HP ProCurve Management And Configuration Manual page 536

Monitoring and Analyzing Switch Operation
Traffic Mirroring
C a u t i o n
B-26
Exit Switch: The switch providing the (destination) exit port for mirrored
traffic. Depending on how mirroring is configured, this can be either the
mirroring source switch or a remote exit switch. See also Local Exit Port,
Remote Exit Switch, and Remote Exit Port.
Host: Used in this chapter to refer collectively to a traffic analyzer or intru­
sion detection system (IDS).
IDS: Intrusion Detection System.
Local Exit Port: A port configured on a mirroring source switch as the port
through which traffic from a specific local mirroring session leaves the
switch. A traffic analyzer or IDS should be connected to this port. Up to
four local mirroring sessions can be assigned to either the same local exit
port or up to four different exit ports. (The exit switch also supports 32
remote mirroring session assignments, regardless of how many exit ports
are used.) For local mirroring, the exit port can be any port on the switch
that is not configured as a mirroring source. See also Local Exit Port.
Local Mirroring: The mirroring exit port and the mirroring source interface
are on the same switch.
Mirroring Source Switch: A switch configured to mirroring inbound and/or
outbound traffic to a destination on the same (local) switch or to a
destination on a remote switch. This is the switch on which mirrored
traffic originates.
Remote Exit Port: A port configured on a remote exit switch as the port
through which traffic from a specific remote mirroring session leaves the
switch. A traffic analyzer or IDS should be connected to this port. Up to
32 mirroring sessions can be assigned to the same remote exit port. (The
exit switch supports a total of 32 remote mirroring session assignments,
regardless of how many exit ports are used.) The mirrored traffic entry
port for a given session and the exit port for that session must belong to
the same VLAN. See also Remote Exit Switch and Exit Switch.
A mirroring exit port should be connected only to a network analyzer,
IDS, or other network edge device that has no connection to other
network resources. Allowing a mirroring exit port connection to a net­
work can result in serious network performance problems, and is strongly
discouraged by ProCurve Networking.
Remote Exit Switch: The destination switch for mirrored traffic when the
source and destination of mirrored traffic are on different switches. Also
termed the Remote Destination Switch.