Allied Telesis x900-48 series - Manual (Page 29)

Page 29 | AlliedWare™ OS How To Note: DHCP snooping on AT-9900-style switches
Troubleshooting > The DHCP ACK is dropped by the switch
The second DHCP request will look slightly different:
But the result is the same: the DHCP ACK has been dropped by the switch.
DHCPSN_Process: [0b439d6c] DHCP Snooping pkt for VLAN 1 from port 1
DHCPSN_Process: [0b439d6c] Type: REQUEST
DHCPSN_Process: [0b439d6c] On DHCP Snooping non-trusted port
DHCPSN_Process: [0b439d6c] DHCP Snoop forwarding pkt at L2 for VLAN 1 InPort 1
DHCPSN_Process: [0b439d6c] L2 Dest MAC is broadcast
DHCPSN_Process: [0b439d6c] Type: REQUEST, L2 forward to trusted ports
DHCPSN_Process: [0b439d6c] Forward ports (except 1)
DHCPSN_Process: [0b439d6c] Tagged:None
DHCPSN_Process: [0b439d6c] Untagged:48
DHCPSN_Process: [0b43a58c] DHCP Snooping pkt for VLAN 1 from port 48
DHCPSN_Process: [0b43a58c] Type: REPLY
DHCPSN_Process: [0b43a58c] On DHCP Snooping trusted port
DHCPSN_Process: [0b43a58c] Lookup result for CHAddr 00-06-5b-31-14-af: Port 1
DHCPSN_Process: [0b43a58c] DHCP ACK Found...
DHCPSN_DB: Updating entryId 2. Flags 00000010
DHCPSN_DB: Notifying DB listener: CLASSIFR
DHCPSN_ACL: dhcpSnoopAclListener >> dbEntryPt=0x195de05c flags=0x00000080
DHCPSN_ACL: dhcpSnoopAclBindingFindByEntryIndex >> finding binding entryId=2
DHCPSN_ACL: dhcpSnoopAclBindingFindGroup >> found 0 items
DHCPSN_ACL: dhcpSnoopAclBindingFindByEntryIndex >> finding binding entryId=2 items=0
DHCPSN_ACL: dhcpSnoopAclBindingFindFreeByPortNumber >> finding binding portNum=1
DHCPSN_ACL: dhcpSnoopAclBindingFindGroup >> found 0 items
DHCPSN_ACL: dhcpSnoopAclBindingFindFreeByPortNumber >> finding binding portNum=1 items=0
DHCPSN_DB: Change state for 00-06-5b-31-14-af, in NOLEASE_NOLISTEN for event
LISTENER_FAIL
DHCPSN_DB: Changed state for 00-06-5b-31-14-af, to NOLEASE_NOLISTEN
DHCPSN_DB: Couldn't update: Listener error or will exceed MAXLEASES on port 1 (Current/
MAX 0/100)
DHCPSN_Process: [0b43a58c] Error adding entry to DB
DHCPSN_Process: [0b43a58c] Discard packet, DHCP ACK not forwarded