DHCP IP Address Assignment Stop Data VLAN - HPE 5900AF-48XG-4QSFP+ Switch-2432P06

[heartwin1979]

We are facing issue since very long that Users in Data VLAN stop getting IP Address from DHCP Server. For recovery we need to admin down and up the SVI (L3 VLAN), after bounce L3 VLAN Services start working. Earlier we were suspecting some firmware bug, hence we upgraded the firmware from 5900_5920-cmw710-system-r2422p02.bin to 5900_5920-cmw710-system-r2432p06.bin, but still is persisting. Can anybody help me for permanent fix for this issue. I am pasting some require information below

<core001>display version
HPE Comware Software, Version 7.1.045, Release 2432P06
Copyright (c) 2010-2018 Hewlett Packard Enterprise Development LP
HPE 5900AF-48XG-4QSFP+ Switch uptime is 0 weeks, 2 days, 4 hours, 18 minutes
Last reboot reason : USER reboot

Boot image: flash:/5900_5920-cmw710-boot-r2432p06.bin
Boot image version: 7.1.045, Release 2432P06
  Compiled Jan 30 2018 16:00:00
System image: flash:/5900_5920-cmw710-system-r2432p06.bin
System image version: 7.1.045, Release 2432P06
  Compiled Jan 30 2018 16:00:00
Feature image(s) list:
  flash:/5900_5920-cmw710-packet-capture-r2432p06.bin, version: 7.1.045
    Compiled Jan 30 2018 16:00:00

Slot 1:
Uptime is 0 weeks,2 days,4 hours,18 minutes
5900AF-48XG-4QSFP+ Switch with 2 Processors
BOARD TYPE:         5900AF-48XG-4QSFP+ Switch
DRAM:               2048M bytes
FLASH:              512M bytes
PCB 1 Version:      VER.B
Bootrom Version:    157
CPLD 1 Version:     004
CPLD 2 Version:     002
Release Version:    HPE 5900AF-48XG-4QSFP+ Switch-2432P06
Patch Version  :    None
Reboot Cause  :     UserReboot
[SubSlot 0] 48SFP Plus+4QSFP Plus

Slot 2:
Uptime is 0 weeks,2 days,4 hours,18 minutes
5900AF-48XG-4QSFP+ Switch with 2 Processors
BOARD TYPE:         5900AF-48XG-4QSFP+ Switch
DRAM:               2048M bytes
FLASH:              512M bytes
PCB 1 Version:      VER.B
Bootrom Version:    157
CPLD 1 Version:     004
CPLD 2 Version:     002
Release Version:    HPE 5900AF-48XG-4QSFP+ Switch-2432P06
Patch Version  :    None
Reboot Cause  :     UserReboot
[SubSlot 0] 48SFP Plus+4QSFP Plus
<core001>

<ussnnra-core001>display current-configuration interface Vlan736
#
interface Vlan-interfaceXXX
 description WLAN-XXX-001
 ip binding vpn-instance local_lan
 ip address 10.X.X.1 255.255.254.0
 igmp enable
 igmp fast-leave
 igmp version 3
 dhcp select relay
 dhcp relay server-address 10.X.X.52
 dhcp relay server-address 10.X.X.76
 dhcp relay server-address 10.X.X.58
 udp-helper server 10.X.X.52
 udp-helper server 10.X.X.76
#
return
<core001>

<core001>display vlan 7XX
 VLAN ID: 7XX
 VLAN type: Static
 Route interface: Configured
 IPv4 address: 10.X.X.1
 IPv4 subnet mask: 255.255.254.0
 Description: WLAN_XXX-001
 Name: VLAN 0736
 Tagged ports:
    Bridge-Aggregation11          Bridge-Aggregation12
    Bridge-Aggregation13          Bridge-Aggregation15
    Bridge-Aggregation16          Bridge-Aggregation18
    Bridge-Aggregation24
    Ten-GigabitEthernet1/0/34
    Ten-GigabitEthernet1/0/35
    Ten-GigabitEthernet1/0/36
    Ten-GigabitEthernet1/0/37
    Ten-GigabitEthernet1/0/38
    Ten-GigabitEthernet1/0/39
    Ten-GigabitEthernet1/0/41
    Ten-GigabitEthernet2/0/34
    Ten-GigabitEthernet2/0/35
    Ten-GigabitEthernet2/0/36
    Ten-GigabitEthernet2/0/37
    Ten-GigabitEthernet2/0/38
    Ten-GigabitEthernet2/0/39
    Ten-GigabitEthernet2/0/41
 Untagged ports: None

[HappyBiswa]

Hi 

Does the DHCP servers fall in the Vlan 736 range . If yes then remove the DHCP server relay config .

Also can you enable DHCP snooping as you have multiple servers .

Please share debug dhcp output .

Thank you

[heartwin1979]

Hi,

DHCP servers located over the WAN. DHCP Snooping is enabled on Access Layer and there is no access ort on Core Switch.

Thanks