SPAN or RSPAN Configuration for intermediate Switch.

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Aug 10th, 2010
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Hi


I am having three switches. My Sniffer is connected with my Core Switche port 11.


I am having 1 core SW, 2 Access SW.


CoreSW --------------Trunk--------------->AccessSw1-----------------Trunk-------------------------AccessSw2.


I am trying to configure Monitor session between AccessSW2 and Core SW.


my configuration ar Core SW


monitor session 1 destination interface Fa0/11
monitor session 1 source remote vlan 901


At AssessSw2


monitor session 1 source interface Fa0/1 - 22

monitor session 1 destination remote vlan 901


these configurations work fine if I ommit AccessSw1.


So what Configuration I need at AccessSW1 to communicate fine. Please help me on this..

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Jon Marshall Tue, 08/10/2010 - 07:16
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Have you created vlan 901 on access switch 1 ?


Jon

Md. Sultan Al Arif Tue, 08/10/2010 - 09:37
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no . I did not creat any Vlan 901. If I need to creat then should it be remote Vlan or not?


Do I need to add monitor session command there?

Jon Marshall Tue, 08/10/2010 - 09:38
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sultan.arif wrote:


no . I did not creat any Vlan 901. If I need to creat then should it be remote Vlan or not?


Do I need to add monitor session command there?


You need vlan 901 on all intermediate switches so just add the vlan to the vlan database ie.


access1(config)# vlan 901 name v901


you don't need to configure any monitor commands on the intermediate switch.


Jon

Alexander Rikmanis Mon, 01/27/2014 - 12:59
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bumping up the old post, however - do we need to specify a vlan 901 as remote-vlan  on SW2?

Or just creating vlan901 should be enough?


What would happen if we add "remote-vlan" command into vlan901 config os SW2?


Thanks.

Ankur Arora Mon, 01/27/2014 - 13:36
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Alexander,


You will have to specify the remote vlan on Sw2, just creating it won't help. Following is the config for the SW2.


Switch(config)# monitor session 1 source remote vlan 901

Switch(config)# monitor session 1 destination interface fastEthernet0/5



The commands are a bit platform specific, as they are a bit different for the 6500 switches:

For SW2 on Cisco6500


Router(config)# monitor session 1 type rspan-destination

Router(config-rspan-dst)# source remote vlan 2

Router(config-rspan-dst)# destination interface gigabitethernet 1/2



Thanks

Ankur



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