Ethernet Switching
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Ethernet Switching

Port mirroring to a local analyzer on EX3300

‎12-21-2014 01:44 PM

I am trying to find a configuration snippet that will allow me to configure an EX3300-24T switch to mirror vlan traffic to an analyzer connected to a local port on the switch.  I am running Junos 12.3R6.

 

Any assistance would be greatly apprciated.

 

Regards,

DAK
6 REPLIES 6
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Ethernet Switching

Re: Port mirroring to a local analyzer on EX3300

‎12-21-2014 02:29 PM

I believe this is the example configuration for your situation.

 

http://www.juniper.net/techpubs/en_US/junos10.4/topics/example/port-mirroring-local-ex-series.html

Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home
Ethernet Switching

Re: Port mirroring to a local analyzer on EX3300

‎12-21-2014 03:09 PM

Thank you, Steve.  I saw this example, but it does not use vlan interfaces as the ingress interface.  I want to monitor traffic on two vlan interfaces to an external monitoring device.

DAK
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Ethernet Switching

Re: Port mirroring to a local analyzer on EX3300

‎12-21-2014 03:18 PM

Sorry, I missed that this input was a vlan interface.  I don't think this is possible, the port mirror options seem to only take physical interfaces for input selection where vlans can be used for output in order to forward the mirror to a remote switch port.

Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home
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Ethernet Switching

Re: Port mirroring to a local analyzer on EX3300

‎12-21-2014 05:10 PM

Thanks again, Steve.  I was afraid that might be the answer, but was hoping for a different answer.  I will have to call JTAC to see how I can get around this shortcoming.

 

Regards,

DAK
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Ethernet Switching

Re: Port mirroring to a local analyzer on EX3300

‎12-21-2014 05:17 PM

Please let us know what JTAC has to say.  VLAN for input would be nice to have even if it ends up being a more complicated work around.

Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home
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Ethernet Switching

Re: Port mirroring to a local analyzer on EX3300

‎12-22-2014 03:00 AM

I think you will find that port mirroring on the EX switch is an exercise in frustration, to say the least.  The hardware is limited as to what can be done.  Your best bet is the link that spuluka suggested, craft your filters to be inclusive of all traffic on that VLAN, and mirror every port that is a member of that VLAN.

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