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Cisco Bug: CSCut52246 - DHCP snooping trust/rate is unactive after reload

Last Modified

Jun 28, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

15.2(2.0.0)

Description (partial)

Symptom:
Issue is seen with 15.2(2a)E1 on 2960X

Before reload,

2960X-1#sh ip dhcp snooping
Switch DHCP snooping is disabled
Switch DHCP gleaning is disabled
DHCP snooping is configured on following VLANs:
none
DHCP snooping is operational on following VLANs:
none
DHCP snooping is configured on the following L3 Interfaces:

Insertion of option 82 is enabled
   circuit-id default format: vlan-mod-port
   remote-id: e089.9dec.e200 (MAC)
Option 82 on untrusted port is not allowed
Verification of hwaddr field is enabled
Verification of giaddr field is enabled
DHCP snooping trust/rate is configured on the following Interfaces:

Interface                  Trusted    Allow option    Rate limit (pps)
-----------------------    -------    ------------    ----------------   
GigabitEthernet1/0/1       yes        yes             unlimited           <<<<<<
  Custom circuit-ids:
GigabitEthernet1/0/2       yes        yes             unlimited           <<<<<<
  Custom circuit-ids:
Port-channel9              yes        yes             unlimited           <<<<<<
Interface                  Trusted    Allow option    Rate limit (pps)
-----------------------    -------    ------------    ----------------   
  Custom circuit-ids:
2960X-1#      

After reload,

2960X-1#sh ip dhcp snooping
Switch DHCP snooping is disabled
Switch DHCP gleaning is disabled
DHCP snooping is configured on following VLANs:
none
DHCP snooping is operational on following VLANs:
none
DHCP snooping is configured on the following L3 Interfaces:

Insertion of option 82 is enabled
   circuit-id default format: vlan-mod-port
   remote-id: e089.9dec.e200 (MAC)
Option 82 on untrusted port is not allowed
Verification of hwaddr field is enabled
Verification of giaddr field is enabled
DHCP snooping trust/rate is configured on the following Interfaces:

Interface                  Trusted    Allow option    Rate limit (pps)
-----------------------    -------    ------------    ----------------   
2960X-1#

Conditions:
"ip dhcp snooping trust" configured under portchannel and if we reload device.
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