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Is port mirroring out of band?
Out-of-band Usage monitoring requires that your switch is capable of port mirroring and that a mirror source and a mirror destination (also known as Switched Port Analyzer (SPAN) ports) have been configured. The switch’s mirror source port is the one being monitored (typically the aggregation point).
How do I check ports on a Cisco switch?
To see the summary information on all ports on the switch, enter the show interface status command with no arguments. Specify a particular module number to see information on the ports on that module only. Enter both the module number and the port number to see detailed information about the specified port.
What is a port mirroring in networking?
The concept behind port mirroring is quite simple. When you configure a switch, you reserve one port. Then you configure the switch to “mirror” all traffic that passes through to that reserved port. Whenever the switch processes a packet, it makes a copy and sends it to whatever is connected to the aforementioned port.
How are packets monitored in Cisco Catalyst 3750 switch?
• Packets of all types, including BPDU and Layer 2 protocol packets, are monitored. Therefore, a local SPAN session with encapsulation replicate enabled can have a mixture of untagged, ISL, and IEEE 802.1Q tagged packets appear on the destination port.
Is the Catalyst 3750 compatible with Cisco IOS 12.2?
Catalyst 3750 switches that run Cisco IOS ® Release 12.2 (25)SEB are compatible with Cisco EtherSwitch service modules that run Cisco IOS Release 12.2 (25)EZ. Catalyst 3750 switches and Cisco EtherSwitch service modules can be in the same switch stack.
How to set span and RSPAN in Catalyst 3750?
Table 30-1 Default SPAN and RSPAN Configuration Feature Default Setting SPAN state (SPAN and RSPAN) Disabled. Source port traffic to monitor Both received and sent traffic ( both ). Encapsulation type (destination port) Native form (untagged packets). Ingress forwarding (destination port) Disabled
Where is Port 10 in a Cisco switch stack?
A network analyzer on port 10receives all network traffic from port 5 without being physically attached to port 5. Figure 30-2 is an example of a local SPAN in a switch stack, where the source and destination ports reside on different stack members.