Chapter 13
| Port Mirroring Commands
Local Port Mirroring Commands
– 334 –
both
- Mirror both received and transmitted packets.
vlan-id
- VLAN ID (Range: 1-4093)
mac-address
- MAC address in the form of xx-xx-xx-xx-xx-xx or
xxxxxxxxxxxx.
Default Setting
◆
No mirror session is defined.
◆
When enabled for an interface, default mirroring is for both received and
transmitted packets.
◆
When enabled for a VLAN or a MAC address, mirroring is restricted to received
packets.
Command Mode
Interface Configuration (Ethernet, destination port)
Command Usage
◆
You can mirror traffic from any source port or trunk to a destination port for
real-time analysis. You can then attach a logic analyzer or RMON probe to the
destination port and study the traffic crossing the source port or trunk in a
completely unobtrusive manner.
◆
Set the destination port by specifying an Ethernet interface with the
interface
configuration command, and then use the
port monitor
command to specify
the source of the traffic to mirror. Note that the destination port cannot be a
trunk or trunk member port.
◆
When mirroring traffic from a port or trunk, the mirror port/trunk and monitor
port speeds should match, otherwise traffic may be dropped from the monitor
port. When mirroring traffic from a VLAN, traffic may also be dropped under
heavy loads.
◆
When VLAN mirroring and port or trunk mirroring are both enabled, the target
port can receive a mirrored packet twice; once from the source mirror port or
trunk and again from the source mirror VLAN.
◆
When mirroring traffic from a MAC address, ingress traffic with the specified
source address entering any port in the switch, other than the target port, will
be mirrored to the destination port.
◆
When traffic matches the rules for both port mirroring, and for mirroring of
VLAN traffic or packets based on a MAC address, the matching packets will not
be sent to target port specified for port mirroring.
◆
Spanning Tree BPDU packets are not mirrored to the target port.
◆
You can create multiple mirror sessions, but all sessions must share the same
destination port.
Summary of Contents for EX-3524
Page 2: ......
Page 28: ...Figures 28 ...
Page 34: ...Section I Getting Started 34 ...
Page 58: ...Chapter 1 Initial Switch Configuration Setting the System Clock 58 ...
Page 72: ...Chapter 2 Using the Command Line Interface CLI Command Groups 72 ...
Page 156: ...Chapter 5 SNMP Commands Notification Log Commands 156 ...
Page 164: ...Chapter 6 Remote Monitoring Commands 164 ...
Page 218: ...Chapter 7 Authentication Commands Management IP Filter 218 ...
Page 268: ...Chapter 8 General Security Measures Port based Traffic Segmentation 268 ...
Page 292: ...Chapter 9 Access Control Lists ACL Information 292 ...
Page 312: ...Chapter 10 Interface Commands Power Savings 312 ...
Page 324: ...Chapter 11 Link Aggregation Commands Trunk Status Display Commands 324 ...
Page 366: ...Chapter 15 Address Table Commands 366 ...
Page 428: ...Chapter 17 VLAN Commands Configuring Voice VLANs 428 ...
Page 572: ...Chapter 25 IP Interface Commands IPv6 Interface 572 ...
Page 578: ...Section I Appendices 578 ...