Configure Mirror Ports ?

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could you please inform me, which mean Mirror ? when i can use this command ,what a benefit from it ? 
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MUNIR ENG

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Posted 3 years ago

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Patrick Voss, Employee

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Mirroring can be used for troubleshooting or data collection. Typically it is used for troubleshooting to investigate certain things not working correctly. You enable mirror on the port experiencing issues and mirror to another port with Wireshark active.
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Stephen Williams, Employee

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Port mirroring configures the switch to copy all traffic
associated with one or more ports or VLANS to another port so it can be connected to a network
analyzer or RMON probe for packet analysis.
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MUNIR ENG

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thank for replay, could you please give same simple example configuration  , how to can copy all traffic with one or Vlans? 
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Stephen Williams, Employee

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#Takes ingress traffic from vlan "Default and mirrors it to port 1
conf mirror add vlan "Default" ingress
conf mirror to port 1
enable mirror


#Takes ingress and egress traffic from port 2 and mirrors it to port 1
conf mirror add port 2 ingress-and-egress
conf mirror to port 1
enable mirror

You can also check our our GTAC Knowledge Article about this topic.

https://gtacknowledge.extremenetworks.com/articles/How_To/How-To-Enable-And-Configure-Mirroring-In-E...
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MUNIR ENG

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thank you
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Stephen Williams, Employee

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Glad to help.
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Ryan Mathews, Alum

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Here's the formal tech document on EXOS Mirroring: http://documentation.extremenetworks.com/exos/EXOS_All/Slots_and_Ports/c_mirroring.shtml

To go along with the direction Stephen and Patrick provided.
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MUNIR ENG

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thank you