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Cisco Bug: CSCuq86482 - Doc: Spurious DHCP Server Detection not support in SUP2T / SUP720

Last Modified

Aug 09, 2017

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases

n/a

Description (partial)

Symptom:
Not able to configure Spurious DHCP Server Detection command " ip dhcp snooping detect spurious x"

Conditions:
SUP2T   s2t54-advipservicesk9-mz.SPA.151-2.SY1.bin,  but same issue on sup720 as well.

BGL.P.13-6500-1#sh ver | in image
System image file is "bootdisk:s2t54-ipservicesk9-mz.SPA.151-1.SY3";

BGL.P.13-6500-1(config)#ip dhcp snooping ?
database     DHCP snooping database agent
information  DHCP Snooping information
        track        DHCP snooping host tracking
        verify       DHCP snooping verify
        vlan         DHCP Snooping vlan
        <cr>

BGL.P.13-6500-1(config)#ip dhcp snooping detect spurious vlan 2-4
                                          ^
% Invalid input detected at '^' marker.


BGL.P.13-6500-1(config)#do sh ip dhcp snooping detect spurious
Spurious DHCP server detection disabled

Detection VLAN list : none
Detection interval : 30 minutes

I also tried this on the another lab device with sup720 running 15.1(1)SY1,

BGL.R.07-6500-2#sh ver | in image
System image file is "sup-bootdisk: s72033-advipservicesk9-mz.151-1.SY1.bin"

BGL.R.07-6500-2(config)#ip dhcp snooping ?
  database     DHCP snooping database agent
  information  DHCP Snooping information
  track        DHCP snooping host tracking
  verify       DHCP snooping verify
  vlan         DHCP Snooping vlan
  <cr>

BGL.R.07-6500-2(config)#ip dhcp snooping detect?
% Unrecognized command

and with sup720 running 12.2(33)SXJ6,

BGL.R.07-6500-2#sh ver | in image
System image file is "sup-bootdisk:s72033-ipservicesk9_wan-mz.122-33.SXJ6.bin"

BGL.R.07-6500-2(config)#ip dhcp snooping ?
  database     DHCP snooping database agent
  information  DHCP Snooping information
  track        DHCP snooping host tracking
  verify       DHCP snooping verify
  vlan         DHCP Snooping vlan
  <cr>

BGL.R.07-6500-2(config)#ip dhcp snooping detect?
% Unrecognized command
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