SPAN _ERROR

[Hoang Hung]

Hi guy

I have config 3 session monitor SPAN. but 2 session moniotor ok. Only have session 3 error: no H/W resource for session source .

< Nexus 9504 version : nxos 9.2.1 >

Please help me

Thanks guy

[Giuseppe Larosa]

Hello Hoang,

 the message says that a maximum of two concurrent SPAN sessions can be active on the switch.

This is normal and typical on many switches. Only two local SPAN sessions can be active at the same time.

By the way, your sessions are using the same source interfaces.

Hope to help

Giuseppe

[Hoang Hung]

Thanks @Giuseppe Larosa 

Do you solution for it ?. 

[Giuseppe Larosa]

Hello Hoang,

 the limit is valid only for local SPAN

If you use a Remote SPAN, that is your destination becomes a RSPAN Vlan and you move the third protocol analyzer to another switch (you need to define the remote SPAN  Vlan on both switches a L2 end to end path for RSPAN Vlan needs to be provided for high volumes of traffic you should use a dedicated link, otherwise you can add the RSPAN Vlan to the list of allowed Vlans on the trunk between the two switches).

The RSPAN session should be allowed in addition to two local SPAN sessions.

Hope to help

Giuseppe

[Hoang Hung]

@giuseppe
Thanks you so much
Hunght11