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I'm trying to enable span mirroring in cisco switch, but the switch doesn't seem to have the "monitor" option. Could someone tell me how to make this work?

  • Is this packet tracer? it doesn't have all feature of a real IOS device. If not we need your switch model and software version to help you. – JFL Jan 9 '17 at 14:09
  • Could you please attach the show version of the Switch?<br/> On Cisco Packet Tracer 7 the monitor session configuration works for the 2960, 2950 and 3560 Switch <br/> ![enter image description here](i.stack.imgur.com/V0Wzg.png) – cost Jan 9 '17 at 14:20
  • In addition to @JFL's remarks, please copy/paste output instead and format it using { } instead of posting images. – Teun Vink Jan 9 '17 at 14:23
  • Yes, I'm using cisco packet tracer 6.3 @JFL – Jotsna Jan 9 '17 at 14:56
  • Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(25)FX, RELEASE SOFTWARE (fc1) - @cost Switch>enable Switch#config Configuring from terminal, memory, or network [terminal]? Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#no monitor session 1 ^ % Invalid input detected at '^' marker. – Jotsna Jan 9 '17 at 14:57
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Packet Tracer has some built-in functionality to allow you to view the packets on the wire and won't support the monitor commands.

However, if you weren't on tracer, the setup is straightforward. E.g.

monitor session 1
monitor session 1 source int gi1/0/2 both (-- specifies span tx and rx
monitor sessions 1 destination int gi1/0/3

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