Pkts128to255Octets:76
Pkts256to511Octets:7
Pkts512to1023Octets:0
Pkts1024to1518Octets:0
11. Configure SPAN
11.1.
Overview
11.1.1. Learning SPAN
The user can use the port mirroring (SPAN) provides the function, the Design-Port packet is copied to
the switch on another connected with network monitoring equipment port, for network monitoring and
troubleshooting.
Through the SPAN can monitor all incoming and output message from the source port.For example,
in the following figure,Port 5 on all the packets are mapped to the port 10,Connected on port 10 of
the network analyzer although not direct connected with port 5, but can be received by all the packets
on port 5.
SPAN configuration instance
SPAN does not affect the message source and destination ports exchange,just from the source port
all input and output message copying a to the port of destination.W hen the image flow of source
port more than the destination port's bandwidth,For example, the 100Mbps destination port
monitoring 1000Mbps source port traffic, may cause packet is discarded.
11.2.
SPAN concepts and terminology
11.2.1. SPAN Session
SPAN session is to mirror the flow of data between source port and destination port,can monitor a
single or multiple ports of input, output, two-way message.Interface and AP type of port can be
configured to SPAN session source port and destination port..Port after joining SPAN session does
not affect the normal operation of the switch.
The user can in the shutdown port configuration SPAN session, But the SPAN session is inactive,
only the relevant port is opened, the SPAN session will become active.In addition, the SPAN session
on the switch power does not take effect immediately,until the destination port in an operational state,