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Cisco 9300 Switch DHCP Snooping turned on Will not pull DHCP IP's

PTerranova13
Level 1
Level 1

I have 3 new stacks of 9300 switches. 2 of the stacks work fine with DHCP Snooping on. 1 Stack does not. When the below commands are on the switch DHCP will not pulled. When i remove them IP's pull. I have reloaded the switch and still doesnt work. 

 

IOS 16.12.4 

The following commands are on the switch 

ip dhcp snooping vlan 1-4094
no ip dhcp snooping information option
ip dhcp snooping

 

Two trunk fiber ports back to core 

 

IND-IDF-08#sh run int t1/1/1
Building configuration...

Current configuration : 144 bytes
!
interface TenGigabitEthernet1/1/1
description IND-CORE-9500
switchport mode trunk
channel-group 1 mode active
ip dhcp snooping trust
end

IND-IDF-08#sh run int t2/1/1
Building configuration...

Current configuration : 144 bytes
!
interface TenGigabitEthernet2/1/1
description IND-CORE-9500
switchport mode trunk
channel-group 1 mode active
ip dhcp snooping trust
end

1 Accepted Solution

Accepted Solutions

 

 - You may give it a try on the problematic stack , with the current advisory release :

                https://software.cisco.com/download/home/286313862/type/282046477/release/Amsterdam-17.3.4

 M.



-- Let everything happen to you  
       Beauty and terror
      Just keep going    
       No feeling is final
Reiner Maria Rilke (1899)

View solution in original post

8 Replies 8

Mark Elsen
Hall of Fame
Hall of Fame

 

 - Check if you may got hit by this bug :

           https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvi39202

 M.



-- Let everything happen to you  
       Beauty and terror
      Just keep going    
       No feeling is final
Reiner Maria Rilke (1899)

Says the current version i am on is a fixed version. I did inquire with TAC but not reviewing with them until Monday. All 3 stacks have same IOS Code as well right now. Two are working but i am worried it will be a matter of time before they stop now. 

balaji.bandi
Hall of Fame
Hall of Fame

what is the other switches running Code - must be differrent than this, since this has bug i have encountered.

 

Try 17.X

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

Same versions on all 3 switch stacks 16.12.4 

 

 - You may give it a try on the problematic stack , with the current advisory release :

                https://software.cisco.com/download/home/286313862/type/282046477/release/Amsterdam-17.3.4

 M.



-- Let everything happen to you  
       Beauty and terror
      Just keep going    
       No feeling is final
Reiner Maria Rilke (1899)

Upgrading code with Cisco TAC resolved the issue. There not sure which bug i was hitting but I was definitely hitting something regarding DHCP Snooping. Thanks everyone 

Can you post show run inter port-chan X (from working and not working )

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

Hello,

 

just to be sure: did you configure 'ip dhcp snooping trust' on the port channel interfaces as well ?