Cisco 3750G - Catalyst Integrated Wireless LAN Controller User Manual

28-3
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 28 Configuring SPAN and RSPAN
Understanding SPAN and RSPAN
Figure 28-2 Example of Local SPAN Configuration on a Switch Stack
Remote SPAN
RSPAN supports source ports, source VLANs, and destination ports on different switches (or different
switch stacks), enabling remote monitoring of multiple switches across your network. Figure 28-3 shows
source ports on Switch A and Switch B. The traffic for each RSPAN session is carried over a
user-specified RSPAN VLAN that is dedicated for that RSPAN session in all participating switches. The
RSPAN traffic from the source ports or VLANs is copied into the RSPAN VLAN and forwarded over
trunk ports carrying the RSPAN VLAN to a destination session monitoring the RSPAN VLAN. Each
RSPAN source switch must have either ports or VLANs as RSPAN sources. The destination is always a
physical port, as shown on Switch C in the figure.
Switch 1
1/0/4
2/0/15
Switch 2
Network
analyzer
Switch 3
Catalyst 3750 switch stack
86703
Stackwise
port
connections
Port 4 on switch 1 in the stack
mirrored on port 15 on switch 2
Port 4 on switch 1 in the stack
mirrored on port 15 on switch 2
Port 4 on switch 1 in the stack
mirrored on port 15 on switch 2

Cisco 3750G - Catalyst Integrated Wireless LAN Controller Specifications

General

Switching Capacity	32 Gbps
RAM	128 MB
Flash Memory	32 MB
Power Device	Internal power supply
Ports	48 x 10/100/1000 + 4 x SFP
Performance	38.7 Mpps
Wireless LAN Controller Capacity	50
Stacking	Yes
Features	VLAN support, QoS
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z
Operating Humidity	10% to 85% non-condensing
Power over Ethernet (PoE)	Yes (optional)