User Guide

OmniAccess SafeGuard OS Administration Guide
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Chapter 2: Accessing and Managing the System
Understanding Mirroring and Monitoring Ports
The SafeGuard OS supports two types of mirroring:
■ port-based mirroring – Monitors all of the traffic on a port and copies, or mirrors,
the data to a destination port.
■ policy-based mirroring – Allows mirroring at the rule-level of a policy. Policy-
based mirroring is described in Configuring Policy-Based Mirroring on page 323.
Port-based mirroring is device dependant. The SafeGuard Switch supports multiple
mirroring sessions and the forwarding of mirrored frames to a remote port. Table 12
shows the differences between the devices.
As shown in Figure 3, the SafeGuard Switch supports:
■ A single mirroring port to a single mirrored-to port.
■ Multiple mirroring ports to a single mirrored-to port
■ Multiple mirroring ports to multiple mirrored-to ports
However, note that a single mirroring port cannot be connected to multiple mirrored-to
ports.
Figure 3 Example of Port-Based Mirroring Configuration for SafeGuard Switch
About Remote Span Support
The system can direct a mirrored frame to a specified remote monitoring device. This
device may not be another Alcatel-Lucent Switch. Frames are identified during VLAN
classification, tagged and directed to the RSPAN VLAN. The mirrored frames are
Table 12 Port-Based Mirroring on SafeGuard Devices
Device Mirror Sessions Remote Mirroring
SafeGuard Switch 1-4 Yes
SafeGuard Controller 1 No
CST_039
Mirroring
port
Mirrored-to
port
Mirrored-to
port
Mirrored-to
ports
Mirroring
ports
Mirroring
ports