Allied Telesis x900-48 series - Manual (Page 36)

Page 36 | AlliedWare™ OS How To Note: DHCP snooping on AT-9900-style switches
Troubleshooting > Entries with client lease but no listeners
Entries with client lease but no listeners
Entries are not being written to the Current valid leases section of the DHCP snooping
database:
This is caused by partial or incorrect QoS configuration. Check you have classifiers to match
dhcpsnooping addresses. Those classifiers must be attached to policies with forwarding flow
groups or traffic classes. Finally, check that you have a QoS policy applied to untrusted ports.
Manager 8948> show dhcpsnooping database
DHCP Snooping Binding Database
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Database Version ..... 1
Full Leases/Max Leases ... 0/52
Check Interval ........... 60 seconds
Database Listeners ....... CLASSIFR
Current valid entries
MAC Address IP Address Expires(s) VLAN Port ID Source
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None...
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Entries with client lease but no listeners
MAC Address IP Address Expires(s) VLAN Port ID Source
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00-00-00-00-00-04 172.16.1.204 Static 1 4 1 User
00-00-cd-11-b2-4c 172.16.1.123 2432 1 17 2 File
00-06-5b-31-14-af 172.16.1.100 3084 1 1 3 File
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Entries with no client lease and no listeners
MAC Address IP Address Expires(s) VLAN Port ID Source
-----------------------------------------------------------------------------
None...
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