HP ProCurve 1600M, Management And Configuration Manual

Page: 541 / 690

Monitoring and Analyzing Switch Operation
Traffic Mirroring
N o t e s
Booting from Software Versions Earlier than K.12. xx : If it is necessary
to boot the switch from a legacy (pre-K.12.xx) software version after using
version K.12.
xx or greater to configure mirroring, remove mirroring from the
configuration before booting with the earlier software.
Maximum Supported Frame Size: The IPv4 encapsulation of mirrored
traffic adds a 54-byte header to each mirrored frame. If a resulting frame
exceeds the MTU (Maximum Transmission Unit) allowed in the path from the
mirroring source to the mirroring destination, the frame is dropped. For more
information, refer to “Maximum Supported Frame Size” on page B-68.
No Frame Truncation: Mirroring does not truncate frames, and oversized
mirroring frames will be dropped. Also, remote mirroring does not allow
downstream devices in a mirroring path to fragment mirrored frames.
Using the Menu or Web Interface To Configure Local
Mirroring
Menu and Web Interface Limits
The Menu and Web interfaces can be used to quickly configure or reconfigure
local mirroring on session 1, and allow one of the following two mirroring
source options:
■
any combination of source port(s), trunk(s), and/or a mesh
■ one static, source VLAN interface
The Menu and Web interfaces also have these limits:
■ Configure and display only session 1 and only as a local mirroring session
for traffic in
both directions on the specified interface. (Selecting inbound-
only or outbound-only is not an option.)
■
If session 1 has been configured in the CLI for local mirroring for inbound-
only or outbound-only traffic on one or more interfaces, then using the
Menu or Web interface to change the session 1 configuration
automati­
cally reconfigures the session to monitor both inbound and outbound
traffic on the designated interface(s).
■ If session 1 has been configured in the CLI with an ACL or as a remote
mirroring session, then the Menu and Web interfaces are not available for
changing the session 1 configuration.
■
The CLI (and SNMP) can be used to override any Menu or Web interface
configuration of session 1.
B-31