Cisco Catalyst 3750-X User Manual

1-31
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 1 Overview
Network Configuration Examples
Multidwelling Network Using Catalyst 3750-X Switches
A growing segment of residential and commercial customers are requiring high-speed access to Ethernet
metropolitan-area networks (MANs). Figure 1-11 shows a configuration for a Gigabit Ethernet MAN
ring using multilayer switch stacks as aggregati
on switches in the mini-point-of-presence (POP)
location. These switches are connected through 1000BASE-X SFP module ports.
The resident switches can be Catalyst 3750-X switches, providing customers with high-speed
con
nections to the MAN. The Catalyst 2950 LRE switch can also be used as a residential switch for
customers requiring connectivity through existing phone lines. The Catalyst 2950 LRE switch can then
connect to another residential switch or to a Catalyst 3750 aggregation switch. For more information
about the Catalyst Long-Reach Ethernet (LRE) switches, see the documentation sets specific to these
switches for LRE information.
All ports on the residential Catalyst 3750-X switches (and Catalyst 2950 LRE switches if they are
included) are conf
igured as IEEE 802.1Q trunks with protected port and STP root guard features
enabled. The protected port feature provides security and isolation between ports on the switch, ensuring
that subscribers cannot view packets destined for other subscribers. STP root guard prevents
unauthorized devices from becoming the STP root switch. All ports have IGMP snooping or CGMP
enabled for multicast traffic management. ACLs on the uplink ports to the aggregating Catalyst 3750
mu
ltilayer switches provide security and bandwidth management.
The aggregating switches and routers pro
vide services such as those described in the examples in the
“Small to Medium-Sized Network Using Catalyst 3
750-X and 3560-X Switches” section on page 1-26
and the “Large Network Using Catalyst 3750-X and
3560-X Switches” section on page 1-28.

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing