FD 100/320Gbps NT and FX NT IHub Services Guide Mirror Services
Issue: 13 3HH-11985-AAAA-TQZZA 613
Figure 35 Local Mirroring Example
8.3 Configuration Notes
This section describes mirroring configuration caveats.
• 1 mirroring service ID may be created within a single system.
• A mirrored source can only have one destination.
• The destination mirroring service IDs and service parameters are persistent
between router (re)boots and are included in the configuration saves.
The source packet mirroring enabling criteria defined in debug mirror-source
commands are not preserved in configuration saves.
• Physical layer problems such as collisions, jabbers, etc., are not mirrored.
Typically, only complete packets are mirrored. Complete stats are available on the
interface for these physical layer problems.
• Starting and shutting down mirroring:
• Mirror destinations:
The default state for a mirror destination service ID is shutdown. You must issue a
no shutdown command to enable the feature.
When a mirror destination service ID is shutdown, mirrored packets associated with
the service ID are not accepted from its mirror source. The associated mirror source
is put into an operationally down mode. Mirrored packets are not transmitted out of
the SAP. Each mirrored packet is silently discarded.
Issuing the shutdown command causes the mirror destination service or its mirror
source to be put into an administratively down state. Mirror destination service IDs
must be shut down first in order to delete a service ID or SAP association from the
system.
• Mirror sources:
The default state for a mirror source for a given mirror-dest service ID is no shutdown.
You must enter a shutdown command to deactivate (disable) mirroring from that
mirror-source.
Mirror sources do not need to be shutdown to remove them from the system. When
a mirror source is shutdown, mirroring is terminated for all sources defined locally for
the mirror destination service ID.
2/1/1 2/1/2 2/1/3
Sniffer
Configure a mirror service specifying
source and destination parameters
ALA-A
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