[c-nsp] SXI high cpu usage and rp inband SPAN feature not available

[Phil Mayers]

On Mon, Mar 16, 2009 at 08:42:38PM +0000, schilling wrote:
>We installed SXI Advanced Enterprise in one of our catalyst 6500 with
>sup720-3BXL, and the box is having persistent high CPU over 90%/80%
>where we have normal cpu utilization around 30%.   I played with RP
>SPAN on our SXF11 before, it's good to see what is punted to CPU
>according to the following Doc,
>
>SPAN RP-Inband and SP-Inband
>A SPAN for the RP or SP port in Cisco IOS Software is available in
>Cisco IOS Software Release 12.1(19)E and later.
>http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00804916e0.shtml
>
>But the feature is not in the current SXI even the configuration guide
>has that feature documented.
>http://cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/span.html#wp1089465
>
>test(config)#monitor session 1 ?
>  destination  SPAN destination interface or VLAN
>  filter              SPAN filter VLAN
>  source          SPAN source interface, VLAN
>
>test(config)#monitor session 1 source ?
>  interface                                   SPAN source interface
>  intrusion-detection-module   SPAN source intrusion-detection-module
>  remote                                      SPAN source Remote
>  vlan                                           SPAN source VLAN

On SXI you configure the sp/rp CPU span via the normal span CLI; no more 
crazy remote commands:

monitor session 2 type erspan-source
 source cpu rp