Alcatel-Lucent 6850-48 ネットワークガイド
Port Mirroring
Diagnosing Switch Problems
page 45-18
OmniSwitch AOS Release 6 Network Configuration Guide
September 2009
Creating a Mirroring Session
Before port mirroring can be used, it is necessary to create a port mirroring session. The
CLI command can be used to create a mirroring session between a mirrored (active)
port and a mirroring port. Two (2) port mirroring sessions are supported in a standalone switch or in a
stack consisting of two or more switches. In addition, “N-to-1” port mirroring is supported, where up to 24
(OmniSwitch 6400, 6800, and 6855) or 128 (OmniSwitch 6850 and 9000) source ports can be mirrored to
a single destination port.
stack consisting of two or more switches. In addition, “N-to-1” port mirroring is supported, where up to 24
(OmniSwitch 6400, 6800, and 6855) or 128 (OmniSwitch 6850 and 9000) source ports can be mirrored to
a single destination port.
Note. To prevent the mirroring (destination) port from being blocked due to Spanning Tree changes, be
sure to specify the VLAN ID number (from 1 to 4094) for the port that will remain unblocked (protected
from these changes while port mirroring is active). This parameter is optional; if it is not specified,
changes resulting from Spanning Tree could cause the port to become blocked (default). See Unblocking
Ports (Protection from Spanning Tree) below for details.
sure to specify the VLAN ID number (from 1 to 4094) for the port that will remain unblocked (protected
from these changes while port mirroring is active). This parameter is optional; if it is not specified,
changes resulting from Spanning Tree could cause the port to become blocked (default). See Unblocking
Ports (Protection from Spanning Tree) below for details.
To create a mirroring session, enter the port mirroring source destination
command and include the port
mirroring session ID number and the source and destination slot/ports, as shown in the following example:
-> port mirroring 6 source 2/3 destination 2/4
This command line specifies mirroring session 6, with the source (mirrored) port located in slot 2/port 3,
and the destination (mirroring) port located in slot 3/port 4.
and the destination (mirroring) port located in slot 3/port 4.
To create a remote port mirroring session, enter the port mirroring source destination
command and
include the port mirroring session ID number, the source and destination slot/ports, and the remote port
mirroring VLAN ID as shown in the following example:
mirroring VLAN ID as shown in the following example:
-> port mirroring 8 source 1/1 destination 1/2 rpmir-vlan 1000
This command line specifies remote port mirroring session 8, with the source (mirrored) port located on
slot 1/port 1, the destination (mirroring) port on slot 1/port 2, and the remote port mirroring VLAN 1000.
slot 1/port 1, the destination (mirroring) port on slot 1/port 2, and the remote port mirroring VLAN 1000.
Note. Neither the mirrored nor the mirroring ports can be a mobile port. See
for information on mobile ports.
Creating an “N-to-1” port mirroring session is supported, where up to 24 (OS6800) or 128 (OS6850/
OS9000) source ports can be mirrored to a single destination port. In the following example, port 1/2, 2/1,
and 2/3 are mirrored on destination port 2/4 in session 1:
OS9000) source ports can be mirrored to a single destination port. In the following example, port 1/2, 2/1,
and 2/3 are mirrored on destination port 2/4 in session 1:
-> port mirroring 1 source 1/2 destination 2/4
-> port mirroring 1 source 2/1 destination 2/4
-> port mirroring 1 source 2/3 destination 2/4
As an option, you can specify a range of source ports and/or multiple source ports. In the following exam-
ple, ports 1/2 through 1/6 are mirrored on destination port 2/4 in session 1:
ple, ports 1/2 through 1/6 are mirrored on destination port 2/4 in session 1:
-> port mirroring 1 source 1/2-6 destination 2/4
In the following example, ports 1/9, 2/7, and 3/5 are mirrored on destination port 2/4 in session 1:
-> port mirroring 1 source 1/9 2/7 3/5 destination 2/4