Table 28: Compatibility mode enabled/disabled comparisons
Modules Compatibility mode enabled Compatibility mode disabled
v2 zl modules
only
Can insert zl module and the module will come
up. Any v2 zl modules are limited to the zl
configuration capacities.
v2 zl modules are at full capacity. zl modules
are not allowed to power up.
Mixed v2 zl
and zl
modules
Can insert zl module and the module will come
up. Any v2 zl modules are limited to the zl
configuration capacities. If compatibility mode is
disabled, the zl modules go down.
ZL modules are not allowed to power up.
zl modules
only
Same as exists already. If a v2 zl module is
inserted, it operates in the same mode as the zl
module, but with performance increases.
The Management Module is the only module
that powers up.
In Compatibility Mode, no v2 zl features are
allowed, whether the modules are all v2 zl or
not.
If Compatibility Mode is disabled and then
enabled, the startup config is erased and the
chassis reboots.
Traffic mirroring overview
Traffic mirroring (Intelligent Mirroring) allows you to mirror (send a copy of) network traffic received or transmitted
on a switch interface to a local or remote destination, such as a traffic analyzer or IDS.)
Traffic mirroring provides the following benefits:
• Allows you to monitor the traffic flow on specific source interfaces.
• Helps in analyzing and debugging problems in network operation resulting from a misbehaving network or an
individual client. The mirroring of selected traffic to an external device makes it easier to diagnose a network
problem from a centralized location in a topology spread across a campus.
Mirroring overview
Figure 64: Local and remote sessions showing mirroring terms on page 426 shows an example of the terms
used to describe the configuration of a sample local and remote mirroring session:
• In the local session, inbound traffic entering Switch A is monitored on port A2 and mirrored to a destination
(host), traffic analyzer 1, through exit port A15 on the switch.A local mirroring session means that the
monitored interface (A2) and exit port (A15) are on the same switch.
• In the remote session, inbound traffic entering Switch A is monitored on port A1. A mirrored copy of monitored
traffic is routed through the network to a remote mirroring endpoint: exit port B7 on Switch B. A destination
device, traffic analyzer 2, is connected to the remote exit port.A remote mirroring session means that:
Chapter 12 Monitoring and Analyzing Switch Operation 425
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