Cisco 9200l Core DHCP Not Handing Out Addresses

[aBITtooTALL68]

Hello,

I have been tasked with configuring multiple DHCP pools within our L3 core switch. Each DHCP pool will belong to a single vlan.

Currently I have a Vlan interface and DHCP pool configured but devices are not receiving leased addresses within the pool after the Vlan has been assigned to a device's physical interface. 

Current configs:

!
ip dhcp pool Verkada
network 10.52.0.0 255.255.255.0
default-router 10.52.0.254
dns-server 8.8.8.8
lease 4
!

interface Vlan52
description Verkada - Vlan 52
ip address 10.52.0.254 255.255.255.0
ip pim sparse-dense-mode
end

The Vlan has been allowed on the necessary trunk ports and google's DNS has been used for testing sakes. 

Any insight would be greatly appreciated. Thank you!

[MHM Cisco World]

Share 

Show ip dhcp pool

Show ip dhcp server statistics

Show vlan breif 

MHM

[aBITtooTALL68]

Hello MHM,

Thank you for your reply. Here is the information requested below. Please note that I did not include all the active vlans, nor the other pools I have tested. 

OOJH-MDF-CORE#show ip dhcp pool

Pool Verkada :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 254
Leased addresses : 0
Excluded addresses : 0
Pending event : none
1 subnet is currently in the pool :
Current index IP address range Leased/Excluded/Total
10.52.0.1 10.52.0.1 - 10.52.0.254 0 / 0 / 254

!

OOJH-MDF-CORE#show ip dhcp server statistics
Memory usage 21894
Address pools 4
Database agents 0
Automatic bindings 0
Manual bindings 0
Expired bindings 3
Malformed messages 3
Secure arp entries 0
Renew messages 3350
Workspace timeouts 0
Static routes 0
Relay bindings 0
Relay bindings active 0
Relay bindings terminated 0
Relay bindings selecting 0

Message Received
BOOTREQUEST 21
DHCPDISCOVER 11785593
DHCPREQUEST 14960239
DHCPDECLINE 5015
DHCPRELEASE 74426
DHCPINFORM 2296
DHCPVENDOR 0
BOOTREPLY 0
DHCPOFFER 4893219
DHCPACK 14808559
DHCPNAK 17065

Message Sent
BOOTREPLY 0
DHCPOFFER 4
DHCPACK 6
DHCPNAK 110434

Message Forwarded
BOOTREQUEST 25
DHCPDISCOVER 11112121
DHCPREQUEST 15124532
DHCPDECLINE 5083
DHCPRELEASE 74449
DHCPINFORM 1919
DHCPVENDOR 0
BOOTREPLY 0
DHCPOFFER 4893219
DHCPACK 14808559
DHCPNAK 17065

DHCP-DPM Statistics
Offer notifications sent 0
Offer callbacks received 0
Classname requests sent 0
Classname callbacks received 0

!

OOJH-MDF-CORE#show vlan brief

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Te1/1/3, Te1/1/4
2 DATA-SSD68 active
52 VLAN0052 active

!

[MHM Cisco World]

all is good 
share 
show interface trunk 
MHM

[aBITtooTALL68]

Thanks for checking the information. Here is the show int trunk:

OOJH-MDF-CORE#show int trunk

Port Mode Encapsulation Status Native vlan
Te1/0/3 on 802.1q trunking 1
Te1/0/4 on 802.1q trunking 1
Te1/0/5 on 802.1q trunking 1
Te1/0/6 on 802.1q trunking 1
Te1/0/7 on 802.1q trunking 1
Te1/0/8 on 802.1q trunking 1
Te1/0/9 on 802.1q trunking 1
Te1/0/10 on 802.1q trunking 1
Te1/0/11 on 802.1q trunking 1
Te1/0/12 on 802.1q trunking 1
Te1/1/1 on 802.1q trunking 1
Te1/1/2 on 802.1q trunking 1
Te1/1/7 on 802.1q trunking 1
Te1/1/8 on 802.1q trunking 1
Po1 on 802.1q trunking 1

Port Vlans allowed on trunk
Te1/0/3 1-2,21-22,52,101,109,111,203,219,224,600,610
Te1/0/4 1,21-22,52,101-102,109,111,203,219,600,610
Te1/0/5 1,21-22,52,101,103,111,203,219,600,610
Te1/0/6 1-3,21-22,52,99-102,108,111-112,203,206,219-220,600,604,610
Te1/0/7 1,21-22,52,101-102,111,203,219,600,610
Te1/0/8 1,21-22,52,101,103,111,203,219,600,610
Te1/0/9 1,21-22,52,99-100,104,111,203,220,233,600,603,610-611
Te1/0/10 1,21-22,50,52,99-100,105,111-113,203,220,253,600,605,611
Te1/0/11 1,21-22,52,99-100,106,111,203,220,243,600,604,611
Te1/0/12 1-4094
Te1/1/1 2,21-22,99-107,109,111-113,172-173,611
Te1/1/2 2,21-22,101-107,111,172-173,611
Te1/1/7 1,21-22,52,101-102,106,111-112,203,219,303,610-611
Te1/1/8 1-4094
Po1 1-302,304-4094

