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Configuring the Switch
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CLI – Specify any interface, and then enter the threshold. The following disables
broadcast storm control for port 1, and then sets broadcast suppression at 600
octets per second for port 2 (which applies to all ports).
Configuring Port Mirroring
You can 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.
Command Usage
• Monitor port speed should match or exceed source port speed, otherwise traffic
may be dropped from the monitor port.
• All mirror sessions have to share the same destination port.
• When mirroring port traffic, the target port must be included in the same VLAN as
the source port.
Command Attributes
• Mirror Sessions – Displays a list of current mirror sessions.
• Source Port – The port whose traffic will be monitored.
• Type – Allows you to select which traffic to mirror to the target port, Rx (receive),
or Tx (transmit).
• Target Port – The port that will mirror the traffic on the source port.
Console(config)#interface ethernet 1/1 4-131
Console(config-if)#no switchport broadcast 4-137
Console(config-if)#exit
Console(config)#interface ethernet 1/2
Console(config-if)#switchport broadcast octet-rate 600 4-137
Console(config-if)#end
Console#show interfaces switchport ethernet 1/2 4-140
Information of Eth 1/2
Broadcast threshold: Enabled, 600 octets/second
Lacp status: Enabled
Ingress rate limit: disable, Level: 30
Egress rate limit: disable, Level: 30
VLAN membership mode: Hybrid
Ingress rule: Disabled
Acceptable frame type: All frames
Native VLAN: 1
Priority for untagged traffic: 0
Gvrp status: Disabled
Allowed Vlan: 1(u),
Forbidden Vlan:
Private-VLAN mode: NONE
Private-VLAN host-association: NONE
Private-VLAN mapping: NONE
Console#
Source
port(s)
Single
target
port