Cisco Catalyst 3750-X User Manual

32-2
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 32 Configuring SPAN and RSPAN
Understanding SPAN and RSPAN
These sections contain this conceptual information:
• Local SPAN, page 32-2
• Remote SPAN, page 32-3
• SPAN and RSPAN Concepts and Terminology, page 32-4
• SPAN and RSPAN Interaction with Other Features, page 32-9
• SPAN and RSPAN and Switch Stacks, page 32-10
Local SPAN
Local SPAN supports a SPAN session entirely within one switch; all source ports or source VLANs and
destination ports are in the same switch or switch stack. Local SPAN copies traffic from one or more
source ports in any VLAN or from one or more VLANs to a destination port for analysis. For example,
in Figure 32-1, all traffic on port 5 (the source port) is mirrored to port 10 (the destination port). A
network analyzer on port 10 receives all network traffic from port 5 without being physically attached
to
port 5.
Figure 32-1 Example of Local SPAN Configuration on a Single Switch
1 2 3 4 5 6 7 8 9 10 11 12
Port 5 traffic mirrored
on Port 10
3
2
1
4
5
67
8
9
11
12
10
Network analyzer
43580

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