User's Manual

Table Of Contents
Users Manual of SGS-5240 Series Managed Switch
74
4.2.6 Port Mirror
4.2.6.1 Local Port Mirror
Switch Management > Port Mirror > Local Port Mirror page is used to mirror traffic from any source port to a target port for
real-time analysis. You can then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the
source port in a completely unobtrusive manner.
Source Port The port whose traffic will be monitored.
Target Port The port that will mirror the traffic on the source port.
Type Allows you to select which traffic to mirror to the target port, Rx(receive), Tx (transmit), or Both. (Default: Rx)
4.2.6.2 RSPAN
Switch Management > Port Mirror >RSPAN page is used to mirror traffic from remote switches for analysis at a destination port
on the local switch.
Take the following step to configure an RSPAN session:
1. Use the VLAN Static List to reserve a VLAN for use by RSPAN (marking the “Remote VLAN” field on this page. (Default
VLAN 1 is prohibited.)
2. Set up the source switch on the RSPAN configuration page by specifying the mirror session, the switch’s role (Source), the
RSPANVLAN, and the uplink port
1. Then specify the source port(s), and the traffic type to monitor (Rx, Tx or Both).
3. Set up all intermediate switches on the RSPAN configuration page, entering the mirror session, the switch’s role
(Intermediate), the RSPAN VLAN, and the uplink port(s).
4. Set up the destination switch on the RSPAN configuration page by specifying the mirror session, the switch’s role
(Destination), the destination port, whether or not the traffic exiting this port will be tagged or untagged, and the RSPAN VLAN.
Then specify each uplink port where the mirrored traffic is being received.