a 32-Gbps backplane. Stacking
does not require user ports.
Up to 9 units can be stacked
together for a maximum of
468 10/100 ports, 252 10/100/1000
ports, 108 optical aggregation
ports, or any mix thereof.
|
| QoS/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 are provided,
using marking and reclassification
on a per-packet basis by
source and destination IP
address, source and destination
Media Access Control (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 ensure
proper marking on a per-packet
basis.
- 4
egress queues per port enable
differentiated management
of up to 4 traffic types
across the stack.
- Shaped
Round Robin (SRR) scheduling
ensures 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 guarantees
that the highest-priority
packets are serviced ahead
of all other traffic.
- There
is no performance penalty
for highly granular QoS
functionality.
|
|
Granular rate limiting
|
- Cisco
Committed Information Rate
(CIR) function guarantees
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.
|
| Security
|
|
|
Network-wide 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 (VACLs)
on all VLANs prevent unauthorized
data flows to be bridged
within VLANs.
- Cisco
standard and extended IP
security Router ACLs (RACLs)
define security policies
on routed interfaces for
control-plane and data-plane
traffic.
- Port-based
ACLs (PACLs) 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, Kerberos,
and the cryptographic version
of SNMPv3 require a special
cryptographic software image
due to 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.
- Bidirectional
data support on the Switched
Port Analyzer (SPAN) port
allows Cisco Secure Intrusion
Detection System (IDS) to
take action when an intruder
is detected.
- Terminal
Access Controller Access
Control System Plus (TACACS+)
and Remote Authentication
Dial-In User Service (RADIUS)
authentication enable 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.
- 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
Protocol 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 non-subscribers and
limits the number of concurrent
multicast streams available
per port.
- Dynamic
VLAN assignment is supported
through implementation of
VLAN Membership Policy Server
(VMPS) client functionality
to provide flexibility in
assigning ports to VLANs.
Dynamic VLAN enables 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 CLI support provides
common user interface and
command set with all Cisco
routers and Cisco Catalyst
desktop switches.
- Service
Assurance Agent support
facilitates service-level
management throughout the
LAN.
- Switching
Database Manager templates
for access, routing, and
VLAN deployment scenarios
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 1024 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
(CGMP) server functions
enable a switch to serve
as the CGMP router for CGMP
client switches. EMI is
required.
- 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 Services (DNS) provide
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 CMS Software
|
- Cisco
CMS Software provides an
easy-to-use, Web-based management
interface through a standard
Web browser.
- Cisco
AVVID (Architecture for
Voice, Video and Integrated
Data) wizards need just
a few user inputs to automatically
configure the switch to
optimally handle 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
CMS Software allows management
of up to 16 interconnected
Cisco Catalyst 3750, 3550,
2950, 2950 LRE, 3500 XL,
2900 XL, 2900 LRE XL, and
1900 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
the above switches can be
managed with a Cisco Catalyst
3750 Series switch.
- The
cluster software upgrade
feature allows one-click
software upgrade acr
| | |
