CANOGA PERKINS CanogaOS Configuration Guide User Manual
Page 339
CanogaOS Configuration Guide
Proprietary & Confidential Canoga Perkins Metro Ethernet Switches
Page 339 of 350
packet is dropped. These features include ingress ACL, VLAN’s ingress filter, MAC filter,
STP, VLAN tag control, port security, unknown routing packets.
z
Transmit (Tx) mirror—The goal of transmit (or egress) mirror is to monitor as much as
possible packets sent by the source interface after all modification and processing is
performed by the switch. A copy of each packet (except these packets: packets from CPU
port, mirroring packets) sent by the source is sent to the destination port for that mirror
session.
Some features that can cause a packet to be dropped during transmit processing might have
affect on mirror.
z
Both—In a mirror session, you can monitor a single port for both received and sent packets.
Source Port
A source port (also called a monitored port) is a switched or routed port that you monitor for
network traffic analysis. In a single mirror session, you can monitor source port traffic such as
received (Rx), transmitted (Tx), or bidirectional (both). The switch supports any number of
source ports (up to the maximum number of available ports on the switch) and any number of
source VLANs (up to the maximum number of VLANs supported).
A source port has these characteristics:
z
It can be any port type (for example, EtherChannel).
z
It can only be monitored in a single mirror session.
z
It cannot be a destination port.
z
Each source port can be configured with a direction (ingress, egress, or both) to monitor. For
EtherChannel sources, the monitored direction would apply to all the physical ports in the
group.
z
Source ports can be in the same or different VLANs.
z
For VLAN sources, whether VLAN is created or not, You can configure this VALN as
mirror source.
z
It can not be a physical port that is assigned to an EtherChannel group.
Destination Port
Each mirror session must have a destination port (also called a monitoring port) that receives a
copy of traffic from the source ports and VLANs.
The destination port has these characteristics:
z
It must reside on the same switch as the source port.
z
It can be any Ethernet physical port.
z
It can not be physical port that is assigned to an EtherChannel group.
z
It can participate in only one mirror session at a time (a destination port in one mirror
session cannot be a destination port for a second mirror session).
z
It cannot be a source port.
z
The port does not transmit any traffic except that required for the mirror session.