CANOGA PERKINS CanogaOS Configuration Guide - Manual (Page 340)

CanogaOS Configuration Guide
Proprietary & Confidential Canoga Perkins Metro Ethernet Switches Page 340 of 350
z It does not participate in spanning tree while the mirror session is active.
z When it is a destination port, all other normal system function of this port should not work
until mirror destination configure disabled on this port.
z No address learning occurs on the destination port.
46.1.3 Understanding Mirror
You can analyze network traffic passing through ports or VLANs by using mirror function to
send a copy of the traffic to another port on the switch that has been connected to a SwitchProbe
device or other Remote Monitoring (RMON) probe or security device. mirrors received or sent
(or both) traffic on a source port and received traffic on one or more source ports or source
VLANs, to a destination port for analysis.
For example, in figure 1-1, all traffic on port 4 (the source port) is mirrored to port 8 (the
destination port). A network analyzer on port 8 receives all network traffic from port 4 without
being physically attached to port 4.
Figure 1-1
Only traffic that enters or leaves source ports or traffic that enters source VLANs can be
monitored by using mirror; traffic that gets routed to ingress source ports or source VLANs
cannot be monitored. For example, if incoming traffic is being monitored, traffic that gets routed
from another VLAN to the source VLAN is not monitored; however, traffic that is received on
the source VLAN and routed to another VLAN is monitored.
mirror do not affect the switching of network traffic on source ports or source VLANs; a copy of
the packets received or sent by the source interfaces are sent to the destination interface.
46.1.4 Mirror Configuration
DUT# configure terminal Enter the Configure mode.
DUT(config)#monitor session 1
destination interface eth-0-8 Specify the mirror session and the destination port (monitoring port).