Extreme 3804 User Guide
76
Summit24e3 Switch Installation and User Guide
Configuring Ports on a Switch
NOTE
Frames that contain errors are not mirrored.
The mirrored port always transmits tagged frames. The default port tag will be added to any untagged
packets as they are mirrored. This allows you to mirror multiple ports or VLANs to a mirror port, while
preserving the ability of a single protocol analyzer to track and differentiate traffic within a broadcast
domain (VLAN) and across broadcast domains (for example, across VLANs when routing).
packets as they are mirrored. This allows you to mirror multiple ports or VLANs to a mirror port, while
preserving the ability of a single protocol analyzer to track and differentiate traffic within a broadcast
domain (VLAN) and across broadcast domains (for example, across VLANs when routing).
NOTE
For optimum performance, mirror three or fewer ports at any given time.
Port-Mirroring Commands
Switch port-mirroring commands are described in Table 21.
Port-Mirroring Example
The following example selects port 3 as the mirror port and sends all traffic coming into or out of the
switch on port 1 to the mirror port:
switch on port 1 to the mirror port:
enable mirroring to port 3 tagged
config mirroring add port 1
Extreme Discovery Protocol
The Extreme Discovery Protocol (EDP) is used to gather information about neighbor Extreme Networks
switches. EDP is used to by the switches to exchange topology information. Information communicated
using EDP includes:
switches. EDP is used to by the switches to exchange topology information. Information communicated
using EDP includes:
•
Switch MAC address (switch ID).
•
Switch software version information.
•
Switch IP address.
•
Switch VLAN-IP information.
•
Switch port number.
Table 21: Switch Port-Mirroring Configuration Commands
Command
Description
config mirroring add ports <portlist>
Adds a single mirroring filter definition. Up to
eight mirroring definitions can be added.
eight mirroring definitions can be added.
config mirroring delete ports <portlist>
Deletes a particular mirroring filter definition.
disable mirroring
Disables port-mirroring.
enable mirroring to <port> tagged
Dedicates a port to be the mirror output port.
show mirroring
Displays the port-mirroring configuration.