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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.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

View solution in original post

8 Replies 8

marce1000
Hall of Fame
Hall of Fame

 

 - Check if you may got hit by this bug :

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

 M.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

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

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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.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

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 ?