Alcatel-Lucent OmniSwitch 6850-48 Cli Reference Manual page 2811

Port Mirroring and Monitoring Commands
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You cannot configure port mirroring and monitoring on the same switching ASIC on OmniSwitch
6850 Series and OmniSwitch 6855 Series switches. Each switching ASIC controls 24 ports (e.g., ports
1–24, 25–48, etc.). For example, if a port mirroring session is configured for ports 1/12 and 1/22, then
configuring a port monitoring session for any of the ports between 1 and 24 is not allowed.
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If a port mirroring session is configured across two switching ASICs, then configuring a monitoring
session is not allowed on any of the ports controlled by each of the ASICs involved. For example, if a
port mirroring session is configured for ports 1/8 and 1/30 on a 48-port switch, then configuring a port
monitoring session involving any of the ports between 1 and 48 is not allowed.
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Port mirroring is not supported on logical link aggregate ports however, it is supported on individual
ports that are members of a link aggregate.
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An "N-to-1" port mirroring session is configurable, where "N" can be a number from 1 to 24 (OS6855)
or 1 to 128 (OS6850). In other words, you can configure up to 24 or 128 source ports for a single desti-
nation port in a session.
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Once you execute the port mirroring source destination command to define the mirrored port and
enable port mirroring status, the port mirroring command must be used to enable the port mirroring
session.
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By default, the mirroring port is subject to Spanning Tree changes that could cause it to go into a
blocked state. To prevent this, specify the vlan_id number of the mirroring port that is to remain
unblocked when executing the command.
Usage Guidelines - Remote Port Mirroring
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Remote Port mirroring is supported only on OS6850 switches
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Use the rpmir-vlan parameter with this command to configure remote port mirroring.
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There must not be any physical loop present in the remote port mirroring VLAN.
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Spanning Tree must be disabled for the remote port mirroring VLAN.
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Source learning must be disabled or overridden on the ports belonging to the remote port mirroring
VLAN on intermediate and destination switches.
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On OS6850 switch the QoS redirect feature can be used to override source learning.
Examples
-> port mirroring 6 destination 6/4
-> port mirroring 6 source 2/3
-> port mirroring 6 destination 6/4
-> port mirroring 6 source 2/3-5 2/7 2/10
-> port mirroring 8 destination 1/12 rpmir-vlan 7
-> port mirroring 8 source 1/7 bidirectional
-> port mirroring 7 destination 6/4 unblocked 750
-> port mirroring 7 source 2/3
-> port mirroring 9 destination 1/24
-> port mirroring 9 source 1/23 inport
-> port mirroring 9 disable
-> port mirroring 8 no source 1/7
-> port mirroring 6 no source 2/10-12 2/14
OmniSwitch CLI Reference Guide June 2012 page 41-3