Port Vlans allowed and active in management domain
Te1/0/3 1-2,22,101,109,111,203,219,224,610
Te1/0/4 1,22,101-102,109,111,203,219,610
Te1/0/5 1,22,101,111,203,219,610
Te1/0/6 1-3,22,99-102,108,111-112,203,206,219-220,604,610
Te1/0/7 1,22,101-102,111,203,219,610
Te1/0/8 1,22,101,111,203,219,610
Te1/0/9 1,22,99-100,104,111,203,220,233,603,610
Te1/0/10 1,22,50,99-100,105,111-113,203,220,253,605
Te1/0/11 1,22,99-100,106,111,203,220,243,604
Te1/0/12 1-3,9-10,20,22,50-51,99-102,104-109,111-113,115,172-173,201-203,206,214,219-220,223-225,227-230,233,240,243,250,253,603-605,610
Te1/1/1 2,22,99-102,104-107,109,111-113,172-173
Te1/1/2 2,22,101-102,104-107,111,172-173
Te1/1/7 1,22,101-102,106,111-112,203,219,610
Te1/1/8 1-3,9-10,20,22,50-51,99-102,104-109,111-113,115,172-173,201-203,206,214,219-220,223-225,227-230,233,240,243,250,253,603-605,610
Po1 1-3,9-10,20,22,50-51,99-102,104-109,111-113,115,172-173,201-203,206,214,219-220,223-225,227-230,233,240,243,250,253,603-605,610

Port Vlans in spanning tree forwarding state and not pruned
Te1/0/3 1-2,22,101,109,111,203,219,224,610
Te1/0/4 1,22,101-102,109,111,203,219,610
Te1/0/5 1,22,101,111,203,219,610
Te1/0/6 1-3,22,99-102,108,111-112,203,206,219-220,604,610
Te1/0/7 1,22,101-102,111,203,219,610
Te1/0/8 1,22,101,111,203,219,610
Te1/0/9 1,22,99-100,104,111,203,220,233,603,610
Te1/0/10 1,22,50,99-100,105,111-113,203,220,253,605

Port Vlans in spanning tree forwarding state and not pruned
Te1/0/11 1,22,99-100,106,111,203,220,243,604
Te1/0/12 1-3,9-10,20,22,50-51,99-102,104-109,111-113,115,172-173,201-203,206,214,219-220,223-225,227-230,233,240,243,250,253,603-605,610
Te1/1/1 2,22,99-102,104-107,109,111-113,172-173
Te1/1/2 2,22,101-102,104-107,111,172-173
Te1/1/7 1,22,101-102,106,111-112,203,219,610
Te1/1/8 1-3,9-10,20,22,50-51,99-102,104-109,111-113,115,172-173,201-203,206,214,219-220,223-225,227-230,233,240,243,250,253,603-605,610
Po1 1-3,9-10,20,22,50-51,99-102,104-109,111-113,115,172-173,201-203,206,214,219-220,223-225,227-230,233,240,243,250,253,603-605,610

Te1/0/3 is where the device is located at that I am trying to get DHCP to work. We have a transparent VTP topology and we only allow certain vlans on different trunk ports depending on the location & needs.

Just incase, here is the trunking interface for the otherside of the trunk:

OOJH-IDF-1W#show int trunk

Port Mode Encapsulation Status Native vlan
Gi1/0/48 on 802.1q trunking 1
Te1/1/1 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi1/0/48 1,21-22,52,99-101,103,111,203,220,224,610
Te1/1/1 1-2,21-22,52,99-101,109,111,203,219-220,224,600,610

Port Vlans allowed and active in management domain
Gi1/0/48 1,21-22,99-101,103,111,203,224,610
Te1/1/1 1-2,21-22,99-101,111,203,219,224,600,610

Port Vlans in spanning tree forwarding state and not pruned
Gi1/0/48 1,21-22,99-101,103,111,203,224,610
Te1/1/1 1-2,21-22,99-101,111,203,219,224,600,610 

[MHM Cisco World]

The core and SW is allow vlan but it not active 

Vlan52 is missing from trunk 

So check both SW by do 

Show vlan see if vlan is add correctly to database of SW's

MHM

[MHM Cisco World]

also make double check if you run STP in that VLAN52 or not 

MHM

[paul driver]

Hello
Do you have snooping enabled?, if so make sure you have trusted the up-links to the cores switch ?

show ip dhcp snooping 

[aBITtooTALL68 · Accepted solution]

Turns out that the interface for the VLAN was built on another switch by my predecessor which created many many issues. Removed the conflicting interface and the issue was resolved.